CN108034465A - A kind of moisture stress expansion recycles dewatering process - Google Patents

Abstract

The invention discloses a kind of moisture stress contracting expansion to recycle dewatering process；The appendix is technique feed channel, and the expanding machine string formation is coupled in technique feed channel；The influidic pipe is working media hydraulic tube, and the expanding machine string formation is coupled on hydraulic tube；The heat-carrying agent medium adapter includes a set of heat-carrying agent medium adapter, and the expansion unit is parallel in heat-carrying agent medium adapter；The system can be utilized well using the release of heat of compression waste heat energy in high pressure ratio expansion process and rationally, not only realize the expansion conveying of low-pressure fluid, system comprehensive benefit is greatly promoted on the basis of pressure ratio is improved, waste heat that can be to be produced in removal process, the conventional dehydration technique for concentrating dehydrating plant is built using heat pump refrigerator and distributed cryogenic separation dehydration scheme section substitution, optimize gas field collection transmission pipe network Pressure level and layout at the same time, reach and extend the life cycle management of pipe network and its related facility inside gas field, substantially reduce and expand during all kinds of gas field developments, the construction cost of dewatering process system and operation, maintenance cost, shorten the construction period.

Description

A kind of moisture stress expansion recycles dewatering process

Technical field

The present invention relates to fossil energy production technique field, and it is low to can also be applied to oil, petrochemical industry, the process gas of Air separation industry The industrial processes correlative technology fields such as warm dehydration, low-temperature heat exchange, complementary energy recycling, purification processing, exploitation accumulating, particularly relate to A kind of and moisture stress expansion recycling dewatering process.

Background technology

All refer to need to handle substantial amounts of gaseous working medium in above-mentioned industrial process, wherein the overwhelming majority is in modern society Highly important role can be play in production and living.Natural gas as energy sources important in existing production and living, such as Shale gas in the ascendant and other unconventional gas reservoirs in China, be equally imbedded in oil underground sealed geological structure it In, it is the basis that the mankind rationally utilize natural gas that it, which exploits exploitation,.Usually in its recovery process, due to density and glue To spend small, the coefficient of expansion is big, and outlet pressure is high during exploitation, is in most cases tens of megapascal, sometimes even up to 80MPa, Its it is outer it is defeated during, temperature declines after reducing pressure by regulating flow, may form solid hydrate with the steam of association, cause pipeline to freeze It is stifled.To enable mined natural-gas to carry out to collect defeated and the frozen block that freezes in pipeline will not occur, flow is at the very start Need to set antifreeze deblocking technology device (such as：Heating furnace, note alcohol process unit or tracing belt for pipeline) and reducing pressure by regulating flow device, Certain temperature is preheating to produced gas additional heat will pass through the equipment such as heating furnace, then just reducing pressure by regulating flow to appropriate outer defeated Pressure, is managed more than the hydrate-formation temperature that the temperature of defeated medium can be maintained under outer defeated pressure condition after being depressured with guarantee, prevented Only there is frozen block caused by hydrate in course of conveying, steady production.

Generally during well head natural gas reducing pressure by regulating flow, throttle the larger pressure difference of front and rear generation, in the prior art, with Upper pressure difference is not utilized, at the same time, it is necessary to is arranged the anti-frozen block measure such as heating furnace, is caused the dual waste of the energy.Separately It is outer need to consume the substantial amounts of energy and could remove part in produced gas bring the vaporous waters of a variety of unfavorable factors so as to from basic Moisture in upper reduction moisture, moisture must carry out dewatering process processing, reach the dew point index of national regulation, it is ensured that dew point exists It is rational horizontal, by traditional dewatering process, it need to generally concentrate and build larger dehydrating plant（Factory）, take considerable soil Ground.

