CN111648745A - System for raising carbon dioxide concentration by extracting gas from mine with carbon dioxide outburst - Google Patents
System for raising carbon dioxide concentration by extracting gas from mine with carbon dioxide outburst Download PDFInfo
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- CN111648745A CN111648745A CN202010437079.XA CN202010437079A CN111648745A CN 111648745 A CN111648745 A CN 111648745A CN 202010437079 A CN202010437079 A CN 202010437079A CN 111648745 A CN111648745 A CN 111648745A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 55
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 55
- 238000002485 combustion reaction Methods 0.000 claims abstract description 55
- 239000003245 coal Substances 0.000 claims abstract description 47
- 238000011084 recovery Methods 0.000 claims abstract description 21
- 238000010248 power generation Methods 0.000 claims abstract description 10
- 239000010883 coal ash Substances 0.000 claims abstract 2
- 238000001514 detection method Methods 0.000 claims description 41
- 238000000605 extraction Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 19
- 238000005553 drilling Methods 0.000 claims description 17
- 229920000742 Cotton Polymers 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 214
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 54
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 239000010881 fly ash Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 239000005431 greenhouse gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Abstract
The system for promoting the concentration of carbon dioxide by enabling carbon dioxide to protrude out of mine extracted gas comprises a combustion furnace, an extracted gas supply pipeline and a power generation system, wherein a coal ash collector is arranged at the bottom of a combustion chamber of the combustion furnace, a coal input port and an extracted gas inlet are formed in the lower side part of the combustion furnace, a tail gas discharge port is formed in the upper side part of the combustion furnace, the tail gas discharge port is connected with a gas recovery cylinder, a gas-gas heat exchanger is arranged in the gas recovery cylinder, an outlet of the extracted gas supply pipeline is connected with an inlet of the gas-gas heat exchanger, an outlet of the gas-gas heat exchanger is connected with the extracted gas inlet through a gas. On the premise of ensuring the heat productivity, the invention can fully oxidize oxygen and methane in the mixed gas, and the final products are heat, nitrogen and carbon dioxide, thereby having high energy utilization rate, convenient operation, energy saving, environmental protection and good effect.
Description
Technical Field
The invention belongs to the technical field of outburst prevention of carbon dioxide outburst mines, and particularly relates to a system for improving the concentration of carbon dioxide in extracted gas of a carbon dioxide outburst mine.
Background
The source of carbon dioxide in the carbon dioxide outburst mine is mainly related to the igneous matters, namely, a large amount of carbon dioxide is generated by invasion of deep rock pulp and is transported to a coal bed to form displacement and replacement effects on methane in the coal, so that the phenomenon that carbon dioxide and methane coexist in the carbon dioxide outburst coal bed is caused. Meanwhile, the adsorption capacity of the coal to the carbon dioxide is greater than that of the methane, so that the extraction work of the carbon dioxide in the outburst mine is more difficult, but the outburst strength of the coal and the carbon dioxide is greater than that of the coal and the methane. Due to the reasons, the outburst prevention working mode of the carbon dioxide outburst mine is more severe, the technology of combining the protective layer mining and pressure relief and permeability increase with the conventional drilling is often used in combination in the carbon dioxide outburst mine, and meanwhile, the mine with the conditions also develops the ground coal seam gas mining technology to control underground carbon dioxide and methane. The extraction amount is increased rapidly due to the progress of related technologies and the investment of capital, and the extraction gas contains mixed gas of carbon dioxide, methane, nitrogen, oxygen and the like, and particularly, the extraction gas is difficult to utilize due to the existence of a large amount of inert gas such as carbon dioxide and the like.
The addition of the inert gas leads to the lifting of the lower limit and the reduction of the upper limit of the combustion interval of the methane, and meanwhile, a large amount of air is mixed in the underground extraction process, so that the direct combustion or the direct emission of the atmosphere is not practical. The oxidation of low-concentration methane needs to keep the temperature above 750 ℃, and also causes great trouble for the utilization of low-concentration carbon dioxide and methane.
Disclosure of Invention
The system is scientific in principle and simple in structure, can fully utilize methane in the extracted gas of the carbon dioxide outburst mine, generates power after the methane is combusted, improves the concentration of the carbon dioxide in the mixed gas, can utilize combustion waste gas and waste heat, is convenient to operate, saves energy, protects environment and has obvious effect.
