CN114294039B - Reactive power carbon dioxide multipath recovery device in coal mine air shaft - Google Patents
Reactive power carbon dioxide multipath recovery device in coal mine air shaft Download PDFInfo
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- CN114294039B CN114294039B CN202111529663.9A CN202111529663A CN114294039B CN 114294039 B CN114294039 B CN 114294039B CN 202111529663 A CN202111529663 A CN 202111529663A CN 114294039 B CN114294039 B CN 114294039B
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 114
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 114
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 239000003245 coal Substances 0.000 title claims description 17
- 239000000428 dust Substances 0.000 claims abstract description 59
- 238000009833 condensation Methods 0.000 claims abstract description 28
- 230000005494 condensation Effects 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000002274 desiccant Substances 0.000 claims description 16
- 239000011229 interlayer Substances 0.000 claims description 14
- 230000002829 reductive effect Effects 0.000 claims description 14
- 239000010410 layer Substances 0.000 claims description 12
- 239000003595 mist Substances 0.000 claims description 10
- 230000036961 partial effect Effects 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 10
- 210000000664 rectum Anatomy 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Gases (AREA)
Abstract
The utility model provides a colliery wind shaft does not have power supply carbon dioxide multichannel recovery unit, including wind shaft, dust remover, air chamber, carbon dioxide condensation mechanism, the lateral wall week side of wind shaft be provided with a plurality of with the adjustable variable speed wind channel of wind shaft intercommunication, the latus rectum in adjustable variable speed wind channel reduces gradually along the air inlet to the gas outlet direction in adjustable variable speed wind channel; the dust remover is connected with the air outlet of the adjustable variable speed air duct, the gas collection chamber is connected with the dust remover, and the carbon dioxide condensing mechanism is connected with the gas collection chamber and is used for condensing the received dried air flow so as to condense carbon dioxide in the air flow into liquid carbon dioxide. The device realizes the preliminary cooling of air current temperature through adjustable variable speed wind channel, loops through the dust remover and the air collecting chamber and cools down, lets in the carbon dioxide condensation mechanism again and condenses in the dry air current after the cubic cooling, has improved the condensation effect of carbon dioxide.
Description
Technical Field
The utility model relates to a colliery relates to technical field, especially relates to a colliery wind shaft is in no power consumption carbon dioxide multi-channel recovery unit.
Background
In the coal mining industry, a large amount of carbon dioxide exists in the air flow of the coal mine air shaft, and the air is directly discharged to the air, so that serious pollution to the environment is caused, the greenhouse effect phenomenon is aggravated, meanwhile, the utilization value of the carbon dioxide is greatly wasted, and the energy is greatly wasted, so that the carbon dioxide in the air flow discharged from the coal mine air shaft is required to be recovered, and the carbon dioxide condensation effect is poor due to the fact that the temperature of the air flow discharged from the coal mine air shaft reaches 30-40 ℃, and the carbon dioxide in the air flow is directly condensed and recovered.
Disclosure of Invention
The present application aims to solve, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of this application provides a colliery air shaft does not have power supply carbon dioxide multichannel recovery unit, the device is through setting up a plurality of adjustable variable speed wind channels on the air shaft lateral wall for the air current dispersion is handled in a plurality of adjustable variable speed wind channels in the air shaft, improves treatment effeciency, and adjustable variable speed wind channel can realize the preliminary cooling of air current temperature simultaneously, then get into the dust remover and cool down once more through the cold air current that lets in the dust remover, the air current after the dust removal is cooled down once more through the cold air current in the air collecting chamber, the dry air current after the cubic cooling lets in the carbon dioxide condensation mechanism again and condenses, the condensation effect of carbon dioxide has been improved, and the cold air current in the carbon dioxide condensation mechanism directly can be used for the condensation in dust remover and the air collecting chamber, realize cyclic utilization of energy, and after partial cold air current lets in the dust remover, again carries out cyclic condensation, realize the abundant condensation recovery of air current.
In order to achieve the above purpose, the application provides a colliery wind-force well does not have power carbon dioxide multichannel recovery unit, includes:
the air shaft is provided with a plurality of adjustable variable speed air channels communicated with the air shaft on the periphery of the side wall of the air shaft, and the drift diameter of the adjustable variable speed air channels is gradually reduced along the direction from the air inlet to the air outlet of the adjustable variable speed air channels so that air flow in the air shaft enters the adjustable variable speed air channels for accelerating condensation;
the dust remover is connected with the air outlet of the adjustable variable speed air duct and is used for removing dust from air flow entering the dust remover;
the air collection chamber is connected with the dust remover and is used for drying the received dust-removed air flow;
the carbon dioxide condensing mechanism is connected with the gas collection chamber and is used for condensing the received dried gas flow so as to condense carbon dioxide in the gas flow into liquid carbon dioxide;
the carbon dioxide collecting box is connected with the carbon dioxide condensing mechanism and is used for receiving condensed liquid carbon dioxide, and the carbon dioxide collecting box is respectively connected with the gas collecting chamber and the dust remover so as to cool the gas collecting chamber and the dust remover by utilizing partial cold air exhausted from the carbon dioxide collecting box.
