CN114294039A - No-power-consumption carbon dioxide multi-path recovery device in coal mine air shaft - Google Patents
No-power-consumption carbon dioxide multi-path recovery device in coal mine air shaft Download PDFInfo
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- CN114294039A CN114294039A CN202111529663.9A CN202111529663A CN114294039A CN 114294039 A CN114294039 A CN 114294039A CN 202111529663 A CN202111529663 A CN 202111529663A CN 114294039 A CN114294039 A CN 114294039A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 233
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 124
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 116
- 238000011084 recovery Methods 0.000 title claims abstract description 25
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 239000000428 dust Substances 0.000 claims abstract description 62
- 238000009833 condensation Methods 0.000 claims abstract description 32
- 230000005494 condensation Effects 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000002274 desiccant Substances 0.000 claims description 20
- 239000011229 interlayer Substances 0.000 claims description 12
- 239000003595 mist Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 description 7
- 238000010248 power generation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- 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
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- 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
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- 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
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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Abstract
The application provides a non-power-consumption carbon dioxide multi-path recovery device in a coal mine air shaft, which comprises the air shaft, a dust remover, an air collection chamber and a carbon dioxide condensation mechanism, wherein a plurality of adjustable speed-changing air channels communicated with the air shaft are arranged on the peripheral side of the side wall of the air shaft, and the drift diameter of each adjustable speed-changing air channel is gradually reduced along the direction from an air inlet to an air outlet of each adjustable speed-changing air channel; the dust remover is connected with an air outlet of the adjustable variable speed air duct, the air collection chamber is connected with the dust remover, and the carbon dioxide condensation mechanism is connected with the air collection chamber and used for condensing the received dried airflow so as to condense the carbon dioxide in the airflow 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 cools down with the air collecting chamber, and the dry air current after the cubic cooling lets in the carbon dioxide condensation mechanism again and condenses, has improved the condensation effect of carbon dioxide.
Description
Technical Field
The application coal mine relates to the technical field, and especially relates to a non-power-consumption carbon dioxide multi-path recovery device in a coal mine air shaft.
Background
In the coal mining industry, a large amount of carbon dioxide exists in the airflow of the coal mine air shaft, the carbon dioxide is directly discharged into the air, so that the 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 airflow discharged from the coal mine air shaft needs to be recovered, and the carbon dioxide condensation effect is poor because the temperature of the airflow discharged from the coal mine air shaft reaches 30-40 ℃ and the carbon dioxide in the airflow is directly condensed and recovered.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the application aims to provide a multi-path recovery device for carbon dioxide without power consumption in a coal mine air shaft, the device enables air flow in the air shaft to be dispersed in a plurality of adjustable variable speed air channels for processing by arranging a plurality of adjustable variable speed air channels on the side wall of the air shaft, the processing efficiency is improved, meanwhile, the adjustable variable speed air channels can realize preliminary cooling of the air flow temperature, then the air flow enters a dust remover to be cooled again by cold air flow introduced into the dust remover, the air flow after dust removal is cooled again by cold air flow in a gas collection chamber, dry air flow after three times of cooling is introduced into a carbon dioxide condensation mechanism to be condensed, the condensation effect of the carbon dioxide is improved, the cold air flow in the carbon dioxide condensation mechanism can be directly used for condensation in the dust remover and the gas collection chamber, the recycling of energy is realized, and after part of the cold air flow is introduced into the dust remover, and circulating condensation is carried out again to realize full condensation and recovery of the air flow.
In order to achieve the above object, the application provides a no power consumption carbon dioxide multichannel recovery unit in colliery air shaft, includes:
the air shaft is provided with a plurality of adjustable variable speed air channels communicated with the air shaft on the peripheral side of the side wall of the air shaft, and the drift diameter of each adjustable variable speed air channel is gradually reduced along the direction from an air inlet to an air outlet of each adjustable variable speed air channel, so that airflow in the air shaft enters the adjustable variable speed air channels to be condensed at an increased speed;
the dust remover is connected with the air outlet of the adjustable variable speed air duct and is used for removing dust of the air flow entering the dust remover;
the gas collection chamber is connected with the dust remover and is used for drying the received airflow after dust removal;
the carbon dioxide condensing mechanism is connected with the gas collecting chamber and is used for condensing the received dried airflow so as to condense the carbon dioxide in the airflow into liquid carbon dioxide;
and the carbon dioxide collecting box is connected with the carbon dioxide condensing mechanism and used for receiving the 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 utilize part of cold air discharged from the carbon dioxide collecting box to cool the gas collecting chamber and the dust remover.