In order to solve the technical problems, the invention adopts the following technical scheme: the system for promoting the concentration of carbon dioxide by enabling carbon dioxide to protrude out of mine extracted gas comprises a combustion furnace, an extracted gas supply pipeline and a power generation system, wherein a fly ash collector is arranged at the bottom of a combustion chamber of the combustion furnace, a coal input port and an extracted gas inlet are formed in the lower side part of the combustion furnace, a tail gas discharge port is formed in the upper side part of the combustion furnace, the tail gas discharge port is connected with a gas recovery cylinder, a gas-gas heat exchanger is arranged in the gas recovery cylinder, an outlet of the extracted gas supply pipeline is connected with an inlet of the gas-gas heat exchanger, an outlet of the gas-gas heat exchanger is connected with the extracted gas inlet through an air inlet pipe, a gas separator is connected with an outlet of the gas recovery cylinder, the power generation system comprises a power generator and a.
The extracted gas supply pipeline comprises a gas mixer, an underground drilling extracted gas supply pipe and an underground upper corner opening extracted gas supply pipe, an outlet of the underground drilling extracted gas supply pipe and an outlet of the underground upper corner opening extracted gas supply pipe are both connected with an inlet of the gas mixer, and an outlet of the gas mixer is connected with an inlet of the gas-gas heat exchanger.
The intelligent coal conveying system comprises a computer, a first intelligent flow control valve, a first gas component detection sensor, a second intelligent flow control valve, a second gas component detection sensor, a third gas component detection sensor, an intelligent hot water quantity control valve, an intelligent coal conveying quantity control valve and a temperature sensor;
the system comprises a first intelligent flow control valve and a first gas composition detection sensor, wherein the first intelligent flow control valve and the first gas composition detection sensor are arranged on an underground drilling gas extraction gas supply pipe, the second intelligent flow control valve and the second gas composition detection sensor are arranged on an underground upper corner opening gas extraction gas supply pipe, a third gas composition detection sensor is arranged in a gas recovery cylinder and close to a tail gas discharge port, an intelligent hot water amount control valve is arranged on a power generation water pipe, an intelligent coal conveying amount control valve is arranged on a coal input port, and a temperature sensor is arranged in a combustion chamber;
the computer is respectively connected with the first intelligent flow control valve, the first gas component detection sensor, the second intelligent flow control valve, the second gas component detection sensor, the third gas component detection sensor, the intelligent hot water quantity control valve, the intelligent coal conveying quantity control valve and the temperature sensor through data lines.
The outside of burning furnace and the outside of gas recovery section of thick bamboo all are equipped with the cotton insulating layer of heat preservation.
By adopting the technical scheme, the main gas source in the invention is gas extracted from a coal mine underground or ground coal bed gas well, wherein the underground gas extracted gas is mainly divided into two parts, one part is gas extracted from a bottom plate extraction roadway or a bedding drilling hole, the gas is introduced into an underground drilling hole to extract a gas supply pipe, the extraction drilling hole is generally sealed in a two-plugging one-injecting mode, so that the gas extraction concentration is relatively high and is generally 30-50%, and the concentration ratio of carbon dioxide to methane in the gas is similar to that of carbon dioxide to methane in the coal bed, and is generally 5: 1-3: 1. And secondly, gas is extracted from an upper corner opening and is introduced into an underground upper corner opening to extract a gas supply pipe, and the extraction mode mainly prevents the gas at the upper corner from exceeding the limit, so that the extraction amount is large, the gas concentration is relatively low and is generally within 1%, and the rest part is air. The method for treating and utilizing the gas extracted from the ground coal-bed gas well as a new gas treatment and resource utilization method is gradually popularized in various coal industry groups in recent years, the concentration of the extracted gas is higher and is generally more than 95%, and the extracted gas in a carbon dioxide outburst mine is composed of carbon dioxide and methane, and the proportion of the extracted gas is similar to the occurrence proportion of the gas in the coal bed.