Further, a mounting hole is formed in the top of the adjustable variable speed air duct, a jack is arranged at the top of the adjustable variable speed air duct, a valve is arranged at the power output end of the jack, and the valve is positioned in the mounting hole, so that the jack is used for controlling the valve to move up and down in the mounting hole to control the air flow through the adjustable variable speed air duct;
the top of the air shaft is provided with an explosion-proof air door.
Further, the carbon dioxide condensing mechanism comprises a cold-hot separator, a cold exchanger is sleeved outside the cold end of the cold-hot separator, and the cold exchanger is used for transferring heat to the cold end so as to cool flowing water in the cold exchanger;
the hot end of the cold-hot separator is sleeved with a heat exchanger, and the heat exchanger is used for reducing the temperature of the hot end and heating running water in the heat exchanger by utilizing the hot end;
the cold end is connected with the carbon dioxide collecting box and is used for collecting the liquid carbon dioxide generated by the cold end and simultaneously enabling cold air blown out of the cold end to flow into the carbon dioxide collecting box.
Further, the cold end of the cold-hot separator comprises a connecting pipe, a first horn pipe and a second horn pipe, wherein the first horn pipe and the second horn pipe are arranged at two ends of the connecting pipe, the large mouth end of the first horn pipe and the large mouth end of the second horn pipe are respectively connected with two ends of the connecting pipe, and the connecting pipe is provided with CO communicated with the connecting pipe 2 Condensate collection pipe, said CO 2 The condensate collecting pipeline is connected with the carbon dioxide collecting box.
Further, the hot end of the cold-hot separator comprises a hot pipeline connected with the small opening end of the second horn pipe, the heat exchanger is sleeved outside the hot pipeline, a plurality of vent holes are formed in the side wall of one end, connected with the second horn pipe, of the hot pipeline, the air inlet direction of each vent hole is arranged along the tangential direction of the hot pipeline, and the vent holes are tapered holes gradually reduced from the outside to the inside of the hot pipeline, so that the dried air flow is led into the hot pipeline through the vent holes.
Further, the second horn tube is externally sleeved with a gas temporary storage chamber, and the vent holes and the cold exchanger are both positioned in the gas temporary storage chamber, so that the dried air flow entering the gas temporary storage chamber is initially cooled and then enters the heat pipeline through the vent holes.
Further, a mist nozzle is arranged in the dust remover, and a water supply pipeline of the mist nozzle is connected with the cold exchanger so as to spray the cooled flowing water in the cold exchanger into the dust remover through the mist nozzle.
Further, a plurality of layers of desiccant interlayers are arranged in the gas collection chamber from top to bottom, so that the dust-removed air flow enters from the bottom of the gas collection chamber and sequentially passes through the plurality of layers of desiccant interlayers to be dried, and then is introduced into the carbon dioxide condensation mechanism from the top of the gas collection chamber;
the middle part of air collecting chamber is provided with the cold air pipe, the cold air pipe from the top down passes the multilayer in proper order the middle part of drier interlayer, the cold air pipe is located the top layer set up to the heliciform in drier interlayer upper portion space.
Further, the air outlet of the adjustable variable speed air duct, the air outlet of the dust remover and the air outlet of the air collection chamber are respectively provided with an explosion-proof waterproof diversion fan, and the explosion-proof waterproof diversion fans are connected with a thermoelectric generator so as to supply power for the explosion-proof waterproof diversion fans by utilizing the thermoelectric generator;
the thermoelectric generator is respectively connected with the carbon dioxide collecting box and the hot end so as to generate power by utilizing the temperature difference between the cold air flow in the carbon dioxide collecting box and the hot air flow discharged by the hot end.
Further, the thermoelectric generator includes:
the cold air chamber comprises a cold air inner pipeline and a cold air outer cavity coated outside the cold air inner pipeline, a first through hole communicated with the cold air outer cavity is formed in one end, far away from a cold air inlet, of the cold air inner pipeline, a second through hole is formed in one end, far away from the first through hole, of the cold air outer cavity, the cold air inlet is connected with the carbon dioxide collecting box, so that cold air flow which is introduced into the cold air inner pipeline through the cold air inlet enters the cold air outer cavity through the first through hole and flows out through the second through hole;
the hot air chamber, the hot air chamber is in including the cladding the outside steam inner chamber of air conditioning outer chamber, the steam inner chamber is kept away from the one end of air conditioning air inlet is provided with the steam air inlet, the outside cladding of steam inner chamber has the steam outer chamber, the steam inner chamber is kept away from steam air inlet one end with the steam outer chamber is linked together, the steam outer chamber is close to steam air inlet one end is provided with the third through-hole, the steam air inlet with the hot junction links to each other, so that the hot junction hot air passes through steam inner chamber one end the steam air inlet lets in the steam inner chamber, then gets into from the steam inner chamber other end the steam outer chamber after pass through the third through-hole flows.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a partial structure of a device for recovering multiple paths of non-reactive carbon dioxide in a coal mine air shaft according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a partial structure of a device for recovering non-reactive carbon dioxide in a coal mine air shaft;
FIG. 3 is a schematic view of an adjustable variable speed air duct structure of the present application;
FIG. 4 is a schematic diagram of the carbon dioxide condensing mechanism of the present application;
FIG. 5 is a partial schematic view of the structure of FIG. 4 of the present application;
FIG. 6 is a partial schematic view of the structure of FIG. 4 of the present application;
FIG. 7 is a schematic view of the structure of the carbon dioxide collection box of the present application;
FIG. 8 is a schematic view of the structure of the plenum of the present application;
FIG. 9 is a cross-sectional view taken along the direction A-A in FIG. 8 of the present application;
fig. 10 is a schematic view of a partial structure of the thermoelectric generator of the present application.
