CN113107431A - Low-pressure sulfur-containing natural gas pressurization recovery separation method - Google Patents
Low-pressure sulfur-containing natural gas pressurization recovery separation method Download PDFInfo
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- CN113107431A CN113107431A CN202110402194.8A CN202110402194A CN113107431A CN 113107431 A CN113107431 A CN 113107431A CN 202110402194 A CN202110402194 A CN 202110402194A CN 113107431 A CN113107431 A CN 113107431A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 176
- 239000003345 natural gas Substances 0.000 title claims abstract description 89
- 238000011084 recovery Methods 0.000 title claims abstract description 87
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 59
- 239000011593 sulfur Substances 0.000 title claims abstract description 59
- 238000000926 separation method Methods 0.000 title claims abstract description 49
- 239000002351 wastewater Substances 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims description 67
- 239000007788 liquid Substances 0.000 claims description 28
- 239000010865 sewage Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 description 7
- 239000005864 Sulphur Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000003672 gas field water Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005380 natural gas recovery Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a low-pressure sulfur-containing natural gas pressurized recovery separation method, which relates to the technical field of oil and gas well waste gas treatment, and is characterized in that low-pressure sulfur-containing natural gas in the oil exploitation process is pressurized, mixed and recovered through a pressurized recovery system, and meanwhile, the moisture of the sulfur-containing natural gas is separated and recovered to obtain a sulfur-containing natural gas product and recovered waste water; the beneficial effects of the invention are: when the pressurized recovery system is used for mixed recovery, the high-pressure natural gas and the moisture in the low-pressure sulfur-containing natural gas are distinguished, and the pressurized capacity of the high-pressure natural gas is utilized to separate from the wastewater for extrusion recovery, so that the purpose of jointly recovering the natural gas and the wastewater is realized.
Description
Technical Field
The invention relates to the technical field of waste gas treatment of oil and gas wells, in particular to a method for recycling and separating low-pressure sulfur-containing natural gas in a pressurization mode.
Background
In the fully-closed development process of the sulfur-containing natural gas field, underground sulfur-containing natural gas is subjected to multi-stage depressurization, throttling, filtering, separating and dehydrating, condensate water in the sulfur-containing natural gas field and natural gas is conveyed to a pressurized sewage storage tank in a closed manner, the gas field water is transferred to an automobile sewage tank after being depressurized by a sewage tank, conveyed to a gas field water reinjection well station and treated and reinjected into an underground well, so that the gas field sewage is effectively prevented from being discharged outside, and the environmental protection problem is solved.
In the process of multi-stage pressure reduction and sewage discharge pressure reduction loading, sulfur-containing dissolved gas in a sewage tank is released, low-pressure sulfur-containing natural gas is generated, and the flow rate is closely related to the yield of gas field water and the operation process. The low pressure sour gas present is typically combusted on site into the atmosphere, with SO contained therein2Atmospheric pollutants such as NOx extremely easily pollute the environment, lead to environment and ecological disaster, the most natural gas that contains sulphur that exists simultaneously retrieves and is converted into the liquid with the natural gas, needs multistage recovery, influences the product productivity to current recovery unit can't link and contains sulphur natural gas recovery and waste water recovery processing, leads to both processes to split.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a low-pressure sulfur-containing natural gas pressurized recovery separation method so as to at least achieve the aims of joint recovery and sufficient recovery of natural gas and waste water.
The purpose of the invention is realized by the following technical scheme:
a low-pressure sulfur-containing natural gas pressurized recovery separation method comprises the steps of pressurizing and mixing the low-pressure sulfur-containing natural gas in the oil exploitation process through a pressurized recovery system for recovery, and simultaneously separating and recovering moisture of the sulfur-containing natural gas to obtain a sulfur-containing natural gas product and recovered wastewater.