The method comprises the steps of extracting gas from an underground drill hole and extracting gas from an upper corner opening of the underground drill hole, accurately testing concentration and component comparison through a gas component detection sensor, accurately controlling flow rates respectively input by the gas component detection sensor through a central computer, mixing in a gas mixer to ensure uniformity of gas components, introducing the mixed gas into a gas-gas heat exchanger, preheating tail gas after combustion in a combustion furnace in a gas recovery cylinder, entering a combustion chamber to perform combustion reaction with coal, heating the gas-water heat exchanger, supplying heat energy to a generator through steam generated by high-temperature water in the gas-water heat exchanger, generating power by the generator, and collecting fly ash generated after combustion of the coal and the gas in the combustion chamber of the combustion furnace through a fly ash collector. The third gas component detection sensor arranged in the gas recovery cylinder and close to the tail gas outlet accurately measures gas components in the tail gas, and methane and oxygen are enabled to react completely in the combustion chamber on the basis of ensuring the combustion heat productivity. The tail gas generated finally is carbon dioxide and nitrogen, and the high-concentration carbon dioxide gas is obtained through simple separation of the gas separator, so that the tail gas can be reused, the emission of greenhouse gases is reduced, and the method is efficient and environment-friendly.
Under the prerequisite of guaranteeing the generator normal operating, the computer accessible intelligence coal conveying volume control valve regulation and control advances the coal volume of coal mouth, detects the composition of different source gases through first gas composition detection sensor and second gas composition detection sensor to through the gas of first intelligent flow control valve and the different concentrations of second intelligent flow control valve ratio, the ratio result of coal and mist is verified through third gas composition detection sensor.
The gas composition detection sensor can detect the concentration of methane, carbon dioxide, nitrogen and oxygen under the high temperature resistant condition, and 3-6 groups of related sensors can be arranged to ensure the accuracy of detection results, and the flow of gas at the inlet of the underground drilling gas extraction gas supply pipe and the underground upper corner opening gas extraction gas supply pipe can be accurately determined through computer calculation.
The source of the mixed gas is two parts, wherein one part is underground gas extraction gas, the content of carbon dioxide and methane in the gas is high, the oxygen concentration is relatively low, in order to ensure that coal in a combustion chamber is fully combusted so as to provide sufficient energy, a part of gas with high oxygen content is required to be supplemented, the part of gas is controlled by a second intelligent flow control valve, and the part of gas can be extracted from an underground upper corner opening (the total concentration of the gas and the carbon dioxide is generally within 4 percent) or can be directly extracted from air.
The method is characterized in that a heat insulation cotton layer is additionally arranged outside the combustion furnace, and the temperature inside the combustion chamber is monitored to be more than 900 ℃ through a temperature sensor, so that the gas in the mixed gas can be fully oxidized.
Preheat the mist, through spiral helicine gas heat exchanger through burning waste gas, on the basis to calorific value make full use of, promote the mist temperature, ensure that the methane in the combustion chamber can fully oxidize.
In conclusion, the invention has the following beneficial effects:
according to the invention, the extracted gas of the carbon dioxide outburst mine is combined with the coal combustion in the combustion chamber, so that oxygen and methane in the mixed gas can be fully oxidized on the premise of ensuring the heat productivity, and the final products are heat, nitrogen and carbon dioxide, so that the energy utilization rate is high, the operation is convenient, the energy is saved, the environment is protected, and the effect is good. The method mainly has the following advantages:
1. by adopting the device combining the underground extracted gas and the combustion chamber, the methane in the extracted gas can be oxidized on the premise of ensuring the complete combustion of coal, the discharge amount of pollutants is reduced, and the combusted waste gas can be simply separated and utilized.
2. The computer is combined with the intelligent flow control valve, the intelligent coal conveying flow control valve and the gas component detection sensor, so that the proportion of the coal feeding amount and the underground extracted gas can be accurately controlled according to the requirement, and the oxygen and the methane are ensured to completely participate in the reaction.
3. Waste heat of waste gas after combustion carries out waste heat on the mixed gas, so that energy waste is avoided, the oxidation speed of methane is accelerated, the combustion efficiency is improved, and the energy-saving and environment-friendly effects are achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
As shown in figure 1, the system for improving the concentration of carbon dioxide in extracted gas of a carbon dioxide outburst mine comprises a combustion furnace 1, an extracted gas air supply pipeline and a power generation system, wherein a fly ash collector 3 is arranged at the bottom of a combustion chamber 2 of the combustion furnace 1, a coal input port 4 and an extracted gas inlet 5 are arranged at the lower side part of the combustion furnace 1, a tail gas discharge port 6 is arranged at the upper side part of the combustion furnace 1, the tail gas discharge port 6 is connected with a gas recovery cylinder 7, a gas-gas heat exchanger 8 is arranged in the gas recovery cylinder 7, an outlet of the extracted gas air supply pipeline is connected with an inlet of the gas-gas heat exchanger 8, an outlet of the gas-gas heat exchanger 8 is connected with the extracted gas inlet 5 through an air inlet pipe, an outlet of the gas recovery cylinder 7 is connected with a gas separator 9, the power generation system, the gas-water heat exchanger 11 is connected with the generator 10 through a power generation water pipe 12.