Furthermore, the top of the adjustable variable-speed air duct is provided with a mounting hole, the top of the adjustable variable-speed air duct is provided with a jack, the power output end of the jack is provided with a valve, and the valve is positioned in the mounting hole so as to control the valve to move up and down in the mounting hole by utilizing the jack to realize the control of the air flow passing through the adjustable variable-speed air duct;
and an explosion-proof air door is arranged at the top of the air shaft.
Further, the carbon dioxide condensation mechanism comprises a cold-hot separator, a cold exchanger is sleeved outside a 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 for reducing the temperature of the hot end and heating flowing water in the heat exchanger by using the hot end;
the cold end is connected with the carbon dioxide collecting box and used for collecting the liquid carbon dioxide generated by the cold end and introducing cold airflow blown out by the cold end into the carbon dioxide collecting box.
Further, the cold end of the cold-hot separator comprises a connecting pipe, and a first flared pipe and a second flared pipe which are arranged at two ends of the connecting pipe, wherein a large opening end of the first flared pipe and a large opening end of the second flared pipe are respectively connected with two ends of the connecting pipe, and the connecting pipe is provided with CO which is communicated with the connecting pipe2Condensate collection line, said CO2The condensing body 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 end of the second horn pipe, the heat exchanger is sleeved outside the hot pipeline, the side wall of one end, connected with the second horn pipe, of the hot pipeline is provided with a plurality of vent holes, the air inlet direction of the vent holes is arranged along the tangential direction of the hot pipeline, and the vent holes are conical holes gradually reduced from the outside to the inside of the hot pipeline, so that the dried airflow is introduced into the hot pipeline through the vent holes.
Furthermore, a temporary gas storage chamber is sleeved outside the second horn tube, and the vent hole and the cold exchanger are both positioned in the temporary gas storage chamber, so that the dried airflow entering the temporary gas storage chamber enters the heat pipeline through the vent hole after being initially cooled.
Furthermore, a mist nozzle is arranged in the dust remover, a water supply pipeline of the mist nozzle is connected with the cold exchanger, so that the cooled flowing water in the cold exchanger is sprayed into the dust remover through the mist nozzle.
Furthermore, multiple layers of drying agent interlayers are arranged in the collection chamber from top to bottom, so that the airflow after dust removal enters from the bottom of the collection chamber and sequentially passes through the multiple layers of drying agent interlayers for drying, and then enters the carbon dioxide condensation mechanism from the top of the collection chamber;
the cold air pipe sequentially penetrates through the middle parts of the multiple layers of the desiccant interlayers from top to bottom, and is positioned at the topmost layer, and the upper space of the desiccant interlayer is arranged in a spiral shape.
Furthermore, explosion-proof waterproof diversion fans are arranged at 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, and are connected with a thermoelectric generator so as to supply power to 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 from 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, away from a cold air inlet, of the cold air inner pipeline, a second through hole is formed in one end, away from the first through hole, of the cold air outer cavity, the cold air inlet is connected with the carbon dioxide collecting box, and cold air flow introduced into the cold air inner pipeline through the cold air inlet enters the cold air outer cavity through the first through hole and then flows out through the second through hole;
the hot air chamber comprises a hot air inner chamber coated outside the cold air outer chamber, a hot air inlet is formed in one end, away from the cold air inlet, of the hot air inner chamber, a hot air outer chamber is coated outside the hot air inner chamber, one end, away from the hot air inlet, of the hot air inner chamber is communicated with the hot air outer chamber, the hot air outer chamber is close to one end, close to the hot air inlet, of the hot air inlet, a third through hole is formed in the hot air inlet, the hot air inlet is connected with the hot end, so that hot air at the hot end flows into the hot air inner chamber through the hot air inlet at one end of the hot air inner chamber, and then flows out through the third through hole after entering the hot air outer chamber from the other end of the hot air inner chamber.
Additional aspects and advantages of the present 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 present 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 of which:
fig. 1 is a schematic partial structural diagram of a multi-path carbon dioxide recovery device without power consumption in a coal mine air shaft according to an embodiment of the present application;
FIG. 2 is a schematic partial structure diagram of a multi-way carbon dioxide recovery device without power consumption in a coal mine air shaft according to the present application;
FIG. 3 is a schematic structural view of an adjustable variable speed air duct according to the present application;
FIG. 4 is a schematic structural view of a carbon dioxide condensing mechanism according to the present application;
FIG. 5 is a schematic partial structure of FIG. 4 of the present application;
FIG. 6 is a schematic partial structure of FIG. 4 of the present application;
FIG. 7 is a schematic view of the carbon dioxide collection tank of the present application;
FIG. 8 is a schematic structural view of the plenum of the present application;
FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8 of the present application;
fig. 10 is a partial structural schematic diagram of the thermoelectric generator of the present application.
