Complex for natural gas supply to consumer

FIELD: transport.

SUBSTANCE: invention relates to supply of natural gas to consumer at its conversion into gas hydrate. Gas conversion means comprises reactor connected with gas and water sources, means to cool the mix of water and gas, means to maintain reactor pressure not lower than equilibrium pressure required for hydrate formation and means to discharge gas hydrate into carrier. The latter should have cargo compartments that can maintain thermodynamic equilibrium to rule out gas hydrate dissociation and means to decompose gas hydrate for gas production. Complex reactor can form gas hydrate pulp and is composed by the tank designed to sustain pressure over 1 MPa and to keep up temperature at the level of 0.2°C. For this, means to cool the mix of gas and water comprises the vacuum ice generator. The latter is composed of heat-insulated tank communicated with sea water source and vacuum outlet of turbocompressor. Note here that ice generator outlet is connected with separator of ice from brine, separator ice outlet being connected with ice mixer and sweet water. Note here that natural gas source is connected with reactor gas inlet and ice generator turbocompressor gas turbine. Reactor second inlet is connected via ice-bearing pulp duct with ice-bearing pulp accumulator composed of heat-insulated tank. Note here reactor hydrate outlet is connected via first pulp duct with hydrate-bearing pulp accumulator. Reactor water outlet is connected with ice mixer and sweet water. Note also that said outlet of ice mixer and sweet water is connected via second ice-bearing pulp duct with ice-bearing pulp accumulator inlet. Besides, gas hydrate discharge means comprise pulp pump and gate arranged at ice-bearing pulp accumulator discharge pipe to be connected with carrier cargo compartment intake pipe. Note also that carrier cargo compartment can be connected with discharge compressor intake pipe, discharge compressor outlet is connected with gas-holder.

EFFECT: lower costs, power savings.

7 cl, 5 dwg

 

The invention relates to gas industry and can be used to obtain, store, and beltruboprovodstroy the transport of natural gas.

A known system for delivery of natural gas to the consumer, providing the liquefaction of natural gas through a turbo-expander and means of transportation of liquid gas (Vasiliev, Y. "Motor fuel of the future". "Gas industry", 1995, No. 1).

The disadvantage is the difficulty of manufacturing the turboexpanders for large expenses, working in the field of cryogenic temperatures, the need to use special cryogenic structural materials for the manufacture of the expander and therefore large capital costs, the need for deep cleaning gas from the high-boiling than methane components, which would otherwise freeze and remove the expander from the system, the impossibility of continuous operation oddodefender system, while redundancy leads to higher costs, the complexity of the operation control expander under varying pressures, flow rates and temperatures through GDS natural gas. In addition, containers for storage and transportation of liquid gas is structurally complex, and the required energy consumption for maintaining the liquid state of the material to be conveyed is.

A known system for delivery of natural gas to consumers, including the means of its conversion into the hydrate, the means of shipment the latest in insulated cargo space of the vehicle, and dissociation of gas hydrate heat supply from the outside sea water with a temperature of +20°C (see J.S.Gudmundsson and A.Boslashrrehaug. Frozen Hydrate for transport of Natural Gas. AE&NUST. 1996).

In transportation of gas hydrate on Board the ship is carried out in bulk, in the form of solid fragments of different forms, at atmospheric pressure and a temperature of minus 20°C, which dramatically reduces the intensity of the heat supply to the hydrate (at the stage of its decomposition) because its freezing in large agglomerates. In addition, sea water with a temperature of about 0°C is dropped overboard and is not used as a coolant when you receive a new hydrate

Known also complex for delivery of natural gas to the consumer, including the means of its conversion into a hydrate containing a reactor provided with a source of gas and water, a coolant mixture of water and gas and the means to maintain pressure in the reactor is not below the equilibrium necessary for hydrate formation, the means of shipment of gas hydrate in a vehicle equipped with a cargo areas are designed to maintain thermodynamics the CSOs equilibrium, excluding the dissociation of gas hydrate, and the means of decomposition of gas hydrate with getting gas (see EN No. 2200727, CL. SS 5/02, 1997).

The disadvantages of the complex include high energy costs, because at the stage of obtaining hydrate requires repeated kompremirovannyj and subsequent cooling of the gas and use this energy to create the conditions for hydrate formation and preservation of hydrates, high energy costs and the stage of decomposition of gas hydrate with getting gas.

Task to be solved by the claimed invention is directed, is expressed in the reduction of energy consumption for gas delivery to the consumer.

The technical result expected from the use of this invention is the reduction of energy, capital and operating costs for obtaining the gas hydrate and its reverse dissociation after delivery to the consumer. Furthermore, the reduced consumption of the equipment necessary for the delivery of natural gas.

This technical result is achieved by the fact that complex for delivery of natural gas to the consumer, including the means of its conversion into a hydrate containing a reactor provided with a source of gas and water, a coolant mixture of water and gas and the means to maintain pressure in the reactor is not below the equilibrium necessary for hydrate formation, redtwo shipment of gas hydrate in the vehicle, fitted with cargo spaces, which are designed to maintain thermodynamic equilibrium, eliminating the dissociation of gas hydrate, and the means of decomposition of gas hydrate with getting gas, characterized in that the reactor is made with the possibility of forming a gas hydrate slurry in the form of a tank, designed for pressure over 1 MPa, insulated from the possibility of maintaining the temperature of 0.2°C, while the reactor is configured to heat the hydrate fine Toledano pulp, for which a coolant mixture of water and gas that contains a vacuum ice machine, made in the form of insulated tank communicated with a source of sea water and the vacuum outlet of the turbocharger, while the output of the ice machine is in communication with the separator of the ice from the brine, ice, the output of which is communicated with a stirrer, ice and fresh water, and a source of natural gas in communication with the gas inlet of the reactor and gas turbine turbocharger ice machine, and the second reactor inlet via a slurry pipeline losteria pulp communicated with the output of the drive losteria pulp, made in the form of a thermally insulated tank, with hydrated output of the first reactor slurry pipeline hydrocodoneee pulp communicated with the drive hydrocodoneee pool is dust, as water reactor outlet communicated with mixer ice and fresh water, with the output of the mixer ice and fresh water through the second pipeline losteria pulp communicated with the entrance drive losteria pulp, in addition, means of shipment hydrate include pulp pump and the valve installed on the discharge pipe drive hydrocodoneee pulp made with the possibility detachable connection with the receiving socket of the cargo space of a vehicle, provided with a valve, with the cargo space of the vehicle is made with the possibility of permanent connection with receiving the discharge pipe of the compressor, the output of which is communicated with the gas tank. In addition, to obtain ice used ice machine, ensuring the achievement of the values of the refrigeration coefficient of not less than 12 at the boiling temperature of -3°C and condensation of +6°C. in Addition, the turbocharger is made with the possibility of setting up a tank of ice discharge equal to the pressure of the triple point of water. In addition, the turbine of the turbocharger ice machine is made use of energy gases, products of combustion of natural gas. In addition, the first and second slurry pipelines losteria pulp respectively provided with first and second pulp is ASOSAI. In addition, the brine outlet of the separator of the ice from the brine through the brine pump is communicated with the cavity of the hollow container of the ice machine. In addition, the drive hydrocodoneee pulp is arranged to maintain the temperature and pressure at a level that prevents dissociation hydrocodoneee pulp, and with the possibility of shipment.

