CN212805670U - Low-concentration and ultra-low-concentration gas double-oxidation cogeneration system - Google Patents
Low-concentration and ultra-low-concentration gas double-oxidation cogeneration system Download PDFInfo
- Publication number
- CN212805670U CN212805670U CN202020606738.3U CN202020606738U CN212805670U CN 212805670 U CN212805670 U CN 212805670U CN 202020606738 U CN202020606738 U CN 202020606738U CN 212805670 U CN212805670 U CN 212805670U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- oxidation
- concentration
- low
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 76
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000007789 gas Substances 0.000 claims abstract description 76
- 230000003647 oxidation Effects 0.000 claims abstract description 69
- 238000005338 heat storage Methods 0.000 claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003546 flue gas Substances 0.000 claims abstract description 12
- 230000009977 dual effect Effects 0.000 claims abstract description 11
- 238000009825 accumulation Methods 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract description 29
- 239000003245 coal Substances 0.000 abstract description 18
- 239000002918 waste heat Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000005065 mining Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Landscapes
- Air Supply (AREA)
Abstract
The utility model belongs to the technical field of the colliery, a low concentration, ultra-low concentration gas double oxidation cogeneration system is disclosed. The low-concentration and ultra-low-concentration gas double-oxidation cogeneration system comprises a first pipeline, a second pipeline, a third pipeline, a chimney and a heat storage oxidation box, wherein a first mixer and a second mixer are fixedly mounted on the first pipeline, and a first mixing fan is mounted on the outer surface of the first mixer. This through low concentration coal bed gas heat accumulation oxidation utilization technique will take out gas and ventilation air or air mixing to about 1.2% of methane concentration, the mixing gas lets in hot countercurrent flow heat accumulation oxidation device and is heated the oxidation immediately, exhaust high temperature flue gas carries out waste heat high efficiency through supporting corresponding waste heat utilization system and utilizes, the switching valves makes the operation of the reciprocating switch of ultralow dense gas flow direction periodicity, carry out the dual oxidation, the effectual improvement is utilized the ultralow dense gas that main concentration is less than 9%, the reasonable gas resource that has utilized.
Description
Technical Field
The utility model relates to a technical field in colliery specifically is low concentration, ultra-low concentration gas double oxidation cogeneration system.
Background
China is a large coal consumption country, a large amount of gas is often associated with the gas simultaneously in the coal mining process, the gas is flammable and explosive gas which is formed in the coal geological evolution process and takes methane as a main combustible component, the gas contains a large amount of methane, the gas is an important greenhouse gas source, the greenhouse effect of 1kg of methane is equal to 21kg of carbon dioxide calculated according to 100a, the main components of the associated gas in the coal mining process are gas, extracted gas and ventilation gas, and the method comprises the following steps: before coal mining, gas is extracted by punching holes in an unexplored coal bed, the mining method and components are similar to natural gas, the concentration of methane is up to more than 70%, and the concentration is relatively stable; the gas drainage is to perform concentrated drainage on gas flowing into a coal seam in a goaf of a coal mine, the methane concentration range is wide, the fluctuation is large, and the methane concentration can be changed from 1% to 70% -80%; ventilation gas is exhaust gas which is exhausted from the ground after fresh air flow is supplied to an underground working face (roadway) or a tunneling head, is commonly called ventilation air, and is also called wind exhaust gas because partial gas passes through a coal face and is exhausted from the ground along with the fresh air flow, and the ventilation gas is specified in the coal mine safety regulation of China: the concentration of methane in the ventilation gas is not higher than 0.75%, and actually, in order to ensure the production safety of mines, the concentration of each coal mine is generally controlled within 0.3%.
At present, pure methane discharged into the atmosphere through ventilation gas (ventilation air methane) in China every year is up to 100-150 hundred million Nm3, which accounts for 70% of the methane emission amount of the ventilation gas of coal mines in the world, and is equivalent to 1140-1700 ten thousand tons of standard coal, most of the pure methane is not utilized extracted gas (the main concentration of the gas is lower than 9% of ultra-low concentration gas), meanwhile, along with the increase of the coal mining years, the original middle-high concentration and low concentration gas with the concentration higher than 9% can also be reduced year by year, so that the quantity of the gas with the concentration lower than 9% is more and more, the utilization rate of the ventilation gas with the low concentration and the ultra-low concentration is reduced, and the reasonable utilization of resources is not facilitated.
