Continuous drop trap for mass-transfer columns
FIELD: process engineering.
SUBSTANCE: invention relates to device intended for separation of gas (vapour) phase from trapped fluid drops in mass transfer gas-fluid columns. Drop trap for mass transfer columns comprises rings assembled to chains. Rings feature different diameter. Note here that said rings are assembled in different-length chains suspended vertically from the grate. Note here that long chains contact with lower end of fluid top distribution device.
EFFECT: decreased fluid (drop) carry over by gas (vapour) flow at lower drop.
The technical field to which the invention relates.
The device is intended for the separation of gaseous (vapor) phase from the captured droplets of liquid in the column gas-liquid mass transfer devices.
The level of technology
For separation (separation) gas flow (pair) from drops are widely used ring process, replacement, layer installed on the grid in the upper part of the device [1, 2]. In common with the proposed design is of annular form elements and the grill. The disadvantage is a very large hydraulic resistance created by the ring process.
As the droplet separator is also used grid nozzle designed for separation (separation) of gas (vapor) from the droplets . She is a sleeve mesh rolled.
In common with the proposed design is the presence of the grid structure of closed elements arranged vertically.
Disadvantages grid nozzles: shortness of leaking fluid on the nozzle down, as well as the effect of "sponge", when the nozzle starts to accumulate and release the liquid, which affects the separation efficiency, but also creates a lot of resistance (in case of accumulation of fluid).
As the prototype is set to the invention, disclosed in RU 2035991 C1, 27.05.1995, from which the famous droplet separator for separation columns, in the with closed elements, and closed elements represent a ring of the same size, collected in the chain of the same length. In common with the proposed design is the presence of closed elements (rings), collected in the chain.
The disadvantage of the prototype is increased cableone gas flow and increased again cableone.
Disclosure of inventions
Object of the invention is the creation of new high-efficiency does not create a large hydraulic resistance of the droplet separator for separating gas (vapor) from the captured droplets of liquid in the column gas-liquid mass transfer devices.
The technical result of the invention is the reduction of Kaplunova flow of gas (steam), improving plant performance by reducing the hydraulic resistance.
Eliminate these drawbacks and achieve the claimed technical result from implementation of the chain of the droplet separator for separation columns containing chains of closed elements (rings), is ensured by the fact that rings of different sizes are collected in chains of different lengths (2 - short chain, 3 long chains), chains hanging from the lattice (1) (figure 1). Are chains of two types - long and short. Ring size long chain increases down the chain as shown in figure 1. The lower ring chain is the largest in diameter. W is the second ring, counting from the bottom end of the chain, has a diameter of 1.5-2 times smaller than the diameter of the lower ring. The third circle, counting from the bottom ring chain, has a diameter of 1.5-2 times smaller than the diameter of the second ring. All subsequent rings have the same diameter equal to the diameter of the third ring, counting from the bottom end of the chain. Short circuit in 1.2 times shorter than the long chains and consist of different diameter rings. The diameter of the lower ring short circuit equal to the diameter of the lower ring long chain. The second ring short circuit, starting from the lower end of a short chain, has a diameter of 1.5-2 times smaller than the diameter of the lower ring short circuit. All other rings of the same diameter, which is 1.5-2 times smaller than the diameter of the second ring. The specified ratio of the sizes of the rings and lengths of chains allows optimum positioning of the chain section of the column, to ensure the effective separation of gas from liquid droplets and reduce cableone flow of gas (steam). Long and short chains are cross-sectional columns in a checkerboard pattern, with the proportion of long chains to the number of short chains 1:1, that is, 50% of long chains and 50% short. The length of the longest chain is equal to the distance between grid 1 (Fig 1) and the upper switchgear liquid 5. The number of long chains in the longitudinal axial section of the column (shown in figure 1) is determined from the condition: n=D/d, where D is the internal diameter of the column, m; d - the diameter of the lower link in the long chain; n is the number of long chains in the longitudinal axial section of the column. The diameter of the lower ring long chain is selected from the range of 0,02-0,06 m of the Diameter of the lower ring long chain chosen from a specified range depending on the load of the column for gas (pair), size of brythonic and properties of a gas (vapor) and liquid.
To prevent re-entrainment of the ends of long chains of 3 touch the top of the switchgear fluid. In this case, the stream of fluid flowing from the circuit goes directly on top switchgear fluid. Figure 1 is a casing walls marked 4, the upper switchgear fluid denoted by 5. The upper distribution device consists of a pipe with holes for the passage of fluid. The fluid enters at the top of the distribution device of a liquid and exits through holes in the form of multiple jets. The upper distribution device 5 is designed for uniform distribution of the liquid over the cross section of the device.