In the figure, 1, an air shaft; 2. a carbon dioxide condensing mechanism; 21. a cold-hot separator; 22. a cold exchanger; 23. heat exchangerA converter; 24. a cold end; 243. CO 22A condensate collection conduit; 244. a connecting pipe; 245. a first flare; 246. a second flare; 247. a hot end 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 gas collection chamber; 41. a desiccant barrier; 42. a cold air pipe; 43. a spiral shape; 44. a sector unit; 5. a carbon dioxide collection box; 51. a box body; 52. a cold air inlet pipe; 53. an air outlet pipe; 54. a dust collector cold air pipe; 55. CO 22A condensate conveying pipe; 6. a dust remover; 7. an explosion-proof air door; 8. a waterproof diversion fan; 9. a thermoelectric generator; 91. a cold air inner pipeline; 911. a first through hole; 912. a cold air inlet; 92. a cold air outer cavity; 93. a hot gas inner cavity; 931. a hot gas inlet; 94. a hot air outer cavity; 95. a thermoelectric power generation sheet; 96. an outer cold air duct; 961. a first annular end cap; 962. an end cover plate; 97. a hot gas inner conduit; 971. a third annular end cap; 98. a hot gas outer duct; 981. a second annular end cap; 982. a fourth annular end cap.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference 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 application include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 1 is a schematic structural diagram of a power consumption-free carbon dioxide multi-path recovery device 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 carbon dioxide without power consumption in an air shaft of a coal mine comprises an air shaft 1, a carbon dioxide condensation mechanism 2, a gas collection chamber 4, a carbon dioxide collection box 5 and a dust remover 6, wherein a plurality of adjustable variable speed air ducts 3 communicated with the air shaft 1 are arranged on the peripheral side of the side wall of the air shaft 1, the drift diameter of each adjustable variable speed air duct 3 is gradually reduced along the direction from the gas inlet to the gas outlet of each adjustable variable speed air duct 3, so that air in the air shaft 1 enters the adjustable variable speed air ducts 3 for speed-up condensation, specifically, air outlet holes are formed in the side wall of the air shaft 1, the adjustable variable speed air ducts 3 are arranged at the air outlet holes, the adjustable variable speed air ducts 3 are provided with horn shapes, the large opening ends of the adjustable variable speed air ducts 3 are arranged on the side wall of the air shaft 1, and then the drift diameter of the air in the movement direction of the air flow in the air shaft 1 is reduced, and then the speed of the air flow entering the adjustable variable speed air duct 3 is gradually increased, and the preliminary cooling and condensation of the air flow are realized.
It should be noted that a plurality of adjustable variable speed air ducts 3 may be disposed on the peripheral side of the air shaft 1, that is, four adjustable variable speed air ducts 3 may be disposed on the peripheral side 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 ducts 3, and the provision of the plurality of adjustable variable speed air ducts 3 may accelerate the recovery of carbon dioxide in the air flow in the air shaft.
The dust remover 6 is connected with the air outlet of the adjustable variable speed air duct 3 and is used for removing dust of the air flow entering the dust remover 6; the gas collection chamber 4 is connected with the dust remover 6 and used for drying received airflow after dust removal, and the carbon dioxide condensation mechanism 2 is connected with the gas collection chamber 4 and used for condensing the received airflow after drying so as to condense carbon dioxide in the airflow into liquid carbon dioxide, so that the content of dust and water vapor in the airflow after being processed by the dust remover 6 and the gas collection chamber 4 is reduced, and further the recovery of subsequent carbon dioxide is not influenced.