Preferably, for the purpose of further realizing the combined recovery of the natural gas and the waste water, the pressurized recovery system comprises a separation storage tank; a supercharging device is fixed on one side of the separation storage tank; the top end of the separation storage tank is provided with a detection device; the bottom surface of the separation storage tank is provided with a wastewater recovery device;
the supercharging device comprises a low-pressure air inlet pipe, a high-pressure air inlet pipe and a Venturi tube; the low-pressure air inlet pipe and the high-pressure air inlet pipe are both connected with one end of the Venturi pipe, and the other end of the Venturi pipe is connected with the separation storage tank; the detection device comprises a display screen, a detection controller, an air inlet pressure sensor, an air outlet pressure sensor and a liquid level sensor; the display screen is fixed on the detection controller, and the detection controller is fixed on the top surface of the separation storage tank; the air inlet pressure sensor is fixed in the air inlet end of the Venturi tube, and the air outlet pressure sensor is fixed right above the wastewater recovery device and is fixed at the top end of the inner wall of the separation storage tank; the liquid level sensor is fixed in the wastewater recovery device; the air inlet pressure sensor, the air outlet pressure sensor and the liquid level sensor are all connected with the detection controller through electric signals; the wastewater recovery device comprises a sewage pipe, a recovery tank and a valve; one end of the sewage pipe is arranged in the center of the bottom end of the separation storage tank, the other end of the sewage pipe is fixed with the recovery tank, and a liquid discharge port of the recovery tank is provided with a valve; the valve is connected with a detection controller through an electric signal; the top surface of the recovery tank is provided with the liquid level sensor; the liquid level sensor is connected with a detection controller through an electric signal;
the device comprises a supercharging device comprising a low-pressure air inlet pipe, a high-pressure air inlet pipe and a Venturi tube, and also comprises a detection device comprising a display screen, a detection controller, an air inlet pressure sensor, an air outlet pressure sensor and a liquid level sensor, and a wastewater recovery device comprising a sewage pipe, a recovery tank and a valve; utilize detection device to detect the atmospheric pressure of giving vent to anger the end of the venturi in advancing supercharging device, the detection data of the baroceptor of giving vent to anger of rethread detection controller regulation control waste water recovery device to adjust the valve that contains sulphur natural gas extrusion waste water after mixing and get into waste water recovery device, can control opening and shutting of valve simultaneously, control gas returns to in the separation storage tank, and then realizes the purpose that natural gas and waste water jointly retrieved.
Preferably, in order to further achieve the purpose of sufficient recovery, the venturi tube comprises a gas collecting chamber, a fairing, a mixing chamber and a rotor; the side surface of the gas collection chamber is connected with a high-pressure gas inlet pipe, and the top surface of the gas collection chamber is connected with a low-pressure gas inlet pipe; the air outlet end of the low-pressure air inlet pipe is arranged over against the air inlet pressure sensor; one end of the gas collection chamber, which is far away from the low-pressure gas inlet pipe, is communicated with a mixing chamber; a supersonic nozzle is arranged in the gas collection chamber, one end of the supersonic nozzle is connected with a high-pressure gas inlet pipe, the other end of the supersonic nozzle is abutted against the rotor, and the fairing is arranged at the abutted position of the rotor and the supersonic nozzle; the rotor comprises a pyramid, a rotating blade and a rotating shaft; the pyramid is abutted against the rotating blade, the rotating blade is fixed at one end of the rotating shaft, the center of the side surface of the pyramid is connected with the center of the rotating shaft through a fixed shaft, the fixed shaft is arranged in the rotating shaft, and the fixed shaft is rotationally connected with the rotating shaft through a bearing;
through including the collection chamber, the radome fairing, the venturi of mixing chamber and rotor, recycle includes the pyramid, the rotor of rotor and axis of rotation, the state with the supersonic velocity nozzle acceleration of pressurization of the sulfur-containing natural gas of low pressure simultaneously, the sulfur-containing natural gas after the separate pressure boost of rethread pyramid, with the gas after the acceleration of dispersion pressure boost is quickened to the rotor, the rethread axis of rotation is gas after the acceleration of the pressure boost after the stirring, thereby with the high pressure contain between the sulfur-containing natural gas or the middle pressure contain the sulfur-containing natural gas misce bene, and then further strengthen the pressure of natural gas, convenient follow-up joint recovery processing contains sulfur-containing natural gas and waste water, thereby realize.
