CN116510471B - Oilfield associated gas decarburization system - Google Patents
Oilfield associated gas decarburization system Download PDFInfo
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- CN116510471B CN116510471B CN202310649460.6A CN202310649460A CN116510471B CN 116510471 B CN116510471 B CN 116510471B CN 202310649460 A CN202310649460 A CN 202310649460A CN 116510471 B CN116510471 B CN 116510471B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/104—Carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses an oilfield associated gas decarburization system, which relates to the technical field of carbon dioxide removal of oilfield associated gas (shale gas), wherein a membrane module heat exchanger is arranged on an inlet pipeline of the membrane module, a raw gas inlet of the membrane module heat exchanger is connected with an outlet of a dust filter, and a temperature transmitter and a pressure transmitter are arranged on the pipeline between the connection; the outlet of the membrane component is connected with a qualified associated gas and shale gas flow metering inlet, and a shut-off valve, a gas flow electric regulating valve and a one-way valve are arranged on a connecting middle pipeline. The supercharging assembly provided by the invention adopts a symmetrical air inlet mode, so that the axial stress born by the supercharging component is reduced; no chemical reaction exists in the process of separating carbon dioxide from shale gas, potential harm and pollution do not exist in the local environment, and the method is energy-saving and environment-friendly; the temperature in the pressurizing chamber is reduced by using a cold evaporation mode, and the noise of equipment operation is reduced by adopting a fanless design.
Description
Technical Field
The invention relates to the technical field of carbon dioxide removal of oilfield associated gas (shale gas), in particular to an oilfield associated gas decarburization system.
Background
In oil field petroleum exploitation production, associated gas (shale gas) is conveyed to the ground from the ground along with crude oil, carbon dioxide with more than 4% reaches the ground along with the associated gas (shale gas) due to the difference of initial exploitation and geological structure, the gas still cannot reach the national second-class fuel gas standard after dehydration and desulfurization, and cannot enter a pipe network to be utilized, the crude oil is heated in situ in a conventional treatment mode, the surplus is discharged, and the treatment mode is strictly forbidden along with the improvement of the national environmental protection requirement. The traditional treatment mode adopts an MEA method, a DEA method, a DGA method, a DIPA method and an MDEA method, and the methods have complex process and high energy consumption.
While the prior art, the invention patent with publication number of CN102049173B discloses a method for deeply removing carbon dioxide from a gas mixture, the technical scheme disclosed by the patent comprises the steps of foaming a liquid phase when the carbon dioxide concentration of associated gas (shale gas) changes, the carbon dioxide concentration of an outlet of the associated gas (shale gas) rises sharply, and the regeneration of a medicament has a certain influence on the local environment.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the following technical scheme: the oilfield associated gas decarburization system comprises a mounting seat, and further comprises a membrane assembly heat exchanger, a first temperature transmitter, a second temperature transmitter, a first pressure transmitter, a second pressure transmitter, a first-stage membrane assembly, a variable-frequency carbon dioxide compressor, an associated gas shale gas flow control valve, a carbon dioxide concentration detector, a heat exchanger, a filter, an active carbon storage tank, a first dust filter, a second dust filter, a compressor temperature control cooler, a second-stage first-stage membrane assembly, a membrane assembly differential pressure transmitter, a carbon dioxide-enriched associated gas rock gas flow regulating valve, a membrane assembly heat exchanger, a carbon dioxide concentration detector and a qualified associated gas shale gas flowmeter; the membrane module heat exchanger is arranged on a membrane module inlet pipeline, a raw gas inlet of the membrane module heat exchanger is connected with a first dust filter outlet, and a first temperature transmitter and a first pressure transmitter are arranged on the pipeline between the connection; the outlet of the membrane component is connected with a qualified associated gas and shale gas flow metering inlet, and a shutoff valve, a gas flow electric regulating valve and a one-way valve and a carbon dioxide concentration detector are arranged on a connecting middle pipeline; the outlet of the first-stage membrane component is connected with the second-stage first-stage membrane component through a pipeline, and a second pressure transmitter, a variable-frequency carbon dioxide compressor, a heat exchanger, a filter, an active carbon storage tank, a second dust filter, a membrane component heat exchanger and a second temperature transmitter are arranged on the middle pipeline; the outlet of the secondary first-stage membrane component is connected with the inlet of the secondary second-stage membrane component through a pipeline, and a gas flow regulating valve rich in carbon dioxide associated gas and shale is arranged between the outlet of the secondary first-stage membrane component and the inlet of the secondary second-stage membrane component; the inlet of the second-stage first-stage membrane component outlet desulfurizing tower is connected by a pipeline, and a carbon dioxide concentration detector is arranged in the middle of the connecting pipeline.
