The method of regeneration inhibitors drying and purification of natural gas
The invention relates to transport gas and is used to restore the high concentration of inhibitors. Saturated solution of inhibitor (PH) after the absorber is heated and enhance the recovery process inhibitor, for which a saturated solution of the inhibitor prior to its evaporation in desorber served in calogeropoulos, where in two stages heat up to temperature, eliminating the boiling and decomposition inhibitor. Given the technological scheme of the method and recommendations the heating temperatures of PH. 2 C.p. f-crystals, 5 Il. The invention relates to gas purification and transportation of gas, and is used to restore the high concentration (regeneration) inhibitors for drying natural gas and the removal of acid components (hydrogen sulfide, carbon dioxide, and so on) and drying in the preparation of the gas to distant transport. Inhibitors: diethylene glycol (DEG), triethylene glycol (TEG), ethanolamine, diethanolamine and others, for example, in the drying process absorb water vapor from the gas. Saturation inhibitors water vapor leads to a decrease in the concentration of the latter, increases consumption and reduces the degree of dehydration.A known method of recovering high concentrations inhib the e regeneration of the decomposition of the actual inhibitor to the formation of organic acids, increasing corrosiveness and reduce absorption properties of the inhibitors. Fire regenerators, i.e., furnaces are characterized by low reliability due to corrosion damage, blown coils and deposits on them.Known technical solution regeneration inhibitors by heating inhibitors steam from the boiler to evaporate the moisture in the desorbers.The disadvantages of the known solutions are large capital costs for construction of boiler plants and operating costs, environmental pollution by emissions of products of combustion and leaks of chemicals used on steam boilers.The known method of regeneration inhibitors drying and purification of natural gas by using diethylene glycol (deg) (see Fig.1).The raw gas enters the bottom section of the absorber 1, where the separation of the condensate, and in the upper part of absorber 1 upward flow of raw gas in contact with a descending stream of the regenerated solution deg. Saturated solution of DAG is given in the collector absorber. The cycle of regeneration (recovery) solution is heated and the residue from the solution of water. Heating nasusunog from the steam boiler 10. The evaporated moisture is released in the form of vapor through the top nozzle columns of desorber 5, and the regenerated solution DAG is cooled in the heat exchanger 9 and the refrigerator. For pumping solution serves as the pump 8. Loss solution deg filled from a separate container to high concentrations of inhibitor before it is fed into the absorber 1. This method is chosen as a prototype (see Jablonski B. C. and others, "Design of oil and gas, Moscow, Hectorthebat, 1959, p.225-227, Fig.79).In the known solutions is not achieved stability recovery of high concentrations of inhibitors, leading to a violation of the regeneration process, which increases the dew point of the gas decreases as the gas to distant transport and increases the loss of inhibitor per unit volume of gas.The claimed invention aims to remedy these disadvantages.The invention solves the problem of improving the controllability of the process of regeneration inhibitors and environmental conditions, a significant reduction in capital and operating costs.Achievable technical result is stabilization of recovery high concentrations of inhibitors and elimination of harmful emissions into the atmosphere.The heating of the saturated solution of the inhibitor are in two stages: the first to 60-90oWith, and the second to a temperature of 10-15oWith a lower boiling point and a decomposition inhibitor.The invention is illustrated by drawings, where Fig.1 shows a diagram of diethylene glycol dehydration by heating the latter in a firing furnace; Fig.2 - the same, with heating in a steam boiler plant; Fig.3 is the same as in Fig. 1, but the firing furnace replaced teplopelengatorom; Fig.4 is the same as in Fig. 2, but steam boiler plant was replaced by teplopelengatorom; Fig.5 - scheme of ablogidneedstore.The method is carried out as follows. Raw gas in the absorber 1 (Fig.4) is in contact with a descending stream of the regenerated solution deg. Saturated solution of deg is removed from the collector absorber 1 and enters the lower part of desorber 3, is heated and fed to the input of ablogidneedstore reviewsa 150oWith, and then enters desorber.In desorber saturating deg moisture is evaporated, and the concentrated solution of deg is fed by the circulation pump 5 into the container 2 and into the absorber 1, which again is in contact with an ascending stream of crude gas.In accordance with the flow diagram (Fig. 3) a saturated solution of deg from the absorber 1 through the heat exchanger 9, weathering and filters is served in the labyrinth of the pump 10 calogeropoulos 11, where it is heated to a temperature of 60-90oC. Passing through calogeropoulos 11, deg is heated to a temperature not exceeding 150oC. it is Preferable to heat the saturated solution of DAG to a temperature of 135-145oC.Heated to the indicated temperature, the solution Daggett served in desorber 1 (Fig. 3), in which the saturating deg moisture evaporates and is discharged from the upper part of desorber 5 through the condenser 6 in the condensate