In addition, the carbon dioxide collecting box 5 is connected with the carbon dioxide condensing mechanism 2 and used for receiving condensed liquid carbon dioxide, the carbon dioxide collecting box 5 is respectively connected with the air collecting chamber 4 and the dust remover 6, so that part of cold air discharged from the carbon dioxide collecting box 5 is utilized to cool the air collecting chamber 4 and the dust remover 6, the airflow is primarily cooled at the air collecting chamber 4 and the dust remover 6, the temperature of the airflow 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 a large amount of dust is contained in the air flow, in order to improve the recovery of carbon dioxide in the air flow in the air shaft 1, the air flow in the air shaft 1 is dispersed in the adjustable variable speed air channels 3 for treatment by arranging the adjustable variable speed air channels 3 on the side wall of the air shaft 1, the temperature of the air flow is primarily reduced due to acceleration by arranging the structure of the adjustable variable speed air channels 3, then the air flow enters the dust remover 6 for dust removal, the cold air flow introduced into the dust remover 6 is cooled again, the air flow after dust removal is cooled again by the cold air flow in the drying process in the air collection chamber 4, the dry air flow after being cooled for three times is introduced into the carbon dioxide condensation mechanism 2 for condensation, the condensation effect of the carbon dioxide is improved, and 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 energy recycling is realized, and after part of cold air flow is introduced into the dust remover 6, the circulation condensation is carried out again, so that the full condensation and recovery of the air flow are 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, a power output end of the jack 31 is provided with a valve 32, the valve 32 is located in the mounting hole so as to control the valve 32 to move up and down in the mounting hole by using the jack 31 to realize the control of the air flow passing 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 the air shaft 1 needs to be ventilated with CO in the air flow discharged by the air shaft 12When the capture is carried out, 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, and CO is carried out2Capture and can be achieved by controlling the opening and closing of valve 322The captured path number is controlled, when multiple paths are required to be recovered simultaneously, all the valves 32 of the multiple paths of adjustable variable speed air channels 3 can be opened, when a backwind exercise or special requirements are met, 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 through the opened explosion-proof air door 7.
In some embodiments, the carbon dioxide condensing mechanism 2 includes a cold-hot separator 21, a cold exchanger 22 is sleeved outside a cold end 24 of the cold-hot separator 21, the cold exchanger 22 is used for transferring heat to the cold end 24 to cool running water in the cold exchanger 22, a hot end 25 of the cold-hot separator is sleeved with a heat exchanger 23 for reducing the temperature of the hot end 25 and heating the running water in the heat exchanger 23 by using the hot end 25, specifically, the cold exchanger 22 is a spiral pipe wound at the cold end 24, because the cold end 24 has a low temperature, icing can occur outside the cold end 24, deicing needs to be performed frequently, the spiral pipe wound outside the cold end 24 is used as the cold exchanger 22, heat of water can be exchanged to the cold end 24 to realize continuous heat exchange to the cold end 24 by introducing water into the spiral pipe, and icing outside the cold end 24 can be prevented, simultaneously when water in the spiral pipe transmits heat to cold end 24, the temperature in the spiral pipe also can reduce, simultaneously, heat exchanger 23 is established to the outside cover in hot junction 25, can be with the heat conduction in the hot junction 25 to the aquatic in the spiral pipe in heat exchanger 23, make the temperature that gets into the air current in hot junction 25 reduce, and then can reduce the air current temperature that gets into cold end 24, make the condensation effect better, simultaneously because hot junction 25 transmits the heat to heat exchanger 23, make the temperature in the spiral pipe of heat exchanger 23 rise.
In addition, cold junction 24 is connected with carbon dioxide collecting box 5 for collect the liquid carbon dioxide that cold junction 24 produced, let in carbon dioxide collecting box 5 with the cold air current that cold junction 24 blew out simultaneously, can cool down carbon dioxide collecting box 5, prevent that the outside heat of carbon dioxide collecting box 5 from transmitting to carbon dioxide collecting box 5 in, cause the influence to the liquid carbon dioxide of storage wherein, and the cold air current that gets into in carbon dioxide collecting box 5 can let in collection chamber 4 and dust remover 6 again and cool down.
In some embodiments, the cold end 24 configuration of the cold and hot separator may be varied.
As a possible structure, the cold end includes a connection pipe 244 and a first flared pipe 245 and a second flared pipe 246 provided at both ends of the connection pipe 244, a large opening end of the first flared pipe 245 and a large opening end of the second flared pipe 246 are respectively connected to both ends of the connection pipe 244, and the connection pipe 244 is provided with CO communicated with the connection pipe 2442 Condensate collection line 243, CO2The condensate collecting conduit 243 is connected to the carbon dioxide collecting tank 5 byThe diameter of the second flared tube 246 gradually increases with the outflow of the drying air flow, so as to further reduce the temperature of the air flow from the second flared tube 246, so as to generate more liquid CO2The diameter of the first flared tube 245 gradually decreases as the gas flows out, so as to collect more liquid CO2。
In addition, the hot end 25 comprises a hot pipe 251 connected with the small end of the second horn pipe 246, the heat exchanger 23 is sleeved outside the hot pipe 251, circulating water in the spiral pipe of the heat exchanger 23 can be used for heating bath water or heating radiators after being subjected to heat exchange heating through the hot end 25, the side wall of one end, connected with the second horn pipe 246, of the hot pipe 251 is provided with a plurality of vent holes 252, the other end of the side wall is provided with a hot end flow regulator 247, the hot end flow regulator 247 can regulate the opening degree of a hot end outlet according to requirements for controlling the refrigeration effect of the cold-hot separator, the air inlet direction of the vent holes is arranged along the tangential direction of the hot pipe 251, so that dry air flow entering the hot pipe 251 enters along the tangential direction of the hot pipe 251, a high-speed rotating vortex is formed at one end of the hot pipe 251, and simultaneously the vent holes 252 are arranged into tapered holes gradually reduced from the outside to the inside of the hot pipe 251, so as to introduce the dry airflow 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 airflow enters the vent hole 252, the flow speed of the dry airflow in the vent hole 252 is gradually increased due to the reduction of the diameter of the vent hole 252, thereby enhancing the CO2And (4) condensation effect.