Preferably, the variable-frequency carbon dioxide compressor comprises a pressurizing assembly, the pressurizing assembly comprises a pressurizing chamber, pressurizing covers are fixedly installed at two ends of the pressurizing chamber, a steering chamber is rotatably installed in the pressurizing cover through a bearing, steering blades are arranged in the steering chamber, at least four primary pressurizing blade support plates are fixedly installed on the steering chamber, at least nine uniformly distributed primary pressurizing blades are fixedly installed between every two adjacent primary pressurizing blade support plates, a secondary pressurizing blade support plate is fixedly installed on the primary pressurizing blade support plate, and a rotating turbine plate is fixedly installed on the secondary pressurizing blade support plate through the secondary pressurizing blades.
Preferably, the rotating turbine plates are at least fifty, all the rotating turbine plates are fixedly installed together through the connecting support rods, and a gap is formed between every two adjacent rotating turbine plates.
Preferably, the pressurizing chamber is in running fit with the steering cover, a sealing fixed plate is fixedly arranged on the pressurizing chamber, a sealing floating plate is in running contact with the side surface of the sealing fixed plate, a sealing movable frame is fixedly arranged on the steering cover or the steering chamber, and a plate spring is arranged between the sealing movable frame and the sealing floating plate.
Preferably, turn to room, turn to blade, turn to cover, rotatory turbine board, connecting rod, second grade booster blade backup pad, second grade booster blade, one-level booster blade backup pad, one-level booster blade, dust cover, sealed movable frame, sealed floating plate, sealed fixed plate, leaf spring all symmetry set up in the both sides of boost room, be close to two rotatory turbine boards of check baffle both sides and check baffle normal running fit, still be provided with two entry flanges in the intake pipe.
Preferably, the two pressurizing covers are fixedly arranged on the air inlet pipe, the air inlet pipe is symmetrically provided with two variable frequency motors for driving the two-stage supercharging blade support plates to rotate, and the air inlet pipe is fixedly connected with the mounting seat.
Preferably, the pressurizing chamber is further fixedly provided with an exhaust flange through an exhaust port, the pressurizing chamber is hollow, the hollow area is internally provided with evaporative cooling liquid, and the bottom of the hollow area is provided with a reflux port.
Preferably, the compressor temperature control cooler comprises a temperature control assembly, the temperature control assembly comprises a condensation chamber, a backflow prevention frame is fixedly installed in the condensation chamber, a condensation plate is fixedly installed on the condensation chamber, and a radiating fin and a heat absorbing fin are respectively and fixedly arranged on the upper surface and the lower surface of the condensation plate.
Preferably, the height of the non-return flow frame is half of the height of the inner wall of the condensation chamber, the non-return flow frame is communicated with the internal hollow area of the pressurizing chamber through a heat dissipation opening, the condensation chamber is fixedly provided with a mounting seat through a condensation chamber support, the condensation chamber is also fixedly provided with a water pump, a water inlet of the water pump is communicated with the interior of the condensation chamber, and a water outlet of the water pump is communicated with the backflow opening through a backflow water pipe.