Comparison of the characteristics of the claimed solution with signs analogues and prototype demonstrates its compliance with the criterion of "novelty".

The characteristics of the characterizing portion of the claims, solves the following functional tasks.

Signs... "reactor made with the possibility of forming a gas hydrate slurry to provide translation of natural gas in hydrate form, the parameters of which can be used to move technology similar to that used to move liquids. In addition, there is the possibility of effective heat dissipation (at the stage of formation of hydrate particles) or removal from cold particles hydrate (on the stage of decomposition of gas hydrate), which provides up-to-date effective formation of gas hydrate, or its decomposition.

Signs of the reactor is made... in the form of a tank, designed for pressure over 1 MPa, insulated from the possibility of maintaining the temperature of 0.2°C can reduce the burden of the project for the design parameters of the reactor, to simplify manufacture and reduce the cost of energy for the generation of gas hydrate.

Signs of the reactor is configured to heat the hydrate fine Toledano pulp" provide a high efficiency heat sink heat released during the formation of gas hydrate thermal energy released during the formation of hydrate particles, effectively absorbed by the melting water ice particles (heat of hydrate formation in natural gas 410 kJ/kg and the heat of melting of water ice is 335 kJ/kg). 1 kg Toledano pulp (30%concentration of particles of water ice) in 5 times more effective in blademaster any single-phase coolants and including water. The particles of water ice serve as centers of nucleation of a new phase in gas hydrate (see Olga Zatsepina. HYDRATE FORMATION IN ENVIROMENT. University of British Colambia. 1997), providing heterogeneous growth mechanism of hydrate particles, as they are adsorbed by the bubbles of natural gas (PAMM V.M. Adsorption of gases. M.: Chemistry, 1976 - 549 C.), which is a component of the hydrate.

Signs indicating that the coolant mixture of water and gas that contains a vacuum ice machine, made in the form of insulated tank communicated with a source of sea water and the vacuum outlet of the turbocharger", provide for effective deposition is of ice as the main component Toledano pulp.

Signs indicating that the output of the ice machine is in communication with the separator of the ice from the brine, ice, the output of which is communicated with a stirrer, ice and fresh water supply fresh ice mixing with fresh water to remove brine - mineralized water.

Signs indicating that the source of natural gas in communication with the gas inlet of the reactor and gas turbine turbocharger maker", supply of natural gas in the reactor (to turn it into a hydrate) in the gas turbine of the turbocharger ice machine (for use as an energy source).

Signs indicating that "the second reactor inlet via a slurry pipeline losteria pulp communicated with the output of the drive losteria pulp", provide the input means of cooling (lastarria pulp) from a source in a reactor loaded with a mixture of water and natural gas.

Signs indicating that the drive losteria pulp is made in the form of a thermally insulated reservoir, ensure the preservation losteria pulp (exclude its loss from melting).

Signs indicating that "hydrated output of the first reactor slurry pipeline hydrocodoneee pulp communicated with the drive hydrocodoneee pulp", provide output ready gertsogenauh material and is the accumulation and storage before transfer to the consumer.

Signs indicating that "water reactor outlet communicated with mixer ice and fresh water, provide a supply of fresh water (formed by melting losteria pulp in the selection process of its heat from a mixture of water and gas during hydrate formation)necessary to generate losteria pulp, when it is mixed with ice, and grinding the mixture.

Signs indicating that the output of the mixer ice and fresh water through the second pipeline losteria pulp communicated with the entrance drive losteria pulp", provide a restocking losteria pulp as its expenditure from the drive losteria pulp.

Signs indicating that "the shipment of gas hydrate include pulp pump and the valve installed on the discharge pipe drive hydrocodoneee pulp", provide overload hydrocodoneee pulp from the drive in the vehicle and respectively overlap the channel opening of its filing.

Signs indicating that the discharge port of the drive hydrocodoneee pulp is made with possibility of permanent connection with the receiving socket of the cargo space of the vehicle will cause the loading of the vehicle and the possibility of subsequent transfer of loading zones in other premises transport is private funds.

Signs indicating that "the receiving socket of the cargo space of the vehicle is equipped with latch", provide isolation of the cargo space of the vehicle after loading hydrocodoneee pulp.

Signs indicating that "the cargo space of the vehicle is made with the possibility of permanent connection with the receiving pipe the discharge of the compressor, allow the unloading of gas dissociation (decomposition) of gas hydrate slurry and compression of this gas to minimize storage capacity. Upon completion of the unloading process, the vehicle may go for the next batch of gas hydrate.

Signs indicating that the output of the compressor is communicated with the gas tank", provide the ability to store compressed gas.

Signs of the second and third claims provide process efficiency loginusername as a process of determining the effectiveness of the claimed method.

The signs of the fourth claim simplify matters to ensure energy of the process of ice formation.

The signs of the fifth claim of the invention provide movement losteria pulp in cases of inability to use her "gravity" submission.

The signs of the sixth paragraph of the form of the s invention provide movement of brine from the separator ice from brine) in cases of inability to use his "gravity" submission.

Signs of the seventh claim provide safety hydrocodoneee pulp during storage in the drive and the possibility of its shipment in the vehicle.

