CN117282212B - Deposition furnace tail gas power generation system and tail gas treatment method - Google Patents
Deposition furnace tail gas power generation system and tail gas treatment method Download PDFInfo
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- CN117282212B CN117282212B CN202311404309.2A CN202311404309A CN117282212B CN 117282212 B CN117282212 B CN 117282212B CN 202311404309 A CN202311404309 A CN 202311404309A CN 117282212 B CN117282212 B CN 117282212B
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- 230000008021 deposition Effects 0.000 title claims abstract description 25
- 238000010248 power generation Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 214
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 79
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 23
- 239000001301 oxygen Substances 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 23
- 239000007921 spray Substances 0.000 claims description 21
- 238000011010 flushing procedure Methods 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 22
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 25
- 238000005086 pumping Methods 0.000 description 24
- 238000001914 filtration Methods 0.000 description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 20
- 229920000049 Carbon (fiber) Polymers 0.000 description 16
- 239000004917 carbon fiber Substances 0.000 description 15
- 238000009826 distribution Methods 0.000 description 13
- 239000007787 solid Substances 0.000 description 10
- 210000003437 trachea Anatomy 0.000 description 9
- 238000004880 explosion Methods 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The application relates to a deposition furnace tail gas power generation system and a tail gas treatment method, and relates to the field of carbon/carbon composite material manufacturing; the furnace body is provided with a first air inlet and a first air outlet; the second tail gas treatment assembly comprises a gas generator, and the gas inlet end of the gas generator is communicated with the first gas outlet; the furnace body is provided with an electric inlet port, the gas generator is provided with an electric outlet port, and the electric outlet port is electrically communicated with the electric inlet port; the tail gas treatment method comprises the following steps: introducing tail gas of the furnace body into a gas generator, converting heat energy into electric energy by the gas generator, and outputting current; the electric inlet of the furnace body is communicated with the electric outlet of the gas generator so as to enable electric current to be introduced into the furnace body. The application has the effects of environmental protection and energy conservation.
Description
Technical Field
The application relates to the field of carbon/carbon composite material manufacturing, in particular to a deposition furnace tail gas power generation system and a tail gas treatment method.
Background
Carbon/carbon composites refer to high performance composites formed from carbon fibers and fabric reinforced carbon matrix. The material has the excellent performances of light specific gravity, low thermal expansion coefficient, high temperature resistance, corrosion resistance, stable friction coefficient, good heat and electricity conducting performance and the like, and is the best candidate material for manufacturing high-temperature thermal field components and friction components.
The system for treating the tail gas of the deposition furnace generally adopts an active carbon adsorption method or an incineration method, for example, a system for treating and utilizing waste heat and a method for treating and utilizing waste heat of tail gas of a carbon-carbon composite material preparation process disclosed in China patent application number CN 202110583609.6.
The tail gas treatment system in the related art directly burns and discharges the filtered tail gas into the atmosphere, and the tail gas contains a large amount of hydrogen which can be used as fuel for power generation, and the tail gas treatment device in the technology causes energy waste and also causes a certain degree of pollution to the air, so that an environment-friendly and energy-saving deposition furnace tail gas treatment system is needed.
Disclosure of Invention
In order to realize efficient and energy-saving operation of the tail gas treatment equipment of the deposition furnace, the application provides a tail gas power generation system of the deposition furnace.
In a first aspect, the application provides a deposition furnace tail gas power generation system, which adopts the following technical scheme: the device comprises a furnace body and an exhaust device, wherein the exhaust assembly comprises a second tail gas treatment assembly;
The furnace body is provided with a first air inlet and a first air outlet;
The second tail gas treatment assembly comprises a gas generator, and the gas inlet end of the gas generator is communicated with the first gas outlet;
The furnace body is provided with an electric inlet, the gas generator is provided with an electric outlet, and the electric outlet is electrically communicated with the electric inlet.
By adopting the technical scheme, after the furnace body is electrified, the carbon fiber preform reacts with gas at high temperature in the furnace body, tail gas generated after reaction is treated by the second tail gas treatment component, but a large amount of fuel and electric energy are consumed in the process, and the efficiency is lower.
Optionally, the device further comprises a gas transmission assembly, wherein the gas transmission assembly comprises a second main gas pipe and a third main gas pipe;
The air inlet end of the second main air pipe is communicated with the first air outlet;
The air inlet end of the third main air pipe is communicated with the first air outlet, and the air outlet end is communicated with the gas generator;
The second main air pipe is provided with a first valve, and the third main air pipe is provided with a second valve.