Compared with the prior art, the invention has the following beneficial effects: (1) The supercharging assembly provided by the invention adopts a symmetrical air inlet mode, so that the axial stress born by the supercharging component is reduced; (2) The method has no chemical reaction in the process of separating carbon dioxide from shale gas, has no potential harm and pollution to the local environment, and is energy-saving and environment-friendly; (3) The invention reduces the temperature in the pressurizing chamber by utilizing a cold evaporation mode, and reduces the noise of equipment operation by adopting a fanless design.
Drawings
Fig. 1 is a schematic view of a heat sink according to the present invention.
Fig. 2 is a schematic diagram of the water pump of the present invention.
FIG. 3 is a view showing the installation position of the backflow preventing frame of the present invention.
Fig. 4 is a schematic view of the structure of the air inlet pipe of the present invention.
Fig. 5 is a cross-sectional view of the booster component of the present invention.
Fig. 6 is a view of the bearing mounting location of the present invention.
Fig. 7 is a schematic view of the structure of the pressurizing chamber of the present invention.
Fig. 8 is a schematic diagram of the structure of fig. 7 a according to the present invention.
Fig. 9 is a schematic view of the internal structure of the pressurizing chamber according to the present invention.
FIG. 10 is a schematic view of the structure of the support plate of the two-stage supercharging blade of the present invention.
FIG. 11 is a schematic view of the structure of the orbiting scroll plate of the present invention.
FIG. 12 is a schematic view of the structure of a two-stage supercharging blade of the present invention.
FIG. 13 is a schematic diagram of a primary purification and secondary primary decarbonization process of associated gas (shale gas) in accordance with the present invention.
Fig. 14 is an enlarged view of area B of fig. 13 in accordance with the present invention.
Fig. 15 is an enlarged view of region C of fig. 13 in accordance with the present invention.
Fig. 16 is an enlarged view of area D of fig. 13 in accordance with the present invention.
In the figure: 101, an air inlet pipe; 102-an exhaust flange; 103-a variable frequency motor; 104-a pressurized cover; 105-plenum; 1051-heat sink; 1052-a return port; 1053-exhaust port; 106-a steering chamber; 1061—turning vanes; 107-steering cap; 108-grid baffles; 109-rotating turbine plate; 1091-connecting the support rods; 110-a secondary supercharging blade support plate; 1101-two stage supercharging blade; 111-a first stage supercharging blade support plate; 1111-stage supercharging blades; 112-a dust cap; 113-sealing the movable frame; 114-sealing the floating plate; 115-sealing the stator plate; 116-leaf springs; 117-bearings; 201-a condensing chamber; 202-a water pump; 203-a return water pipe; 204-heat sink; 205-heat absorbing sheets; 206-condensing plate; 207-check flow box; 208-condensing chamber holders; 301-a membrane module heat exchanger; 302A-a first temperature transmitter; 302B-a second temperature transmitter; 303A-a first pressure transmitter; 303B-a second pressure transmitter; 304-a first stage one-stage membrane module; 305-variable frequency carbon dioxide compressor; 306-associated gas shale gas flow control valve; 307-carbon dioxide concentration detector; 308-heat exchanger; 309-a filter; 310-an activated carbon storage tank; 311A-a first dust filter; 311B-a second dust filter; 312-compressor temperature control cooler; 313-a two-stage one-stage membrane module; 314—a membrane module differential pressure transmitter; 315-a shale gas flow regulating valve for associated gas rich in carbon dioxide; 316-membrane module heat exchanger; 317-carbon dioxide concentration detector; 318-qualified associated gas shale gas flowmeter; 4-mounting base.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
13-16, the invention provides an oilfield associated gas decarburization system, wherein a primary one-stage purification and secondary one-stage decarburization process of associated gas (shale gas) comprises the following steps: the system comprises a membrane assembly heat exchanger 301, a first temperature transmitter 302A, a second temperature transmitter 302B, a first pressure transmitter 303A, a second pressure transmitter 303B, a first stage one-stage membrane assembly 304, a variable frequency carbon dioxide compressor 305, associated gas, shale gas flow control valve 306, a carbon dioxide concentration detector 307, a heat exchanger 308, a filter 309, an activated carbon storage tank 310, a first dust filter 311A, a second dust filter 311B, a compressor temperature control cooler 312, a second stage one-stage membrane assembly 313, a membrane assembly differential pressure transmitter 314, a carbon dioxide