Preferably, in order to further achieve the purpose of sufficient recovery, a check valve is arranged in the low-pressure air inlet pipe; through the design of the one-way valve, the low-pressure sulfur-containing natural gas is prevented from generating recharging in the venturi tube due to the pressure effect of the high-pressure sulfur-containing natural gas, so that gas explosion or waste of the low-pressure sulfur-containing natural gas is avoided, and the purpose of recycling and filling is achieved.
Preferably, in order to further achieve the purpose of overall safety of the device, a safety air valve is further arranged at the top end of the separation storage tank and is connected with the detection controller through an electric signal; the pressure difference data between the air inlet pressure sensor and the air outlet pressure sensor are fed back to the detection controller, the detection controller is used for collecting the pressure difference data and judging whether the pressure difference data is in a high-pressure environment or not, so that the opening and closing of the safety air valve are adjusted through the detection controller or the high-pressure air in an emergency state directly pushes the safety air valve open to release air, and the purpose of overall safety of the device is achieved.
The invention has the beneficial effects that:
1. the device comprises a supercharging device comprising a low-pressure air inlet pipe, a high-pressure air inlet pipe and a Venturi tube, and also comprises a detection device comprising a display screen, a detection controller, an air inlet pressure sensor, an air outlet pressure sensor and a liquid level sensor, and a wastewater recovery device comprising a sewage pipe, a recovery tank and a valve; utilize detection device to detect the atmospheric pressure of giving vent to anger the end of the venturi in advancing supercharging device, the detection data of the baroceptor of giving vent to anger of rethread detection controller regulation control waste water recovery device to adjust the valve that contains sulphur natural gas extrusion waste water after mixing and get into waste water recovery device, can control opening and shutting of valve simultaneously, control gas returns to in the separation storage tank, and then realizes the purpose that natural gas and waste water jointly retrieved.
2. Through including the collection chamber, the radome fairing, the venturi of mixing chamber and rotor, recycle includes the pyramid, the rotor of rotor and axis of rotation, the state with the supersonic velocity nozzle acceleration of pressurization of the sulfur-containing natural gas of low pressure simultaneously, the sulfur-containing natural gas after the separate pressure boost of rethread pyramid, with the gas after the acceleration of dispersion pressure boost is quickened to the rotor, the rethread axis of rotation is gas after the acceleration of the pressure boost after the stirring, thereby with the high pressure contain between the sulfur-containing natural gas or the middle pressure contain the sulfur-containing natural gas misce bene, and then further strengthen the pressure of natural gas, convenient follow-up joint recovery processing contains sulfur-containing natural gas and waste water, thereby realize.
3. Through the design of the one-way valve, the low-pressure sulfur-containing natural gas is prevented from generating recharging in the venturi tube due to the pressure effect of the high-pressure sulfur-containing natural gas, so that gas explosion or waste of the low-pressure sulfur-containing natural gas is avoided, and the purpose of recycling and filling is achieved.
4. The pressure difference data between the air inlet pressure sensor and the air outlet pressure sensor are fed back to the detection controller, the detection controller is used for collecting the pressure difference data and judging whether the pressure difference data is in a high-pressure environment or not, so that the opening and closing of the safety air valve are adjusted through the detection controller or the high-pressure air in an emergency state directly pushes the safety air valve open to release air, and the purpose of overall safety of the device is achieved.