It should be detailed that a fixing plate 253 is fixed on one end surface of the heat pipe 251, a through hole is formed in the middle of the fixing plate 253, a small end of the second flared tube 246 is fixed at the through hole, and the inner diameter of the small end is the same as the aperture of the through hole, so that a step is naturally formed between the second flared tube 246 and the heat pipe 251 to prevent the hot fluid gas from moving towards the cold end.
In some embodiments, the second flared tube 246 is externally sleeved with the gas buffer chamber 26, the vent 252 and the cold exchanger 22 are both located in the gas buffer chamber 26, and the dry gas flow is introduced into the gas buffer chamber 26 for preliminary cooling and then enters through the vent 252Go into heat pipeline 251, specifically, through setting up gaseous temporary storage chamber 26 for dry air current gets into gaseous temporary storage chamber 26 earlier, because gaseous temporary storage chamber cover is established outside the cold junction, makes the gas that gets into in gaseous temporary storage chamber 26 carry out preliminary condensation earlier, and then the temperature of the air current that has admitted into in the cold and hot separator has strengthened CO2And (4) condensation effect.
It should be noted that the structure of the carbon dioxide collection tank 5 may be various.
As a possible structure, the carbon dioxide collection 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, the small opening end of the conical structure is a cold air inlet, the cold air inlet is connected with the lower opening end of the first horn 245, the conical structure is arranged, meanwhile, an air outlet pipe 53 communicated with the carbon dioxide collection box 5 is arranged at the upper part of the side wall of the carbon dioxide collection box 5, the air outlet pipe 53 is arranged obliquely upwards, so that the liquid carbon dioxide in the carbon dioxide collection box 5 can be prevented from escaping outwards, the cold air flow introduced into the carbon dioxide collection box 5 is discharged through the air outlet pipe 53, a dust remover cold air pipe 54 communicated with the air outlet pipe 53 is arranged on the air outlet pipe 53, the dust remover cold air pipe 54 is connected to the dust remover 6, part of the cold air flow is introduced into the dust remover 6 through the dust remover cold air pipe 54, the air flow in the dust remover 6 is cooled, the circulating condensation of partial cold air flow can be realized, meanwhile, the air outlet pipe 53 is connected with the air collection chamber 4, partial cold air flow is led into the air collection chamber 4, and the side wall of the box body 51 is provided with a gas outlet pipe connected with CO2CO communicated with the condensate collecting pipe 2432Condensate transfer line 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 as to spray cooled running water in the cold exchanger 22 into the dust remover 6 through the mist nozzle, and since the water flow in the cold exchanger 22 is cooled after heat exchange is performed through the cold end 24, the cooled water flow is directly sprayed into the dust remover 6 through the mist nozzle, dust in the air flow is captured through atomized water, and the air flow is cooled again.