The extracted gas supply pipeline comprises a gas mixer 13, an underground drilling extracted gas supply pipe 14 and an underground upper corner opening extracted gas supply pipe 15, an outlet of the underground drilling extracted gas supply pipe 14 and an outlet of the underground upper corner opening extracted gas supply pipe 15 are both connected with an inlet of the gas mixer 13, and an outlet of the gas mixer 13 is connected with an inlet of the gas-gas heat exchanger 8.
The invention also comprises a control system, the control system comprises a computer 16, a first intelligent flow control valve 17, a first gas composition detection sensor 18, a second intelligent flow control valve 19, a second gas composition detection sensor 20, a third gas composition detection sensor 21, an intelligent hot water amount control valve 22, an intelligent coal conveying amount control valve 23 and a temperature sensor 24;
a first intelligent flow control valve 17 and a first gas composition detection sensor 18 are installed on an underground drilling gas extraction gas supply pipe 14, a second intelligent flow control valve 19 and a second gas composition detection sensor 20 are installed on an underground upper corner opening gas extraction gas supply pipe 15, a third gas composition detection sensor 21 is installed in a gas recovery cylinder 7 and is close to a tail gas discharge port 6, an intelligent hot water amount control valve 22 is arranged on a power generation water pipe 12, an intelligent coal delivery amount control valve 23 is arranged on a coal input port 4, and a temperature sensor 24 is arranged inside a combustion chamber 2;
the computer 16 is connected with a first intelligent flow control valve 17, a first gas component detection sensor 18, a second intelligent flow control valve 19, a second gas component detection sensor 20, a third gas component detection sensor 21, an intelligent hot water amount control valve 22, an intelligent coal conveying amount control valve 23 and a temperature sensor 24 through data lines 25.
The outer part of the combustion furnace 1 and the outer part of the gas recovery cylinder 7 are both provided with heat insulation cotton heat insulation layers.
The main gas source in the invention is gas extracted from a coal mine underground or ground coal-bed gas well, wherein the underground gas extracted gas is mainly divided into two parts, one part is gas extracted from a bottom plate extraction roadway or a bedding drilling hole, and the gas is introduced into an underground drilling hole extraction gas supply pipe 14, the extraction drilling hole is generally sealed in a two-plugging one-injecting mode, so that the gas extraction concentration is relatively high and is generally 30-50%, and the concentration ratio of carbon dioxide to methane in the gas is similar to that of carbon dioxide to methane in the coal bed, and is generally 5: 1-3: 1. And secondly, gas is extracted from an upper corner opening, and is introduced into an underground upper corner opening gas extraction gas supply pipe 15, and the extraction mode mainly aims at preventing the gas at the upper corner from exceeding the limit, so that the extraction amount is large, the gas concentration is relatively low and is generally within 1%, and the rest is air. The method for treating and utilizing the gas extracted from the ground coal-bed gas well as a new gas treatment and resource utilization method is gradually popularized in various coal industry groups in recent years, the concentration of the extracted gas is higher and is generally more than 95%, and the extracted gas in a carbon dioxide outburst mine is composed of carbon dioxide and methane, and the proportion of the extracted gas is similar to the occurrence proportion of the gas in the coal bed.