Disclosure of Invention
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a low concentration, ultra-low concentration gas double oxidation cogeneration system possesses low concentration, ultra-low concentration gas high-usage, the advantage such as wind concentration is up to standard of joining in marriage, has solved the lower problem of utilization ratio of low concentration, ultra-low concentration gas.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the low-concentration and ultra-low-concentration gas double-oxidation cogeneration system comprises a first pipeline, a second pipeline, a third pipeline, a chimney and a heat-storage oxidation box, wherein a first mixer and a second mixer are fixedly installed on the first pipeline, a first mixing fan is installed on the outer surface of the first mixer, a blowing port of the first mixing fan is communicated with the first mixer, a methane concentration sensor is fixedly installed on the first pipeline and positioned between the first mixer and the second mixer, two first connecting pipes are installed at one end of the first pipeline, a first inlet switching valve is fixedly installed on one first connecting pipe, a second inlet switching valve is fixedly installed on the other first connecting pipe, a first heat-storage ceramic bed is installed in the heat-storage oxidation box, and a second heat-storage ceramic bed is installed on one side of the first heat-storage ceramic bed, the first heat-storage ceramic bed and the second heat-storage ceramic bed are arranged in the heat-storage oxidation box in an isolation manner, an oxidation cavity is arranged in the heat-storage oxidation box, the top of the oxidation cavity is communicated with a second pipeline, a turbo generator unit is fixedly arranged on the second pipeline, one end of the second pipeline far away from the oxidation cavity is fixedly provided with a boiler draught fan, a main draught fan is fixedly arranged on the third pipeline, the third pipeline is communicated with an air inlet of a chimney, one end of the third pipeline far away from the chimney is provided with two second connecting pipes, one of the second connecting pipes is fixedly provided with a first outlet switching valve, the other end of the second connecting pipe is fixedly provided with a second outlet switching valve, a secondary mixing pipeline is arranged on the second pipeline, a flue gas valve and a second mixing fan are fixedly arranged on the secondary mixing pipeline, one end of the secondary mixing pipeline is communicated with the second pipeline, and the other end of the secondary mixing pipeline is communicated with a second mixer.
Preferably, the first pipeline is communicated with the air inlet of the thermal storage oxidation box through two first connecting pipes respectively.
Preferably, the third pipeline is communicated with the air outlet of the thermal storage oxidation box through two second connecting pipes respectively.
Preferably, the interface of the secondary mixing pipeline and the second pipeline is positioned on a pipeline between the steam turbine generator unit and the boiler induced draft fan.
Preferably, the detection range of the methane concentration sensor is set to be 0-1.2%.
Preferably, the internal temperature range of the heat storage oxidation box is set to be 900-1000 ℃.
Preferably, the second conduit is in communication with a third conduit.
(III) advantageous effects
By adopting the technical scheme, the beneficial effects of the utility model are that:
1. this through low concentration coal bed gas heat accumulation oxidation utilization technique will take out gas and ventilation air or air mixing to about 1.2% of methane concentration, the mixing gas lets in hot countercurrent flow heat accumulation oxidation device and is heated the oxidation immediately, exhaust high temperature flue gas carries out waste heat high efficiency through supporting corresponding waste heat utilization system and utilizes, the switching valves makes the operation of the reciprocating switch of ultralow dense gas flow direction periodicity, carry out the dual oxidation, the effectual improvement is less than 9% ultralow concentration gas utilization to main concentration, the reasonable gas resource that has utilized, compared with the prior art, low concentration has been solved, the lower problem of the utilization ratio of ultralow concentration gas.
2. This through the mixing regulation control of drainage gas and air, drainage gas and ventilation air adopt the secondary air distribution, the secondary is joined in mixture, guarantees to supply with the methane concentration of admitting air of gas oxidation device < 1.2%, has guaranteed to carry out the high-efficient waste heat utilization operation of dual oxidation to low concentration, the super low concentration gas smoothly, and the practicality is strong, compares with prior art, has solved the methane concentration of admitting air of supplying with gas oxidation device and probably is greater than 1.2%.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic diagram of the internal structure of the thermal storage oxidation box of the present invention.