The invention is illustrated by drawings, where figure 1 shows a fragment of the technological scheme of complex equipment involved in the production stages of gas hydrate slurry and its shipping in the vehicle; figure 2 shows a fragment of the technological scheme of complex equipment involved at the stage of discharging gas hydrate slurry from the vehicle; figure 3 shows a diagram of the formation of hydrate; figure 4 shows the diagram of state of the gas hydrate of natural gas in the coordinates of the P-T; figure 5 is given transport-technological scheme of the movement of gas hydrate and lastarria pulp.

In the drawings shown:

site of formation of gas hydrate, comprising: a reactor 1, gas 2 and the second 3 inputs, a source of natural gas 4, the drive losteria pulp 5, 6 and hydrated water 7 outputs reactor, the storage node hydrate 8, the first 9 and second 10 pulp pump, brine pump 11, turbocompressor 12, the ice generator 13, the separator of the ice from the brine 14, the mixer ice and recirculation of water 15, the source of feed water 16, the pipeline 17, the first 18 and second 19 pipeline losteria pulp, polypodium the d 20 gas hydrate slurry and the slurry pipeline 21 losteria brine slurry, pipes 22-25, respectively, for pumping recirculation of water for pumping brine pumping feed water and feed ice. Isolation and relief valves, instrumentation and other assistive devices necessary for the operation of the site of formation of gas hydrate, ensuring implementation of the inventive method, not shown;

- the tank 26 of the vehicle, its insulation 27; pump 28, the shutoff valve 29 and pipe 30, the shutoff valve 31 of the pipeline 32;

tools of the discharge gas that includes a compressor 33, the gas tank 34.

As reactor 1 use insulated tank that can withstand pressures greater than 10 bar, equipped with appropriate shut-off valves and instrumentation equipment.

In addition, in the drawings shown hydrate plant 35, the direction 36 transportation of gas hydrate slurry, direction 37 transportation losteria pulp, regasification plant 38.

The source of natural gas 4 (e.g., pipeline) reported gas pipelines 17 with a gas inlet 2 of the reactor 1 and the gas turbine (not shown), supporting the turbocharger 12.

The second input 3 of the reactor 1 reported the first slurry pipeline 18 (through the first pulp pump 9) output source losteria pulp 5.

The guy who Ratna output 6 of the reactor 1 reported by slurry pipeline 20 with the storage node hydrate 8.

The water outlet 7 of the reactor 1 indicated by the line 22 with mixer ice and recirculation of water 15, the output of which the second slurry pipeline 19 (through the second pulp pump 10) is communicated with the entrance drive losteria pulp 5.

As the drive losteria pulp 5 used insulated tank.

As the storage node hydrate 8 used insulated tank (or tanks)are designed to maintain thermodynamic equilibrium stored them in gas hydrate slurry at a pressure of 1 MPa) and is equipped with a means of shipping the material to the consumer.

As the ice generator 13 are applied vacuum ice machine, preferably of the brand IDE Tech, driven by turbocompressor 12. Structurally it is a hollow tank filled with seawater, coupled with turbocharger 12 (vacuum outlet which opens into the cavity of the tank)that allows you to create a reservoir of vacuum equal to the pressure of the triple point of water.

In this vacuum the ice machine refrigeration coefficient equal to 12 at the boiling temperature of -3°C and condensing +6°C, while the ammonia refrigerating unit when the condensing temperature +6 has a cooling rate of no more than 5, because it must have a boiling temperature -0°C (for the reason, in the evaporator, it is impossible to provide direct contact boiling ammonia and crystallizing sea water). An additional advantage of the vacuum of the ice machine before traditional is the use of a turbocharger, which uses as an energy carrier natural gas that allows for the production of gas hydrate slurries significantly reduce energy consumption.

The entrance of the ice generator 13 is communicated with the pipe 24 with a source of feed water 16, which is used as the intake seawater of known construction.

As the separator of the ice from the brine 14 use a known device for a similar purpose, the performance of which corresponds to the performance of the installation.

The tank 26 of the vehicle is made in the form of a thermally insulated tank having a minimum burst pressure of more than 10 bar (1 MPa) and is rail, road tanker or tank sea or river tanker. Its insulation 27 is made as a layer of polyurethane foam with a thickness of about 100 mm Pump 28 is installed on the pipe 30 and is separated from the cavity of the tank 26 shut-off valve 29. In addition, the tank 26 is equipped with a safety valve, made in a known manner (not shown), with the possibility of accidental discharge of gas or gas hydrate slurry.

To ensure shipment of guy who rutagarama slurry from the storage node hydrate 8 in the tank 26 of the vehicle, use flexible insulated tubing, made in a known manner with the possibility of permanent connection of the storage node hydrate tank 8 and 26 (not shown).

To ensure the unloading of the tank 26 (exhaust gas from it) use a similar flexible insulated pipeline is executed in a known manner with the possibility of permanent connection of the pipeline 32 of the tank 26 and the compressor 33 (not labeled).

The compressor 33 and the gas tank 34 is connected by a pipeline is executed in a known manner, while the gas tank is made known and calculated at the appropriate pressure.

Products division losteria brine slurry on fresh ice and brine are used as follows - ice gravity through the conduit 25 is discharged into the mixer ice and recirculation of water 15 and the brine, the salt concentration is much higher than in the original sea water or thrown into the sea, or, as shown in the drawing, line 23 return to the ice generator 13.

Hydrate formation takes place on the lines of hydrate formation (figure 3), which is separated from the equilibrium hydrate-gas-water areas of the metastable state (a-b, d-e, f-h).

In the generator gas hydrate slurry (figure 1) of the liquid natural gas (GHGs: methane - 90%, ethane - 5%, propane - 3%) in water forms a hydrate of natural gas (HPG). Points a, g, W (Fig) correspond to the equilibrium state of the system "hydrate-gas-water", moreover, this state cannot enter into the process of hydrate formation (a-b, d-e, f-h) as long as the system will not be subject to a certain value "driving force" of hydrate formation (Gibbs Potential G, the chemical potential Δµ, supercooling Δt, the saturation σ=Δµ/RT). All special cases of the manifestation of the driving force of nucleation and growth of a new phase combines the Gibbs potential, negative values which can be passed through all of phase transitions). It is known that under all other equal conditions, the process of hydrate formation starts earlier and faster in the presence of water in various mechanical inclusions, bubbles of gas or molecular complexes-associates who are always centers of formation of a new phase, in this case, hydrate (heterogeneous nucleation). The beginning of the process of hydrate formation coincides with the achievement of figurative points system gas-water spinodal (figure 3). Remove from the equilibrium in the stable state of the hydrate illustrates the increase of the "driving force" of hydrate formation. In this case, the "driving force" hydrate formation presents hypothermia system gas-water (temperature gradient of supercooling ΔtPERIOCL=tand-tb; tg-td; tW-tC) towards equilibrium (point a, g, W figure 3), So obviously, the decrease system temperature gas-water to the same value (for example to 0.2) gradient, expressed in hypothermia, at different pressures will be different. This allows to reduce in the gas hydrate generator pressure and accordingly the power consumption, having a high potential gradient hydrate, obtained by the interfacial heat transfer, dramatically reducing the temperature gradient between growing particles hydrate and brine and accordingly increases the gradient of supercooling ΔtPERIOCL.