In the figure, 1, a wind well; 2. a carbon dioxide condensing mechanism; 21. a cold-hot separator; 22. a cold exchanger; 23. a heat exchanger; 24. a cold end; 243. CO 2 A condensate collection conduit; 244. a connecting pipe; 245. a first horn; 246. a second flare; 247. a hot side flow regulator; 25. a hot end; 251. a heat pipe; 252. a vent hole; 253. a fixing plate; 26. a gas temporary storage chamber; 3. an adjustable variable speed air duct; 31. a jack; 32. a valve; 4. a plenum chamber; 41. a desiccant spacer layer; 42. a cold air pipe; 43. spiral shape; 44. a fan-shaped unit; 5. a carbon dioxide collection box; 51. a case; 52. a cold air inlet pipe; 53. an air outlet pipe; 54. a dust remover cold air pipe; 55. CO 2 A condensate delivery pipe; 6. a dust remover; 7. an explosion-proof air door; 8. waterproof diversion fan; 9. a thermoelectric generator; 91. a cold air inner pipe; 911. a first through hole; 912. a cold air inlet; 92. cold waterAn outer gas chamber; 93. a hot gas cavity; 931. a hot gas inlet; 94. a hot gas outer chamber; 95. thermoelectric generation piece; 96. an outer cold air duct; 961. a first annular end cap; 962. an end cover plate; 97. a hot gas inner duct; 971. a third annular end cap; 98. an outer hot gas duct; 981. a second annular end cap; 982. and a fourth annular end cap.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all alternatives, modifications, and equivalents as may be included within the spirit and scope of the appended claims.
Fig. 1 is a schematic structural diagram of a device for recovering non-reactive carbon dioxide in a coal mine air shaft according to an embodiment of the present application.
Referring to fig. 1-10, a multi-path recovery device for non-reactive carbon dioxide in a coal mine air shaft comprises an air shaft 1, a carbon dioxide condensation mechanism 2, an air collection chamber 4, a carbon dioxide collection box 5 and a dust remover 6, wherein a plurality of adjustable variable speed air channels 3 communicated with the air shaft 1 are arranged on the periphery of the side wall of the air shaft 1, the drift diameter of each adjustable variable speed air channel 3 is gradually reduced along the direction from an air inlet to an air outlet of each adjustable variable speed air channel 3, so that air flow in the air shaft 1 enters each adjustable variable speed air channel 3 to perform accelerating condensation, specifically, an air outlet is formed in the side wall of the air shaft 1, an adjustable variable speed air channel 3 is arranged at the air outlet, the large opening end of each adjustable variable speed air channel 3 is arranged on the side wall of the air shaft 1, and then the air flow in the air shaft 1 is gradually increased due to the fact that the drift diameter of the air flow in the adjustable variable speed air channels 3 is reduced along the moving direction, and the cooling condensation of the air flow is realized.
It should be noted that, a plurality of adjustable variable speed air channels 3 may be disposed on the periphery of the air shaft 1, that is, four adjustable variable speed air channels 3 may be disposed on the periphery of the air shaft 1 at equal angles, so that the air flow in the air shaft 1 may be discharged through the four adjustable variable speed air channels 3, and the carbon dioxide recovery in the air flow in the air shaft may be accelerated by disposing the plurality of adjustable variable speed air channels 3.
The dust remover 6 is connected with the air outlet of the adjustable variable speed air duct 3 and is used for removing dust from air flow entering the dust remover 6; the gas collection chamber 4 is connected with the dust remover 6 and is used for drying the received dust-removed air flow, the carbon dioxide condensation mechanism 2 is connected with the gas collection chamber 4 and is used for condensing the received dried air flow so as to enable carbon dioxide in the air flow to be condensed into liquid carbon dioxide, and the dust and water vapor content in the air flow processed by the dust remover 6 and the gas collection chamber 4 are reduced, so that the subsequent recovery of the carbon dioxide is not influenced.
In addition, the carbon dioxide collecting box 5 is connected with the carbon dioxide condensing mechanism 2 and is used for receiving condensed liquid carbon dioxide, and the carbon dioxide collecting box 5 is respectively connected with the air collecting chamber 4 and the dust remover 6 so as to cool the air collecting chamber 4 and the dust remover 6 by utilizing partial cold air discharged from the carbon dioxide collecting box 5, so that the air flow is primarily cooled in the air collecting chamber 4 and the dust remover 6, the temperature of the air flow entering the carbon dioxide condensing mechanism 2 is reduced, and the condensing effect of the carbon dioxide is enhanced.