Drawings
FIG. 1 is a schematic view of a pressurized recovery system of the present invention;
FIG. 2 is a schematic structural view of the venturi of the present invention;
the device comprises a separation storage tank, a 2-supercharging device, a 21-low-pressure air inlet pipe, a 22-high-pressure air inlet pipe, a 23-venturi pipe, a 231-air collection chamber, a 2311-supersonic nozzle, a 232-fairing, a 233-mixing chamber, a 234-rotor, a 2341-pyramid, a 2342-rotating blade, a 2343-rotating shaft, a 2344-fixed shaft, a 3-detection device, a 31-display screen, a 32-detection controller, a 33-air inlet pressure sensor, a 34-air outlet pressure sensor, a 35-liquid level sensor, a 4-waste water recovery device, a 41-sewage pipe, a 42-recovery tank, a 43-valve and a 5-safety air valve.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
The inlet air pressure sensor 33 and the outlet air pressure sensor 34 both adopt HP203N type universal air pressure sensors;
the liquid level sensor 35 adopts an FW series digital ultrasonic sensor;
the detection controller 32 is a Vortex type gas detection controller.
A low-pressure sulfur-containing natural gas pressurized recovery separation method comprises the steps that low-pressure sulfur-containing natural gas in the oil exploitation process is pressurized, mixed and recovered through a pressurized recovery system, and meanwhile, moisture of the sulfur-containing natural gas is separated and recovered to obtain a sulfur-containing natural gas product and recovered wastewater; when the pressurized recovery system is used for mixed recovery, the high-pressure natural gas and the moisture in the low-pressure sulfur-containing natural gas are distinguished, and the pressurized capacity of the high-pressure natural gas is utilized to separate from the wastewater for extrusion recovery, so that the purpose of jointly recovering the natural gas and the wastewater is realized.
For the purpose of further realizing the combined recovery of natural gas and waste water, the pressurized recovery system comprises a separation storage tank 1; a supercharging device 2 is fixed on one side of the separation storage tank 1; the top end of the separation storage tank 1 is provided with a detection device 3; the bottom surface of the separation storage tank 1 is provided with a waste water recovery device 4;
the supercharging device 2 comprises a low-pressure air inlet pipe 21, a high-pressure air inlet pipe 22 and a Venturi pipe 23; the low-pressure air inlet pipe 21 and the high-pressure air inlet pipe 22 are both connected with one end of the venturi tube 23, and the other end of the venturi tube 23 is connected with the separation storage tank 1; the detection device 3 comprises a display screen 31, a detection controller 32, an air inlet pressure sensor 33, an air outlet pressure sensor 34 and a liquid level sensor 35; the display screen 31 is fixed on the detection controller 32, and the detection controller 32 is fixed on the top surface of the separation storage tank 1; the inlet air pressure sensor 33 is fixed in the inlet end of the venturi tube 23, and the outlet air pressure sensor 34 is fixed right above the wastewater recovery device 4 and fixed at the top end of the inner wall of the separation storage tank 1; the liquid level sensor 35 is fixed in the wastewater recovery device 4; the air inlet pressure sensor 33, the air outlet pressure sensor 34 and the liquid level sensor 35 are all connected with the detection controller 32 through electric signals; the wastewater recovery device 4 comprises a sewage pipe 41, a recovery tank 42 and a valve 43; one end of the sewage pipe 41 is arranged at the center of the bottom end of the separation storage tank 1, the other end of the sewage pipe 41 is fixed with the recovery tank 42, and a liquid discharge port of the recovery tank 42 is provided with a valve 43; the valve 43 is connected with the detection controller 32 through an electric signal; the top surface of the recovery tank 42 is provided with the liquid level sensor 35; the liquid level sensor 35 is connected with the detection controller 32 through an electric signal;
through the supercharging device 2 comprising the low-pressure air inlet pipe 21, the high-pressure air inlet pipe 22 and the venturi pipe 23, the detection device 3 comprising the display screen 31, the detection controller 32, the air inlet pressure sensor 33, the air outlet pressure sensor 34 and the liquid level sensor 35 and the wastewater recovery device 4 comprising the sewage pipe 41, the recovery tank 42 and the valve 43 are adopted; utilize the atmospheric pressure that advances of detection device 3's air pressure sensor 33 detection venturi 23 in advancing supercharging device 2 to give vent to anger the atmospheric pressure of end, the detection data of atmospheric pressure sensor 34 of giving vent to anger again, rethread detection controller 32 adjusts the valve 43 of control waste water recovery device 4 to adjust the post-mixing sulphur-containing natural gas extrusion waste water and get into waste water recovery device 4, can control opening and shutting of valve 43 simultaneously, control gas returns to in the separation storage tank 1, and then realize the purpose that natural gas and waste water jointly retrieved.