In the figure: the system comprises a first pipeline 1, a second pipeline 2, a third pipeline 3, a chimney 4, a heat-accumulating oxidation box 5, a secondary mixing pipeline 6, a first mixer 11, a second mixer 12, a first mixing fan 13, a methane concentration sensor 14, a first connecting pipe 15, a first inlet switching valve 16, a second inlet switching valve 17, a turbo generator unit 21, a boiler induced draft fan 22, a main induced draft fan 31, a second connecting pipe 32, a first outlet switching valve 33, a second outlet switching valve 34, a first heat-accumulating ceramic bed 51, a second heat-accumulating ceramic bed 52, an oxidation cavity 53, a flue gas valve 61, a flue gas valve 62 and a second mixing fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a dual oxidation cogeneration system for low-concentration and ultra-low-concentration gas, comprising a first pipe 1, a second pipe 2, a third pipe 3, a chimney 4 and a heat storage oxidation box 5, wherein the first pipe 1 is fixedly provided with a first mixer 11 and a second mixer 12, the outer surface of the first mixer 11 is provided with a first mixing blower 13, the blowing port of the first mixing blower 13 is communicated with the first mixer 11, the first pipe 1 is fixedly provided with a methane concentration sensor 14, the methane concentration sensor 14 is located between the first mixer 11 and the second mixer 12, the low-concentration gas or ventilation air is introduced into the first pipe 1, the low-concentration gas or ventilation air is mixed in the first mixer 11 after being distributed by the first mixing blower 13, the methane concentration sensor 14 located at the outlet of the first mixer 11 detects the methane concentration, if the concentration requirement cannot be met, the air is distributed by a second mixing fan 62 and then mixed in a secondary mixer 12 to ensure that the concentration of the ventilation methane is 1.2 percent, one end of a first pipeline 1 is provided with two first connecting pipes 15, one first connecting pipe 15 is fixedly provided with a first inlet switching valve 16, the other first connecting pipe 15 is fixedly provided with a second inlet switching valve 17, a first heat storage ceramic bed 51 is arranged in a heat storage oxidation box 5, one side of the first heat storage ceramic bed 51 is provided with a second heat storage ceramic bed 52, the first heat storage ceramic bed 51 and the second heat storage ceramic bed 52 are arranged in the heat storage oxidation box 5 in an isolated way, an oxidation cavity 53 is arranged in the heat storage oxidation box 5, a large amount of heat is supplied into the oxidation cavity 53 through an external heat source (electric heating or coal burner heating), a high-temperature environment (900 ℃ -1000 ℃), which is required by gas oxidation is established in the heat storage oxidation box, after the condition of oxidation temperature is met, mixed ventilation gas (the concentration of methane is less than 1.2%) is introduced into an oxidation device for oxidation, methane with extremely low concentration can be completely and instantly oxidized into water and carbon dioxide in a flameless manner under the condition of high temperature, and the reaction formula is as follows: CH4+2O2 is 2H2O + CO2+ Q, wherein Q is heat generated by oxidation reaction, the top of an oxidation cavity 53 is communicated with a second pipeline 2, a turbo generator unit 21 (or a waste heat boiler) is fixedly arranged on the second pipeline 2, one end, far away from the oxidation cavity 53, of the second pipeline 2 is fixedly provided with a boiler induced draft fan 22, high-temperature flue gas generated in a heat storage oxidation box 5 is conveyed to a corresponding waste heat utilization system (the turbo generator unit 21 or the waste heat boiler) through the second pipeline 2 to be efficiently utilized for waste heat, the scale of system treatment capacity can be from tens of thousands of square per hour to hundreds of thousands of square per hour according to the extracted gas quantity and ventilation air volume of a coal mine, a waste heat utilization mode can be configured according to site requirements, hot water heating can be produced by using waste heat, superheated steam can be produced to push a steam turbine to generate electricity, a main induced draft fan 31 is fixedly arranged on a third pipeline 3, the third pipeline 3 is communicated with the air inlet part of the chimney 4, one end of the third pipeline 3 far away from the chimney 4 is provided with two second connecting pipes 32, one second connecting pipe 32 is fixedly provided with a first outlet switching valve 33, the other second connecting pipe 32 is fixedly provided with a second outlet switching valve 34, ventilation gas (ventilation air methane) enters a first heat storage ceramic bed 51 through a first inlet switching valve 16, is preheated by a storage body and enters an oxidation cavity 53 to generate oxidation reaction, low-temperature gas is discharged through the second heat storage ceramic bed 52 and the second outlet switching valve 34, heat generated by the oxidation of the ventilation air methane is stored in the second heat storage ceramic bed 52 and is supplied to the ventilation air methane for preheating during the next reverse circulation to maintain the self-heating balance of the system, redundant heat is discharged from the second pipeline 2 at the top of the heat storage oxidation box 5 in the form of high-temperature flue gas, the second pipeline 2 is provided with a secondary mixing pipeline 6, the secondary mixing pipeline 6 is fixedly provided with a flue gas valve 61 and a second mixing fan 62, one end of the secondary mixing pipeline 6 is communicated with the second pipeline 2, and the other end of the secondary mixing pipeline 6 is communicated with the second mixer 12, so that the requirement that the methane concentration (less than 1.2%) cannot be met is met, and the flue gas is mixed in the secondary mixer 12 after being distributed by the second mixing fan 62.