enriched associated gas shale gas flow control valve 315, a membrane assembly heat exchanger 316, a carbon dioxide concentration detector 317, and a qualified associated gas shale gas flowmeter 318. The membrane module heat exchanger 301 is installed on an inlet pipeline of the membrane module 304, a raw material inlet of the membrane module heat exchanger 301 is connected with an outlet of the first dust filter 311A, and a first temperature transmitter 302A and a first pressure transmitter 303A are installed on the pipeline between the connection; an outlet (a residual seepage side) of the first-stage one-section membrane assembly 304 is connected with an inlet of a qualified associated gas shale gas flowmeter 318, and a shutoff valve, a gas flow electric regulating valve 306, a one-way valve and a carbon dioxide concentration detector 307 are arranged on a connecting middle pipeline; the outlet of the first-stage membrane assembly 304 (permeate side) is connected with a second-stage first-stage membrane assembly 313 by a pipeline, and a second pressure transmitter 303B, a variable-frequency carbon dioxide compressor 305, a heat exchanger 308, a filter 309, an active carbon storage tank 310, a second dust filter 311B, a membrane assembly heat exchanger 316 and a second temperature transmitter 302B are arranged on the middle pipeline; an outlet (a residual seepage side) of the second-stage first-stage membrane assembly 313 is connected with an inlet of the second-stage membrane assembly 401 by a pipeline, and a gas flow regulating valve 315 rich in carbon dioxide associated gas and shale is arranged between the outlet and the inlet; the outlet (permeate side) of the second-stage first-stage membrane module 313 is connected by a pipeline to the inlet of the desulfurizing tower, and a carbon dioxide concentration detector 317 is installed in the middle of the connecting pipeline.
As shown in fig. 1-12, in which the variable frequency carbon dioxide compressor 305 includes a pressurizing assembly, the pressurizing assembly includes a pressurizing chamber 105, both ends of the pressurizing chamber 105 are fixedly provided with pressurizing covers 104, a steering chamber 106 is rotatably installed in the pressurizing covers 104 through a bearing 117, steering blades 1061 are provided in the steering chamber 106, at least four primary pressurizing blade support plates 111 are fixedly installed on the steering chamber 106, at least nine uniformly distributed primary pressurizing blades 1111 are fixedly installed between two adjacent primary pressurizing blade support plates 111, a secondary pressurizing blade support plate 110 is fixedly installed on the primary pressurizing blade support plates 111, a rotating turbine plate 109 is fixedly installed on the secondary pressurizing blade support plates 110 through the secondary pressurizing blade 1101, the rotating turbine plates 109 are at least fifty pieces, and all the rotating turbine plates 109 are fixedly installed together through a connecting support rod 1091, a gap is provided between the adjacent two rotating turbine plates 109, the pressurizing room 105 and the steering cover 107 are matched in a rotating way, a sealing fixed plate 115 is fixedly arranged on the pressurizing room 105, a sealing floating plate 114 is contacted with the side surface of the sealing fixed plate 115 in a rotating way, a sealing movable frame 113 is fixedly arranged on the steering cover 107 or the steering room 106, a plate spring 116 is arranged between the sealing movable frame 113 and the sealing floating plate 114, the steering room 106, a steering vane 1061, the steering cover 107, a rotating turbine plate 109, a connecting supporting rod 1091, a secondary pressurizing vane supporting plate 110, a secondary pressurizing vane 1101, a primary pressurizing vane supporting plate 111, a primary pressurizing vane 1111, a dust cover 112, the sealing movable frame 113, the sealing floating plate 114, the sealing fixed plate 115 and the plate spring 116 are symmetrically arranged on two sides of the pressurizing room 105, two rotating turbine plates 109 close to two sides of a grid baffle 108 are matched in a rotating way with the grid baffle 108, two inlet flanges are also arranged on the air inlet pipe 101, the two pressurization covers 104 are fixedly arranged on the air inlet pipe 101, the air inlet pipe 101 is also symmetrically provided with two variable frequency motors 103 used for driving the two-stage supercharging blade support plate 110 to rotate, the air inlet pipe 101 is fixedly connected with the mounting seat 4, the air outlet flange 102 is fixedly arranged on the pressurizing room 105 through the air outlet 1053, the interior of the pressurizing room 105 is hollow, evaporation cooling liquid is arranged in the hollow area, and the bottom of the hollow area is provided with a backflow port 1052.