In addition to creating a gradient, ensuring the passage of the process of hydrate formation in the system of gas-water, it is necessary to provide the abstraction of heat of condensation, which for methane hydrate is equal to 410 kJ/kg.

In the process of hydrate formation simultaneously with the formation of hydrate particles passing their dissociation due to local temperature fluctuations, which is always accompanied by an exothermic phase transitions. They arise because of the impossibility of efficient discharge of heat from each emerging and growing particles of a new phase in relation to their distance from the heat transfer surface. Statistical and molecular physics injected as a parameter of intensity of growth or destruction of any phase indicator of intensity exceeding one process to the other or their equality when equality arising and disappearing particles of the new phase per unit of time (dynamic equilibrium). It is obvious that for infinitely large intensity of the withdrawal of heat from each emerging and growing particles hydrate the value of temperature fluctuations and, accordingly, the amount of dissociation of the individual particles of hydrate per unit of time will tend to zero, while the energy efficiency of the process of hydrate formation will tend to its theoretical maximum.

In the used gas hydrate generator the heat generated by hydrate particles extracted from them are comparable in size and located in close proximity to them (including contact) particles losteria pulp. The intensity of the secured thus the interfacial heat transfer (heat transfer coefficient α, W/m2*To) between the surface of the growing particles hydrate and melting of water ice particles with a size 3...5 µm reaches 3000...5000 W/m2*To that effect comparable with the immersion of the particles of hydrate in boiling Freon-22.

The reason for such a significant effect size of the crystals losteria pulp on the rate of melting and, ultimately, on the intensity of heat removal from the growing particles hydrate is that in thermally thin bodies, when the distance from thermal centre to the surface (R) of the order of 5 to 10 μm, the rate of temperature change inside the object is not dependent on thermal conductivity, and is defined by its size.

When the value of the dimensionless time Fo=4 (for the number Bi=0,1) the actual time of the process of fusion of crystal water ice size of 100 μm is 0.2 seconds, and a size of 5 μm - 4*10-4seconds

Thus, at the inception and growth of hydrate particles surrounded by particles of water ice, the value of the local temperature fluctuations will be reduced to its theoretical minimum and practically be zero.

The particles of water ice at the same time serve as centers of nucleation of a new phase of gas hydrate, providing heterogeneous growth mechanism of hydrate particles, as they are adsorbed by the bubbles of natural gas, which is a component of the hydrate. At the inception of the hydrate particles begin to distinguish thermal energy, which is immediately absorbed by the melting water ice particles present in the place of origin of the hydrate. The uniform distribution of particles of water ice and hydrate achieved continuous supply to the reactor Toledano pulp and exhaust recirculation of water (figure 1).

In the prototype used the principle of heat transfer by direct contact of the formed particles of hydrate phase coolant (circulating water), which is to perform the function of the coolant is cooled. It has the disadvantage of low specific blademaster single-phase coolants, and including water (heat capacity of water is equal 4,19 kJ/kg*K, when the temperature drop in the heat exchange apparatus 5°C makes it possible to extract from the object of cooling one kilogram of coolant 21 kJ of heat is Q=cmΔt=4,19*1*5=21 kJ, while the melting losteria pulp at 30%concentration of particles of water ice makes it possible to extract one kilogram of pulp from the cooling object 110 kJ of heat is Q=0.3*r*m=0,3*335*1=110 kJ).

The heat of hydrate formation in natural gas 410 kJ/kg and the heat of melting of water ice is 335 kJ/kg

Low temperature gradient between the formed hydrate and melting of water ice is a major factor in the efficiency of the process of formation of gas hydrate. When applying heat exchange apparatus of the contact type of the most modern constructions temperature difference between the environments is 9°C (using ammonia), 12°C for freons, while the effect of interfacial heat transfer through use as a brine slurries reduces the temperature difference (distance b-b; d-e; C and, 2) to -0,2°C. In this case, the points a, g, W (3) will move on isotherm -0,2°C, and the distance a-b; g-d; g-C (temperature gradient ΔtPERIOCLas the "driving force" of hydrate formation) will increase to its maximum possible value. Obviously, the reduction of the temperature gradient formed between particles hydrate and brine increases the gradient of hydrate formation (subcooling system gas-water ∆ T PERIOCLrelative to the equilibrium temperature t1, t4, t7, figure 3). Increasing the "driving force" hydrate formation reduces the delay time of the birth of hydrate particles and therefore increases the efficiency of the process of generating gas hydrate slurry.

An additional factor that increases the efficiency of the process of hydrate formation, is infinitely large heat transfer area between the infinitely large number of thermally thin solids (particles hydrate and water ice), which is the reason for maintaining high values of heat flow between growing particles hydrate and consumable particles of water ice in the temperature gradient between them is practically zero.

When generating ice sea water begins to harden at a temperature of -2°C and a pressure of 420 PA (boiling point - hardening is reduced to -3°C during the freezing of water is 30% of the solid phase, and up to -5°C during the freezing 50% of the solid phase), and the ice is a chemically pure water in the solid aggregate state. Received in the cavity of the vacuum ice machine ice water forms a liquid solution phase losteria brine slurry, which is passed to the separator of the ice from the brine. After separation losteria brine slurry on fresh ice and brine ice by gravity pod is t in a mixer with ice and water recirculation 15, a brine or thrown into the sea or return to the ice generator 13.

Losteria slurry comprising dispersed ice (up to 50% of the volume of pulp and water is accumulated in the accumulator 5, whence it is pumped into the generator gas hydrate slurry. In the generator gas hydrate slurry particles of water ice melt in the process of removal of heat from the formed particles hydrate and recirculation of water are removed by the pump to the mixer ice and recirculation of water 15.