Brief description of drawings
Figure 1. Chain droplet separator for separation columns. Figure 1 shows a diagram of the chain of the droplet separator for separation columns.
The distinguishing feature of the claimed invention is that the chain is made of different lengths, and rings that make up the ETUI, have a different diameter, increasing down the chain, and the ends of long chains touch the top of the switchgear liquid.
Chain droplet separator is placed in the upper part of the column gas-liquid mass transfer apparatus (absorbers, desorbers, distillation columns). The principle of the device is that when the flow of gas (vapor) through the chain droplet separator the direction of motion of the gas is continuously changing due to the curvature of the channels formed by the chains. Due to the inertial forces of the droplets deposited on the surface of the circuit flowing film on the links of the chains down. Chains have different lengths. Large low-set rings are designed to capture the largest drops of liquid. Small ring located at a higher level, catch small drops. This allows to reduce cableone flow of gas (steam). To prevent re-entrainment of the ends of long chains touch the top of the switchgear liquid.
Chain droplet separator has a high free volume (to 0.93), which allows to reduce the hydraulic resistance and increase performance.
Comparative analysis of the prototype and the proposed device shows that its distinguishing feature is that the rings are different sizes collected in the circuit passing the second length, which are suspended vertically to the bars, and the ends of long chains in contact with the upper switchgear liquid.
The implementation of the invention
Experimental studies in laboratory scale showed that the chain droplet separator is 7-8 times smaller hydraulic resistance than the ring process and greater specific surface area (up to 500 m2/m3).
This device has a low hydraulic resistance due to the fact that the liquid is not retained on the links, and freely flows down. This allows you to increase the plant capacity by reducing the hydraulic resistance. Chain droplet separator reduces cableone (or entrainment of liquid from the apparatus by the flow of gas (steam).
1. Kasatkin A.G. Basic processes and apparatuses of chemical technology. - M.: 1973, 754 S.
2. Dynarski SCI Basic processes and apparatuses of chemical technology. Manual on design. Moscow, Chemistry, 1983, pp.272.
3. Website: www.metaprom.ru.
The droplet separator for separation columns, including rings collected in the circuit, characterized in that the rings have different diameters, and the rings are assembled in a chain of different length, which are suspended vertically to the grid, and long chain touching the lower end of the upper distribution condition the device of the liquid.
SUBSTANCE: regular nozzle contains placed in a parallel way flat disks loosely placed on a horizontal axle, with the adjacent disks being provided with fixed between them two blades, made in the form of a surface of horizontal half-cylinders, facing with its their convex part the opposite sides and forming the nozzle element. External longitudinal edges of each blade are adjoined with disks along their circle, and internal longitudinal edges of each blade are located with a centring error relative to the centre of the disks, equal to 0.1÷0.15 of the disk radius, and edges of blades are located on one axis of the disk symmetry.
EFFECT: increase of efficiency of processes of heat- and mass- exchange, simplification of the apparatus construction and reduction of energy consumption.
8 cl, 13 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: stage tray comprises horizontal belts inclined from column wall and arranged as steps from column wall to opposite wall to make the gap between overlying and underlying belts. Said belts have grate belts on the side extending from overlying belts and edge at the belt opposite side. Edge and grate belt planes are located in parallel and perpendicular to belt plane.
EFFECT: lower hydraulic resistance, higher mass exchange between gas and fluid, operation in the wide range of rates.
FIELD: process engineering.
SUBSTANCE: invention relates to regular nozzles for heat- and mass-transfer process in gas (steam) - fluid system, e.g. rectification, absorption cleaning and drying of natural gas. Besides it can be used in chemical, oil-and-gas industries, etc. Said nozzle consists of vertical parallel sheets coated on both sides with synthetic (polymer) frieze. Length of threads makes 0.007-0.01 m. Spacing between adjacent threads on sheet makes 0.002-0.003 m. Thread diameter makes 0.001-0.002 m. Spacing between sheet surfaces makes up to 0.02-0.03 m. Note here that fluid is fed on said surface from above intermittently to produce wave thereon. Spacing between threads on sheet surface makes at least 0.002 m to rule out thread-to-thread adhesion. Alternate wave wets the threads to coat them with fluid film so that developed surface of contact between gas and fluid is created. Then, next wave comes to carry old film and to produce new film thereon.
EFFECT: developed surface of phase contact, intensive heat exchange.
FIELD: process engineering.