The compressor temperature control cooler 312 comprises a temperature control component, the temperature control component comprises a condensation chamber 201, a backflow prevention frame 207 is fixedly installed in the condensation chamber 201, a condensation plate 206 is fixedly installed on the condensation chamber 201, cooling fins 204 and heat absorbing fins 205 are fixedly arranged on the upper surface and the lower surface of the condensation plate 206 respectively, the height of the backflow prevention frame 207 is half of the height of the inner wall of the condensation chamber 201, the backflow prevention frame 207 is communicated with the internal hollowed-out area of the pressurizing chamber 105 through a cooling hole 1051, the condensation chamber 201 is fixedly installed on an installation seat 4 through a condensation chamber support 208, a water pump 202 is fixedly installed on the condensation chamber 201, a water inlet of the water pump 202 is communicated with the interior of the condensation chamber 201, and a water outlet of the water pump 202 is communicated with the backflow hole 1052 through a backflow water pipe 203.
The invention discloses an oilfield associated gas decarburization system, which has the following working principle: when in use, a user connects the outlet of the first-stage one-stage membrane assembly 304 (the permeation side) with the inlet flange of the air inlet pipe 101 through a pipeline, when carbon dioxide enters the air inlet pipe 101, the variable frequency motor 103 is started at the moment, the output shaft of the variable frequency motor 103 drives the second-stage supercharging blade supporting plate 110 to rotate, the second-stage supercharging blade supporting plate 110 rotates to drive the second-stage supercharging blade 1101, the first-stage supercharging blade supporting plate 111, the first-stage supercharging blade 1111, the steering chamber 106, the steering blade 1061, the rotating turbine plate 109, the connecting support rod 1091 and the steering cover 107 to rotate, the first-stage supercharging blade 1111 rotates to send carbon dioxide into the steering chamber 106, then the carbon dioxide can move along the axial direction through the steering blade 1061, when the carbon dioxide flows into the steering cover 107, the carbon dioxide is sent into the rotating turbine plate 109 under the action of the second-stage supercharging blade 1101, since one end of the orbiting scroll plate 109 is blocked by the grid baffle 108, carbon dioxide can only flow along the radial direction of the orbiting scroll plate 109, when carbon dioxide flows into the gap between the two orbiting scroll plates 109, since the orbiting scroll plate 109 is rotated while there is a viscous force between the carbon dioxide gas and the orbiting scroll plate 109, the carbon dioxide gas is rotated by the orbiting scroll plate 109 while the carbon dioxide gas is subjected to centrifugal force and tangential force along the rotating direction, and the carbon dioxide gas is also displaced along the tangential direction while rotating, so that the flowing direction of the carbon dioxide gas is not a straight line, the tangential force to which the carbon dioxide gas is subjected increases with the increase of the speed of the orbiting scroll plate 109, thereby resulting in an increase of the path length of the carbon dioxide gas movement (increase of the bending amplitude), thereby improving the efficiency of the rotating turbine plate 109 acting on the carbon dioxide gas, and controlling the rotation speed of the variable frequency motor 103 through the frequency converter along with the change of the pressure, thereby achieving the purpose of energy saving. As the compressed carbon dioxide gas enters the plenum 105, it causes an increase in the temperature within the plenum 105, while the compressed carbon dioxide gas communicates with the secondary one-stage membrane assembly 313 through the vent 1053, the vent flange 102. When the temperature inside the plenum 105 increases, the cooling liquid inside the plenum 105 absorbs the temperature (the hollow area inside the plenum 105 is set to be lower than the atmospheric pressure, the boiling point of the cooling liquid inside the plenum 105 is reduced), at this time, the cooling liquid is heated and evaporated, the evaporated gas flows into the condensation chamber 201 through the backflow prevention frame 207, then condenses on the heat absorbing sheet 205, the condensed cooling liquid falls into the condensation chamber 201, then the water pump 202 is started, and the condensed cooling liquid is sent back into the plenum 105 through the backflow port 1052 through the backflow water pipe 203.
