CN114778792A - Coal bed gas biological yield increase experimental system - Google Patents
Coal bed gas biological yield increase experimental system Download PDFInfo
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- CN114778792A CN114778792A CN202210720427.3A CN202210720427A CN114778792A CN 114778792 A CN114778792 A CN 114778792A CN 202210720427 A CN202210720427 A CN 202210720427A CN 114778792 A CN114778792 A CN 114778792A
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- 239000003245 coal Substances 0.000 title claims abstract description 90
- 238000006243 chemical reaction Methods 0.000 claims abstract description 138
- 239000007788 liquid Substances 0.000 claims abstract description 88
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 238000002474 experimental method Methods 0.000 claims abstract description 39
- 239000000376 reactant Substances 0.000 claims abstract description 20
- 230000001965 increasing effect Effects 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 73
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 69
- 239000012530 fluid Substances 0.000 claims description 30
- 238000002360 preparation method Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 239000001963 growth medium Substances 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 13
- 239000000047 product Substances 0.000 claims description 11
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- 239000012263 liquid product Substances 0.000 claims description 9
- 239000012265 solid product Substances 0.000 claims description 9
- 230000000638 stimulation Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
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- 238000012546 transfer Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
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- 150000001450 anions Chemical class 0.000 claims description 3
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
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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
- E21B43/006—Production of coal-bed methane
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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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention discloses a coal bed gas biological yield increasing experimental system which comprises a coal bed gas reaction device, wherein the coal bed gas reaction device comprises a reaction cavity; the reaction condition parameter adjusting device is used for adjusting the reaction condition parameters of the reaction cavity; the reactant supply device is used for conveying the coal sample and the biological enrichment liquid to the reaction cavity; the detection device is used for detecting the components and the characteristic information of the products in the reaction cavity; and the control device is connected with the reaction condition parameter adjusting device, the reactant supply device and the detection device and is used for controlling the reaction condition parameter adjusting device to adjust the reaction condition parameters, controlling the coal sample amount and the biological enriched liquid amount which are conveyed to the reaction cavity by the reactant supply device and obtaining the detection result of the detection device. The uncertainty caused by the error of the manual experiment is fundamentally avoided, each link of the experiment is kept to be executed in a standardized way, the intelligent informatization biological yield increase experiment device is built by combining software and hardware, the experiment method is perfected, and the intelligent operation is realized.
Description
Technical Field
The invention relates to the technical field of biological production increase of coal bed methane, in particular to a biological production increase experimental system for coal bed methane.
Background
Under the large background of 'double carbon', the coal bed gas is used as a high-quality energy with high heat value, high cleanliness, small pollution and wide application range, and can provide great guarantee for energy supply in China. However, the stable yield of the coal-bed gas well is seriously influenced by the conditions of low single-well yield, low recovery ratio caused by permeability and the like. Researches find that the yield increasing effect of conventional means such as hydraulic fracturing on the coal bed gas well is extremely limited, and other effective yield increasing modes are actively researched. The biological yield increase (the microorganism accelerates the degradation of coal to produce methane) has great market prospect due to the characteristics of small reaction pollution, wide application range, remarkable effect and the like. Most of the existing biological yield increasing technologies are in the laboratory research stage, and the simulation of field conditions in the experimental process and the maximum approaching to the field environment are the premise for realizing the successful landing of the biological yield increasing technologies. At present, simple devices are adopted from small-scale small-particle-size sample experiments to biological yield increasing experiments for gradually amplifying experimental scales, all the steps of the experiments are basically completed manually, and experiment failure caused by unknown reasons is easy to occur in all the experimental links. The complexity of the biological yield increase experiment process, the high standard requirement of experiment operation, the long experiment period and the experiment cost all provide new requirements for the experiment device.