The content of the invention

For above-mentioned phenomenon, analytic induction combs out following Railway Projects：1st, in the link of high pressure moisture reducing pressure by regulating flow, section Stream is front and rear to produce larger pressure difference, the prior art pressure difference（Pressure energy）Do not obtain rational and efficient use；2nd, extra consumption money Source, which carries out heating, prevents hydrate frozen block；3rd, supercharging is concentrated unavoidably to cause moisture collection defeated；4th, dehydration is concentrated unavoidably to make It is pressurized into moisture；5th, the prior art expansion intrinsic design attributes of unit itself are limited, to approach the work of adiabatic expansion pattern, temperature drop It is excessive to cause its adaptability and applicable surface fully meet technological requirement under all kinds of complex working conditions；6th, it is to reveal extraction air water Point is up to standard must be with the concentration dehydrating plant for building extensive highly energy-consuming（Factory）, Design cooling load be often difficult to avoid that it is underload and overload.For It is above-mentioned it is a variety of it is unreasonable cause various uncoordinated unconformable technical problems, a kind of moisture stress expansion that the present invention develops is returned Dewatering process is received more thoroughly to solve well using the elevated pressures energy itself possessed in high pressure moisture recovery process Above-mentioned 6 big problem.Moisture source of the gas collection defeated operating mode of the technique particularly suitable for adjacent two kinds of pressure of height, to utilize high pressure The energy of fluid output meets the pressure-increasing unit and both depoint depressions of low-pressure fluid, reaches cost efficiency on the whole.

A kind of moisture stress expansion recycling dewatering process provided by the invention is solved the problems, such as by following technical essential： Moisture stress expansion recycles dewatering process, including expansion train unit（By the monomer group of two alternating continuous works in parallel Into module）, expansion unit mechanical energy be output to output terminal（Hydraulic motor）Driven again through change gear box output mechanical energy afterwards defeated Go out end load；Appendix；Hydraulic tube；Heat exchanger tube；Hydraulic motor；The appendix, that is, technique feed channel, the expanding machine string formation It is coupled in technique feed channel；The hydraulic tube is that expanding machine string formation is coupled to transmission fluid pressure pipe thereon；The heat exchanger tube is expansion The heat absorption heat exchanger tube of unit parallel connection thereon；The hydraulic motor is the pressure energy recycling output of transmission fluid pressure pipe output mechanical energy End.

Specifically, the arrival end of the technique feed channel is used for transmission the fluid that the higher source of the gas of pressure is exported, in this way, When the fluid from the higher source of the gas of pressure is by the expansion unit, the expansion unit can be rich by high-pressure air source itself Abundant pressure energy is converted to mechanical energy, and the mechanical energy is used to drive other load operations, in this way, being expanded to high-pressure fluid Decompression（Rather than expenditure and pressure）While, the pressure energy discharged is converted into complementary energy time after mechanical energy to appropriate outer defeated pressure Receive, to realize high energy-saving effect.Particularly in existing shale gas-field exploitation, when two neighboring one outlet of platform well clump Pressure is larger, such as reaches tens of megapascal, when another platform well clump outlet pressure is smaller, high-pressure well can be utilized to produce using the present apparatus The mechanical energy compression and low pressure well output gas that outlet expansion is converted, carries out pressure-increasing unit, recycles the mechanical energy being converted and replaces often The compressor mechanical energy consumed during rule technique low pressure well output gas pressure-increasing unit, it is at the same time, swollen using high-pressure well output gas The cold that swollen pressure reduction produces carries out oil gas water three phase separation in hydraulic cylinder, and then realizes that low temperature dewatering is extra without consuming The energy, realize that the energy-saving and emission-reducing technique of the processes such as above-mentioned expansion decompression, compression supercharging, low temperature dewatering optimizes.The system is not only Being capable of the intermolecular compression potential energy of good recovery gases at high pressure, moreover it is possible to it is low to recycle heat movement speed in high-pressure air source expansion process The intrinsic cold energy of gas molecule, the temperature for reducing low-pressure fluid promote its diminution volume to help to compress or be pressurized, improve supercharging Efficiency, and cryogenic separation dewatering process can also substantially substitute concentration to build dehydrating plant in a distributed manner and need to consume a large amount of The common process of the energy, so using dry gas gathering and transportation technology substantially substitute there are certain hidden danger and waste moisture collection it is defeated Technique, generally extends the Life cycle of gas field gathering line, meets that shale gas saves construction cost, reduces operation and maintenance expenses use, The current demand shortened the construction period.