Claims (3)
1. An oilfield associated gas decarburization system comprises a mounting seat (4), and is characterized in that: the system further comprises a membrane assembly heat exchanger (301), a first temperature transmitter (302A), a second temperature transmitter (302B), a first pressure transmitter (303A), a second pressure transmitter (303B), a primary-stage primary membrane assembly (304), a variable-frequency carbon dioxide compressor (305), an associated gas shale gas flow control valve (306), a carbon dioxide concentration detector (307), a heat exchanger (308), a filter (309), an activated carbon storage tank (310), a dust filter (311A), a second dust filter (311B), a compressor temperature control cooler (312), a secondary-stage primary membrane assembly (313), a membrane assembly differential pressure transmitter (314), a carbon dioxide-enriched associated gas rock gas flow control valve (315), a membrane assembly heat exchanger (316), a carbon dioxide concentration detector (317) and a qualified associated gas shale gas flowmeter (318); the membrane assembly heat exchanger (301) is arranged on an inlet pipeline of the membrane assembly (304), a raw material gas inlet of the membrane assembly heat exchanger (301) is connected with an outlet of the first dust filter (311A), and a first temperature transmitter (302A) and a first pressure transmitter (303A) are arranged on the pipeline between the membrane assembly heat exchanger and the first dust filter; the outlet of the membrane component (304) is connected with the inlets of the qualified associated gas and shale gas flowmeter (318), and a shut-off valve, a gas flow electric regulating valve (306), a one-way valve and a carbon dioxide concentration detector (307) are arranged on the middle pipeline; the outlet of the primary first-stage membrane module (304) is connected with the secondary first-stage membrane module (313) through a pipeline, and a second pressure transmitter (303B), a variable-frequency carbon dioxide compressor (305), a heat exchanger (308), a filter (309), an activated carbon storage tank (310), a second dust filter (311B), a membrane module heat exchanger (316) and a second temperature transmitter (302B) are arranged on the middle pipeline; an outlet of the second-stage first-stage membrane component (313) is connected with an inlet of the second-stage membrane component (401) through a pipeline, and a gas flow regulating valve (315) rich in carbon dioxide associated gas and shale is arranged between the outlet and the inlet; the outlet of the second-stage first-stage membrane component (313) is connected with the inlet of the desulfurizing tower through a pipeline, and a carbon dioxide concentration detector (317) is arranged in the middle of the connecting pipeline;
the variable-frequency carbon dioxide compressor (305) comprises a pressurizing assembly, the pressurizing assembly comprises a pressurizing chamber (105), two ends of the pressurizing chamber (105) are fixedly provided with pressurizing covers (104), a steering chamber (106) is rotatably arranged in the pressurizing covers (104) through bearings (117), steering blades (1061) are arranged in the steering chamber (106), at least four first-stage pressurizing blade supporting plates (111) are fixedly arranged on the steering chamber (106), at least nine uniformly-distributed first-stage pressurizing blades (1111) are fixedly arranged between every two adjacent first-stage pressurizing blade supporting plates (111), two-stage pressurizing blade supporting plates (110) are fixedly arranged on the first-stage pressurizing blade supporting plates (111), rotating turbine plates (109) are fixedly arranged on the two-stage pressurizing blade supporting plates (110) through the two-stage pressurizing blades (1101), the rotating turbine plates (109) are at least fifty, all the rotating turbine plates (109) are fixedly arranged together through connecting supporting rods (1091), gaps are formed between every two adjacent rotating turbine plates (109), the pressurizing chamber (105) and