Disclosure of Invention
In view of this, the invention aims to provide a coal bed methane biological yield increasing experimental system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a biological production increase experimental system of coal bed gas, the biological production increase experimental system of coal bed gas includes:
the coal bed gas reaction device comprises a reaction cavity;
the reaction condition parameter adjusting device is used for adjusting the reaction condition parameters of the reaction cavity;
the reactant supply device is used for conveying the coal sample and the biological enrichment liquid to the reaction cavity;
the detection device is used for detecting the components and the characteristic information of the products in the reaction cavity;
the control device is used for controlling the reaction condition parameter adjusting device to adjust the reaction condition parameters, controlling the coal sample amount and the biological enriched liquid amount conveyed to the reaction cavity by the reactant supply device, and acquiring the detection result of the detection device.
In some embodiments of the present invention, the reaction condition parameter adjusting means comprises:
a temperature adjusting part for adjusting a reaction temperature in the reaction chamber;
a pressure adjusting part for adjusting a reaction pressure in the reaction chamber.
In some embodiments of the present invention, the temperature adjustment part includes a heat transfer fluid supply part, a heating jacket disposed outside the coal bed methane reaction device, a fluid driving part, and a heating part configured to heat the heat transfer fluid in the heat transfer fluid supply part, a heat transfer fluid cavity is formed between the heating jacket and the coal bed methane reaction device, and the fluid driving part is configured to drive the heat transfer fluid to circularly flow between the heat transfer fluid supply part and the heat transfer fluid cavity.
In some embodiments of the invention, the reactant supply means comprises:
a coal sample supply unit for supplying a coal sample to the reaction chamber, the coal sample including coal powder, coal particles, and/or coal blocks;
a bio-rich liquor supply comprising a fluid transfer pump for pumping the bio-rich liquor into the reaction chamber.
In some embodiments of the invention, the bio-rich liquid supply further comprises a bio-rich liquid preparation device connected to the fluid transfer pump, the bio-rich liquid preparation device being configured to prepare the bio-rich liquid.
In some embodiments of the present invention, the bio-rich liquid preparation apparatus comprises:
the rolling type configuration part comprises a configuration container and a driving device for driving the configuration container to roll, and the configuration container is provided with an air inlet, a first liquid inlet and a second liquid inlet;
a gas supply part connected with the gas inlet for supplying oxygen, air and/or inert gas to the configuration container through the gas inlet;
a culture medium solution supply part which is connected with the first liquid inlet and is used for supplying culture medium solution to the preparation container through the first liquid inlet;
and the mine water bio-rich liquid supply part is connected with the second liquid inlet and is used for supplying the mine water bio-rich liquid to the preparation container through the second liquid inlet.
In some embodiments of the invention, the control device is connected with the bio-concentrated solution preparation device and used for controlling the starting and stopping of the driving device, the gas supply amount of the gas supply part, the culture medium solution supply amount of the culture medium solution supply part and the mine water bio-concentrated solution supply amount of the mine water bio-concentrated solution supply part.
In some embodiments of the invention, the detection device comprises:
a gas detection unit for detecting a gas in a product in the reaction chamber;
the solid-liquid separator is used for carrying out solid-liquid separation on a solid-liquid mixture of the products in the reaction cavity to obtain a liquid product and a solid product;
a liquid detection unit for detecting the liquid product;
and a solid detection unit for detecting the solid product.
In some embodiments of the invention, the gas detection portion is for detecting a composition of a gas;
the liquid detection part is used for detecting anions and cations, ion concentration, pH value and oxide of the liquid product;
the solid detection unit detects a component, a permeability, and a porosity of the solid product.
In some embodiments of the invention, the volume of the reaction chamber of the coal bed gas reaction device is adjustable.