Further technical solution is：

Energy to enable expansion unit to be exported has other purposes, further includes gear-box, the gear-box is at least A piece output shaft, the mechanical output of the expansion unit are connected with the input shaft of gear-box, recycle the energy for oil gas Field field device utilizes, the work of grid-connected or driving load.

When expanding unit inlet pressure and being not enough to outer defeated, to enable gear-box to obtain other mechanical energy to drive Normal outer defeated, the input shaft of the gear-box at least two of process gas thereon, further includes the combustion gas hair being connected with gear-box Motivation or motor, due to main equipment course of work invertibity, that is, become hydraulic motor into hydraulic pump, be that cryogenic heat exchanger adds A set of engine exhaust-powered refrigerator（Heat pump dehumidifier）Connective element can be accordingly adjusted, system is changed into a kind of moisture booster compression heat and returns Receive dewatering process（The technique and respective modules declare invention and utility model patent at the same time）.

To cause in technique feed channel, the fluid of expansion unit rear end, that is, the fluid after depressurizing can utilize expanded The heat of fluid before unit decompression, is produced with reducing or preventing to expand fluid in unit backend process feed channel in course of conveying Polyhydrate was given birth to, further includes First Heat Exchanger, expands the medium in unit front-end process feed channel as First Heat Exchanger Hot fluid, expands cold fluid of the medium in unit backend process feed channel as First Heat Exchanger.As people in the art Member can install the tube side or shell side being mutually applied to by cold and hot fluid in First Heat Exchanger, and corresponding interface is connected on technique In feed channel.

Heat actively can be filled into process gas pipeline internal medium as one kind, to reduce or prevent to generate in unit is expanded Hydrate Plugging fluid flow space, the scheme for generating in subsequent pipeline course of conveying Hydrate Plugging fluid flow space, The heat-exchanger rig for fluid in heating process feed channel is both provided with the technique feed channel of expansion unit front-end and back-end.With The heat source of upper heat-exchanger rig, the heat of this programme preferably gas through being pressurized unit compression, may also come from electric energy, combustion if necessary Heat etc. caused by gas burning.

Electric-heating belt improves its freeze proof and ability of dissolving ice and hydrate for heating hydraulic oil, and prevents cryogenic gas Solidified, and lower part in cylinder is heated to higher temperature in the case where heat carrier takes over the collective effect of input heat, to possess Ice pellets and the hardened ability of hydrate particle caused by depth cooling ice crystal condenses are resisted, and to being likely to accumulate in hydraulic cylinder bottom Solid condensate, play the role of heating resolution and avoid it from causing frozen block, and then core effect of cryogenic separation dehydration.

As a kind of technical solution that can be dehumidified to process gas fluids within pipes, hydrate generation is avoided or reduces, Fluid development late stage in the expansion unit backend process feed channel flows through engine exhaust-powered refrigerator（Heat pump dehumidifier）.

The scheme of continuous work is realized as specific expansion module, the expansion unit includes being sequentially connected in series in process gas The circulation of two or more sets expansion units, alternately air-breathing, expansion, exhaust, air-breathing in pipeline.