In detail, the temperature of the air flow in the air shaft 1 is generally 30-40 ℃ and contains a large amount of dust, in order to improve the recovery of carbon dioxide in the air flow in the air shaft 1, a plurality of adjustable variable speed air channels 3 are arranged on the side wall of the air shaft 1, so that the air flow in the air shaft 1 is dispersed in the plurality of adjustable variable speed air channels 3 for treatment, the temperature of the air flow is primarily cooled due to acceleration through the structure of the adjustable variable speed air channels 3, and then the air flow enters the dust remover 6 for dedusting, the cooled air flow is cooled again through the cold air flow introduced into the dust remover 6, the air flow after dedusting is cooled again in the air collection chamber 4, the dried air flow after the cooling is condensed in the carbon dioxide condensation mechanism 2 again through the cooling of three times, the condensation effect of the carbon dioxide is improved, the cold air flow in the carbon dioxide condensation mechanism 2 can be directly used for condensation in the dust remover 6 and the air collection chamber 4, the recycling of energy is realized, and part of the cold air flows into the dust remover 6 for circulating condensation again, and the full condensation recovery of the air flow is realized.
In some embodiments, the top of the adjustable variable speed air duct 3 is provided with a mounting hole, the top of the adjustable variable speed air duct 3 is provided with a jack 31, the power output end of the jack 31 is provided with a valve 32, the valve 32 is positioned in the mounting hole, so that the valve 32 is controlled to move up and down in the mounting hole by utilizing the jack 31 to control the air flow through the adjustable variable speed air duct 3, the top of the air shaft 1 is provided with an explosion-proof air door 7, and CO in the air flow discharged by the air shaft 1 is required to be treated 2 When capturing, the explosion-proof air door 7 is in a closed state, the air shaft 1 is ventilated by the adjustable variable speed air duct 3 to carry out CO 2 Capturing and CO can be achieved by controlling the opening and closing of valve 32 2 The captured road number is controlled, when multiple paths are needed to be recovered simultaneously, the valves 32 of the multiple paths of adjustable variable speed air channels 3 can be completely opened, when the air returns to a training exercise or special needs, the valves 32 on the adjustable variable speed air channels 3 are closed, the explosion-proof air door 7 of the air shaft 1 is opened, and the air shaft 1 is ventilated by the opened explosion-proof air door 7.
In some embodiments, the carbon dioxide condensing mechanism 2 includes the cold-hot separator 21, the cold end 24 of the cold-hot separator 21 is externally sleeved with the cold exchanger 22, the cold exchanger 22 is used for transferring heat to the cold end 24, so that flowing water in the cold exchanger 22 is cooled, the hot end 25 of the cold-hot separator is sleeved with the heat exchanger 23, the temperature of the hot end 25 is reduced, and the flowing water in the heat exchanger 23 is heated by the hot end 25, specifically, the cold exchanger 22 is a spiral pipe coiled at the cold end 24, ice formation occurs outside the cold end 24 due to the fact that the temperature of the cold end 24 is lower, frequent ice removal is needed, the heat of water in the spiral pipe is exchanged to the cold end 24 as the cold exchanger 22 by introducing water into the spiral pipe, continuous heat exchange of the cold end 24 can be realized, meanwhile, when the water in the spiral pipe transfers heat to the cold end 24, the water temperature in the spiral pipe is also reduced, the heat exchanger 23 is sleeved outside the hot end 25, heat in the spiral pipe is conducted to the water in the spiral pipe, the temperature of the heat in the spiral pipe is enabled to be reduced, and the air flow in the heat exchanger 23 is enabled to be better, and the temperature of the heat in the spiral pipe is enabled to be transferred to the cold end 23 due to the fact that the temperature is reduced, and the temperature in the heat is better temperature is cooled, and the heat in the heat exchanger 23 is transferred to the heat temperature is cooled.
In addition, the cold end 24 is connected with the carbon dioxide collecting box 5, and is used for collecting liquid carbon dioxide generated by the cold end 24, meanwhile, cold air flow blown out by the cold end 24 is led into the carbon dioxide collecting box 5, so that the carbon dioxide collecting box 5 can be cooled, heat outside the carbon dioxide collecting box 5 is prevented from being transmitted into the carbon dioxide collecting box 5, the liquid carbon dioxide stored in the carbon dioxide collecting box is influenced, and cold air flow entering the carbon dioxide collecting box 5 can be led into the air collecting chamber 4 and the dust remover 6 for cooling.
In some embodiments, the cold end 24 of the cold-hot separator may be constructed in a variety of ways.