The invention provides a coal bed gas biological yield increasing experimental system which comprises a coal bed gas reaction device, a reaction condition parameter adjusting device, a reactant supply device, a detection device and a control device, wherein the coal bed gas reaction device is used for providing a reaction cavity of a coal bed gas biological yield increasing experiment, the reaction condition parameter adjusting device can adjust reaction condition parameters such as temperature and pressure of the reaction cavity, the reactant supply device can convey a coal sample and a biological enrichment solution into the reaction cavity, the detection device can detect characteristic information such as components and concentration of a product in the reaction cavity, the control device can comprehensively manage, control and adjust the experimental process and experimental parameters of the coal bed gas biological yield increasing experimental system and record the experimental result, thus fundamentally eliminating uncertainty caused by errors of manual experiments, keeping each link of the experiment to be executed in a standardized way, and combining software and hardware to construct an intelligent informatization biological yield increasing experimental device, the experimental method is perfected and is arranged in the device, so that intelligent operation is realized.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a coalbed methane biological stimulation experiment system provided by an embodiment of the invention;
FIG. 2 is a diagram illustrating an architecture of a coalbed methane biological stimulation experiment system provided by an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a coal bed methane reaction device provided by the embodiment of the invention;
FIG. 4 shows an enlarged view at A in FIG. 3;
fig. 5 is a schematic structural diagram of a first annular plate in a coal bed methane reaction device according to an embodiment of the present invention.
In the figure:
10. a coal bed gas reaction device; 11. a reaction chamber; 12. a reaction cylinder; 121. a jack; 13. a partition plate; 14. an end plate; 15. a partition structure; 151. a first annular plate; 1511. a first semi-annular plate; 1512. a first spring plate; 152. a second annular plate; 1521. a second semi-annular plate; 1522. a second elastic sheet; 153. a plugging plate; 16. switching the control valve; 20. a reaction condition parameter adjusting device; 21. a temperature adjusting part; 211. a heat transfer fluid supply portion; 212. heating a jacket; 2121. a heat transfer fluid inlet; 2122. a heat transfer fluid outlet; 213. a fluid driving section; 214. a thermally conductive fluid chamber; 22. a pressure adjusting part; 30. a reactant supply; 31. a coal sample supply unit; 32. a bio-rich liquid supply unit; 321. a fluid delivery pump; 322. a biological enrichment solution preparation device; 3221. a rolling type arrangement part; 3222. a gas supply section; 3223. a medium solution supply unit; 3224. a mine water biological enrichment liquid supply part; 3225. an air inlet; 3226. a first liquid inlet; 3227. a second liquid inlet; 40. a detection device; 41. a gas detection unit; 42. a solid-liquid separator; 43. a liquid detection unit; 44. a solid detection unit; 50. and a control device.
Detailed Description
The present invention is described below based on embodiments, and it will be understood by those of ordinary skill in the art that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including but not limited to".
An exemplary embodiment of the present invention provides a coal bed methane biological production increasing experiment system, as shown in fig. 1, the coal bed methane biological production increasing experiment system includes a coal bed methane reaction device 10, a reaction condition parameter adjusting device 20, a reactant supply device 30, a detection device 40, and a control device 50. The coal bed gas reaction device 10 includes a reaction chamber 11, a reaction condition parameter adjusting device 20 for adjusting reaction condition parameters of the reaction chamber 11, a reactant supply device 30 for conveying a coal sample and a bio-enriched liquid to the reaction chamber 11, a detection device 40 for detecting components and characteristic information of a product in the reaction chamber 11, a control device 50 connected to the reaction condition parameter adjusting device 20, the reactant supply device 30 and the detection device 40, and the control device 50 for controlling the reaction condition parameter adjusting device 20 to adjust the reaction condition parameters, controlling the amount of the coal sample and the bio-enriched liquid conveyed to the reaction chamber 11 by the reactant supply device 30, and obtaining a detection result of the detection device 40.
