CN110452748B - Physical extraction and enrichment system for coal bed gas - Google Patents
Physical extraction and enrichment system for coal bed gas Download PDFInfo
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- CN110452748B CN110452748B CN201910628583.5A CN201910628583A CN110452748B CN 110452748 B CN110452748 B CN 110452748B CN 201910628583 A CN201910628583 A CN 201910628583A CN 110452748 B CN110452748 B CN 110452748B
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- 239000003245 coal Substances 0.000 title claims abstract description 29
- 238000000605 extraction Methods 0.000 title claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000014759 maintenance of location Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000013500 data storage Methods 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 107
- 238000007789 sealing Methods 0.000 description 37
- 230000000694 effects Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
-
- 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, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention relates to the technical field of organic combustible gas purification, in particular to a physical extraction and enrichment system for coal bed methane. Aim at solving the purification in-process, can't detect gas purity, whether the purity of surveying gas reaches the requirement, perhaps accomplish the back at the purification, get gas to the gas and check after the preliminary treatment again, operation process is complicated, detection speed is slow and measure inaccurate problem, including the container, the detention room, digital sensor and plugging device, wherein the purification gas is through the detention room, digital sensor monitoring gas purity, feedback plugging device controls the gas circulation, make its circulation purification, it is accurate through digital sensor, intelligent control supervision, make gas purity reach the requirement, the gaseous circulation of simultaneous control, promote purification efficiency greatly.
Description
Technical Field
The invention relates to the technical field of organic combustible gas purification, in particular to a physical extraction and enrichment system for coal bed methane.
Background
The gas is formed by decomposing cellulose and organic matters under the action of anaerobic bacteria at the initial stage of stacking ancient plants into coal. In a high-temperature and high-pressure environment, gas is generated continuously due to physical and chemical actions while coal is produced, and the gas is generally exploited in coal mining. The main components of the gas are alkanes, most of which contain small amounts of ethane, propane and butane, and generally contain hydrogen sulfide, carbon dioxide, nitrogen and moisture, as well as trace amounts of inert gases. The gas in the gas has wide application and can be used as a fuel and a raw material for manufacturing substances such as hydrogen, carbon black, carbon monoxide, acetylene, hydrocyanic acid, formaldehyde and the like, so that organic combustible gas in associated gas, waste gas and other gases generated in the fields of petroleum exploration and exploitation, petrochemical industry, mineral deposit exploitation, coal gas production, chemical industry and the like can be purified, the gases can be recycled, and the purposes of energy conservation and environmental protection can be achieved.
At present, in the prior art, oil is mainly used for purifying gas, gas is introduced into the oil, organic combustible gas is dissolved in the oil in the diffusion process, and gas which is insoluble in the oil, such as nitrogen, oxygen and the like, is emitted from a top outlet, and then the organic combustible gas is separated out from the oil, so that the organic combustible gas in the gas is purified. However, in the purification process, the gas purity cannot be detected, whether the gas purity meets the requirement or not is determined, after the purification is completed, the gas is pretreated and then checked, the operation process is complex, the detection speed is low, and the measurement is not accurate.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problem that the gas cannot be subjected to purity detection and control circulation in the purification process in the prior art, so that the gas purification device capable of accurately and intelligently controlling the concentration of the organic combustible gas in the purification process is provided.
In order to solve the problems, the gas purification device comprises a container, wherein a top end outlet is arranged at the upper end of the container (1), a side outlet connected with the container is arranged at one side of the top end outlet, a gas nozzle is arranged at the bottom end of the container, and the gas nozzle and the side outlet are arranged at the same side of the container; the vacuum pump is connected with the top end outlet and used for extracting gas in the container and reducing the gas pressure in the container; a retention chamber connected to the top outlet; the digital sensor is arranged in the detention chamber and is used for detecting the purity of combustible gas of the organism; a circulation port provided in the retention chamber and communicating with the gas nozzle; the collecting port is arranged on the detention chamber and is communicated with a collector for collecting the organic combustible gas; the plugging device is arranged in the detention chamber and is used for opening a collection port or a circulation port of the detention chamber so as to collect or return organic combustible gas into the container; and the control end is connected with the digital sensor and the plugging device and controls the action of the plugging device according to the feedback of the digital sensor.