SUBSTANCE: invention relates to regular nozzles for heat-and-mass transfer process in gas (steam)-fluid system, e.g. rectification, absorption cleaning and drying of natural gas. Besides it can be used in chemical, oil-and-gas industries, etc. Said nozzle consists of stacked horizontal element formed from ceramic or plastic materials. Nozzle elements feature curvilinear surface consisting of regular conical ledges and recesses. Note jeer that round through holes are made at ledge top and recess bottom. Said ledges and recesses are staggered so that one ledge is surrounded by four recesses. Walls of said ledges and recesses are either polyhedral (eight faces). Horizontal elements are laid one onto another and jointed together so that holes at adjacent ledge holes overlap to make vertical variable-cross-section gas and fluid passages.
EFFECT: efficient operation, intensive heat-and-mass transfer.
FIELD: process engineering.
SUBSTANCE: in compliance with first version, regular nozzle is composed of a stack of corrugated sheets made of solid or perforated sheets alternated with corrugated sheets of solid or perforated sheets with holes. Holes at made crimps extending parts facing both adjacent corrugated sheets. Distance between openings equals the pitch of crimps. Extending parts of crimps are fitted in holes of adjacent sheet so that clearances are formed between edge of said holes and said part of crimps. In compliance with second version, regular nozzle consists of the stack of sheets alternated with corrugated sheets rectangular or trapezoidal in cross-section from solid or perforated sheets in shape similar to profile of adjacent sheet. End face part of crimps between holes has a cutout.
EFFECT: higher efficiency mass exchange between gas and fluid, lower drag.
2 cl, 6 dwg
SUBSTANCE: invention relates to an improved method of producing unsaturated carboxylates by reacting alkenes containing 2-6 carbon atoms with alkane carboxylic acids containing 1-6 carbon atoms, in the presence of an oxygen-containing gas and a noble metal-based heterogeneous catalyst via a continuous process in a homogeneous gas phase in a reactor. The gas phase is fed into recycling gas and before entering the reactor, is saturated with an alkane carboxylic acid in a saturated designed for this purpose, where before the saturator for saturating with an alkane carboxylic acid (main saturator), there is a pre-saturator in which the recycling gas is saturated with a portion of the alkane carboxylic acid used for saturation, after which the recycling gas is fed into the main saturator and saturated therein with the remaining amount of the alkane carboxylic acid. The invention also relates to an apparatus for realising said method.
EFFECT: use of the presaturator for saturating with acetic acid prolongs the time interval between stoppages of the production process for cleaning the equipment.
10 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: structure packing module with crosswise arrangement of crimps for mass exchange or heat exchange columns to be operated at heavy fouling caused by scale and erosion. Proposed module comprises multiple vertical corrugated plates extending in parallel. Spacers are used for retaining crimps of adjacent plates at definite spacing to decrease possibility of solid particles accumulation at plate surface. Besides, said plates have no orifices nor machined surfaces that can up the accumulation of solid on plates.
EFFECT: perfected design.
20 cl, 4 dwg
FIELD: power engineering.
SUBSTANCE: polymer pipe of a cooling tower sprinkler comprises flat solid walls and is made in the cross section as a rectangle or a square, on the pipe walls there are serially alternating rows of ledges or indents, besides, each ledge or indent are arranged at the angle to the cross section of the pipe from 30° to 45°. Besides, the pipe with rectangular or square cross section is made with rounded corners, in the longitudinal direction the polymer pipe is divided with transverse convex narrow and wide corrugations into sections, at the same time narrow and wide transverse corrugations alternate in turns, in each section there is either at least one row of ledges or at least one row of indents, besides, ledges are made twice wider than the indents, and along the pipe there is serially one section with ledges, two sections with indents, two sections with ledges and one section with indents.
EFFECT: higher intensity of heat and mass exchange with higher reliability of operation of a cooling tower sprinkler assembled from these pipes.
FIELD: power engineering.
SUBSTANCE: polymer pipe of a cooling tower sprinkler comprises flat solid walls and is made in the cross section as a rectangle or a square, besides, on pipe walls there are rows of ledges, and each ledge is arranged at the angle to the cross section of the pipe from 30° to 45°, at the same time the pipe that is rectangular or square in the cross section is made with rounded angles, in the longitudinal direction the polymer pipe is separated with transverse convex corrugations of even width into sections, sections serially alternate into sections with ledges and sections with flat walls, height of ledges is equal to the height of transverse convex corrugations.
EFFECT: increased intensity of heat and mass exchange with increased reliability of operation of a cooling tower sprinkler assembled from these pipes.
FIELD: process engineering.