collector 7, and the regenerated concentrated solution of deg pump 8 is fed through the heat exchanger 9 and the fridge in the absorber 1. In the absorber 1 deg again saturated with moisture by absorbing it from the raw gas and a temperature of 15-20oWith returns through the heat exchanger 9 for the next regeneration cycle.When regeneration inhibitors, for drying and ochistka consists of an electric motor explosion-proof execution 12, magnetic clutch 13, which provides complete sealing and environmental regeneration inhibitors, hydraulic pump parts 10 and an additional box of ablogidneedstore 11 (Fig.5).The proposed method differs from existing solutions regeneration inhibitors drying and purification of natural gas: - application for the regeneration inhibitors ablogidneedstore; - use in the hydraulic part of ablogidneedstore magnetic coupling for sealing process; - ensuring the stability of the recovery of high concentrations of inhibitors that meets the technical requirements of the gas to distant transport; - efficiency in connection with the compactness and low capital cost for manufacturing installation ablogidneedstore, as well as minimum maintenance costs due to the need only periodic maintenance of the installation; - the environmentally friendly way of regeneration due to the lack of emission of combustion products into the atmosphere and discharge of chemicals.
Claims1. The method of regeneration inhibitors purification and dehydration of natural gas (GHG) emissions, which consists in applying after drying PG the moisture-saturated solution in which it fed into the absorber, characterized in that intensify the process of recovering high concentrations of inhibitor, to which a saturated solution of inhibitor before evaporation in desorber served in calogeropoulos, where it is heated to a temperature that excludes the boiling and decomposition inhibitor, and the heat of saturated solution of inhibitor are in two stages: first to a temperature of 60 - 90oWith, and the second to a temperature of 10 - 15oC below the boiling point of the inhibitor.2. The method according to p. 1, characterized in that for generating heat when heated saturated solution of inhibitor use centrifugal hydraulic device.3. The method according to p. 1 or 2, characterized in that the regeneration inhibitor for complete sealing of ablogidneedstore applied magnetic coupling.
FIELD: pipeline transport.
SUBSTANCE: power plant is additionally provided with a turbine expander provided with an electric generator. Power generated by the steam plant is directed to the main gas pipeline, and a part of power is directed to the turbine expander with electric generator to produce electric power.
EFFECT: enhanced reliability and efficiency.
1 cl, 1 dwg
FIELD: pipeline transport.
SUBSTANCE: method comprises intensifying extraction of low-pressure gas in tanks of oil stabilization due to rarefying gas in the inlet gas collector that connects the tank with the inlet of liquid-gas jet compressors by mixing the pumping product with active agent and increasing initial pressure of the low-pressure gas up to the pressure required by a consumer with simultaneous condensation of C5+ fraction. The gas-liquid mixture is supplied to the air cooling apparatus. After the separation of gas from the active agent, purifying and drying the compressed gas is intensified by supplying the compressed gas into the vortex pipe and, then, to the consumer.
EFFECT: improved method.
FIELD: oil and gas industry.
SUBSTANCE: device comprises device for enhancing and reducing pressure, receiving gas line for supplying the plant with the gas, discharging gas line through which the gas after purification is supplied from the plant, two vortex pipes, ejector, and condensate collector. The inlet of the first vortex pipe is connected with the receiving gas line and outlet of the cold gas flow of the second vortex pipe through the device for enhancing or reducing pressure. The output of the hot flow of the first vortex pipe is connected with the inlet of the first separator through the ejector, and the condensate outlet of the separator is connected with the inlet of the second vortex pipe. The outlet of the cold flow of the second vortex pipe is connected with the receiving gas.
EFFECT: enhanced quality of purification.
1 cl, 1 dwg
FIELD: preparation and transportation of petroleum associated and natural gases.
SUBSTANCE: invention relates to preparation of gas for transportation along gas pipeline and separation of heavy fraction condensate from gas. Proposed plant for preparation of petroleum associated gas or natural gas for transportation along gas pipeline and obtaining of liquid hydrocarbons from gas intake line, device to increase and decrease pressure, gas flow line, liquid hydrocarbons extraction line, three-circuit heat exchanger, separator, expansion valve, two regulating valves and swirl pipe whose input is connected through pressure increasing and decreasing device from one side with inlet gas line through first regulating valve and through series-connected second regulating valve and first circuit of heat exchanger, and from other side, with output of expansion valve. Output of cold flow of swirl pipe is connected through second circuit of heat exchangers with gas flow line, output of hot flow of swirl pipe is connected through third circuit of heat exchanger with input of separator whose condensate output is connected with line to remove liquid hydrocarbons, and gas output, with input of expansion valve.