The plugging device comprises a first sealing plate for plugging the collecting port, a second sealing plate for plugging the circulating port and an adjusting piece for controlling the first sealing plate and the second sealing plate to slide.
The circulation port and the collection port are vertically arranged on the side wall of the detention chamber relatively, the sliding directions of the first sealing plate and the second sealing plate are perpendicular to each other, and the adjusting piece adjusts the sliding of the first sealing plate and the second sealing plate to alternatively block the collection port and the circulation port.
The adjusting part comprises a first connecting rod vertically arranged on the first sealing plate and a second connecting rod arranged on the second sealing plate, the first connecting rod and the second connecting rod are perpendicular to each other, and the end parts of the first connecting rod and the second connecting rod, which are close to one side, are respectively provided with wedge blocks matched with each other.
The adjusting piece further comprises a tension spring, one end of the tension spring is abutted to one side, away from the second connecting rod, of the second sealing plate, and the other end of the tension spring is abutted to the side wall of the detention chamber.
The detention chamber is provided with a driving cylinder, an output shaft of the driving cylinder extends into the detention chamber and is fixedly connected with the first connecting rod, and the first connecting rod is driven to plug or open the collection port.
The digital sensor and the driving cylinder are both in communication connection with a control end and used for controlling the action of the driving cylinder according to the detection result of the digital sensor.
The control end comprises at least one personal computer and at least one programmable logic controller which adopts a stack algorithm to store data, and the personal computer and the programmable logic controller carry out data synchronization.
The container is internally provided with filter screens, the filter screens are uniformly distributed along the height direction of the container, and the apertures of the filter screens are gradually decreased from bottom to top layer by layer.
And a liquid level detector is arranged in the side outlet.
The technical scheme of the invention has the following advantages:
1. according to the physical extraction and enrichment system for the coal bed gas, provided by the invention, the plugging device is arranged, purified gas passes through the detention chamber, the digital sensor performs data detection on the gas, if the purified gas does not reach the standard, the plugging device plugs the collection port, the circulation port is opened, and the gas is circularly purified in the container through the gas nozzle; if reach standard, plugging device shutoff circulation mouth opens the collection mouth, and gas gets into the receiving flask from the collection mouth. Through digital sensor is accurate, intelligent control prison for when gas purity reaches the requirement, the circulation of control gas, purification efficiency has obtained promoting greatly.
2. The physical extraction and enrichment system for the coal bed methane provided by the invention comprises a first sealing plate, a first connecting rod, a second sealing plate and a second connecting rod, wherein the first sealing plate and the first connecting rod are fixedly connected; when first shrouding upwards slides shutoff collection mouth, the second shrouding can slide towards keeping away from collection mouth direction simultaneously to open and collect the mouth.
3. According to the physical extraction and enrichment system for the coal bed methane, the tension spring is arranged between the second sealing plate and the inner wall of the retention chamber, and under the action of the tension spring, when the first sealing plate is driven to slide upwards, the second sealing plate can smoothly and quickly slide towards the direction far away from the circulation port, so that the physical extraction and enrichment system for the coal bed methane is simple in structure and obvious in effect.
4. According to the physical extraction and enrichment system for the coal bed methane, the arrangement of the driving cylinder drives the first connecting rod to slide up and down, so that the stability of the first sealing plate in sliding up and down is ensured; and the cylinder structure is simple relatively, only need with its drive shaft stretch into the detention indoor can, avoid taking up more indoor space of detention.
5. According to the physical extraction and enrichment system for the coal bed methane, the control end is arranged, the driving cylinder is controlled to act according to the detection result of the digital sensor, so that the purity of the gas meeting the collection requirement can be ensured, and the intelligent automation program of the system can be improved.
6. The physical extraction and enrichment system for the coal bed methane, provided by the invention, adopts a stack algorithm to store data, so that repeated coverage of the data is realized, namely, if new data comes in the latest data, the old data is replaced by the coverage; in addition, data synchronization is performed between the personal computer and the programmable logic controller, and information loss is prevented.