the rotating covers (107) are in rotary fit with each other, a sealing plate (115) is fixedly arranged on the rotating plate (115), the steering cover (107) or the steering chamber (106) is fixedly provided with a sealing movable frame (113), a plate spring (116) is arranged between the sealing movable frame (113) and the sealing floating plate (114), the steering chamber (106), the steering vane (1061), the steering cover (107), the rotating turbine plate (109), the connecting support rod (1091), the secondary supercharging vane support plate (110), the secondary supercharging vane (1101), the primary supercharging vane support plate (111), the primary supercharging vane (1111), the dust cover (112), the sealing movable frame (113), the sealing floating plate (114), the sealing fixed plate (115) and the plate spring (116) are symmetrically arranged on two sides of the supercharging chamber (105), two rotating turbine plates (109) close to two sides of the lattice baffle (108) are in rotary fit with the lattice baffle (108), two pressing covers (104) are fixedly arranged on the air inlet pipe (101), two variable frequency motors (103) for driving the secondary supercharging vane support plate (110) to rotate are symmetrically arranged on the air inlet pipe (101), the air inlet pipe (101) is fixedly connected with the mounting seat (4), the air inlet pipe (101) is further provided with two air inlet flanges (105) and the inside of the hollow supercharging chamber (105) is fixedly provided with an exhaust flange (3), the hollow area is provided with an evaporative cooling liquid, and the bottom of the hollow area is provided with a return port (1052).
2. An oilfield associated gas decarbonization system as defined in claim 1, wherein: the compressor temperature control cooler (312) comprises a temperature control assembly, the temperature control assembly comprises a condensation chamber (201), a backflow prevention frame (207) is fixedly installed in the condensation chamber (201), a condensation plate (206) is fixedly installed on the condensation chamber (201), and cooling fins (204) and heat absorption fins (205) are respectively fixedly arranged on the upper surface and the lower surface of the condensation plate (206).
3. An oilfield associated gas decarbonization system as defined in claim 2, wherein: the height of the non-return flow frame (207) is half of the height of the inner wall of the condensation chamber (201), the non-return flow frame (207) is communicated with the internal hollow area of the pressurizing chamber (105) through a heat dissipation opening (1051), the condensation chamber (201) is fixedly installed on the installation seat (4) through a condensation chamber support (208), a water pump (202) is fixedly installed on the condensation chamber (201), a water inlet of the water pump (202) is communicated with the interior of the condensation chamber (201), and a water outlet of the water pump (202) is communicated with the backflow opening (1052) through a backflow water pipe (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310649460.6A CN116510471B (en) | 2023-06-02 | 2023-06-02 | Oilfield associated gas decarburization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310649460.6A CN116510471B (en) | 2023-06-02 | 2023-06-02 | Oilfield associated gas decarburization system |
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| CN116510471A CN116510471A (en) | 2023-08-01 |
| CN116510471B true CN116510471B (en) | 2024-03-29 |
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Inventor after: Xu Pu Inventor after: Zhao Songhe Inventor after: Li Zhengguang Inventor after: Song Haifeng Inventor after: Yang Guohui Inventor after: Li Huajun Inventor after: Zhang Xifeng Inventor after: Fu Baomin Inventor after: Zhang Zeyu Inventor before: Liu Zijun Inventor before: Zhang Zeyu Inventor before: Xu Pu Inventor before: Zhao Songhe Inventor before: Li Zhengguang Inventor before: Song Haifeng Inventor before: Yang Guohui Inventor before: Li Huajun Inventor before: Zhang Xifeng Inventor before: Fu Baomin |