EFFECT: increased degree of separation of condensate of heavy fractions of hydrocarbons from petroleum associated gas or natural gas designed for transportation along gas pipeline.
FIELD: the invention refers to energy-conservation technologies of pipeline transportation of natural gas.
SUBSTANCE: it may be used for controlling the technological process of the main pipeline with simultaneous selection out of gas of valuable ethane, propane, butane components. The technical result of the invention is reduction of energy inputs for maintaining pressure in the main pipeline, provision of stabilization of pressure in the main pipeline. The mode of transportation of natural gas along the main pipeline includes its feeding into the main pipeline on the first and the following compressor stations and giving out natural gas from the main pipeline through gas reducing stations and divide it on two flows one of them is directed into the pipeline of high pressure, and the other into a consumer pipe-bend. At that the gas of consumer pipe-bend is preliminary cooled and cleared from condensed and hard fraction, and then further cooling is executed till the temperature below the point of condensation of methane and division of cryogenic liquid and directed to the user, and out of received cryogenic liquid methane is separated from liquid ethane-propane-butane fraction which is returned into the pipeline of high pressure and further into the main pipeline, and detailed methane is directed into the pipe-bend. At that the gas in the pipeline of high pressure is preliminary additionally cooled, compremirated and returned into the main pipeline.
EFFECT: reduces power inputs.
7 cl, 1 dwg
FIELD: storage or transporting of natural gas.
SUBSTANCE: method comprises cooling natural gas down to a temperature below the temperature of the ambient air and transporting the cooled natural gas.
EFFECT: enhanced efficiency of storage and transporting.
16 cl, 13 dwg
FIELD: gas industry.
SUBSTANCE: method comprises separating the mixture into C1 methane fraction with subsequent supply to gas pipeline and C2+ hydrocarbon fraction that are preliminary stabilized by its liquefying by means of preliminary cooling down to a temperature at least 16°C and supplying to the gas pipeline. The pressure is maintained at a level no less than 3,2 MPa.
EFFECT: enhanced reliability of one-phase transporting.
FIELD: oil industry.
SUBSTANCE: supersonic tube comprises Laval nozzle, cyclonic separator with the blade, diffuser for discharging dried gas, and diffuser for discharging condensed liquid. The blade is made of deformed plate set in the screw groove made in the inner side of the cyclonic separator. The length of the plate is at least ½ of the pitch of the screw groove. The housing of the tube of the cyclonic separator receives locking members whose faces enters the screw groove. The distance between the adjacent locking members mounted in the screw groove is equal to the length of the plate.
EFFECT: enhanced efficiency.
FIELD: natural gas industry; other industries; production of the gas pipeline blowoff valves.
SUBSTANCE: the invention is pertaining to natural gas industry and is intended for blowing through of the gas pipelines. The technical result of the invention is the increased efficiency of usage of the gas pipeline blowoff valves at augmentation of the quantity of the delivered for utilization of the waste heavy hydrocarbon fractions of the natural gas for their additional condensation in the area of formation of the microswirlings between the exterior funnel-shaped and interior perforated conical walls. In the gas pipeline blowoff valve in the holes of the perforated conical wall there are the curvilinear grooves, which curvature is directed counterclockwise, and the curvature of the guiding vanes is made in the clockwise direction.
EFFECT: the invention ensures the increased efficiency of usage of the gas pipeline blowoff valves.
FIELD: gas conveyance means, particularly gas-main lines, gathering lines and manifolds of gas fields for condensate recovery.
SUBSTANCE: device to prevent condensate plug forming in pipeline comprises pipeline with inclined sections and connection elbows with enclosing channel. Discharge condensate pipe is formed in lower part of connection elbow. Condensate pipe is located in funnel-shaped enclosing channel and is connected to accumulation vessel located below ground freezing level. Condensate removal pipeline is installed in accumulation vessel so that the condensate removal pipeline is coaxially retained in vertical enclosing channel.
EFFECT: possibility to maintain thermal gas pipeline regime, which prevents condensate freezing, to remove accumulated condensate due to usage of steam condensation heat generated during condensation of steam present in conveying gas flow.