7. According to the physical extraction and enrichment system for the coal bed methane, the filter screen is arranged, so that when gas passes through the filter screen, organic components in the gas are dissolved in oil, and the dissolving effect of organic combustible gas is fully exerted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a physical extraction and enrichment system for coal bed methane according to the present invention;
FIG. 2 is a cross-sectional view of a plugging device in a physical extraction and enrichment system for coal bed methane according to the present invention;
fig. 3 is a schematic diagram illustrating connection of internal modules of a physical extraction and enrichment system for coal bed methane according to the present invention.
Description of reference numerals:
1-a container; 11-a filter screen; 12-a top outlet; 13-side outlet; 14-a valve; 15-gas nozzles; 16-a vacuum pump; 17-gas path interface; 2-a retention chamber; 20-a circulation port; 21-a digital sensor; 22-a collection port; 23-an occlusion device; 24-a first closure plate; 25-a second closing plate; 3-a retention chamber; 31-a first link; 32-a second link; 33-a wedge block; 34-a tension spring; 4-driving the cylinder; 5-a control end; 51-a personal computer; 52-programmable logic controller; 53-a control unit; 54-a database unit; 55-an alarm unit; 6-liquid level detector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A physical extraction and enrichment system for coal bed methane is disclosed, as shown in figure 1, and comprises a container 1 and a detention chamber 2, wherein gas is guided into the container, the rising process of gas in the container 1 and the oil are fully dissolved and diffused by utilizing the principle that organic molecular gas is easily dissolved in the oil and ordinary air is not easily dissolved in the oil, and the characteristic that organic combustible gas in the oil is separated from the oil at low pressure, wherein the ordinary gas which is not dissolved in the gas and the oil is risen to a top outlet 12 and is discharged out of the container 1, and in addition, the oil dissolved with the gas is guided into the detention chamber 2 from the container 1, and can be collected after oil-gas separation, thereby realizing the reutilization of the gas once, and achieving the purposes of energy conservation and environmental protection.
As shown in figure 1, a plurality of layers of filter screens 11 are arrayed in the container 1, and the aperture of each filter screen 11 is gradually reduced from bottom to top, so that when gas upwards passes through the filter screens 11, large bubbles are changed into fine bubbles, and organic components in the gas are dissolved in the oil. More preferably, a granular filler made of glass, ceramic or stainless steel can be arranged between every two filter screens 11, and the diameter of the granular filler is 0.5-5 mm, so that the oil is prevented from having too large contact surface with the external atmosphere, and excessive organic combustible gas in the oil is prevented from overflowing into the atmosphere. In other embodiments of the present invention, a cloth layer or an asbestos layer may be used to replace the stainless steel filter screen 11, and the middle portion of the cloth layer is raised by 0.2-5 cm, so as to ensure that the gas is diffused upward from the middle portion of the cloth layer, and fully exert the dissolving effect of the organic combustible gas.
As shown in fig. 1, a liquid level detector 6 is arranged in the side outlet 13, when the oil in the container 1 does not contact the liquid level detector 6, an alarm is generated, at this time, the oil does not completely block the side outlet 13, and a manager is prompted to continue to reduce the air pressure or add the oil which is used for purifying the organic gas and is not easy to volatilize into the container.
As shown in fig. 1, a detention chamber 3 is arranged outside the side outlet 13, the structure of the detention chamber 3 is consistent with that of the detention chamber 2, one end of the detention chamber 3 is connected with the atmosphere, the other end of the detention chamber 3 is connected with a gas nozzle 15, the type of gas is detected by a sensor in the cavity of the detention chamber 3, and before purification begins, common gas is discharged into the atmosphere through the detention chamber 3; when the purity of the gas is not up to the standard, the air pressure in the container 1 is reduced, and the mixed gas in the container 1 enters the gas nozzle 15 for purification again.
