The method of transportation of gas
(57) Abstract:The invention relates to the gas industry, in particular to a method for transporting gaseous products long distances from source to consumer. The technical result of the invention is to improve the performance of pipeline for gas transportation through the long dewy pipeline and reduce the cost of pipeline isolation. Store liquefied natural gas (nitrogen) is directed to the block filter-dryers, which produces a lowering of the dew point temperature of the gas, and then pumping evaporation plant, which produces the gasification of the liquefied gas and this set increased values of input parameters gas flow, pressure and temperature of the dew point, measure the parameters of the gas at the inlet and outlet of the pipeline and by the value of the dew point temperature of the gas at the outlet adjusting the amount of drying to the desired value by decreasing flow and gas temperature at the outlet and lowering the dew point temperature of gas at inlet, moreover, the process of transporting gas produced in the lower temperature environment. 1 Il. The invention relates to the gas industry, in particular to method t the walls of the method of transportation of gas, consisting in laying under the main gas pipelines-satellites, which convey the refrigerant (U.S. patent N 2942896, CL 285-228, 1970).The implementation of this method requires a large capital expenditure, and the method has insufficient efficiency of transportation.There is a method of transporting gas, which consists in applying technical gas through the inner tube of the coaxial pipe, and cooling protective among - counterflow through the annular space with a speed equal to or greater than the speed of technical gas and.with. The USSR and 918652, CL F 17 D 1/02, 1982).This method has the following disadvantages.The practice of exploitation of implementing its pipelines shows that it leads to high costs for the provision of insulation of the pipeline from the soil by feeding annulus protective environment or refrigerant. The feed rate of the refrigerant limits the capacity of the inner pipeline.The known method of gas transportation, including transport of the gas through the inner tube of the coaxial pipe, the annular space is filled with gas, and the annulus using DL is arousih valves with obtaining a throttling effect, and to increase the refrigeration effect and improving insulation transportation is carried out using at least two annular spaces.with. USSR N 1707425, CL F 17 D 1/02, 1992).The disadvantage of this method is the extra cost of providing thermal insulation of the pipeline.The known method of gas transportation through the pipeline, including the preparation of gas cooling in the initial part of the pipeline to the condensation and cooling of the gas produced by the ejection of condensate on Suzanna pipe section when the pressure on the ejector 0.05-0.1 MPa.with. USSR N 1800214, CL F 17 D 1/02, 1993).The disadvantage of this method is that the dehydration of natural gas actually produced only at the initial section of the pipe and upon further movement of gas through the long dewy pipeline natural gas can be wetted to invalid values, which will lead to additional financial costs for the dehydration of natural gas at the exit of the pipe. The closest technical solution to the claimed is the method of transport of gas /as described in the book of O. M. Ivantsova, A. D. Daurica, "Low-temperature gas, mineral resources, 1980, page 142, 164), including the preparation with gas and pipeline isolation.The technical result of the invention is to improve the performance of pipeline for gas transportation on long hydrated pipeline and reduce the cost of pipeline isolation.It is the fact that the method of transportation of gas through pipelines, including the preparation of gas in it at the gas inlet in the pipeline to produce a lowering of the dew point temperature of the gas using a filter driers liquefied gases, set higher values of input parameters gas flow, pressure and temperature, and the output of the pipeline to measure the current values of output parameters of gas flow, pressure, temperature and dew point temperature, the value of which adjust the amount of drying gas to the desired value by decreasing flow and gas temperature at the outlet and lowering the dew point temperature of gas at inlet, moreover, the entire process of transporting the dried compressed gas carried out by the long wet pipe under conditions of lowering the temperature of the environment.In the drawing given technological scheme that implements this method.The method of gas transportation implemented as follows.From the vault 1 sirinrat gas dew point 2 by removing the moisture from it in the form of ice crystals. Then, the liquefied gas 2 is directed to the pump evaporation plant 4, which produce the gasification of the liquefied gas by compression and evaporation and ask this increased values of input parameters gas flow, pressure and temperature. Then gasified gas is directed in a humidified 5 pipeline length up to 4 km for further transportation to the consumer.Initial and final sections of the pipeline 5 installed meters parameters gasified nitrogen in the form of flow sensors 6 gas pressure gauges 7, thermometers 8 and devices 9 to determine the dew point at the inlet and outlet of the pipeline 5.In the process of transportation vysokogomogennogo gas on long humidified gas due to the pressure difference across the inlet and outlet pipes there is a partial decrease in the gas temperature due to its consumption of heat for evaporation parietal layer of moisture, which is constantly present in the tube in an amount of from 50 to 100 microns (Engineering-physical journal volume 60, No. 5, 1991, S. 804). When properly organized the transportation of gas parietal layer of moisture has a minimal effect on the dew point temperature of the transported gas, in which process oulainen the final section of the pipeline 5 measured current values of output parameters of gas flow, pressure, temperature and dew point temperature, the value of which adjust the amount of drying gas to the desired value by decreasing flow and gas temperature on the yield and lowering the temperature of the dew-point gas inlet pipe. So by increasing the number of pump evaporator 4 increase the pressure and flow of gasified gas. By including additional heating elements in the evaporator pump and the evaporator unit 4 increases the temperature of the gas, and with the help of filter driers 3 carry out the lowering of the dew point at the inlet in the pipeline 5.The entire process of transportation vysokogomogennogo gas is carried out in a lower temperature environment (at night) because when heated outdoor gas pipeline sunlight evaporation of moisture from the parietal layer of the transported vysokoosnaschenny compressed gas, which is getting worse. The method of transportation of gas by pipeline, including the preparation of liquefied natural gas dehydration and gas, characterized in that the drying gas inlet pipe is produced by lowering the dew point temperature using filter driers liquefied gases, at a temperature and the output of the pipeline to measure the current values of output parameters of gas flow, pressure, temperature and dew point temperature, the value of which adjust the amount of drying gas to the desired value by decreasing flow and gas temperature at the outlet and lowering the dew point temperature of the gas at the entrance, and the entire process of transporting vysokogomogennogo compressed gas carried out by the long wet pipe under conditions of lowering the temperature of the environment.
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.