The module monomer includes：Pressure vessel body, hydraulic tube, be arranged on the intrinsic two blocks of pipes of pressure vessel The more heat exchanger tubes that plate, both ends are fixedly connected from different tube sheets respectively, two pieces of tube sheets split the intrinsic space of pressure vessel For three mutually independent cavitys：The cloth sap cavity at both ends and the working chamber at middle part, the heat exchanger tube both pass through the working chamber, and Communicating pipe of the heat exchanger tube as two cloth sap cavities；

The fluid pressure line liquid back pipe is introduced into working chamber by the exterior of pressure vessel body, and the outlet nozzle of liquid back pipe is located at The top of working chamber, strengthens exchanging heat with spoiler；

The two gas circuits adapter being connected on pressure vessel body is further included, two gas circuits take over the top phase with working chamber It is logical；

The fluid path adapter being connected on pressure vessel body is further included, the fluid path adapter is communicated with the lower part of working chamber；

Further include be connected on pressure vessel body two heat-carrying agent mediums adapter, different heat-carrying agent mediums adapter from it is different Cloth sap cavity communicate；

Automatic control programming check valve is both provided with gas circuit adapter, influidic pipe and heat-carrying agent medium adapter；

In the expansion unit, respective two gas circuits adapter is coupled to the connector in technique feed channel respectively as expanding machine string formation；

The hydraulic motor that passes through of mechanical energy is exported between expansion unit and load：Expand the fluid path adapter connection of unit Hydraulic motor, the hydraulic motor drive gear-box to be output to load or reducing gear.

The expansion unit that this programme provides is when as expansion cell：The fluid of the heat exchanger tube is flowed through as heat carrier, To be heated to working chamber, reduce or prevent solid matter in working chamber and separate out, i.e., by the heat carrier of one of cloth sap cavity Hot fluid is inputted in medium adapter, the hot fluid completes the cloth liquid to more heat exchanger tubes in the cloth sap cavity, then by more Heat exchanger tube flows through another cloth sap cavity and collects, then is exported in being taken over by corresponding heat-carrying agent medium.And in working chamber, working chamber In house certain volume liquid, and ensure liquid level be located at gas circuit take over position below, the medium in technique feed channel is by wherein A piece gas circuit adapter fills into working chamber and is expanded in working chamber, and the internal pressure in working chamber can store working chamber bottom at this time Long-pending liquid extrudes in being taken over by fluid path, and mechanical energy is converted to by hydraulic motor.Therefore this expansion Unit Scheme, in working chamber Oil gas water three phase separation can be achieved, while decrease temperature and pressure purpose is reached, working chamber can also be used as oil gas water cold catch pot Use, heat exchanger tube at this time is used to absorb cold energy, and fluid path liquid back pipe is used for working chamber top low-temperature expansion gas cycle working fluid Body, through around flowing plate（Recoil baffle）To increase heat exchange.Meanwhile the expansion unit provided using this programme, due to can be by working chamber Set larger, then hydrate influences working chamber negotiability very small, i.e., the expansion unit that this programme provides is to generation A small amount of hydrate can heat resolution at any time, thus exist to it and insensitive.

The expansion unit independent monomer that this programme provides has can not only be used for expanding machine monomer in specified allowable pressure The characteristics of supercharger monomer can be used as, when as compress cell, its main flow is just reciprocal with above-mentioned expansion cell, reciprocal It is to be pressurized working chamber by fluid path adapter, then the gas in working chamber top can be compressed, and heat exchanger tube at this time is used In absorbing thermal energy, pressure feed gas initial temperature is reduced, increases condensation vapor amount of precipitation, fluid path liquid back pipe while improving charging efficiency For to working chamber upper pyrometer compressed gas cycle operation liquid, through around flowing plate（Recoil baffle）To increase heat exchange, its temperature is reduced Degree, while supercharging purpose is reached, working chamber can also be used as three phases separator use.

The present invention has following 6 big beneficial effects：

First, realizing that high pressure moisture expansion is depressured, not only substitute the high pressure moisture conventional heating expenditure and pressure technique of highly energy-consuming, also Its considerable pressure energy is all recycled, while eliminating the open firing points such as heating furnace, yard construction inside gas field is saved and takes up an area.