However, in the purification process, the purity of the gas cannot be detected, and whether the purity of the gas meets the use requirement is examined. In order to solve this problem, as shown in fig. 2, a digital sensor 21 is provided in the inner cavity of the retention chamber 2 to detect the gas purity, and a plugging device 23 for controlling the gas circulation is provided in the inner cavity of the retention chamber 2. Therefore, firstly, the gas purity is detected by the digital sensor 21, and if the gas purity meets the requirement, the device 23 is plugged, the collection port 22 is opened, the circulation port 20 is closed, and the gas is collected; if the gas does not reach the required purity, the device is plugged, the circulation port 20 is opened, and the collection port 22 is closed, so that the gas is circularly purified until the purity requirement is met.
As shown in fig. 2, the blocking device 23 includes a first sealing plate 24 and a second sealing plate 25, the first sealing plate 24 is slidably mounted in the retention chamber 2 in the vertical direction, the second sealing plate 25 is slidably mounted in the retention chamber 2 in the horizontal direction perpendicular to the side surface where the collection port 22 is located, and the first sealing plate 24 and the second sealing plate 25 are adjusted by the same adjusting member, so that the first sealing plate 24 and the second sealing plate 25 alternately block the collection port 22 and the circulation port 20, thereby controlling the flow state of the collection port 22 and the circulation port 20. Namely, when the gas purity circulation purification work is carried out, the adjusting piece adjusts the first sealing plate 24 to slide upwards, the second sealing plate 25 slides towards the direction far away from the circulation port 20, so that the circulation port 20 is opened, the gas enters the oil liquid in the container 1 again to be purified, and the circulation port 20 is sealed and the collection port 22 is opened until the digital sensor 21 detects that the purity is qualified.
As shown in fig. 2, the adjusting member includes a first connecting rod 31 vertically disposed on the first sealing plate 24, a second connecting rod 32 is disposed on the second sealing plate 25, the first connecting rod 31 and the second connecting rod 32 are perpendicular to each other, and wedge blocks 33 are disposed at ends of the two adjacent to one side and engaged with each other. When the first connecting rod 31 is driven to slide, the second connecting rod 32 is driven to move along with the first connecting rod under the action of the inclined surfaces of the two wedge-shaped blocks 33, so that when the first sealing plate 24 slides downwards, the second sealing plate 25 can slide towards the direction close to the circulation port 20; while the first closure plate 24 is slid upwardly to close off the outlet port 22, the second closure plate 25 can be simultaneously slid away from the circulation port 20 to open the circulation port 20. And this configuration can reduce the space occupied by the first and second closure plates 24 and 25 in the retention chamber 2 so as to facilitate the delivery of more gas.
In order to guarantee that the first closing plate 24 of drive slides upwards, the second closing plate 25 can be smoothly and fast to keeping away from circulation mouth 20 direction and slide, as shown in fig. 2, set up the groove of stepping down (not sign in the figure) on the lateral wall that detention room 2 and collection mouth 22 meet, second closing plate 25 is kept away from second connecting rod 32 one side and is equipped with the tension spring 34 of installing in the inslot of stepping down, tension spring 34 sets up along the slip direction of second closing plate 25, thereby under the effect of tension spring 34, make second closing plate 25 slide to keeping away from circulation mouth 20 direction fast, the steam generator is simple in structure, and the effect is obvious.
As shown in fig. 2, a driving cylinder 4 is vertically installed at the bottom of the detention chamber 2, and an output shaft of the driving cylinder 4 passes through the bottom wall of the detention chamber 2 and is fixedly connected with the end of the first connecting rod 31. The driving cylinder 4 is used for driving the first connecting rod 31 to slide up and down, so that the stability of the up-and-down sliding of the first sealing plate 24 is ensured; and the cylinder structure is simple relatively, only need with its drive shaft stretch into be detained in the room 2 can, avoid taking up more space in the room 2 of detaining.
In order to improve the intelligent automation degree of the system, as shown in fig. 3, the digital sensor 21 and the driving cylinder 4 are in communication connection with a control end 5, and the control end 5 controls the driving cylinder 4 to act according to the detection result of the digital sensor 21 so as to output gas meeting the purity requirement.