For the purpose of further achieving sufficient recovery, the venturi 23 includes a plenum 231, a cowling 232, a mixing chamber 233 and a rotor 234; the side surface of the air collection chamber 231 is connected with a high-pressure air inlet pipe 22, and the top surface of the air collection chamber 231 is connected with a low-pressure air inlet pipe 21; the air outlet end of the low-pressure air inlet pipe 21 is arranged opposite to the air inlet pressure sensor 33; one end of the gas collection chamber 231, which is far away from the low-pressure air inlet pipe 21, is communicated with a mixing chamber 233; a supersonic nozzle 2311 is arranged in the gas collection chamber 231, one end of the supersonic nozzle 2311 is connected with a high-pressure gas inlet pipe 4, the other end of the supersonic nozzle 2311 is abutted against the rotor 234, and the fairing 232 is arranged at the abutted position of the rotor 234 and the supersonic nozzle 2311; the rotor 234 comprises a pyramid 2341, a rotating blade 2342 and a rotating shaft 2343; the pyramid 2341 is arranged in contact with the rotating blade 2342, the rotating blade 2342 is fixed at one end of the rotating shaft 2343, the center of the side surface of the pyramid 2341 is connected with the center of the rotating shaft 2343 through a fixing shaft 2344, the fixing shaft 2344 is arranged in the rotating shaft 2343, and the fixing shaft 2343 is rotatably connected with the rotating shaft 2343 through a bearing;
through including collection chamber 231, fairing 232, venturi 23 of mixing chamber 233 and rotor 234, recycle includes pyramid 2341, rotor 234 of commentaries on classics leaf 2342 and axis of rotation 2343, the pressure boost acceleration state of sulfur natural gas is contained to the while with supersonic velocity nozzle 2311 with higher speed low pressure, rethread pyramid 2341 separates the sulfur-containing natural gas after the pressure boost, with the gas that the dispersion pressure boost is accelerated to commentaries on classics leaf 2342, the gas after the pressure boost after the rethread axis of rotation 2343 accelerates the stirring, thereby with the sulfur-containing natural gas of high pressure or the intermediate pressure sulfur-containing natural gas between the misce bene, and then further strengthen the pressure of natural gas, convenient follow-up recovery of jointly handles sulfur-containing natural gas and waste water, thereby realize the mesh of.
In order to further achieve the purpose of sufficient recovery, a check valve 211 is arranged in the low-pressure air inlet pipe 21; through the design of check valve 211, prevent that the low pressure from containing sour natural gas from producing the recharge because of the pressure effect that the high pressure contains sour natural gas in venturi, lead to the waste of gas explosion or low pressure contain sour natural gas to realize retrieving the purpose of filling.
In order to further realize the purpose of overall safety of the device, a safety air valve 7 is further arranged at the top end of the separation storage tank 1, and the safety air valve 7 is connected with the detection controller 32 through an electric signal; the pressure difference data between the air inlet pressure sensor 33 and the air outlet pressure sensor 34 is fed back to the detection controller 32, the detection controller 32 is used for collecting the pressure difference data and judging whether the pressure difference data is in a high-pressure environment or not, so that the opening and closing of the safety air valve are adjusted through the detection controller 32 or the high-pressure air directly pushes the safety air valve 7 open to release air in an emergency state, and the purpose of overall safety of the device is achieved.