Second, when gases at high pressure pass through the expansion cell, its pressure complementary energy is converted into mechanical energy, cold energy and is directly recycled Utilize, substantially the conventional consumption fuel heating throttling technique of substitution is avoided overlapping construction, and is reached reduction project cost, is shortened The dual purpose of construction period.

Third, high-pressure fluid, which carries out polytropic expansion pressure process, is substantially reduced to outer defeated pressure, larger temperature drop is produced, it is released The cold energy put is enough to be used in the low temperature gas-liquid separation of itself fluid, achievees the purpose that low cost dehydration, significantly cuts down conventional dehydration Unit scale and energy consumption, so substitute it to a great extent, save construction and operation cost.

Fourth, since aforesaid way cost is relatively low, distributed layout is preferably taken, preferably in gas field internal anhydro, so that in fact Existing dry gas collection is defeated, the defeated internal corrosion protection for being very beneficial for defeated pipe network and its affiliated facility in gas field of dry gas collection, defeated pipe in protection Road system is from potential moisture attack, and gas field inside gathering system life cycle management significantly extends, so as to reduce interior defeated pipeline system Operation and maintenance expenses of uniting are used.

Fifth, supercharging monomer is identical with Expanding Monomer structure described in this programme, and can be general each other, it is easy to adjustment scheduling, therefore Utilization rate of equipment and installations can be greatly improved, simultaneously because cylinder in friction element and high-speed rotating element be not present, its nominal expansion ratio with The optional scope of compression ratio is big, therefore apparatus adaptability and applicable surface can effectively extend.

Sixth, this programme is fully recycling the energy caused by fluid expansion process（Mechanical energy and cold energy）Substitution is normal Rule heating expenditure and pressure, on the basis of highly energy-consuming dewatering process, for the Pressure level of defeated pipe-line system in optimization gas field, in reduction The water dew point of defeated process, improves process energy integration utilization rate, realizes that energy-saving and emission-reduction construction green gas field overall goal is made One possesses great potential and may extend away expansible flexible exploitation basic platform.

Brief description of the drawings

Fig. 1 is a kind of relevant equipment cloth of moisture stress expansion recycling one specific embodiment of dewatering process of the present invention Put figure；

Fig. 2 is Expanding Monomer in a kind of moisture stress expansion recycling one specific embodiment of dewatering process of the present invention Or the structure diagram of supercharging monomer.

Numbering in figure is followed successively by：1st, technique feed channel, 2, heat-exchanger rig, 3, electric-heating belt, 4, gear-box, 5, first changes Hot device, 6, generator（Optional generator motor）, 7, around flowing plate（Recoil baffle）, 8, gas engine, 9, Expanding Monomer, 10, Deviate from water comb, 11, heat pump dehumidifier, 12, cloth sap cavity, 13, tube sheet, 14, gas circuit adapter, 15, heat exchanger tube, 16, liquid back pipe, 17th, fluid path is taken over, 18, heat-carrying agent medium adapter, 20, pressure vessel body, 21, hydraulic motor, 23, hot water circulating pump.

Embodiment

With reference to embodiment, the present invention is described in further detail, but the present invention structure be not limited only to it is following Embodiment.

Embodiment 1：

As depicted in figs. 1 and 2, a kind of moisture stress expansion recycling dewatering process, including expansion cell 9 and appendix, are also wrapped Include the hydraulic motor and gear-box being connected on 9 mechanical output of expansion cell；

The appendix includes technique feed channel 1, and the expansion cell 9 is series in technique feed channel 1.