As shown in fig. 3, the control terminal 5 includes at least one personal computer 51 and at least one programmable logic controller 52 for storing data by using a stack algorithm, and the programmable logic controller 52 is in communication connection with the personal computer 51 to implement data synchronization, so that a worker can control and operate the programmable logic controller 52 through the personal computer 51. The amount of data stored in the programmable logic controller 52 is small, a stack algorithm is used for temporarily storing the data, the personal computer 51 is stored in a hard disk, the amount of data stored in the hard disk is large, the programmable logic controller 52 is synchronized to the personal computer 51 for storage after receiving new preset information, so that data loss is prevented, meanwhile, the programmable logic controller realizes repeated coverage of the data, namely, if new data comes, the latest data is covered and replaces old data, so that iteration of the data is realized.
As shown in fig. 3, the plc 52 includes a logic control unit 53, a database unit 54 and an alarm unit 55, wherein the database unit 54 and the alarm unit 55 are connected to the logic control unit 53. The digital sensor 21 feeds back the detected real-time index data to the programmable logic controller 52, the logic control unit 53 searches for corresponding target index data from the database unit 54 according to the feedback information of the digital sensor 21 and sends the target index data to the logic control unit 53 for comparison and judgment, and finally, the driving cylinder 4 is controlled to act according to the judgment result.
The working principle is as follows:
before the vacuum pump 16 operates, the valve 14 is closed, gas to be purified is introduced into the gas container 1 through the gas nozzle 15, wherein organic combustible gas is dissolved in oil, common gas enters the detention chamber 3 through the side outlet 13, the gas is detected through the digital sensor, and when the detection result judges that the gas meets the emission requirement, the discharged gas is discharged into the atmosphere; when the detection result judges that the emission requirement is not met, the gas is discharged into the gas nozzle 15 and continuously flows into the container 1 to absorb the organic combustible gas in the gas.
When organism gas begins to be separated out from oil, the vacuum pump 16 operates, the air pressure of the oil in the container 1 is reduced, the liquid level of the oil rises and contacts the liquid level detector 6, at the moment, the side outlet 13 is filled with liquid, after the operation for a period of time, the valve 14 is opened, and the organic combustible gas enters the detention chamber 2 through the air passage interface 17. Firstly, carrying out data determination on the purity of the gas by a digital sensor 21, if the purity of the gas does not reach the standard, driving a first connecting rod 31 to slide by a driving cylinder 4, driving a second connecting rod 32 to move along with the first connecting rod under the action of two wedge-shaped blocks 33 in the inclined surfaces, realizing that when a first sealing plate 24 slides upwards, a second sealing plate 25 can slide towards the direction far away from a circulation port 20, at the moment, the first sealing plate 24 seals a collection port 22, the second sealing plate 25 opens the circulation port 20, and the gas can be conducted into a container 1 by an air outlet nozzle 15 to be purified repeatedly; if up to standard, by driving the first shrouding 24 of actuating cylinder 4 drive and sliding down when opening circulation mouth 20, second shrouding 25 can be simultaneously towards being close to circulation mouth 20 direction and slide, and at this moment, second shrouding 25 blocks up circulation mouth 20 and first shrouding 24 opens collection mouth 22, and gas is collected in the receiving flask by collection mouth 22.
When the detected gas purity of the detention chamber 2 does not reach the standard and is repeatedly purified, the vacuum pump 16 stops working, the air pressure in the container 1 is reduced, the liquid level of the oil liquid is reduced, the mixed gas enters the detention chamber 3 through the side outlet 13, and the gas in the detention chamber 3 is circulated to the container 1 again for repeated purification; when the oil liquid in the container 1 does not enter the gas, the vacuum pump 16 is operated to circulate in sequence until the purity of the organic combustible gas in the detention chamber 2 is detected to meet the requirement, and the gas is collected in the collecting bottle through the collecting port 22.
The present invention is only explained for the purpose of explanation and not limited to the present invention, and those skilled in the art can make modifications to the present embodiment as necessary without inventive contribution after reading the present specification, but is protected by the patent laws within the scope of the claims of the present invention.