As a possible structure, the cold end comprises a connecting pipe 244 and a first horn pipe 245 and a second horn pipe 246 arranged at two ends of the connecting pipe 244, the big mouth end of the first horn pipe 245 and the big mouth end of the second horn pipe 246 are respectively connected with two ends of the connecting pipe 244, and the connecting pipe 244 is provided with CO communicated with the connecting pipe 244 2 Condensate collection conduit 243, CO 2 The condensate collecting pipe 243 is connected with the carbon dioxide collecting box 5, and the second flare 246 gradually increases along with the outflow of the dry air flow, so as to further reduce the temperature of the air flow from the second flare 246, thereby generating more liquid CO 2 The diameter of the first flare 245 gradually decreases as the gas flows out to collect more liquid CO 2 。
In addition, the hot end 25 includes a heat pipe 251 connected to the small end of the second horn 246, the heat exchanger 23 is sleeved outside the heat pipe 251, the circulating water in the spiral pipe of the heat exchanger 23 can be used for heating bath water or heating radiator after heat exchange heating is performed by the hot end 25, a plurality of ventilation holes 252 are opened on the side wall of one end of the heat pipe 251 connected with the second horn 246, a hot end flow regulator 247 is arranged on the other end of the heat pipe 251, and hot end flow is providedThe volume regulator 247 can adjust the opening and closing degree of the hot end outlet according to the requirement, and is used for controlling the refrigerating effect of the cold-hot separator, the air inlet direction of the vent hole is set along the tangential direction of the heat pipe 251, so that the dry air flow entering the heat pipe 251 enters along the tangential direction of the heat pipe 251, a vortex rotating at a high speed is formed at one end of the heat pipe 251, meanwhile, the vent hole 252 is set as a tapered hole gradually decreasing from the outside to the inside of the heat pipe 251, so that the dry air flow is introduced into the heat pipe 251 through the vent hole 252, that is, the vent hole 252 is a tapered hole, and the air inlet end of the tapered hole is a large opening section, so that after the dry air flow enters the vent hole 252, the flow velocity of the dry air flow in the vent hole 252 is gradually increased due to the reduced through diameter of the vent hole 252, and thus the CO is enhanced 2 Condensation effect.
It should be noted in detail that, a fixing plate 253 is fixed on one end face of the heat pipe 251, a through hole is formed in the middle of the fixing plate 253, the small opening end of the second flare 246 is fixed at the through hole, and the inner diameter of the small opening end is the same as the aperture of the through hole, so that a step is naturally formed between the second flare 246 and the heat pipe 251 to prevent the hot air from moving toward the cold end.
In some embodiments, the second flare 246 is externally sleeved with the gas temporary storage chamber 26, the vent 252 and the cold exchanger 22 are both positioned in the gas temporary storage chamber 26, the dry gas flow is introduced into the gas temporary storage chamber 26 for preliminary cooling and then enters the hot pipe 251 through the vent 252, specifically, by arranging the gas temporary storage chamber 26, the dry gas flow firstly enters the gas temporary storage chamber 26, and the gas temporary storage chamber is sleeved outside the cold end, so that the gas entering the gas temporary storage chamber 26 is firstly subjected to preliminary condensation, and then the temperature of the gas flow entering the cold-hot separator is introduced, and the CO is enhanced 2 Condensation effect.
The carbon dioxide collection tank 5 may have various structures.
As a possible structure, the carbon dioxide collecting box 5 comprises a box body 51, a cold air inlet pipe 52 is arranged at the top of the box body 51, the cold air inlet pipe 52 is in a conical structure, a small mouth end of the conical structure is a cold air inlet, and the cold air inlet is connected with the lower mouth end of the first horn pipe 245Through setting into the toper structure, while carbon dioxide collecting box 5's lateral wall upper portion is provided with the outlet duct 53 that is linked together with carbon dioxide collecting box 5, outlet duct 53 slope upwards sets up, and then can prevent the outside loss of liquid carbon dioxide in the carbon dioxide collecting box 5, the cold air current that lets in carbon dioxide collecting box 5 is discharged through outlet duct 53, be provided with the dust remover cold air pipe 54 that is linked together with outlet duct 53 on outlet duct 53 simultaneously, dust remover cold air pipe 54 is connected to dust remover 6, part cold air current lets in dust remover 6 through dust remover cold air pipe 54, cool down the air current in dust remover 6, and can realize the cyclic condensation of part cold air current, outlet duct 53 is connected with air collecting chamber 4 simultaneously, make part cold air current let in air collecting chamber 4, be provided with on the lateral wall of box 51 with CO 2 CO communicated with the condensate collecting duct 243 2 Condensate delivery tube 55.
In some embodiments, a mist nozzle is disposed in the dust remover 6, a water supply pipeline of the mist nozzle is connected with the cold exchanger 22, so that the cooled water flow in the cold exchanger 22 is sprayed into the dust remover 6 through the mist nozzle, the cooled water flow in the cold exchanger 22 is directly sprayed into the dust remover 6 through the mist nozzle after heat exchange is performed on the water flow in the cold exchanger 22 through the cold end 24, dust in the air flow is captured through the atomized water, and the air flow is cooled again.