Specifically, the arrival end of the technique feed channel 1 is used for transmission the fluid that the higher gas field of pressure is exported, this Sample, when the fluid from the higher gas field of pressure passes through the expansion cell 9, the expansion cell 9 can turn pressure energy Mechanical energy is changed to, the mechanical energy is used to drive hydraulic motor to work, in this way, while being depressurized to high-pressure fluid, institute The pressure energy of release is recyclable, preferably it can be utilized to be pressurized the transmission of the pipeline of low-pressure fluid, reach and well opened using natural gas The purpose of energy during adopting.Particularly in existing shale gas-field exploitation, when two neighboring well head outlet pressure one compared with Greatly, tens of megapascal are such as reached, another well head outlet pressure is smaller, available using the present apparatus during such as less than or equal to 2 megapascal The energy of the output of high-pressure well drives the conveying of low pressure well product fluid, saves and is filled into required in low pressure well aerogenesis course of conveying Energy, realize the Green Development in gas field.

Embodiment 2：

As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1：To cause expansion cell 9 defeated The energy gone out can have other purposes, further include gear-box 4, a gear-box 4 at least output shaft, the expansion list The mechanical output of member 9 is connected with the input shaft of gear-box 4, and generator 6 is also associated with the gear-box 4.In the present solution, The torque power generation that the generator 6 is exported using gear-box 4, gained electric power is for Oil Field equipment utilization, grid-connected or driving Draw water pump work, delivers water into eminence to save potential energy, or directly produces compressed air, injection grotto, mined out depleted well etc. Reliable reservoir space carries out energy storage, and the gravitional force of water is converted to electric energy again when electric power is needed.

Expansion cell 9 be not enough to export enough mechanical energy supply its work when, to enable gear-box 4 to obtain in addition Mechanical energy to drive load thereon to work normally, the input shaft of the gear-box 4 at least two further includes and gear-box 4 connected gas engines 8 or motor 6.

To cause in technique feed channel 1, the fluid of 9 rear end of expansion cell, that is, the fluid after depressurizing can be utilized through swollen The heat of fluid before the swollen decompression of unit 9, was being conveyed with reducing or preventing fluid in 9 backend process feed channel 1 of expansion cell Hydrate is produced in journey, further includes First Heat Exchanger 5, the medium in 9 front-end process feed channel 1 of expansion cell is as the first heat exchange The hot fluid of device 5, cold fluid of the medium as First Heat Exchanger 5 in 9 backend process feed channel 1 of expansion cell.As ability Field technique personnel, the correspondence pipeline section in process above feed channel 1 can be directly as the corresponding cold and hot fluid in First Heat Exchanger 5 Pipeline, can also install the pipeline section being mutually applied to by cold and hot fluid in First Heat Exchanger 5, and corresponding pipeline section is connected on technique In feed channel 1.

It is raw to reduce or prevent in expansion cell 9 as one kind can actively into technique feed channel 1, medium fills into heat The side in Hydrate Plugging fluid flow space is generated into Hydrate Plugging fluid flow space, in subsequent pipeline course of conveying Case, the heat exchange for fluid in heating process feed channel 1 is both provided with the technique feed channel 1 of 9 front-end and back-end of expansion cell Device 2.In the present solution, the heat source of above heat-exchanger rig 2 may be from electric energy, heat caused by fuel gas buring, through being pressurized gas Heat of body etc..

During due to being pressurized the fluid pressurized several times for making corresponding fluid after compressed action, such as be compressed, its temperature rise can reach Hundreds of degrees Celsius, rationally to utilize the temperature rise, the heat source of the heat-exchanger rig 2 is the fluid in the pipe of supercharging rear end.It is preferred that , the outlet pressure of existing low pressure inlet, as preferable Pressurization scheme, may set supercharging monomer convection current in 2 megapascal or so Body compresses, and more than fluid pressurized to 5 times of pressure, then the heat-exchanger rig 2 is applied to the fluid before supercharging, reduces its entrance Temperature is so conducive to charging efficiency.

As a kind of technical solution that can be dehumidified to fluid in technique feed channel 1, hydrate generation is avoided or reduces, Further include heat pump dehumidifier 11, the fluid in the 9 backend process feed channel 1 of expansion cell flows through heat pump dehumidifier 11.