In the coal bed gas biological yield increase experimental system provided by the invention, a coal bed gas reaction device 10 is used for providing a reaction cavity 11 of the coal bed gas biological yield increase experiment, a reaction condition parameter adjusting device 20 can adjust reaction condition parameters such as temperature and pressure of the reaction cavity 11, a reactant supply device 30 can convey a coal sample and a biological enriched liquid into the reaction cavity 11, a detection device 40 can detect characteristic information such as components and concentration of a product in the reaction cavity 11, a control device 50 can carry out overall management and control adjustment on an experimental process and experimental parameters of the coal bed gas biological yield increase experimental system and record an experimental result, thus, uncertainty caused by artificial experimental errors is fundamentally eliminated, each experimental link is kept to be executed in a standardized mode, an intelligent information biological yield increase experimental device is built by combining software and hardware, an experimental method is perfected and is built in the device, intelligent operation is realized, for example, one-click intelligent operation can be realized.
In one embodiment, as shown in fig. 1, the reaction condition parameter adjusting device 20 includes a temperature adjusting portion 21 and a pressure adjusting portion 22, where the temperature adjusting portion 21 is used to adjust the reaction temperature in the reaction chamber 11, so as to simulate the formation temperature and achieve temperature adjustment in the range of 0 ℃ to 50 ℃, the temperature adjusting portion 21 is connected to the control device 50, and specific temperature parameters may be set at the control device 50 in advance. For example, as shown in fig. 1 and fig. 3, the temperature adjustment part 21 includes a heat transfer fluid supply part 211, a heating jacket 212 disposed outside the coal bed methane reaction device 10, a fluid driving part 213, and a heating part for heating the heat transfer fluid in the heat transfer fluid supply part 211, a heat transfer fluid cavity 214 is formed between the heating jacket 212 and the coal bed methane reaction device 10, the fluid driving part 213 is used for driving the heat transfer fluid to circularly flow between the heat transfer fluid supply part 211 and the heat transfer fluid cavity 214, and the fluid driving part 213 is, for example, a conveying pump. The control device 50 can adjust the heating power of the heating portion to adjust the temperature of the heat transfer fluid. The pressure adjusting part 22 is used for adjusting the reaction pressure in the reaction chamber 11 to simulate the formation pressure, and the pressure adjusting part 22 is connected with the control device 50, and specific pressure parameters can be set at the control device 50 in advance. Illustratively, the pressure regulating portion 22 is a controllable pressurizing device.
In this embodiment, through temperature regulation portion 21 simulation formation temperature to through pressure regulation portion 22 simulation formation pressure, greatly optimized the experimental environment of coal bed methane biological production increase experiment, in order to guarantee the accuracy of experimental result.
With continued reference to fig. 1, the reactant supply device 30 includes a coal sample supply part 31 and a bio-rich liquid supply part 32, wherein the coal sample supply part 31 is configured to deliver a coal sample to the reaction chamber 11, and the coal sample includes coal powder, coal particles and/or coal blocks, such as small coal blocks or cracked coal blocks. The coal sample supply unit 31 includes, for example, a conveyor belt, and conveys the coal sample to the reaction chamber 11 through the conveyor belt.
The bio-rich liquid supply part 32 comprises a fluid delivery pump 321, wherein the fluid delivery pump 321 is used for pumping the bio-rich liquid into the reaction chamber 11, and the flow rate of the fluid delivery pump 321 is controllable, so that the control device 50 is convenient to control the adding amount of the bio-rich liquid.
In a preferred embodiment, as shown in fig. 1, the bio-rich liquid supply part 32 further comprises a bio-rich liquid preparation device 322 connected with the fluid delivery pump 321, wherein the bio-rich liquid preparation device 322 is used for preparing the bio-rich liquid, so that the automatic preparation of the bio-rich liquid is realized, the experimental process is further optimized, and the accuracy of the experimental result is improved.