SUBSTANCE: invention relates to regular adapters to be used in oil-and-gas, chemical, petrochemical and other industries. Proposed adapter comprises packs of a bundle of vertical tubes arranged in parallel that featured cross-section varying along their axes and spacer units composed of horizontal triangular prisms. Note here that prisms in rows adjacent over height are turned through 90 degrees. Tubes in packs in rows adjacent over height are mounted with shift equal to half the tube diameter. Said tubes feature Cassinian oval-shape while ratio between diameters of widest and narrowest cross-sections makes 2:1.
EFFECT: intensified heat-and-mass exchange.
SUBSTANCE: automotive compressed air preparation device allows pre-cleaning of air from such impurities as hydrocarbon compounds, oil-bearing products and air drying. For efficient removal of impurities and steam, proposed device allows heating of compressed air before said cleaning to such temperature whereat gaseous impurities are condensed while water containing in compressed air is released as the steam.
EFFECT: efficient compressed air cleaning.
15 cl, 4 dwg
SUBSTANCE: catalytic composition, represented by general formula XVO4/S, in which XVO4 stands for the transition metal vanadate or mixed vanadate of a transition/rare earth metal and S stands for a TiO2-containing carrier.
EFFECT: invention makes it possible to obtain the V-based catalyst with stability at a temperature higher than 600°C.
17 cl, 8 dwg, 20 tbl
FIELD: oil and gas industry.
SUBSTANCE: invention is related to method for production of combustion gas for gas power engines formed during extraction of associated gas, which contains methane, ethane, propane, hydrocarbons with more than three carbons atoms and propene, as appropriate, at that gaseous and liquid fractions are received by partial condensation of associated gas, moreover, condensation process is performed with such ratio of pressure and temperature that liquid phase in essence does not contain methane, ethane, propane and propene, as appropriate, and gaseous phase in essence is free from n-butane and isobutane.
EFFECT: expanding the method armoury.
8 cl, 2 tbl
FIELD: process engineering.
SUBSTANCE: invention relates to concentrators of fluids, particularly, to compact low-cost effluents concentrators to be connected to waste heat sources that can be used for concentration of fluid. Proposed concentrator comprises gas inlet pipe, gas discharge outlet and flow channel communicating gas inlet pipe and gas discharge outlet. Note here that flow channel comprises contracted section to increase has flow rate therein. Fluid inlet pipe injects fluid in gas flow upstream of contracted section so that gas-fluid mix is completely mixed in flow section to cause the fluid partial evaporation. Mist separator or gas flushing unit downstream of contracted section removes trapped fluid drops from gas flow to return collected fluid into fluid inlet pipe via circulation circuit. Fresh fluid fed for concentration is forced into circulation circuit at the rate sufficient for compensation for fluid evaporated in said flow section.
EFFECT: reliable concentrator, longer life, concentration of fluid that notably differ by their parameters.
20 cl, 16 dwg
SUBSTANCE: modular unit of air purification comprises heating elements, heat-exchanging, heating and catalytic devices connected to each other. The yield of the catalytic device is connected to the heat-exchanging, the sorption device, the filtration device, the ventilation system, and the automatic control system connected to the heating elements placed in the heating device, and the ventilation system. Each device and the system are made as a separate module.
EFFECT: creation of a compact construction which has increased the efficiency of air purification, sterilisation and filtering, enhanced operating characteristics.
5 cl, 4 dwg
SUBSTANCE: pyrolisis liquid is formed by pyrolysis from a raw material with a biobase with the formation of a gaseous pyrolysis product with the pypolysis in the pyrolysis reactor; after that, the product is condensed with obtaining the pyrolysis liquid in a condenser, circulating gas is supplied into the pyrolysis reactor, with circulating gas being transported by a liquid ring compressor into the pyrolysis reactor, being purified before its supply into the pyrolysis reactor; the pyrolysis liquid is used as a liquid layer in the liquid ring compressor. A device for production of the pyrolysis liquid includes, at least, the pyrolysis reactor (1), in which the gaseous pyrolysis product (2) is formed by the pyrolysis of the raw material which has the biobase, supply means (3) of the raw material, which has the biobase, for the supply of the raw material, which has the biobase, into the pyrolysis reactor, the condenser (4), in which the gaseous pyrolysis product (2) is condensed with obtaining the pyrolysis liquid (5), means of gas supply for supply of circulating gas (7) into the pyrolysis reactor, means of circulating gas (7) circulation to provide circulation of circulating gas from the condenser to the pyrolysis reactor, with an installation including the liquid ring compressor (6) for transportation of circulating gas (7) into the pyrolysis reactor from the condenser (4) and purification of circulating gas, the installation includes means of the compressor liquid circulation for transportation of the pyrolysis liquid (5a), used as the liquid layer in the liquid ring compressor from the condenser (4) into the liquid ring compressor (6) and from the liquid ring compressor (6) back into the condenser (4).