Embodiment 3：

The present embodiment is further qualified on the basis of any one technical solution that any of the above one embodiment provides：Figure Shown in 2, the expansion cell 9 and compress cell include：Pressure vessel body 20, liquid back pipe 16, be arranged on pressure vessel sheet The more heat exchanger tubes 15 that two pieces of tube sheets 13, both ends in body 20 are fixedly connected from different tube sheets 13 respectively, two pieces of tube sheets 13 will press Space in force container body 20 is divided into three mutually independent cavitys：The cloth sap cavity 12 at both ends and the working chamber at middle part, institute State heat exchanger tube 15 and both pass through the working chamber, and communicating pipe of the heat exchanger tube 15 as two cloth sap cavities 12；

The liquid back pipe 16 is introduced into working chamber by the exterior of pressure vessel body 20, and the outlet nozzle of liquid back pipe 16 is located at work Make the top of chamber；

Two gas circuit adapters 14 being connected on pressure vessel body 20 are further included, two gas circuit adapters 14 are upper with working chamber Portion communicates；

Further include the fluid path adapter 17 being connected on pressure vessel body 20, the fluid path adapter 17 and the lower part phase of working chamber It is logical；

Further include two heat-carrying agent medium adapters 18 being connected on pressure vessel body 20, different heat-carrying agent medium adapters 18 Communicated from different cloth sap cavities 12；

Check valve is both provided with liquid back pipe 16, gas circuit adapter 14 and fluid path adapter 17；

In the expansion cell 9, two gas circuit adapters 14 are series at the connector in technique feed channel 1 as expansion cell 9；

Between expansion cell 9 and matched load mechanical energy pass through hydraulic motor and gear-box is changed：Expansion cell 9 Fluid path adapter 17 connect hydraulic motor, the hydraulic motor drives gear-box.

In 9 scheme of Expanding Monomer that this programme provides, the structure that the program provides can be used as Expanding Monomer 9 also as increasing Monomer is pressed, when as Expanding Monomer 9：The fluid of the heat exchanger tube 15 is flowed through as heat carrier, to be heated to working chamber, Reduce or prevent hydrate in working chamber to generate, i.e., by inputting hot-fluid in the heat-carrying agent medium adapter 18 of one of cloth sap cavity 12 Body, the hot fluid are completed the cloth liquid to more heat exchanger tubes 15 in the cloth sap cavity 12, are then flowed through separately by more heat exchanger tubes 15 One cloth sap cavity 12 collects, then by being exported in corresponding heat-carrying agent medium adapter 18.And in working chamber, one is housed in working chamber Determine the liquid of volume, and ensure that liquid level is located at below 14 position of gas circuit adapter, the medium in technique feed channel 1 is by a wherein gas Road adapter 14 fills into working chamber and is expanded in working chamber, and the internal pressure in working chamber can accumulate working chamber bottom at this time Liquid is converted to mechanical energy by being extruded in fluid path adapter 17 by hydraulic motor.Therefore 9 scheme of this Expanding Monomer, in working chamber The separation of gas and oil water three-phase can be achieved, meanwhile, the Expanding Monomer 9 provided using this programme, due to working chamber can be set compared with Greatly, then hydrate working chamber negotiability is influenced it is very small, i.e., the Expanding Monomer 9 of this programme offer to the hydrate of generation simultaneously It is insensitive.When as supercharging monomer, it is pressurized by 17 pairs of working chambers of fluid path adapter, then the gas in working chamber top can Compressed, while supercharging purpose is reached, working chamber can also be used as gas-liquid separator use, and heat exchanger tube 15 at this time is used to inhale Receive thermal energy.Above liquid back pipe 16 is used to supplement working fluid to working chamber.