In one embodiment, the apparatus 322 for preparing bio-concentrated solution comprises a rolling type arrangement portion 3221, a gas supply portion 3222, a culture medium solution supply portion 3223 and a mine water bio-concentrated solution supply portion 3224, wherein the rolling type arrangement portion 3221 comprises a configuration container and a driving device for driving the configuration container to roll, and the configuration container is provided with an air inlet 3225, a first liquid inlet 3226 and a second liquid inlet 3227. The gas supply portion 3222 is connected to the gas inlet 3225, and is used for supplying oxygen, air and/or inert gas to the configuration container through the gas inlet 3225. The gas supply portion 3222 is, for example, a gas cylinder. Illustratively, when the experimental conditions require anaerobic environment, an inert gas such as helium or nitrogen may be introduced into the configuration container through the gas supply portion 3222, when the experimental conditions require micro-oxygen-containing conditions, oxygen may be filled in an amount of 10% of the volume of the configuration container, and the rest of helium may be filled in the mixture, and when the experimental conditions require air, air may be filled in the configuration container.
A medium solution supply section 3223 is connected to the first loading port 3226 and is configured to supply a medium solution to the preparation vessel via the first loading port 3226, and the medium solution supply section 3223 is, for example, a medium solution bottle. The mine water bio-rich liquid supply portion 3224 is connected to the second liquid inlet 3227, and is configured to supply the mine water bio-rich liquid to the configuration container through the second liquid inlet 3227.
After specific gas, culture medium solution and mine water bio-enriched solution are introduced into the preparation container, the driving device drives the preparation container to roll, so that the culture medium solution and the mine water bio-enriched solution in the preparation container are fully mixed in a specific gas environment, for example, the driving device drives the preparation container to roll for 5 minutes. In other embodiments, if the experiment does not need to add the culture medium, after the specific gas and the mine water organism enriched liquid are introduced into the configuration container, the driving device drives the configuration container to roll, so that the mine water organism enriched liquid in the configuration container is fully mixed with the gas, for example, the driving device drives the configuration container to roll for 5 minutes.
The control device 50 is connected with the biological enrichment liquid preparation device 322 and used for controlling the starting and stopping of the driving device, the gas supply quantity of the gas supply part, the culture medium solution supply quantity of the culture medium solution supply part and the mine water biological enrichment liquid supply quantity of the mine water biological enrichment liquid supply part, the gas supply quantity, the culture medium solution supply quantity and the mine water biological enrichment liquid supply quantity can be preset in the control device 50, and in the preparation process, the control device 50 can accurately control the supply quantities, so that the automation degree is further improved on one hand, and the accuracy of experimental data can be further ensured on the other hand.
In an exemplary embodiment, as shown in fig. 1, the detecting device 40 includes a gas detecting portion 41, a solid-liquid separator 42, a liquid detecting portion 43 and a solid detecting portion 44, wherein the gas detecting portion 41 is used for detecting the gas in the product in the reaction chamber 11, and the gas detecting portion 41 is used for detecting the gas component, for example, O is realized by gas chromatography2、N2、CH4、H2、H2S、CO2And detecting gases such as CO. The control device 50 may control the biological coal bed methane production experiment system based on the detection result of the gas detection unit 41, for example, when CH is contained in the gas component detected by the gas detection unit 414When the content does not increase the experimental result any more for 5 consecutive days, the control device 50 issues an experimental end instruction.
The solid-liquid separator 42 is used for performing solid-liquid separation on a solid-liquid mixture of the product in the reaction chamber 11 to obtain a liquid product and a solid product, and exemplarily, the solid-liquid separator 42 separates solid and liquid under high-speed rotation, the separated liquid enters the liquid detection unit 43, the separated solid enters the solid detection unit 44, and a part of the separated solid may enter the biological detector. The liquid detection unit 43 is used for detecting the liquid product, and exemplarily, the liquid detection unit 43 is used for detecting anions, cations, pH, and oxides of the liquid product. The solid detection unit 44 is configured to detect the solid product, and exemplarily, the solid detection unit 44 is configured to detect a component, a permeability, and a porosity of the solid product.