Working process or principle: when the device is adopted, a high-pressure or medium-pressure sulfur-containing natural gas source is connected with a high-pressure air inlet pipe 22, the low-pressure sulfur-containing natural gas source is connected with a low-pressure air inlet pipe 21, the opened check valve 211 enables the low-pressure sulfur-containing natural gas to enter the air collection chamber 231 of the Venturi pipe 23 of the supercharging device 2, meanwhile, the high-pressure or medium-pressure sulfur-containing natural gas also enters the air collection chamber 231 of the Venturi pipe 23 after accelerating through the supersonic nozzle 2311, when a plurality of sulfur-containing natural gases exist in the Venturi pipe 23, the supersonic nozzle 2311 accelerates to enable the air pressure near the fairing 232 to form negative pressure, the low-pressure sulfur-containing natural gas is diffused into the mixing chamber 233 through the air collection chamber 231, meanwhile, the tail end of the supersonic nozzle 2311 abuts against the pyramid 2341 of the rotor 234, the pyramid 2341 is subjected to pressure difference to rotate at high speed to split flow, then the pyramid 2341 rotates through the rotating shaft 2343, therefore, when the pyramid 2341 rotates, the rotation of the rotating shaft 2343 drives the rotating blade 2343 to rotate, high-pressure or medium-pressure sulfur-containing natural gas further enters the separation storage tank 1 and is uniformly mixed with low-pressure sulfur-containing natural gas, in the process, the air inlet pressure sensor 33 opposite to the air outlet end of the low-pressure air inlet pipe 21 receives pressure signals of air pressure and transmits the pressure signals to the detection controller 32, meanwhile, the detection controller 32 transmits the data of the air inlet pressure to the display screen 31 for display, and the air outlet pressure sensor 34 on the top surface of the inner wall of the separation storage tank 1 receives the pressure signals of the air outlet pressure and transmits the pressure signals to the detection controller 32 and then to the display screen 31 for display;
when the water content in the mixed sulfur-containing natural gas is gathered at the bottom of the tank under the action of pressure difference, the sewage pipe 41 collects the wastewater, the wastewater is discharged from the valve 43 at the outlet of the recovery tank 42 through the recovery tank 42 and is recovered, when the liquid level sensor 35 at the top surface of the inner wall of the recovery tank 42 detects that the liquid level in the recovery tank 42 is too low, the liquid level data is transmitted to the detection controller 32 through a transmission mode of electric signals such as a wire or Bluetooth, the PLC in the detection controller 32 calculates corresponding liquid level data, thereby judging that the valve 43 needs to be closed, at the moment, the detection controller 32 controls the motor in the valve 43 to rotate, the valve 43 is closed, the pressure in the recovery tank 42 is increased, after a certain degree, the sulfur-containing natural gas which extrudes the wastewater is transferred from the sewage pipe 41 to the separation storage tank 1, and is detected by the gas pressure sensor 34 and is detected by the detection, when the standard pressure is met, the wastewater enters a collection container through an air outlet of the separation storage tank 1 and is collected, and the combined recovery of the wastewater and the sulfur-containing natural gas is realized through the steps; when the detection data of the outlet air pressure sensor 34 is too large, the detection controller 32 needs to compare the detection data of the inlet air pressure sensor 33, and after the pressure difference is judged to be too large, the detection controller 32 controls the safety valve 5 to open, and simultaneously displays the alarm information on the display screen 31.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A low-pressure sulfur-containing natural gas pressurized recovery separation method is characterized by comprising the following steps: and (3) pressurizing and mixing the low-pressure sulfur-containing natural gas in the oil exploitation process by a pressurizing and recovering system for recovery, and simultaneously separating and recovering the moisture of the sulfur-containing natural gas to obtain a sulfur-containing natural gas product and recovered wastewater.