The method comprises the steps of extracting gas from an underground drill hole and extracting gas from an upper corner opening of the underground drill hole, accurately testing concentration and component comparison through a gas component detection sensor, accurately controlling flow rates respectively input by the gas component detection sensor through a central computer 16, mixing in a gas mixer 13 to ensure uniformity of gas components, introducing the mixed gas into a gas-gas heat exchanger 8, preheating tail gas after combustion in a combustion furnace 1 in a gas recovery cylinder 7, enabling the tail gas to enter a combustion chamber 2 to perform combustion reaction with coal, heating the gas-water heat exchanger 11, supplying heat energy to a generator 10 through steam generated by high-temperature water in the gas-water heat exchanger 11, generating power by the generator 10, and collecting fly ash generated after combustion of the coal and the gas in the combustion chamber 2 of the combustion furnace 1 through a fly ash collector 3. The third gas component detection sensor 21 provided in the gas recovery cylinder 7 and adjacent to the exhaust gas discharge port 6 accurately measures the gas components in the exhaust gas, and completely reacts methane and oxygen in the combustion chamber 2 on the basis of ensuring the combustion calorific value. The finally generated tail gas is carbon dioxide and nitrogen, and the high-concentration carbon dioxide gas is obtained through simple separation of the gas separator 9, so that the tail gas can be reused, the emission of greenhouse gas is reduced, and the method is efficient and environment-friendly.
The structures of the devices and the sensors in the invention are the existing mature technologies, and detailed description is omitted.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (4)
1. System that carbon dioxide outburst mine gas extraction promotes carbon dioxide concentration, its characterized in that: the coal ash collector is arranged at the bottom of a combustion chamber of the combustion furnace, a coal input port and an extracted gas inlet are arranged at the lower side of the combustion furnace, a tail gas discharge port is formed in the upper side of the combustion furnace, the tail gas discharge port is connected with a gas recovery cylinder, a gas-gas heat exchanger is arranged in the gas recovery cylinder, an outlet of the extracted gas supply pipeline is connected with an inlet of the gas-gas heat exchanger, an outlet of the gas-gas heat exchanger is connected with the extracted gas inlet through a gas inlet pipe, a gas separator is connected with an outlet of the gas recovery cylinder, the power generation system comprises a power generator and a gas-water heat exchanger, the gas-water heat exchanger is arranged at the upper part of the combustion chamber, and the gas.
2. The system for increasing the concentration of carbon dioxide in extracted gas of the carbon dioxide outburst mine according to claim 1, which is characterized in that: the extracted gas supply pipeline comprises a gas mixer, an underground drilling extracted gas supply pipe and an underground upper corner opening extracted gas supply pipe, an outlet of the underground drilling extracted gas supply pipe and an outlet of the underground upper corner opening extracted gas supply pipe are both connected with an inlet of the gas mixer, and an outlet of the gas mixer is connected with an inlet of the gas-gas heat exchanger.
3. The system for increasing the concentration of carbon dioxide in extracted gas of the carbon dioxide outburst mine according to claim 2, which is characterized in that: the intelligent coal conveying system comprises a computer, a first intelligent flow control valve, a first gas component detection sensor, a second intelligent flow control valve, a second gas component detection sensor, a third gas component detection sensor, an intelligent hot water quantity control valve, an intelligent coal conveying quantity control valve and a temperature sensor;
the system comprises a first intelligent flow control valve and a first gas composition detection sensor, wherein the first intelligent flow control valve and the first gas composition detection sensor are arranged on an underground drilling gas extraction gas supply pipe, the second intelligent flow control valve and the second gas composition detection sensor are arranged on an underground upper corner opening gas extraction gas supply pipe, a third gas composition detection sensor is arranged in a gas recovery cylinder and close to a tail gas discharge port, an intelligent hot water amount control valve is arranged on a power generation water pipe, an intelligent coal conveying amount control valve is arranged on a coal input port, and a temperature sensor is arranged in a combustion chamber;
the computer is respectively connected with the first intelligent flow control valve, the first gas component detection sensor, the second intelligent flow control valve, the second gas component detection sensor, the third gas component detection sensor, the intelligent hot water quantity control valve, the intelligent coal conveying quantity control valve and the temperature sensor through data lines.
4. The system for increasing the concentration of carbon dioxide by extracting gas from a mine by carbon dioxide extraction according to any one of claims 1 to 3, wherein: the outside of burning furnace and the outside of gas recovery section of thick bamboo all are equipped with the cotton insulating layer of heat preservation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010437079.XA CN111648745A (en) | 2020-05-21 | 2020-05-21 | System for raising carbon dioxide concentration by extracting gas from mine with carbon dioxide outburst |
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| CN202010437079.XA CN111648745A (en) | 2020-05-21 | 2020-05-21 | System for raising carbon dioxide concentration by extracting gas from mine with carbon dioxide outburst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2618076A (en) * | 2022-04-25 | 2023-11-01 | Zelp Ltd | Methane oxidation device |
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Application publication date: 20200911 |