The overall architecture of the experimental system for biological stimulation of coal bed methane provided in this embodiment is described below with reference to fig. 2. The control device 50 is configured to set experiment conditions, manage and control the experiment process, and output results, specifically, the setting of the experiment conditions includes setting parameters such as atmosphere, temperature, pressure, and sample volume, the managing and control includes managing and maintaining other devices, and the outputting of the experiment process and the results includes sorting feedback results of the devices and outputting results. The bio-rich solution preparation device 322 is used to simulate different atmosphere conditions, specifically to mix different atmospheres according to settings into the device, and the bio-rich solution preparation device 322 is also used to prepare a reaction solution, specifically to uniformly mix a culture medium and a bio-rich solution according to settings. The fluid transfer pump 321 in the reactant supply device 30 transfers all the gas and liquid to the biological yield increasing device for coal bed methane, and the coal sample supply part 31 adds coal samples with different particle sizes according to the setting. The reaction condition parameter adjusting device 20 can perform temperature control and pressure control, wherein the temperature of the heat conduction device can be adjusted between 0 ℃ and 50 ℃, the pressure control simulates formation pressure, the coal bed gas reaction device 10 is used for providing a reaction cavity 11 for reaction, and the experiment is ended when the methane content is not increased any more for 5 consecutive days. The detection device 40 can detect gas, liquid, and solid, wherein the gas is detected by detecting gas components and concentration, the detection result is fed back to the control device 50, the liquid is detected by extracting 10ml of sample for solid-liquid separation, the liquid components and concentration are detected, and the detection result is fed back to the control device 50, the solid is detected by extracting 10ml of sample for solid-liquid separation, the solid components and concentration are detected, and the detection result is fed back to the control device 50.
Further preferably, the volume of the reaction chamber 11 of the coal bed methane reaction device 10 is adjustable, so as to provide reaction spaces with different experimental scales for biological production increase, for example, the volume of the reaction chamber 11 can be adjusted to 100mL, 5L, 50L, 100L, etc. Illustratively, as shown in fig. 3 and 4, the coal bed gas reaction device 10 includes a reaction cylinder 12 with an axis extending in a horizontal direction, a partition plate 13 and a driving mechanism for driving the partition plate 13 to move along the axis of the reaction cylinder 12 are arranged in the reaction cylinder 12, an edge of the partition plate 13 is in sealing contact with an inner wall of the reaction cylinder 12, and the driving mechanism is connected with a control device 50, so that the control device 50 controls the driving mechanism to drive the partition plate 13 to move to adjust the volume of the reaction chamber 11. The driving mechanism may be, for example, a linear motor, an electric linear guide, or the like. Further, an end plate 14 is provided at one end of the reaction cylinder 12, the reaction chamber 11 is formed between the end plate 14 and the partition plate 13, the reaction raw material can be provided into the reaction chamber 11 through an opening on the end plate 14, and the partition plate 13 is driven by the driving mechanism to move in a direction close to the end plate 14 or in a direction away from the end plate 14, so as to change the volume of the reaction chamber 11.
Further, in the embodiment where the heating jacket 212 is disposed outside the coal bed methane reaction device 10, in order to ensure that the heat-conducting fluid flows only in the region corresponding to the reaction chamber 11, it is preferable that a separation structure 15 is disposed between the heating jacket 212 and the reaction cylinder 12, the separation structure 15 separates the heat-conducting fluid chamber 214 into a plurality of heat-conducting fluid sub-chambers, and an on-off control valve 16 is disposed on the separation structure 15, and the on-off control valve 16 controls the conduction and the cut-off of the heat-conducting fluid sub-chambers. A heat transfer fluid inlet 2121 and a heat transfer fluid outlet 2122 are provided on the heating jacket 212 adjacent the end plate 14 to ensure that heat transfer fluid can be introduced into the heat transfer fluid chamber 214 and removed from the heat transfer fluid chamber 214. The on-off control valve 16 is connected to the control device 50, so that the control device 50 controls the on-off of the on-off control valve 16 while controlling the driving mechanism to drive the partition plate 13 to move, so that the sub-chamber of the heat transfer fluid corresponding to the reaction chamber 11 is circulated with the heat transfer fluid.