The first pipeline 1 is communicated with the air inlet of the thermal storage oxidation box 5 through two first connecting pipes 15 respectively, and the arrangement is designed to smoothly introduce the low concentration of qualified concentration in the first pipeline 1 into the thermal storage oxidation box 5.
The third pipeline 3 is communicated with the gas outlet of the thermal storage oxidation box 5 through two second connecting pipes 32, and the arrangement is that the low-temperature gas generated in the thermal storage oxidation box 5 is smoothly conveyed to the chimney 4 through the third pipeline 3.
The interface of the secondary mixing pipeline 6 and the second pipeline 2 is positioned on the pipeline between the turbo generator unit 21 and the boiler induced draft fan 22, so that the unqualified methane concentration is conveyed to the inside of the second mixer 12 again smoothly, and the unqualified methane concentration cannot be conveyed into the chimney 4 by the boiler induced draft fan 22.
The detection range of the methane concentration sensor 14 is set to be 0-1.2%, and the detection range is set to be qualified methane concentration.
The internal temperature of the thermal oxidizer 5 is set to 900-1000 c, which provides a precondition for ensuring that methane can be oxidized with oxygen.
The second duct 2 communicates with the third duct 3, and is provided to convey the used gas to the inside of the stack 4.
The working principle is as follows: low-concentration gas or ventilation air is conveyed to the inside of a first pipeline 1, the gas or the ventilation air is distributed by a first mixing fan 13 and then mixed in a first mixer 11, the concentration of methane is detected by a methane concentration sensor 14, if the concentration requirement is not met, the gas or the ventilation air is distributed by a second mixing fan 62 and then mixed in a secondary mixer 12 to ensure that the concentration of ventilation methane is 1.2 percent, the ventilation gas (ventilation air) enters a first heat storage ceramic bed 51 through a first inlet switching valve 17, enters an oxidation cavity 53 after being preheated by a storage body to carry out oxidation reaction, low-temperature gas is discharged to a chimney 4 through a second heat storage ceramic bed 52 and a second outlet switching valve 34, the heat generated by the oxidation of the ventilation air is stored in the second heat storage ceramic bed 52 for supplying ventilation air to preheat during the next reverse circulation, the self-heating balance of the system is maintained, the redundant heat is discharged to a second pipeline 2 in the form of high-temperature flue gas, and the high-temperature flue gas is used for heat supply or power generation through a, enters the chimney 4 through the boiler induced draft fan 22 and is discharged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a low concentration, super low concentration gas dual oxidation cogeneration system, includes first pipeline (1), second pipeline (2), third pipeline (3), chimney (4) and heat accumulation oxidation case (5), its characterized in that: the device is characterized in that a first mixer (11) and a second mixer (12) are fixedly mounted on the first pipeline (1), a first mixing fan (13) is mounted on the outer surface of the first mixer (11), an air blowing port of the first mixing fan (13) is communicated with the first mixer (11), a methane concentration sensor (14) is fixedly mounted on the first pipeline (1), the methane concentration sensor (14) is located between the first mixer (11) and the second mixer (12), two first connecting pipes (15) are mounted at one end of the first pipeline (1), a first inlet switching valve (16) is fixedly mounted on one of the first connecting pipes (15), a second inlet switching valve (17) is fixedly mounted on the other first connecting pipe (15), a first ceramic heat storage bed (51) is mounted inside the heat storage oxidation box (5), a second heat storage ceramic bed (52) is installed on one side of the first heat storage ceramic bed (51), the first heat storage ceramic bed (51) and the second heat storage ceramic bed (52) are arranged in the heat storage oxidation box (5) in an isolation mode, an oxidation cavity (53) is arranged inside the heat storage oxidation box (5), the top of the oxidation cavity (53) is communicated with the second pipeline (2), a turbo generator unit (21) is fixedly installed on the second pipeline (2), a boiler induced draft fan (22) is fixedly installed on one end, far away from the oxidation cavity (53), of the second pipeline (2), a main induced draft fan (31) is fixedly installed on the third pipeline (3), the third pipeline (3) is communicated with an air inlet of a chimney (4), two second connecting pipes (32) are installed on one end, far away from the chimney (4), a first outlet switching valve (33) is fixedly installed on one of the second connecting pipes (32), and a second outlet switching valve (34) is fixedly mounted on the second connecting pipe (32), a secondary mixing pipeline (6) is mounted on the second pipeline (2), a flue gas valve (61) and a second mixing fan (62) are fixedly mounted on the secondary mixing pipeline (6), one end of the secondary mixing pipeline (6) is communicated with the second pipeline (2), and the other end of the secondary mixing pipeline (6) is communicated with a second mixer (12).