Claims (10)
1. A physical extraction and enrichment system for coal bed methane is characterized by comprising:
the container comprises a container (1), wherein a top end outlet (12) is formed in the upper end of the container (1), a side outlet (13) connected with the container (1) is formed in one side of the top end outlet (12), a gas nozzle (15) is formed in the bottom end of the container (1), and the gas nozzle (15) and the side outlet (13) are arranged on the same side of the container;
the vacuum pump (16) is connected with the top end outlet (12) and is used for extracting gas in the container (1) and reducing the gas pressure in the container (1);
a retention chamber (2) connected to the top outlet (12);
a digital sensor (21) arranged in the retention chamber (2) for detecting the purity of the combustible gas of the organism;
a circulation port (20) provided in the retention chamber (2) and communicating with the gas nozzle (15);
a collection port (22) provided in the retention chamber (2) and communicating with a collector for collecting organic combustible gas;
a blocking device (23) which is arranged in the retention chamber (2) and is used for opening the collection port (22) or the circulation port (20) of the retention chamber (2) so as to collect or return the organic combustible gas into the container;
and the control end is connected with the digital sensor (21) and the plugging device (23), and controls the action of the plugging device (23) according to the feedback of the digital sensor (21).
2. A physical extraction and enrichment system for coal bed methane as claimed in claim 1, characterized in that the blocking device (23) comprises a first closing plate (24) for blocking the collection port (22), a second closing plate (25) for blocking the circulation port (20), and an adjusting member for controlling the sliding of the first closing plate (24) and the second closing plate (25).
3. A physical extraction and enrichment system for coal bed methane as claimed in claim 2, characterized in that the circulation port (20) and the collection port (22) are vertically arranged on the side wall of the retention chamber, the sliding directions of the first closing plate (24) and the second closing plate (25) are perpendicular to each other, and the adjusting piece adjusts the sliding of the first closing plate (24) and the second closing plate (25) to alternatively block the collection port (22) and the circulation port (20).
4. A physical extraction and enrichment system for coal bed methane as claimed in claim 3, characterized in that the adjusting member comprises a first connecting rod (31) vertically arranged on the first closing plate (24), and a second connecting rod (32) arranged on the second closing plate (25), the first connecting rod (31) and the second connecting rod (32) are perpendicular to each other, and the ends of the first connecting rod and the second connecting rod close to one side are respectively provided with a wedge block (33) which is matched with each other.
5. A physical extraction and enrichment system for coal bed methane according to claim 4, characterized in that the adjusting piece further comprises a tension spring (34), one end of the tension spring (34) is abutted against one side of the second closing plate (25) far away from the second connecting rod (32), and the other end is abutted against the side wall of the retention chamber (2).
6. A physical extraction and enrichment system for coal bed methane according to claim 4 or 5, characterized in that a driving cylinder (4) is arranged on the retention chamber (2), and an output shaft of the driving cylinder (4) extends into the retention chamber (2) to be fixedly connected with the first connecting rod (31) so as to drive the first connecting rod (31) to close or open the collection port (22).
7. A physical extraction and enrichment system for coal bed methane according to claim 5, characterized in that the digital sensor (21) and the driving cylinder (4) are both communicatively connected with a control terminal (5) for controlling the action of the driving cylinder (4) according to the detection result of the digital sensor (21).
8. The physical extraction and enrichment system for coal bed methane as recited in any one of claims 1-5 and 7, characterized in that the control terminal (5) comprises at least one personal computer (51) and at least one programmable logic controller (52) for data storage by using a stack algorithm, and data synchronization is performed between the personal computer (51) and the programmable logic controller (52).
9. The physical extraction and enrichment system for coal bed methane according to any one of claims 1-5 and 7, characterized in that filter screens (11) are arranged in the container (1), the filter screens (11) are uniformly distributed along the height direction of the container (1), and the pore diameters of the filter screens (11) are gradually decreased from bottom to top.
10. The physical extraction and enrichment system for coal bed methane according to claim 1, characterized in that: and a liquid level detector (6) is arranged in the side outlet (13).
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