In an embodiment, the separation structure 15 includes a plurality of separation assemblies arranged at intervals along the reaction cylinder 12, each separation assembly includes two first semi-annular plates 1511 and two second semi-annular plates 1521, as shown in fig. 5, the two first semi-annular plates 1511 are butted to form a first annular plate 151, the two second semi-annular plates 1521 are butted to form a second annular plate 152, the first annular plate 151 and the second annular plate 152 are arranged at intervals, the on-off control valves 16 are arranged in a plurality along the circumferential direction of the first annular plate 151, each on-off control valve 16 penetrates through the first annular plate 151 and the second annular plate 152, and wires of the on-off control valve 16 are led out of the heating jacket 212 through a space between the first annular plate 151 and the second annular plate 152. The radial inner side of the first annular plate 151 is provided with a plurality of first elastic pieces 1512, the plurality of first elastic pieces 1512 are uniformly distributed along the circumferential direction of the first annular plate 151, the radial inner side of the second annular plate 152 is provided with a plurality of second elastic pieces 1522, the plurality of second elastic pieces 1522 are arranged in a one-to-one correspondence manner with the plurality of first elastic pieces 1512, the first elastic pieces 1512 and the second elastic pieces 1522 opposite to the first elastic pieces 1512 form a limiting structure, the wall of the reaction cylinder 12 is provided with a plurality of jack groups, the jack groups and the separation assemblies are arranged in a one-to-one correspondence manner, each jack group comprises a plurality of jacks 121, the jacks 121 and the limiting structures are arranged in a one-to-one correspondence manner, the limiting structure is inserted into the reaction cylinder 12 through the jacks 121, the separation plate 13 can overcome the elastic force of the first elastic pieces 1512 or the second elastic pieces 2 to be clamped into the limiting structure, and can overcome the elastic force of the second elastic pieces 1522 or the first elastic pieces 1512 to be separated from the limiting structure. Therefore, each limit structure corresponds to the volume of one reaction cavity 11, the movement position of the partition plate 13 can be determined according to the stress of the driving mechanism or the partition plate 13, and the volume of the reaction cavity 11 can be adjusted. In addition, the insertion holes 121 and the limiting structures can be matched to realize the installation and positioning of the separating components.
Further, in order to avoid leakage of the reaction cylinder 12, the first elastic piece 1512 and the second elastic piece 1522 are provided with the blocking plate 153 at a position corresponding to the insertion hole 121, and the blocking plate 153 is matched with the first elastic piece 1512 and the second elastic piece 1522 to block the insertion hole 121, so that leakage of the reaction cylinder 12 is effectively prevented.
In the coal bed gas biological yield increase experimental system provided by the invention, the coal bed gas biological yield increase experimental system is greatly optimized from the condition of simulating the temperature and the pressure of the stratum, the uncertainty caused by the error of the manual experiment is fundamentally avoided, each link of the experiment is kept to be executed in a standardized way, the manual error is eliminated, an intelligent informatization biological yield increase experimental device is constructed by combining software and hardware, the experimental method is perfected, the real-time detection of the experimental process is ensured, the experimental device is arranged in the experimental device, the intelligent operation is realized, and the authenticity of the experimental result is ensured.