Due to when as compress cell, for enable hydraulic pump to the pressure medium that supercharging monomer working chamber fills into Cold fluid sufficient heat exchange in heat exchanger tube 15, the outlet for being preferably arranged to hydraulic pump are connected with being pressurized the liquid back pipe 16 of monomer. As those skilled in the art, supercharging monomer and Expanding Monomer that above structure type provides at work, the pressure in working chamber Power control is controlled by the negotiability of each check valve in upper liquid back pipe 16, gas circuit adapter 14 and fluid path adapter 17.

Preferably, when the working medium amount increase of circulation is participated in more than, above mechanism has gas-liquid when being such as used as Expanding Monomer 9 Separation function, at this time the amount of the working medium increase back up plus, the fluid path adapter 17 can be passed through in the case of this and carry out discharge opeing, specifically arranged Liquid mode can connect corresponding tapping valve in fluid path adapter 17.Or can be in body 20 upper shed of the compression cylinder adapter below 17 Connect the abjection water comb 10 with tapping valve accordingly.

Above content is to combine the further description that specific preferred embodiment makees the present invention, it is impossible to assert this The embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention, The other embodiment drawn in the case where not departing from technical scheme, should be included within the scope of the present invention.

Claims (8)

1. a kind of moisture stress expansion recycling dewatering process is characterized in that, the wet process gas of high pressure need reduced output voltage expansion work, Recycling expansion cold is used for the occasion of low temperature dewatering, and pressure energy expansion recycling dewatering process is by expansion dewatering unit, connective element The organic system of composition is formed, and expansion dewatering unit is generally by two（Or two or more）The expansion dehydration that structure is substantially the same is single Body（9）And a pair approaches cold catch pot（2）, a cryogenic heat exchanger（5）, a hydraulic motor（21）, technique feed channel（1） The entirety connected each other Deng component by connective element composition, connective element is by one（Speed change）Gear-box（4）, electric tracing Band（3）, water circulating pump（23）And（It is connected with 17,18）Liquid heat, work(exchange the organic system that pipeline is formed, described swollen Swollen dehydration monomer（9）, approach cold catch pot（2）, cryogenic heat exchanger（5）Preferably include：Pressure vessel body（20）, liquid back pipe （16）, recoil baffle（7）, be arranged on pressure vessel body（20）Two pieces of interior tube sheets（13）, both ends respectively from different tube sheets （13）More heat exchanger tubes being fixedly connected（15）, two pieces of tube sheets（13）By pressure vessel body（20）Interior space is divided into three Mutually independent cavity：The cloth sap cavity at both ends（12）And the working chamber at middle part, the heat exchanger tube（15）The working chamber is both passed through, And heat exchanger tube（15）As two cloth sap cavities（12）Communicating pipe.

Pressure vessel body is connected to 2. further including（20）Two gas circuits adapter（14）, two gas circuit adapters（14）With work The top of chamber communicates.

Pressure vessel body is connected to 3. further including（20）On fluid path adapter（17）, the fluid path adapter（17）With working chamber Lower part communicates.

Pressure vessel body is connected to 4. further including（20）On two heat-carrying agent mediums adapter（18）, different heat-carrying agent medium Adapter（18）From different cloth sap cavities（12）Communicate.

5. liquid back pipe（16）, gas circuit adapter（14）And fluid path adapter（17）On be both provided with check valve.

6. the expanding machine（9）, two gas circuit adapters（14）Technique feed channel is coupled to as expanding machine string formation（1）In connector.

7. mechanical energy passes through hydraulic motor progress between the expansion unit external world：Expand the fluid path adapter of unit（17）Connection Hydraulic motor entrance, the hydraulic motor drive change gear box（4）.

8. each separate unit for moisture stress expansion recycling dewatering process（In addition to hydraulic motor）In predetermined process Under the conditions of, capital equipment monomer（9）Only need to make a small amount of necessary adjustment, just can be under expansion, supercharging, separation, heat exchange various working Switching uses.