2. The method for pressurized recovery and separation of low-pressure sour natural gas according to claim 1, wherein: the pressurized recovery system comprises a separation storage tank; a supercharging device is fixed on one side of the separation storage tank; the top end of the separation storage tank is provided with a detection device; the bottom surface of the separation storage tank is provided with a wastewater recovery device;
the supercharging device comprises a low-pressure air inlet pipe, a high-pressure air inlet pipe and a Venturi tube; low pressure intake pipe and high-pressure intake pipe all with venturi's one end connect, venturi's the other end connect the separation storage tank.
3. The method for pressurized recovery and separation of low-pressure sour natural gas according to claim 2, wherein: the detection device comprises a display screen, a detection controller, an air inlet pressure sensor, an air outlet pressure sensor and a liquid level sensor; the display screen is fixed on the detection controller, and the detection controller is fixed on the top surface of the separation storage tank; the air inlet pressure sensor is fixed in the air inlet end of the Venturi tube, and the air outlet pressure sensor is fixed right above the wastewater recovery device and is fixed at the top end of the inner wall of the separation storage tank; the liquid level sensor is fixed in the wastewater recovery device; the air inlet pressure sensor, the air outlet pressure sensor and the liquid level sensor are all connected with the detection controller through electric signals.
4. The method for pressurized recovery and separation of low-pressure sour natural gas according to claim 3, wherein: the wastewater recovery device comprises a sewage pipe, a recovery tank and a valve; one end of the sewage pipe is arranged in the center of the bottom end of the separation storage tank, the other end of the sewage pipe is fixed with the recovery tank, and a liquid discharge port of the recovery tank is provided with a valve; the valve is connected with a detection controller through an electric signal; the top surface of the recovery tank is provided with the liquid level sensor; the liquid level sensor is connected with a detection controller through an electric signal.
5. The method for pressurized recovery and separation of low-pressure sour natural gas according to claim 2, wherein: the Venturi tube comprises a gas collection chamber, a fairing, a mixing chamber and a rotor; the side surface of the gas collection chamber is connected with a high-pressure gas inlet pipe, the top surface of the gas collection chamber is connected with a low-pressure gas inlet pipe, and the gas outlet end of the low-pressure gas inlet pipe is arranged over against the gas inlet pressure sensor; one end of the gas collection chamber, which is far away from the low-pressure gas inlet pipe, is communicated with a mixing chamber; the collecting chamber in be equipped with the supersonic speed nozzle, supersonic speed nozzle one end be connected with high-pressure intake pipe, other end butt the rotor setting, the radome fairing setting be in the rotor with the butt department of supersonic speed nozzle.
6. The method for pressurized recovery and separation of low-pressure sour natural gas according to claim 5, wherein: the rotor comprises a pyramid, a rotating blade and a rotating shaft; the pyramid is abutted against the rotating blade, the rotating blade is fixed at one end of the rotating shaft, the center of the side surface of the pyramid is connected with the center of the rotating shaft through a fixing shaft, the fixing shaft is arranged in the rotating shaft, and the fixing shaft is rotatably connected with the rotating shaft through a bearing.
7. The method for pressurized recovery and separation of low-pressure sour natural gas according to claim 2, wherein: a check valve is arranged in the low-pressure air inlet pipe.
8. The method for pressurized recovery and separation of low-pressure sour natural gas according to claim 1, wherein: and the top end of the separation storage tank is also provided with a safety air valve, and the safety air valve is connected with the detection controller through an electric signal.
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| CN202110402194.8A CN113107431B (en) | 2021-04-14 | 2021-04-14 | Low-pressure sulfur-containing natural gas pressurization recovery separation method |
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Effective date of registration: 20240623 Address after: No. 7 Chuangye Road, Linqiong Town, Qionglai City, Chengdu City, Sichuan Province 611530 Patentee after: CHENGDU CHUANLI SMART FLUID EQUIPMENT CO.,LTD. Country or region after: China Address before: No.5, 1st floor, building 3, No.19, Section 1, Fuqing Road, Chenghua District, Chengdu, Sichuan 610000 Patentee before: Wang Dasheng Country or region before: China |