Ready gas hydrate slurry is accumulated in the storage node hydrate 8, whence it is shipped in tank 26 of the vehicle by a pump 28 mounted on the socket 30 of the tank (when open shut-off valve 29). In accordance with the applicable rules and regulations of the loading of the tank 26 does not exceed 80% of its volume. The pressure in the tank 26 up to 1 MPa, for example, by the injection of natural gas at the proper pressure. After this operation and disable the tank 26 from the storage node hydrate 8, including the overlap of the shut-off valve 29 and pipe 30, the tank 26 is prepared for transportation. At a pressure of 1 MPa and a temperature of the order of +2...+3°C (point 1, figure 4), provide the "work" of insulation 27, the gas hydrate slurry retains sufficient for practical application stability.

Upon arrival of the vehicle at regasify the operating plant 38 pipeline 32 of the tank 26 is connected through the compressor 33 to the tank 34. Next, open the shutoff valve 31, and through the compressor 33 start pumping gas cushion from the tank 26 to the transfer of gas in the tank 34. As a consequence, the pressure in the tank 26 is reduced to atmospheric (process 1-2), resulting in the hydrate particles included in the slurry begins to dissociate into water and free gas (point 3).

In order for the dissociation of the hydrate was held continuously, it is necessary to its particles continuously to draw thermal energy from any source, in this case, the pulp contains two source of thermal energy (heat contained in the particles of the hydrate and liquid phases of the slurry).

The heat contained in the hydrate particles, numerically equal to the product of the temperature exceeding the hydrate over temperature thermodynamic equilibrium (-70°C) enthalpy of hydrate (2.7 kJ/kg*K) (see Makogon Û.F., Hydrates of natural gases, M., 1974).

Q=CpmΔt=2,7*1*75=200 kJ/kg

Thus, reducing the pressure in the gas hydrate slurry to atmospheric triggers dissociation of the hydrate by the heat contained within the hydrate (200 kJ/kg). An endothermic process dissociation, in turn, leads to a decrease of the temperature of the hydrate particles, which will continue up until the temperature of the hydrate particles will not reach the equilibrium rate is atory (point 4, figure 4). However, for the development of such a scenario requires that the hydrate particles were somehow isolated from the surrounding water. Because the hydrate particles are part of a fine system of water-hydrate, i.e. pulp, by reducing the temperature of the hydrate is lower than the temperature of the liquid phase of the pulp, will begin the transfer of heat, which would create heat flux from the fluid to the particles of hydrate. After the hydrate temperature 0°C (point 3, figure 4), or rather-0.2, will begin the solidification of the liquid phase of the slurry (i.e. water) with the release of thermal energy in the amount of 335 kJ/kg. it is Obvious that after the dissociation of gas hydrate slurry buds another pulp - lastarria, the number of particles of water ice in lastarria the pulp will be more than particles of hydrate in the gas hydrate slurry, 18% (410-335/410=0,18), namely 50%, because the particles of hydrate consume more heat energy in the dissociation, (410 kJ/kg)than liquid water allocates solidification (335 kJ/kg). This free natural gas released from hydrate when dissociation is removed the compressor from the tank into the storage tanks.

Losteria pulp remaining in the tank 26 after removal of the released natural gas, is sent to the place of production of the gas hydrate slurry to minimize the power consumption generated by the e ice (for production losteria pulp).

Thus, the dissociation of hydrate of natural gas regasification plant possible without the supply of heat energy to the gas hydrate slurry from the outside. Moreover, the obtained losteria pulp is returned for production of gas hydrate, where the particles of water ice melting will take the heat of condensation from the newly derived gas hydrate slurry in the amount of 168 kJ/kg (0.5*335 kJ/kg), which makes up 40% of the amount of heat that must be removed during the formation of hydrate (168/410=0,41).

When returning losteria the gas hydrate slurry plant in cylindrical tanks, insulated with a layer of polyurethane foam with a thickness of 100 mm (coefficient of heat transfer K=0.25 W/m2K), loss of ice per day will be

Q=K*F* ∆ T*τ=0,25*1200*20*24*3600=520000000 j,

m=Q/r=520000000/335000=1550 kg/day.

what is 0.15% per day from the transported ice. The claimed device delivers natural gas to the consumer accounts for transport in tanks under pressure of 10 kg/cm2that is more secure in comparison with currently applied solutions.

1. Complex for delivery of natural gas to the consumer, including the means of its conversion into a hydrate containing a reactor provided with a source of gas and water, a coolant mixture of water and gas and the means to maintain pressure in the reactor is e below the equilibrium, required for hydrate formation, the means of shipment of gas hydrate in a vehicle equipped with a cargo areas are designed to maintain thermodynamic equilibrium, eliminating the dissociation of gas hydrate, and the means of decomposition of gas hydrate with getting gas, characterized in that the reactor is made with the possibility of forming a gas hydrate slurry in the form of a tank, designed for pressure over 1 MPa, insulated from the possibility of maintaining the temperature of 0.2°C, while the reactor is configured to heat the hydrate fine Toledano pulp, for which a coolant mixture of water and gas that contains a vacuum ice machine, made in the form of insulated tank communicated with source of sea water and the vacuum outlet of the turbocharger, while the output of the ice machine is in communication with the separator of the ice from the brine, ice, the output of which is communicated with a stirrer, ice and fresh water, and a source of natural gas in communication with the gas inlet of the reactor and gas turbine turbocharger ice machine, and the second reactor inlet via a slurry pipeline losteria pulp communicated with the output of the drive losteria pulp, made in the form of a thermally insulated tank, with hydrated output react the RA first slurry pipeline hydrocodoneee pulp communicated with the drive hydrocodoneee pulp, as water reactor outlet communicated with mixer ice and fresh water, with the output of the mixer ice and fresh water through the second pipeline losteria pulp communicated with the entrance drive losteria pulp, in addition, means of shipment hydrate include pulp pump and the valve installed on the discharge pipe drive hydrocodoneee pulp made with the possibility detachable connection with the receiving socket of the cargo space of a vehicle, provided with a valve, with the cargo space of the vehicle is made with the possibility of permanent connection with receiving the discharge pipe of the compressor, the output of which is communicated with the gas tank.