In some embodiments, a plurality of layers of desiccant spacers 41 are arranged in the air collection chamber 4 from top to bottom, so that the air flow after dust removal enters from the bottom of the air collection chamber 4 and passes through the layers of desiccant spacers 41 in sequence to be dried, and then is led into the carbon dioxide condensing mechanism 2 from the top of the air collection chamber 4, that is, the air collection chamber 4 can be arranged into a cylindrical structure, then a plurality of supporting plates are uniformly distributed on the inner wall of the air collection chamber 4 at the same height, the desiccant spacers 41 are arranged on the plurality of supporting plates, and are supported by the supporting plates, meanwhile, the desiccant spacers 41 can be divided into a plurality of fan-shaped units 44, and each fan-shaped unit 44 is hermetically arranged, so that the air flow after dust removal cannot flow out from between the two fan-shaped units 44, meanwhile, each fan-shaped unit 44 and the side wall of the air collection chamber 4 are hermetically arranged, in order to reduce the temperature of the air flow in the air collection chamber 4, a cold air pipe 42 can be arranged in the middle of the air collection chamber 4, the cold air pipe 42 sequentially penetrates through the middle of the multi-layer desiccant interlayer 41 from top to bottom, the cold air pipe 42 is arranged in the upper space of the topmost desiccant interlayer 41 to be in a spiral shape 43, that is, one end of each fan-shaped unit 44 is provided with an arc-shaped hole, the desiccant interlayer 41 formed by a plurality of fan-shaped units 44 is in an annular structure, the outer circular side wall of the desiccant interlayer 41 in the annular structure is connected with the inner wall of the air collection chamber 4, the inner circular side wall of the desiccant interlayer 41 is in sealing connection with the side wall of the cold air pipe 42, the air flow is prevented from overflowing from the connection, the temperature in the air collection chamber 4 can be reduced through the arrangement of the cold air pipe 42, the replacement of each fan-shaped unit 44 is facilitated through arranging the desiccant interlayer 41 into a plurality of fan-shaped units 44, the cold air pipe 42 is connected with the carbon dioxide collection chamber 5, that is, the cold air pipe 42 is connected with the air outlet pipe 53, the cold air flow in the carbon dioxide collection box 5 can be introduced into the cold air pipe 42 to cool the air collection chamber 4.
In some embodiments, in order to increase the flow rate of the air flow and achieve further cooling of the air flow, an explosion-proof waterproof diversion fan 8 may be disposed at the air outlet of the adjustable variable speed air duct 6, at the air outlet of the dust collector 1, and at the air outlet of the air collection chamber 4, the explosion-proof waterproof diversion fan 8 is connected to the thermoelectric generator 9, so as to utilize the thermoelectric generator 9 to supply power to the explosion-proof waterproof diversion fan 8, and the thermoelectric generator 9 is respectively connected to the carbon dioxide collection chamber 5 and the hot end 25, so as to utilize the temperature difference between the cold air flow in the carbon dioxide collection chamber 5 and the hot air flow discharged from the hot end 25 to generate electricity, that is, the thermoelectric generator 9 is connected to the air outlet 53 of the carbon dioxide collection chamber 5, so as to enable part of the cold air flow to flow into the thermoelectric generator 9, and meanwhile, the hot air flow generated from the hot end 25 also passes through the thermoelectric generator 9, and the explosion-proof waterproof diversion fan 8 is disposed at the air collection chamber 4, so as to compensate for the reduction of the air speed caused by the air flow passing through the multi-layer desiccant layer 41.
The thermoelectric generator 9 capable of achieving thermoelectric generation has various structures.
As a possible mechanism, the thermoelectric generator 9 comprises a cold air chamber and a hot air chamber, the cold air chamber comprises a cold air inner pipe 91 and a cold air outer cavity 92 coated outside the cold air inner pipe 91, a thermoelectric generation piece 95 is laid outside the cold air outer cavity 92, one end of the cold air inner pipe 91, which is far away from a cold air inlet 912 of the cold air inner pipe 91, is provided with a first through hole 911 communicated with the cold air outer cavity 92, one end of the cold air outer cavity 92, which is far away from the first through hole 911, is provided with a second through hole, the cold air inlet 912 is connected with the carbon dioxide collecting box 5, that is, the cold air inlet 912 is connected with an air outlet pipe 53 of the carbon dioxide collecting box 5, so that cold air flowing into the cold air inner pipe 91 through the cold air inlet 912 enters the cold air outer cavity 92 through the first through hole 911 and flows out through the second through hole, the cold air storage space is increased and the cold air flowing time is prolonged by utilizing the pipe 91 and the cold air outer cavity 92 coated outside the cold air inner pipe 91, so as to ensure the relatively constant cold air inside the cold air of the pipe 91, and improve the power generation effect of the thermoelectric generator.