2. The low-concentration and ultra-low-concentration gas dual oxidation cogeneration system according to claim 1, wherein: the first pipeline (1) is communicated with the air inlet of the heat accumulation oxidation box (5) through two first connecting pipes (15).
3. The low-concentration and ultra-low-concentration gas dual oxidation cogeneration system according to claim 1, wherein: the third pipeline (3) is communicated with the air outlet of the heat storage oxidation box (5) through two second connecting pipes (32).
4. The low-concentration and ultra-low-concentration gas dual oxidation cogeneration system according to claim 1, wherein: and the interface of the secondary mixing pipeline (6) and the second pipeline (2) is positioned on a pipeline between the turbo generator unit (21) and the boiler induced draft fan (22).
5. The low-concentration and ultra-low-concentration gas dual oxidation cogeneration system according to claim 1, wherein: the detection range of the methane concentration sensor (14) is set to be 0-1.2%.
6. The low-concentration and ultra-low-concentration gas dual oxidation cogeneration system according to claim 1, wherein: the internal temperature range of the heat storage oxidation box (5) is set to be 900-1000 ℃.
7. The low-concentration and ultra-low-concentration gas dual oxidation cogeneration system according to claim 1, wherein: the second pipeline (2) is communicated with the third pipeline (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020606738.3U CN212805670U (en) | 2020-04-22 | 2020-04-22 | Low-concentration and ultra-low-concentration gas double-oxidation cogeneration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020606738.3U CN212805670U (en) | 2020-04-22 | 2020-04-22 | Low-concentration and ultra-low-concentration gas double-oxidation cogeneration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212805670U true CN212805670U (en) | 2021-03-26 |
Family
ID=75080927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020606738.3U Expired - Fee Related CN212805670U (en) | 2020-04-22 | 2020-04-22 | Low-concentration and ultra-low-concentration gas double-oxidation cogeneration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212805670U (en) |
-
2020
- 2020-04-22 CN CN202020606738.3U patent/CN212805670U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217763522U (en) | Natural gas ammonia-doped combustion system for coupling green hydrogen to produce ammonia | |
| CN109148919B (en) | Integrated coal gasification fuel cell power generation system and method utilizing gas high-temperature sensible heat | |
| WO2023097943A1 (en) | Nitrogen-free combustion and carbon dioxide capture and utilization process for gas-fired boiler | |
| CN204333127U (en) | Packaged type solid oxide fuel cell power generating system | |
| CN109372601B (en) | Distributed comprehensive energy supply system for recycling ventilation gas | |
| JP2017106705A (en) | Energy saving system for integrated combustion device | |
| CN114151785B (en) | Carbon-based oxygen-enriched combustion and CO of coal-fired boiler 2 Trapping and utilizing process | |
| CN102767404A (en) | System and method of gas turbine for utilizing low-concentration gas | |
| CN204402668U (en) | A kind of circulating wind resource assessment reclaims power generation system | |
| CN112283686B (en) | Hydrogen-burning heat exchanger | |
| CN212805670U (en) | Low-concentration and ultra-low-concentration gas double-oxidation cogeneration system | |
| CN205503282U (en) | Steam recycles formula gas turbine power generation device based on solar energy and waste heat recovery | |
| CN201835858U (en) | Thermal oxidation generating system by adopting low-concentration gas and ventilated gas in coal mine | |
| CN217398453U (en) | Methanol hydrogen production purge gas recycling system | |
| CN102997691A (en) | System and method for generating electricity by using residual heat generated in transformation of coke oven flue waste gas into high-quality waste gas | |
| CN108488893A (en) | Low concentration gas heat source prizes heating plant | |
| CN205784000U (en) | A kind of fiery colliery three wastes thermal energy generating device | |
| CN202852836U (en) | Device capable of fully extinguishing yellow phosphorus electric furnace diffusion torches | |
| CN109059562A (en) | Snakelike tube bank and heat exchange cover waste-heat recovery device | |
| CN113250738A (en) | Low-concentration gas utilization system and use method thereof | |
| CN204395731U (en) | Pit-head power station low cost carbon dioxide capture system | |
| CN203730135U (en) | Power generation device for producer gas combustion gas turbine | |
| CN205480969U (en) | Gaseous oxidation unit's of leading ultra -low concentration methane gas exhaust -heat boiler | |
| CN202791995U (en) | Heat accumulating type oxygen enrichment burning device | |
| CN214944408U (en) | Low-concentration gas utilization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210326 |