2. The complex according to claim 1, characterized in that for obtaining ice used ice machine, ensuring the achievement of the values of the refrigeration coefficient of not less than 12 at the boiling temperature of -3°C and condensation of +6°C.

3. The complex according to claim 1, characterized in that the turbocharger is made with the possibility of setting up a tank of ice discharge equal to the pressure of the triple point of water.

4. The complex according to claim 1, characterized in that the turbine of the turbocharger ice machine is made use of energy gases, products of combustion of natural gas.

5. The complex according to claim 1, the tives such as those the first and second pipeline losteria pulp respectively provided with first and second pulp pumps.

6. The complex according to claim 1, characterized in that the brine outlet of the separator of the ice from the brine through the brine pump is communicated with the cavity of the hollow container of the ice machine.

7. The complex according to claim 1, characterized in that the drive hydrocodoneee pulp is arranged to maintain the temperature and pressure at a level that prevents dissociation hydrocodoneee pulp, and with the possibility of its shipment.



 

Same patents:

FIELD: machine building.

SUBSTANCE: method involves measurement, sampling of hydrocarbon gas-liquid mixture supplied from wells for analysis and supply to mixture flow in the beginning of the pipeline of composition of surface active substances, which converts multiphase multicomponent flow to pseudohomogeneous bubble system, and consisting of oil-soluble demulsifier and depressant or inhibitor of paraffin depositions taken in the weight ration of 1:7 to 7:1. The above composition is introduced in the amount of 0.01 to 0.02 or 0.2 to 0.5 wt % of hydrocarbon constituent of mixture liquid phase.

EFFECT: improving mixture transport efficiency.

7 tbl

FIELD: oil and gas industry.

SUBSTANCE: according to the 1st version the system includes fresh water source with fresh water pipeline, productive wells connected via product pipeline to oil preparation station equipped with marketable oil pipeline and pipeline of concurrently extracted water, connected to the waste treatment facilities that are connected to injection wells via fresh water pipeline, cluster pump station and water conduit fitted with corrosion inhibitor dosing unit. Well product pipeline is equipped with de-emulsifying agent dosing unit, waste treatment facilities are fitted with trapped oil pipeline for its return to oil preparation station, additionally equipped with product heating system with fuel gas pipeline and associated petroleum gas pipeline, and second purified water pipeline connected to water preparation unit for supply of concurrently extracted water to fine purification at oil extraction volume more than 10% from design maximum volume of oil extraction with purified water pipeline disconnection. Note that water preparation unit is connected to fresh water pipeline for its fine treatment for provision of steam generator by necessary water volume, as well as to cluster pumping station via brine pipeline and finely treated water pipeline with steam generator that is for water heating is connected to fuel gas pipeline and via steam pipe it is connected to the steam-injection wells. According to the 2nd version productive wells are connected via well product pipeline and booster pump station to oil preparation unit.

EFFECT: increase of arrangement system operation reliability by means of: pumping of steam generated from concurrently extracted water into the bed, partial destruction of emulsion in oil collection system by means of early supply of de-emulsifying agent into well product; generation of water steam from concurrently extracted water through its fine treatment from hazardous impurities.

6 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: method for obtaining gas hydrates is implemented at the temperature of +0.2°C and pressure of 1 MPa. In order to cool down gas with water there used is ice-water pulp, preferably with particle size of not more than 10 mcm, which are uniformly distributed along the reactor volume; ice content is about 50% of its volume.

EFFECT: use of this invention allows reducing power, capital and current costs for production of gas hydrate, and reducing material consumption of equipment required for implementation of the method.

3 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: reactor is a reservoir designed for pressure of more than 1 MPa, heat-insulated to maintain temperature at 0.2°C, equipped with a facility of material mixing. At the same time a medium for cooling the mixture of water and gas is a finely dispersed water and ice pulp, for this purpose the device comprises a vacuum ice generator made in the form of a heat-insulated reservoir communicated with a source of sea water and a vacuum outlet of a turbocompressor, preferably made as capable of developing underpressure in the reservoir, which is equal in value to the pressure of the triple point of sea water. Besides, the outlet of the ice generator is communicated with a separator of ice from brine, the ice outlet of which is communicated with the mixer of ice and fresh water. In its turn the source of natural gas is communicated with the gas inlet of the reactor and the gas turbine of the turbocompressor made as capable of using energy of gases, natural gas combustion products, and the second inlet of the reactor, by means of a pulp line of the ice-containing pulp equipped with the first pulp pump is communicated with an accumulator of the ice-containing pulp made in the form of the heat-insulated reservoir. At the same time the hydrate outlet of the reactor is communicated by the pulp line of the hydrate-containing pulp with the accumulator of the hydrate-containing pulp made in the form of the heat-insulated reservoir, as capable of maintaining pressure not below the equilibrium one, excluding dissociation of the hydrate-containing material, with the possibility to discharge hydrate-containing pulp from it, besides, the water outlet of the reactor is communicated with the mixer of ice and fresh water, at the same time the outlet of the ice and fresh water mixer by means of the pulp line of ice-containing pulp equipped with the second pulp pump is communicated with the accumulator of ice-containing pulp.

EFFECT: reduced power inputs for production of hydrates and reduction of weight and dimension characteristics of a set of equipment required to produce hydrates.

4 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: method includes production of gas hydrates, their transportation to a consumer, decomposition of a gas hydrate with production of gas, and is characterised by the fact that the gas hydrate is produced in the form of a water-hydrate pulp with content of gas hydrate particles of around 50% of its volume. At the same time the process to produce gas hydrates is carried out under thermodynamic parameters that correspond to formation of gas hydrate, with heat removal from a mixture of natural gas and water by a water and ice pulp, preferably, with particle size of not more than 10 mcm, with content of ice particles of around 50% of the water and ice pump volume, which are evenly distributed in the reactor volume, transportation of the gas and hydrate pulp is carried out in tight, heat-insulated cargo premises of a vehicle, under thermodynamic parameters that exclude decomposition of the gas hydrate, besides, decomposition of the gas and hydrate pulp with gas removal. Upon completion of its transportation, the pressure in the cargo premise of the vehicle is reduced down to the atmospheric one. At the same time the water and ice pulp produced in process of decomposition of the gas and hydrate pulp is returned, with preservation of its temperature, to the place of production of gas hydrates, where it is used repeatedly in production of the water and ice pulp suitable for production of the gas hydrate.