In some embodiments, multiple layers of desiccant barriers 41 are arranged in the collection chamber 4 from top to bottom, so that the dedusted airflow enters from the bottom of the collection chamber 4, passes through the multiple layers of desiccant barriers 41 in sequence for drying, and then enters the carbon dioxide condensation mechanism 2 from the top of the collection chamber 4, that is, the collection chamber 4 may be configured as a cylindrical structure, then a plurality of pallets are uniformly distributed at the same height on the inner wall of the collection chamber 4, the desiccant barriers 41 are arranged on the plurality of pallets and supported by the pallets, meanwhile, the desiccant barriers 41 may be divided into a plurality of fan-shaped units 44, and each fan-shaped unit 44 is arranged in a sealed manner, so that the dedusted airflow does not flow out from between two fan-shaped units 44, meanwhile, each fan-shaped unit 44 is also arranged in a sealed manner with the side wall of the collection chamber 4, and in addition, in order to reduce the temperature of the airflow in the collection chamber 4, a cold air pipe 42 may be arranged in the middle of the collection chamber 4, the cold air pipe 42 passes through the middle of the multiple layers of desiccant barriers 41 from top to bottom, the cold air pipe 42 is arranged in a spiral shape 43 in the upper space of the topmost desiccant barrier 41, that is, one end of each sector unit 44 is provided with an arc-shaped hole, the drying agent interlayer 41 formed by the fan-shaped units 44 is in an annular structure, the outer circular side wall of the drying agent interlayer 41 in the annular structure is connected with the inner wall of the gas collection chamber 4, the inner circular side wall of the drying agent interlayer 41 is hermetically connected with the side wall of the cold air pipe 42, so that the air flow is prevented from overflowing from the connection part, the temperature in the air collection chamber 4 can be reduced through the arrangement of the cold air pipe 42, each fan-shaped unit 44 is convenient to replace by arranging the desiccant partition layer 41 into a plurality of fan-shaped units 44, the cold air pipe 42 is connected with the carbon dioxide collection box 5, namely the cold air pipe 42 is connected with the air outlet pipe 53, and 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 velocity of the air flow and further cool the air flow, explosion-proof waterproof diversion fans 8 are respectively arranged at the air outlet of the adjustable variable speed air duct 6, the air outlet of the dust collector 1 and the air outlet of the air collection chamber 4, the explosion-proof waterproof diversion fans 8 are connected with a thermoelectric generator 9 to supply power to the explosion-proof waterproof diversion fans 8 by using the thermoelectric generator 9, the thermoelectric generator 9 is respectively connected with the carbon dioxide collection tank 5 and the hot end 25 to generate power by using the temperature difference between the cold air flow in the carbon dioxide collection tank 5 and the hot air flow discharged by the hot end 25, that is, the thermoelectric generator 9 is connected with the air outlet pipe 53 of the carbon dioxide collection tank 5 to introduce part of the cold air flow into the thermoelectric generator 9, and meanwhile, the hot air flow generated by the hot end 25 also passes through the thermoelectric generator 9 to realize power generation by the temperature difference between the cold air flow and the hot air flow, the explosion-proof waterproof diversion fan 8 is arranged at the outlet of the gas collection chamber 4, so that the reduction of the wind speed caused by the airflow passing through the multilayer drying agent interlayer 41 is compensated.
It should be noted that there are various structures of the thermoelectric generator 9 that can realize thermoelectric power generation.
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 pipeline 91 and a cold air outer chamber 92 covering the cold air inner pipeline 91, a thermoelectric generation sheet 95 is covered on the outside of the cold air outer chamber 92, one end of the cold air inner pipeline 91, which is far away from a cold air inlet 912 of the cold air inner pipeline 91, is provided with a first through hole 911 communicated with the cold air outer chamber 92, one end of the cold air outer chamber 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 collection box 5, that is, the cold air inlet 912 is connected with an air outlet pipe 53 of the carbon dioxide collection box 5, so that the cold air introduced into the cold air inner pipeline 91 through the cold air inlet 912 enters the cold air inner chamber 92 through the first through hole 911 and then flows out through the second through hole, the cold air storage space is increased and the cold air flow time is prolonged by using the pipeline 91 and the cold air outer chamber 92 covering the outside of the cold air inner pipeline 91, the cold air in the pipeline 91 is ensured to be relatively constant, and the power generation effect of the thermoelectric generator is improved.