In addition, the hot air chamber includes the cladding in the outside steam inner chamber 93 of air conditioning outer chamber 92, and the one end that air conditioning air inlet 912 was kept away from to steam inner chamber 93 is provided with steam air inlet 931, and the outside cladding of steam inner chamber 93 has steam outer chamber 94, and steam inner chamber 93 keeps away from steam air inlet 931 one end and is linked together with steam outer chamber 94, and steam outer chamber 94 is provided with the third through-hole near steam air inlet 931 one end, and steam air inlet 931 links to each other with hot junction 25 to make the hot junction 25's hot air current let in through the steam air inlet 931 of steam inner chamber 93 one end in steam inner chamber 93, then follow the steam inner chamber 93 other end and get into steam outer chamber 94 after flowing out through the third through-hole. The outer cavity 94 of the hot air, which is coated outside the inner cavity 93 of the hot air, is used for ensuring the constant temperature of the inner cavity 93 of the hot air, preventing the outer wall of the exposed inner cavity 93 of the hot air from exchanging heat with the external environment, reducing the temperature of the hot air inside the inner cavity 93 of the hot air, and further reducing the power generation effect. In detail, the cold air chamber comprises a cold air inner pipe 91 and a cold air outer pipe 96 sleeved outside the cold air inner pipe 91, a first annular end cover 961 is connected between the outer wall of one end of a cold air inlet 912 of the cold air inner pipe 91 and the inner wall of one end of the cold air outer pipe 96, the other end of the cold air inner pipe 91 and the other end of the cold air outer pipe 96 are fixed on an end cover 962, a cold air outer cavity 92 is enclosed between the cold air inner pipe 91, the cold air outer pipe 96, the end cover plate 962 and the first annular end cover 961, thermoelectric generation pieces 95 are laid on the outer wall of the cold air outer pipe 96 and the outer wall of the end cover plate 962, a plurality of first through holes 911 are uniformly distributed on the side wall of the cold air inner pipe 91 close to one end of the end cover plate 962, a plurality of second through holes are opened on the first annular end cover 961, the cold air inlet 912 is connected with an air outlet pipe 53, meanwhile, the hot air chamber comprises a hot air inner pipe 97 and a hot air outer pipe 98 sleeved outside the hot air inner pipe 97, a second annular end cover 981 is connected between the outer wall of one end of a hot air inlet 931 of the hot air inner pipe 97 and the hot air outer pipe 98, the hot air inner pipe 97 is sleeved outside the cold air outer pipe 96, a third annular end cover 971 is connected between the outer wall of the cold air outer pipe 96 and the inner wall of one end of the hot air inner pipe 97 far away from the second annular end cover 981, a hot air inner cavity 93 is formed by encircling among the cold air outer pipe 96, the hot air inner pipe 97 and the third annular end cover 971, a fourth annular end cover 982 is connected between the outer wall of the cold air outer pipe 96 and the inner wall of one end of the hot air outer pipe 98 close to the third annular end cover 971, a hot air outer cavity 94 is formed by encircling among the hot air inner pipe 97, the hot air outer pipe 98, the cold air outer pipe 96, the second annular end cover 981, the third annular end cover 971 and the fourth annular end cover 982, the second annular end cover 981 and the third annular end cover 971 are respectively provided with a plurality of third through holes and fourth through holes 972, the hot air inlet 931 is connected with the hot end 25, and hot air flowing into the hot air cavity 93 through the hot air inlet 931 enters the hot air outer cavity 94 through the fourth through holes 972 and then flows out through the third through holes.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (8)
1. The utility model provides a colliery wind shaft does not have power supply carbon dioxide multichannel recovery unit which characterized in that includes:
the air shaft is provided with a plurality of adjustable variable speed air channels communicated with the air shaft on the periphery of the side wall of the air shaft, and the drift diameter of the adjustable variable speed air channels is gradually reduced along the direction from the air inlet to the air outlet of the adjustable variable speed air channels so that air flow in the air shaft enters the adjustable variable speed air channels for accelerating condensation;
the dust remover is connected with the air outlet of the adjustable variable speed air duct and is used for removing dust from air flow entering the dust remover;
the air collection chamber is connected with the dust remover and is used for drying the received dust-removed air flow;
the carbon dioxide condensing mechanism is connected with the gas collection chamber and is used for condensing the received dried gas flow so as to condense carbon dioxide in the gas flow into liquid carbon dioxide, and the carbon dioxide condensing mechanism is used for condensing the received dried gas flow into liquid carbon dioxideThe cold end of the cold-hot separator is sleeved with a heat exchanger, the heat exchanger is used for transferring heat to the cold end so as to cool flowing water in the cold exchanger, the hot end of the cold-hot separator is sleeved with a heat exchanger, the heat exchanger is used for reducing the temperature of the hot end and heating flowing water in the heat exchanger by utilizing the hot end, the cold end is connected with a carbon dioxide collecting box, and the cold end is used for collecting liquid carbon dioxide generated by the cold end and simultaneously flowing cold air blown out of the cold end into the carbon dioxide collecting box; the carbon dioxide collecting box is connected with the carbon dioxide condensing mechanism and is used for receiving condensed liquid carbon dioxide, the carbon dioxide collecting box is respectively connected with the gas collecting chamber and the dust remover, so that partial cold air exhausted from the carbon dioxide collecting box is utilized to cool the gas collecting chamber and the dust remover, the cold end of the cold-hot separator comprises a connecting pipe and a first horn pipe and a second horn pipe which are arranged at two ends of the connecting pipe, the large mouth end of the first horn pipe and the large mouth end of the second horn pipe are respectively connected with two ends of the connecting pipe, and the connecting pipe is provided with CO communicated with the connecting pipe 2 Condensate collection pipe, said CO 2 The condensate collecting pipeline is connected with the carbon dioxide collecting box.
2. The device for recycling the carbon dioxide without power in the coal mine air shaft according to claim 1, wherein a mounting hole is formed in the top of the adjustable variable speed air duct, a jack is arranged at the top of the adjustable variable speed air duct, a valve is arranged at the power output end of the jack, and the valve is positioned in the mounting hole, so that the jack is used for controlling the valve to move up and down in the mounting hole to control the air flow through the adjustable variable speed air duct;
the top of the air shaft is provided with an explosion-proof air door.