EFFECT: usage of this invention will make it possible to reduce power, capital and current costs for production of a gas hydrate, and to reduce material intensity of equipment necessary for implementation of the method.

2 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: invention refers to a method for reduction of adhesion of gas hydrates to inner surface of a path and associated equipment, which transport or process fluid flow at explorations and production of oil and gas, in oil refining and/or petrochemistry, resulting in provision of inner surface of the path with a layer of the coating, which is characterised by static contact angle of wetting for the resting water drop on the coating layer, in the air, which is more than 75°, under ambient conditions according to the measurement in compliance with ASTM D7334-08, where the above coating layer includes diamond-like carbon (DLC) containing fractions of one or more components chosen from the group consisting of silicon (Si), oxygen (O) and fluorine (F).

EFFECT: preventing hydrate blocking of a natural gas transporting pipeline without any need for deterioration of tightness of the pipeline structure.

15 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates for treatment of gas and gas condensate for pipeline transportation. Proposed method comprises catalytic treatment of hydrocarbon gas at higher temperature. It differs from known processes in that catalytic treatment is used for the mix of stabilisation gas and wide fractions of light hydrocarbons produced by separation of the mix of catalytic treatment product with gas condensate deposit borehole products to separation gas and condensate followed by dehydration, demineralisation and stabilisation to produce stable gas condensate and stabilisation gas. Note here that separation gas is subjected to drying and gas-gasoline processing to obtain dry stripped gas and wide fraction of light hydrocarbons.

EFFECT: higher yield of prepared gas and stable gas condensate, no wastes or semis.

1 cl, 1 ex

FIELD: machine building.

SUBSTANCE: method consists in formation on surfaces of a structured film by creating emulsion of surface active substances (SAS), dosing the emulsion to fluid medium; at that, as SAS, biologically and thermally non-decomposed compounds are used, which are chemically inert in relation to fluid media, for example film-forming amines; the above medium is heated to the temperature that is higher than fusion temperature of used SAS; products are cleaned from corrosion products and deposits; the product is placed into fluid medium; electromagnetic field is created by introducing to fluid medium of an electrode; the electrode is connected to one pole of a current source, and the product from metal or alloy is connected to the other one; temperature and electromagnetic field is exposed till the end of formation process of molecular coating.

EFFECT: improving reliability, corrosion resistance and service life of products from metals and alloys.

FIELD: machine building.

SUBSTANCE: method consists in formation of a structured film by means of emulsion of molecules of surface active substances (SAS); at that, as SAS, biologically and thermally non-decomposed compounds are used, which are chemically inert in relation to fluid media, for example, film-forming amines. The product is cleaned from corrosion products and deposits, placed into a tight chamber, exposed in oxygen-containing medium, heated to the temperature of 80°C to 400°C and exposed till the end of formation process of protective metal organic coating; SAS emulsion is evaporated, movement of medium flow containing SAS molecules in the chamber is provided, thus ensuring adsorption process of SAS molecule on surfaces of products.

EFFECT: improving reliability, corrosion resistance and service life of products from metals and alloys.

4 cl

FIELD: machine building.

SUBSTANCE: proposed method comprises introducing additive into pipe at several spaced apart points, said spacing not exceeding the length of additive efficient effect.

EFFECT: higher efficiency of anti-turbulence additive.

4 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: device contains trunk pipeline, means for delivery of pre-treated gas under pressure and means for additional influence on stream of transported gas which are distributed at pipeline sections. Gas hydrate and water pulp with content of gas hydrate in transported gas up to 50% of its volume is used as pre-treated gas; at that particle of gas hydrate are equal to 3-5 mm. Pipeline has functions to support thermodynamic modes excluding decomposition of gas hydrate. Along the pipeline length there are distributed heating units containing inductors capable to heat pipeline perimetre up to the temperature that ensures heating of stream of gas hydrate and water pulp in its surface layer.

EFFECT: reducing costs for energy, capital costs and current expenditures for gas delivery to consumers, reducing hydraulic friction for movement of gas hydrate.

4 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: gas is preliminary prepared and fed to gas pipeline at pressure with additional intermittent effects applied to transferred gas at pipeline lengths. In preparation, gas hydrate-water pulp with gas hydrate content making up to 50% of its volume is produced. Said pulp is transferred in gas pipeline at thermodynamic conditions that rule pout decomposition of gas hydrate. Thin gas layer is made on gas pipeline inner surface. For this, gas pipeline perimetre is heated at separate lengths to heat the surface of gas hydrate-water pulp to temperature of gas hydrate decomposition.

EFFECT: power, capital costs and operating costs saving, lower drag.

2 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: method for obtaining gas hydrates is implemented at the temperature of +0.2°C and pressure of 1 MPa. In order to cool down gas with water there used is ice-water pulp, preferably with particle size of not more than 10 mcm, which are uniformly distributed along the reactor volume; ice content is about 50% of its volume.

EFFECT: use of this invention allows reducing power, capital and current costs for production of gas hydrate, and reducing material consumption of equipment required for implementation of the method.

3 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: reactor is a reservoir designed for pressure of more than 1 MPa, heat-insulated to maintain temperature at 0.2°C, equipped with a facility of material mixing. At the same time a medium for cooling the mixture of water and gas is a finely dispersed water and ice pulp, for this purpose the device comprises a vacuum ice generator made in the form of a heat-insulated reservoir communicated with a source of sea water and a vacuum outlet of a turbocompressor, preferably made as capable of developing underpressure in the reservoir, which is equal in value to the pressure of the triple point of sea water. Besides, the outlet of the ice generator is communicated with a separator of ice from brine, the ice outlet of which is communicated with the mixer of ice and fresh water. In its turn the source of natural gas is communicated with the gas inlet of the reactor and the gas turbine of the turbocompressor made as capable of using energy of gases, natural gas combustion products, and the second inlet of the reactor, by means of a pulp line of the ice-containing pulp equipped with the first pulp pump is communicated with an accumulator of the ice-containing pulp made in the form of the heat-insulated reservoir. At the same time the hydrate outlet of the reactor is communicated by the pulp line of the hydrate-containing pulp with the accumulator of the hydrate-containing pulp made in the form of the heat-insulated reservoir, as capable of maintaining pressure not below the equilibrium one, excluding dissociation of the hydrate-containing material, with the possibility to discharge hydrate-containing pulp from it, besides, the water outlet of the reactor is communicated with the mixer of ice and fresh water, at the same time the outlet of the ice and fresh water mixer by means of the pulp line of ice-containing pulp equipped with the second pulp pump is communicated with the accumulator of ice-containing pulp.