In addition, hot air chamber is including the cladding at the outside hot gas inner chamber 93 of cold air exocoel 92, and the one end that cold air inlet 912 was kept away from to hot gas inner chamber 93 is provided with hot gas inlet 931, and the outside cladding of hot gas inner chamber 93 has hot gas exocoel 94, and hot gas inner chamber 93 is kept away from hot gas inlet 931 one end and is linked together with hot gas exocoel 94, and hot gas exocoel 94 is close to hot gas inlet 931 one end and is provided with the third through-hole, and hot gas inlet 931 links to each other with hot junction 25 to make the hot gas inlet 931 of hot junction 25 let in through hot gas inner chamber 93 one end in the hot gas inner chamber 93, then flow out through the third through-hole after getting into hot gas exocoel 94 from the other end of hot gas inner chamber 93. Utilize the cladding to ensure the constancy of temperature of steam inner chamber 93 at the outside steam exocoel 94 of steam inner chamber 93, prevent that naked steam inner chamber 93 outer wall from carrying out the heat exchange with external environment, reduce the inside steam temperature of steam inner chamber 93 to reduce the power generation effect. In detail, the cold air chamber comprises an inner cold air duct 91 and an outer cold air duct 96 sleeved outside the inner cold air duct 91, a first annular end cover 961 is connected between an outer wall of one end of a cold air inlet 912 of the inner cold air duct 91 and an inner wall of one end of the outer cold air duct 96, the other end of the inner cold air duct 91 and the other end of the outer cold air duct 96 are both fixed on an end cover plate 962, a cold air outer cavity 92 is defined by the inner cold air duct 91, the outer cold air duct 96, the end cover plate 962 and the first annular end cover 961, a thermoelectric generation sheet 95 is respectively laid on the outer wall of the outer cold air duct 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 inner cold air duct 91 near the end cover plate 962, a plurality of second through holes are arranged on the first annular end cover 961, the cold air inlet 912 is connected with an air outlet 53, and the hot air chamber comprises a hot air duct 97 and an outer duct 98 sleeved outside the hot air duct 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 pipeline 97 and the hot air outer pipeline 98, the hot air inner pipeline 97 is sleeved outside the cold air outer pipeline 96, a third annular end cover 971 is connected between the outer wall of the cold air outer pipeline 96 and the inner wall of one end of the hot air inner pipeline 97 far away from the second annular end cover 981, a hot air inner cavity 93 is enclosed among the cold air outer pipeline 96, the hot air inner pipeline 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 pipeline 96 and the inner wall of one end of the hot air outer pipeline 98 close to the third annular end cover 971, a hot air outer cavity 94 is enclosed among the hot air inner pipeline 97, the hot air outer pipeline 98, the cold air outer pipeline 96, the second annular end cover 981, the third annular end cover 971 and the fourth annular end cover 981, a plurality of third through holes and fourth through holes 972 are respectively arranged on the second annular end cover 981 and the third annular end cover 971, the hot air inlet 931 is connected to the hot end 25, and hot air introduced into the hot air inner cavity 93 through the hot air inlet 931 flows into the hot air outer cavity 94 through the fourth through hole 972 and then flows out through the third through hole.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
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 the scope of the preferred embodiments of the present application includes other implementations 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 present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," 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 application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. The utility model provides a no consumption carbon dioxide multichannel recovery unit in colliery air shaft 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 peripheral side of the side wall of the air shaft, and the drift diameter of each adjustable variable speed air channel is gradually reduced along the direction from an air inlet to an air outlet of each adjustable variable speed air channel, so that airflow in the air shaft enters the adjustable variable speed air channels to be condensed at an increased speed;
the dust remover is connected with the air outlet of the adjustable variable speed air duct and is used for removing dust of the air flow entering the dust remover;
the gas collection chamber is connected with the dust remover and is used for drying the received airflow after dust removal;
the carbon dioxide condensing mechanism is connected with the gas collecting chamber and is used for condensing the received dried airflow so as to condense the carbon dioxide in the airflow into liquid carbon dioxide;
and the carbon dioxide collecting box is connected with the carbon dioxide condensing mechanism and used for receiving the 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 utilize part of cold air discharged from the carbon dioxide collecting box to cool the gas collecting chamber and the dust remover.
2. The coal mine air shaft power consumption-free carbon dioxide multi-path recovery device as claimed in claim 1, wherein a mounting hole is formed in the top of the adjustable variable speed air duct, a jack is arranged on 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 located in the mounting hole, so that the valve is controlled to move up and down in the mounting hole by the jack, and the air flow passing through the adjustable variable speed air duct is controlled;
and an explosion-proof air door is arranged at the top of the air shaft.
3. The coal mine air shaft power consumption-free carbon dioxide multi-path recovery device as claimed in claim 1, wherein the carbon dioxide condensation mechanism comprises a cold-hot separator, a cold exchanger is sleeved outside a cold end of the cold-hot separator, and the cold exchanger is used for transferring heat to the cold end so as to cool running water in the cold exchanger;
the hot end of the cold-hot separator is sleeved with a heat exchanger for reducing the temperature of the hot end and heating flowing water in the heat exchanger by using the hot end;
the cold end is connected with the carbon dioxide collecting box and used for collecting the liquid carbon dioxide generated by the cold end and introducing cold airflow blown out by the cold end into the carbon dioxide collecting box.
4. The coal mine air shaft power consumption-free carbon dioxide multi-path recovery device as claimed in claim 3, wherein the cold end of the cold-hot separator comprises a connecting pipe and a first flared pipe and a second flared pipe which are arranged at two ends of the connecting pipe, the large opening end of the first flared pipe and the large opening end of the second flared pipe are respectively connected with two ends of the connecting pipe, and the connecting pipe is provided with CO which is communicated with the connecting pipe2Condensate collection line, said CO2The condensing body collecting pipeline is connected with the carbon dioxide collecting box.