3. The device for recovering carbon dioxide from a coal mine air shaft according to claim 1, wherein the hot end of the cold-hot separator comprises a hot pipeline connected with the small opening end of the second horn pipe, the heat exchanger is sleeved outside the hot pipeline, a plurality of ventilation holes are formed in the side wall of one end of the hot pipeline connected with the second horn pipe, the air inlet direction of the ventilation holes is arranged along the tangential direction of the hot pipeline, and the ventilation holes are tapered holes gradually reduced from the outside to the inside of the hot pipeline so as to enable the dried air flow to flow into the hot pipeline through the ventilation holes.
4. A non-power-consumption carbon dioxide multi-path recovery device in a coal mine air shaft as claimed in claim 3, wherein a gas temporary storage chamber is sleeved outside the second horn pipe, and the vent hole and the cold exchanger are both positioned in the gas temporary storage chamber, so that the dried air flow entering the gas temporary storage chamber is initially cooled and then enters the heat pipe through the vent hole.
5. The multi-path recovery device for non-power-consumption carbon dioxide in a coal mine air shaft according to claim 1, wherein a mist nozzle is arranged in the dust remover, and a water supply pipeline of the mist nozzle is connected with the cold exchanger so as to spray the cooled flowing water in the cold exchanger into the dust remover through the mist nozzle.
6. The multi-channel recovery device for non-power-consumption carbon dioxide in a coal mine air shaft according to claim 1, wherein a plurality of layers of desiccant interlayers are arranged in the air collection chamber from top to bottom, so that the air flow after dust removal enters from the bottom of the air collection chamber and sequentially passes through the plurality of layers of desiccant interlayers to be dried, and then is introduced into the carbon dioxide condensation mechanism from the top of the air collection chamber;
the middle part of air collecting chamber is provided with the cold air pipe, the cold air pipe from the top down passes the multilayer in proper order the middle part of drier interlayer, the cold air pipe is located the top layer set up to the heliciform in drier interlayer upper portion space.
7. The multi-path recovery device for the non-reactive carbon dioxide in the coal mine air shaft according to claim 1, wherein the air outlet of the adjustable variable speed air duct, the air outlet of the dust remover and the air outlet of the air collection chamber are all provided with flameproof waterproof diversion fans, and the flameproof waterproof diversion fans are connected with a thermoelectric generator so as to supply power for the flameproof waterproof diversion fans by utilizing the thermoelectric generator;
the thermoelectric generator is respectively connected with the carbon dioxide collecting box and the hot end so as to generate power by utilizing the temperature difference between the cold air flow in the carbon dioxide collecting box and the hot air flow discharged by the hot end.
8. The apparatus for multiplexed recovery of carbon dioxide without power in a coal mine wind shaft as claimed in claim 7, wherein the thermoelectric generator comprises:
the cold air chamber comprises a cold air inner pipeline and a cold air outer cavity coated outside the cold air inner pipeline, a first through hole communicated with the cold air outer cavity is formed in one end, far away from a cold air inlet, of the cold air inner pipeline, a second through hole is formed in one end, far away from the first through hole, of the cold air outer cavity, the cold air inlet is connected with the carbon dioxide collecting box, so that cold air flow which is introduced into the cold air inner pipeline through the cold air inlet enters the cold air outer cavity through the first through hole and flows out through the second through hole;
the hot air chamber, the hot air chamber is in including the cladding the outside steam inner chamber of air conditioning outer chamber, the steam inner chamber is kept away from the one end of air conditioning air inlet is provided with the steam air inlet, the outside cladding of steam inner chamber has the steam outer chamber, the steam inner chamber is kept away from steam air inlet one end with the steam outer chamber is linked together, the steam outer chamber is close to steam air inlet one end is provided with the third through-hole, the steam air inlet with the hot junction links to each other, so that the hot junction hot air passes through steam inner chamber one end the steam air inlet lets in the steam inner chamber, then gets into from the steam inner chamber other end the steam outer chamber after pass through the third through-hole flows.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111529663.9A CN114294039B (en) | 2021-12-14 | 2021-12-14 | Reactive power carbon dioxide multipath recovery device in coal mine air shaft |
| PCT/CN2022/120247 WO2023109234A1 (en) | 2021-12-14 | 2022-09-21 | Zero-power-consumption multi-path carbon dioxide recovery device in coal mine air shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111529663.9A CN114294039B (en) | 2021-12-14 | 2021-12-14 | Reactive power carbon dioxide multipath recovery device in coal mine air shaft |
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| CN114294039A CN114294039A (en) | 2022-04-08 |
| CN114294039B true CN114294039B (en) | 2023-12-22 |
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| CN202111529663.9A Active CN114294039B (en) | 2021-12-14 | 2021-12-14 | Reactive power carbon dioxide multipath recovery device in coal mine air shaft |
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| WO (1) | WO2023109234A1 (en) |
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| CN114294039B (en) * | 2021-12-14 | 2023-12-22 | 天地科技股份有限公司 | Reactive power carbon dioxide multipath recovery device in coal mine air shaft |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114294039A (en) | 2022-04-08 |
| WO2023109234A1 (en) | 2023-06-22 |
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