EFFECT: reduced power inputs for production of hydrates and reduction of weight and dimension characteristics of a set of equipment required to produce hydrates.

4 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: method includes production of gas hydrates, their transportation to a consumer, decomposition of a gas hydrate with production of gas, and is characterised by the fact that the gas hydrate is produced in the form of a water-hydrate pulp with content of gas hydrate particles of around 50% of its volume. At the same time the process to produce gas hydrates is carried out under thermodynamic parameters that correspond to formation of gas hydrate, with heat removal from a mixture of natural gas and water by a water and ice pulp, preferably, with particle size of not more than 10 mcm, with content of ice particles of around 50% of the water and ice pump volume, which are evenly distributed in the reactor volume, transportation of the gas and hydrate pulp is carried out in tight, heat-insulated cargo premises of a vehicle, under thermodynamic parameters that exclude decomposition of the gas hydrate, besides, decomposition of the gas and hydrate pulp with gas removal. Upon completion of its transportation, the pressure in the cargo premise of the vehicle is reduced down to the atmospheric one. At the same time the water and ice pulp produced in process of decomposition of the gas and hydrate pulp is returned, with preservation of its temperature, to the place of production of gas hydrates, where it is used repeatedly in production of the water and ice pulp suitable for production of the gas hydrate.

EFFECT: usage of this invention will make it possible to reduce power, capital and current costs for production of a gas hydrate, and to reduce material intensity of equipment necessary for implementation of the method.

2 cl, 5 dwg

FIELD: transport.

SUBSTANCE: proposed method consists in gas pre-drying, cleaning, compressing and forcing it into pipeline. Note here that gas kinetic head is created inside said pipeline. For this, spaced apart blowers are arranged inside said pipeline. Blowers are supplied via current conducting wires suspended inside pipeline on insulators. Device for gas transport is composed of pipeline pipe lengths. Note here that it comprises blowers and current conductors arranged inside every pipe length. Blowers are supplied via current conducting wires suspended inside pipeline on insulators.

EFFECT: reduced power losses.

9 cl, 10 dwg

FIELD: power industry.

SUBSTANCE: at least one water-moderated nuclear reactor connected via pipeline to turbine and gas injectors with drives is installed in one of compartments. Each turbine is connected by means of shaft to electric generator which is electrically connected through commutator to drives of gas injectors and to storage batteries. Supply and discharge gas lines are introduced tightly and upward vertically inside rugged housing. Detachable connections having the possibility of being connected to supply and discharge branch pipes of gas line and made perpendicular to it are arranged on ends of gas pipelines Branch pipes are installed on both sides of bypass pipeline having two shutoff valves on its ends

EFFECT: higher reliability and safety of operation.

8 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: system consists of at least two parallel arranged ejectors. Additionally and parallel to ejectors there is installed a control valve of main for overflow of active fluid medium. The main of low pressure gas is connected to inputs of the ejectors; the main of high pressure fluid medium is connected to inputs of the ejectors and the control valve via a gate valve. Outputs of the ejectors are connected to an output main via the gate valves; the output of the said control valve is coupled with the output main in case of implementation of gaseous high pressure fluid medium, and with the main of high pressure fluid medium by means of the pump in case of implementation of fluid high pressure medium.

EFFECT: raised efficiency of system operation.

15 cl, 1 dwg

FIELD: pipeline engineering.

SUBSTANCE: method comprises filtering gas, reducing gas pressure, supplying fuel to the stop valve that shuts off the fuel flow when the speed of rotation of the power plant exceeds 105% of the maximum value, and control of the batcher of gas by means of a control unit from the current difference between the reference signal and signal from the pickup of the position of the batching member according to the formula presented. The device comprises filtering system, system for lowering pressure of the gas fuel supplied to the power plant, and system for control of supply of the gas fuel to the power plant. The control system has shutoff valve connected with the batcher that is controlled by the control unit on commands from the electronic controller, and valve for emergency stop that interacts with the gas batcher.

EFFECT: enhanced reliability and prolonged service life.

2 cl, 1 dwg, 3tbl

FIELD: gas industry, possibly compressor stations for increasing pressure of natural gas at transporting it.

SUBSTANCE: compressor station includes gas pumping aggregates, mainly with full-pressure forcing pumps. Said aggregates are connected in parallel through technological pipelines of collector manifold by their inlets to system for preparing at least technological gas and by their outlets to plant for cooling technological gas. Through shut off fittings, supply and discharge pipelines said aggregates are connected to main gas conduit. Plant for cooling technological gas is provided at least with one apparatus for air cooling of gas. Said apparatus includes at least two heat exchange sections, each section having gas pressure vessel in the form of multi-row bundle of ribbed tubes. In one row tubes of said bundle are shifted relative to tubes of adjacent rows of the same bundle. Rows of tubes are mutually divided through spacing members in the form of folded plates having alternating along their length concave and convex portions forming supporting surfaces for tubes of adjacent (along height of bundle) rows. Spacing member has such configuration that extreme cross lines of upper concave portions are shifted along height relative to arbitrary plane passing through respective extreme cross lines of lower concave portions of folded member. Said extreme cross lines may be over said plane by γ1-part of thickness of spacing member and under said plane by value γ2 ≤ 0.11d. Pitch n of wrinkles of folded member along length of spacing member n = (1.01 -1.75)d where d - outer diameter of tube ribs. Improved design of folded spacing members provides optimal operation modes of heat exchange section due to more close arrangement of ribbed tubes in bundle.

EFFECT: enhanced efficiency of compressor station, lowered labor and material consumption, improved factors of heat exchange and operational reliability due to optimized parameters of heat exchange ribbed tube bundle used in compressor station of apparatus for air cooling of gas.

24 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: method for obtaining gas hydrates is implemented at the temperature of +0.2°C and pressure of 1 MPa. In order to cool down gas with water there used is ice-water pulp, preferably with particle size of not more than 10 mcm, which are uniformly distributed along the reactor volume; ice content is about 50% of its volume.

EFFECT: use of this invention allows reducing power, capital and current costs for production of gas hydrate, and reducing material consumption of equipment required for implementation of the method.

3 cl, 3 dwg

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