5. The coal mine air shaft power consumption-free carbon dioxide multi-path recovery device as claimed in claim 4, wherein the hot end of the cold-hot separator comprises a hot pipe connected with the small end of the second trumpet tube, the heat exchanger is sleeved outside the hot pipe, the side wall of one end of the hot pipe connected with the second trumpet tube is provided with a plurality of vent holes, the air inlet direction of the vent holes is arranged along the tangential direction of the hot pipe, and the vent holes are arranged as tapered holes gradually decreasing from the outside to the inside of the hot pipe, so that the dried air flow is introduced into the hot pipe through the vent holes.
6. The coal mine air shaft power consumption-free carbon dioxide multi-path recovery device as claimed in claim 5, wherein a gas temporary storage chamber is sleeved outside the second horn tube, and the vent hole and the cold exchanger are both positioned in the gas temporary storage chamber, so that the dried gas flow entering the gas temporary storage chamber enters the heat pipeline through the vent hole after being initially cooled.
7. The multi-path recovery device for carbon dioxide without power consumption in the air shaft of the coal mine as claimed in claim 3, wherein a mist nozzle is arranged in the dust remover, a water supply pipeline of the mist nozzle is connected with the cold exchanger, so that the cooled flowing water in the cold exchanger is sprayed into the dust remover through the mist nozzle.
8. The coal mine air shaft power consumption-free carbon dioxide multi-path recovery device as claimed in claim 3, wherein a plurality of layers of drying agent interlayers are arranged in the collection chamber from top to bottom, so that the dedusted airflow enters from the bottom of the collection chamber, passes through the plurality of layers of drying agent interlayers in sequence, is dried, and then enters the carbon dioxide condensation mechanism from the top of the collection chamber;
the cold air pipe sequentially penetrates through the middle parts of the multiple layers of the desiccant interlayers from top to bottom, and is positioned at the topmost layer, and the upper space of the desiccant interlayer is arranged in a spiral shape.
9. The multi-path recovery device for the carbon dioxide without power consumption in the coal mine air shaft according to claim 3, wherein explosion-proof waterproof diversion fans are arranged at 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, and are connected with a thermoelectric generator so as to supply power to the explosion-proof waterproof diversion fans by using 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 from the hot end.
10. The coal mine air shaft power consumption-free carbon dioxide multi-path recovery device as claimed in claim 9, 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, away from a cold air inlet, of the cold air inner pipeline, a second through hole is formed in one end, away from the first through hole, of the cold air outer cavity, the cold air inlet is connected with the carbon dioxide collecting box, and cold air flow introduced into the cold air inner pipeline through the cold air inlet enters the cold air outer cavity through the first through hole and then flows out through the second through hole;
the hot air chamber comprises a hot air inner chamber coated outside the cold air outer chamber, a hot air inlet is formed in one end, away from the cold air inlet, of the hot air inner chamber, a hot air outer chamber is coated outside the hot air inner chamber, one end, away from the hot air inlet, of the hot air inner chamber is communicated with the hot air outer chamber, the hot air outer chamber is close to one end, close to the hot air inlet, of the hot air inlet, a third through hole is formed in the hot air inlet, the hot air inlet is connected with the hot end, so that hot air at the hot end flows into the hot air inner chamber through the hot air inlet at one end of the hot air inner chamber, and then flows out through the third through hole after entering the hot air outer chamber from the other end of the hot air inner chamber.
Priority Applications (3)
| 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 |
| AU2022411124A AU2022411124A1 (en) | 2021-12-14 | 2022-09-21 | Zero-power-consumption multi-path carbon dioxide 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 |
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| 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 true CN114294039A (en) | 2022-04-08 |
| CN114294039B CN114294039B (en) | 2023-12-22 |
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| CN (1) | CN114294039B (en) |
| AU (1) | AU2022411124A1 (en) |
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| WO2023109234A1 (en) * | 2021-12-14 | 2023-06-22 | 天地科技股份有限公司 | Zero-power-consumption multi-path carbon dioxide recovery device in coal mine air shaft |
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| CN117514349A (en) * | 2023-11-24 | 2024-02-06 | 长沙理工大学 | Air temperature regulation and control system and method in compressed air energy storage underground chamber |
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Also Published As
| Publication number | Publication date |
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| WO2023109234A1 (en) | 2023-06-22 |
| WO2023109234A8 (en) | 2024-08-08 |
| AU2022411124A1 (en) | 2024-08-01 |
| CN114294039B (en) | 2023-12-22 |
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