Those skilled in the art will readily appreciate that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a biological output increase experimental system of coal bed gas, its characterized in that, the biological output increase experimental system of coal bed gas includes:
the coal bed gas reaction device comprises a reaction cavity;
the reaction condition parameter adjusting device is used for adjusting the reaction condition parameters of the reaction cavity;
the reactant supply device is used for conveying the coal sample and the biological enrichment liquid to the reaction cavity;
the detection device is used for detecting the components and the characteristic information of the products in the reaction cavity;
and the control device is connected with the reaction condition parameter adjusting device, the reactant supply device and the detection device and is used for controlling the reaction condition parameter adjusting device to adjust reaction condition parameters, controlling the coal sample amount and the biological enriched liquid amount conveyed to the reaction cavity by the reactant supply device and acquiring the detection result of the detection device.
2. The coalbed methane biological stimulation experiment system of claim 1, wherein the reaction condition parameter adjusting device comprises:
a temperature adjusting part for adjusting a reaction temperature in the reaction chamber;
a pressure adjusting part for adjusting a reaction pressure in the reaction chamber.
3. The coalbed methane biological stimulation experiment system according to claim 2, wherein the temperature regulating part comprises a heat-conducting fluid supply part, a heating jacket arranged outside the coalbed methane reaction device, a fluid driving part and a heating part for heating the heat-conducting fluid in the heat-conducting fluid supply part, a heat-conducting fluid cavity is formed between the heating jacket and the coalbed methane reaction device, and the fluid driving part is used for driving the heat-conducting fluid to circularly flow between the heat-conducting fluid supply part and the heat-conducting fluid cavity.
4. The coal bed methane biological stimulation experiment system according to claim 1, wherein the reactant supply device comprises:
a coal sample supply unit for supplying a coal sample to the reaction chamber, the coal sample including coal powder, coal particles, and/or coal blocks;
a bio-rich liquor supply comprising a fluid transfer pump for pumping bio-rich liquor into the reaction chamber.
5. The coalbed methane biological stimulation experiment system of claim 4, wherein the bio-rich liquid supply part further comprises a bio-rich liquid preparation device connected with the fluid delivery pump, and the bio-rich liquid preparation device is used for preparing the bio-rich liquid.
6. The experimental system for biological yield increase of coalbed methane according to claim 5, wherein the biological enrichment solution preparation device comprises:
the rolling type configuration part comprises a configuration container and a driving device for driving the configuration container to roll, and the configuration container is provided with an air inlet, a first liquid inlet and a second liquid inlet;
a gas supply part connected with the gas inlet for supplying oxygen, air and/or inert gas to the configuration container through the gas inlet;
a culture medium solution supply part which is connected with the first liquid inlet and is used for supplying culture medium solution to the preparation container through the first liquid inlet;
and the mine water bio-enrichment liquid supply part is connected with the second liquid inlet and is used for supplying the mine water bio-enrichment liquid to the preparation container through the second liquid inlet.
7. The coal bed methane biological yield increasing experimental system according to claim 6, wherein the control device is connected with the biological enrichment solution preparation device and is used for controlling starting and stopping of the driving device, gas supply quantity of the gas supply part, culture medium solution supply quantity of the culture medium solution supply part and mine water biological enrichment solution supply quantity of the mine water biological enrichment solution supply part.
8. The biological coal bed methane stimulation experiment system according to any one of claims 1 to 7, wherein the detection device comprises:
a gas detection unit for detecting a gas in a product in the reaction chamber;
the solid-liquid separator is used for carrying out solid-liquid separation on a solid-liquid mixture of the products in the reaction cavity to obtain a liquid product and a solid product;
a liquid detection unit for detecting the liquid product;
and a solid detection unit for detecting the solid product.
9. The biological yield increasing experimental system for the coal bed methane according to claim 8, wherein the gas detection part is used for detecting the components of the gas;
the liquid detection part is used for detecting anions and cations, ion concentration, pH value and oxide of the liquid product;
the solid detection unit detects a component, a permeability, and a porosity of the solid product.
10. The biological yield increasing experimental system for the coal bed methane according to any one of claims 1 to 7, wherein the volume of the reaction cavity of the coal bed methane reaction device is adjustable.
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