EFFECT: pyrolysis liquid from the raw material on the biobase works well as the liquid layer of the liquid ring compressor with an increase of circulating gas quality.
9 cl, 1 dwg, 1 ex
SUBSTANCE: invention relates to method of obtaining solid material, containing ZnO and binding agent, which includes the following stages: preliminary mixing powders, containing at least one ZnO powder, at least one binding agent (stage a), mixing obtained paste (stage b), extrusion (stage c) of paste, obtained at stage b, drying extrudates, calcination (stage d) in flow of oxygen-containing gas.
EFFECT: invention makes it possible to increase physical-mechanical properties of solid material.
9 cl, 1 dwg, 8 tbl
FIELD: process engineering.
SUBSTANCE: invention relates to continuous thermal separation of mixes of materials, particularly, solutions, suspensions and emulsions. Proposed process is divided into main evaporation and degassing to be performed in separate mixers. Main separation is performed in evaporator-mixer while degassing is performed in degassing mixer. Note here that both mixers comprise continuous-operation working and gas chambers. Proposed method consists in that polymer solution thickened in evaporator-mixer is continuously discharged via outlet and fed into degassing mixer. At degassing in degassing mixer, polymer solution temperature is maintained below that which can cause destruction of polymer solution. Note also that temperature is adjusted by addition of volatile or gaseous additives not dissolving in polymer solution at one or several points of degassing mixer.
EFFECT: higher efficiency of degassing.
24 cl, 1 dwg
FIELD: oil and gas industry.
SUBSTANCE: plant comprises raw stock feed pipeline, a separation unit that consists of at least two separation stages, and each stage has an inlet for raw stock and discharges for associated petroleum gas and hydrocarbon mixture with water as well as discharge for oil-water emulsion, at least two stages of gas compression with discharges for gas and liquid hydrocarbons released during gas compression, at that discharges for associated petroleum of separation stages gas are connected to the compression stages by the respective pressure while gas discharge at each compression stage is connected to discharge of associated petroleum gas at the previous separation stage, a gas membrane separation unit with discharges for pretreated gas and permeate connected to gas discharge at the first gas compression stage and a hydrocarbon stabilisation unit with gas discharges for stabilisation and liquid hydrocarbons, which is connected to the discharge of liquid hydrocarbons released at gas compression stages.
EFFECT: invention provides complete utilisation of associated petroleum gas, optimisation of the plant process flow and reduction of capital and operational costs.
27 cl, 3 dwg
SUBSTANCE: method and installation for capturing hydrocarbons include a heat-exchanger-crystalliser, inside which placed are tubes in the form of a serpentine, with a cassette with a carbon sorbent with a device for the sorbent regeneration being installed on the heat-exchanger with its lower base, the heat-exchanger -crystalliser is connected to a heat-exchanger- condenser for cooling and condensation of regeneration products, which is connected to a reactor for production of technical carbon through a water seal, a submersible pump, an accumulation reservoir and a centrifugal pump. A device for the sorbent regeneration is connected via a tight valve to a fixed fan for discharge of purified air into the atmosphere, and via a branch piece - to sources of water vapour and heated air.
EFFECT: invention makes it possible to increase the efficiency of capturing hydrocarbons, reduce content of ash in the target product and reduce the total expenditure on its production.
2 cl, 1 dwg, 1 tbl
FIELD: separating materials by evaporation.
SUBSTANCE: method comprises evaporating in several stages. In the preliminary stage, the aluminate solution is evaporated by the secondary steam supplied from the final stage and heated up to 20-60oC before supplying to the intermediate stage. In the intermediate stage, the solution is evaporated by live steam. Before supplying to the final stage, the solution is mixed with the circulating solution and is evaporated by the secondary steam supplied from the intermediated stage. The device comprises evaporating apparatus with vertical heat exchanging pipes. The end stage is connected with pipelines for supply of initial aluminate solution and secondary steam from the second housing and pipe line for discharging evaporated solution which is connected with the first housing and provided with a heater. The first housing is in communication with the second housing provided with circulation circuit and chamber for boiling of solution arranged above the heat exchanging pipes. The first housing is provided with circulation pipe and external chamber for boiling of solution.
EFFECT: enhanced efficiency.
2 cl, 2 dwg, 2 ex