By adopting the technical scheme, after the carbon fiber reacts with the gas at high temperature in the furnace body, the generated gas needs to be discharged outside the furnace body, and for this purpose, the first total air pipe communicated with the first air outlet of the furnace body can be used for discharging tail gas; before the carbon fiber preform is heated, the furnace body is required to be in a vacuum state, so that the air inlet end of the second main air pipe is communicated with the first air outlet, the air in the furnace body is discharged by the second main air pipe, and the second main air pipe is provided with a first valve for controlling the on-off of the air entering the second main air pipe; when the carbon fiber reacts with the gas in the furnace body at high temperature, the tail gas after the reaction is required to be discharged, therefore, the air inlet end of the third main air pipe is communicated with the first air outlet, so that the tail gas in the furnace body is discharged from the third main air pipe, and the third main air pipe is provided with a second valve for controlling the on-off of the tail gas entering the third main air pipe, therefore, the application can discharge the air of the furnace body and the tail gas generated after the reaction.
Optionally, an oxygen detector is arranged on the third main air pipe.
By adopting the technical scheme, when the carbon fiber preform reacts with gas in the furnace body, the gas pipe explosion can be caused when the oxygen content in the tail gas in the furnace body is too high, so that the oxygen detector is arranged on the third total gas pipe, and the oxygen content of the gas entering the third total gas pipe can be detected.
Optionally, a pressure sensor is arranged on the third main air pipe.
Through adopting above-mentioned technical scheme, after the gas is let in the furnace body, tail gas gets into the third total trachea, and at this moment, can produce pressure in the third total trachea, after pressure exceeded the intraductal allowable stress, then can take place the explosion equally, for this reason, is equipped with pressure sensor on the third total trachea, can detect the gas pressure size that gets into the third total trachea.
Optionally, the gas transmission assembly further comprises a fourth main gas pipe, an air inlet end of the fourth main gas pipe is communicated with the third main gas pipe, an air outlet end of the fourth main gas pipe is communicated with the second main gas pipe, the air inlet end of the fourth main gas pipe is located at the air flow transmission upstream of the second valve, and a fourth valve is arranged on the fourth main gas pipe.
By adopting the technical scheme, when the oxygen content or pressure of the tail gas entering the third main air pipe exceeds the standard, the third main air pipe can be caused to explode, so that the air inlet end of the fourth main air pipe is communicated with the third main air pipe, the air outlet end of the fourth main air pipe is communicated with the second main air pipe, and when the oxygen content or pressure of the tail gas exceeds the standard, the gas enters the fourth main air pipe from the third main air pipe to be discharged in an emergency mode.
Optionally, the second tail gas treatment assembly further comprises a second collecting box and a spray head, a fifth air inlet and a fifth air outlet are formed in the second collecting box, the air outlet end of the third main air pipe is connected to the second collecting box and communicated with the fifth air inlet, the fifth air inlet is located at the top of the second collecting box, the fifth air outlet is located at the bottom of the side wall of the second collecting box, the spray head is located in the second collecting box, and the water spraying direction of the spray head is vertically downward.
By adopting the technical scheme, the tail gas generated after the reaction of the carbon fiber preform and the gas is discharged through the third main gas pipe, and because the tail gas contains methane, hydrogen and other gases and tar, particulate matters and other macromolecular solid impurities, in order to filter the impurities, the gas outlet end of the third main gas pipe is communicated with the fifth gas inlet of the second collecting box, and the spray head positioned in the second collecting box is used for spraying water so as to carry out sedimentation filtration on the impurities in the gas entering the second collecting box from the fifth gas inlet, so that the application can carry out sedimentation filtration on the impurities in the tail gas.
Optionally, the second tail gas treatment assembly further comprises a first filter plate fixedly connected to the inner wall of the second collecting box, the first filter plate is located below the spray head, and a plurality of first filter holes are formed in the first filter plate in a penetrating mode along the vertical direction.
By adopting the technical scheme, as the tail gas contains part of macromolecular solid substances, the macromolecular solid substances can be filtered by the first filter holes on the first filter plate under the action of water.
Optionally, the second tail gas treatment assembly further comprises a second filter plate, the second filter plate is fixedly connected to the inner wall of the second collecting box and is located on one side, away from the spray head, of the first filter plate, the second filter plate penetrates through the second filter plate in the vertical direction to form a plurality of second filter holes, and the aperture of each second filter hole is smaller than that of the first filter hole.
By adopting the technical scheme, the tail gas also contains partial micromolecular solid substances and gaseous impurities, so that the aperture of the second filter holes on the second filter plate is smaller than that of the first filter holes, and the micromolecular impurities can be filtered.
In a second aspect, the application provides a method for treating tail gas of a deposition furnace, which adopts the following technical scheme: the method comprises the following steps:
introducing tail gas of the furnace body into a gas generator, converting heat energy into electric energy by the gas generator, and outputting current;
the electric inlet of the furnace body is communicated with the electric outlet of the gas generator so as to enable electric current to be introduced into the furnace body.
Through adopting above-mentioned technical scheme, in order to realize the reutilization of energy, in letting in gas generator with the tail gas, produce the electric current by gas generator, the electric current is let in the electric port that advances of furnace body by gas generator's play electric port, can provide the electric energy for the heating reaction of furnace body.
Optionally, the method further comprises the following steps:
Tail gas detection:
Judging whether the oxygen content in the third total air pipe is higher than a preset value, if so, closing the second valve, and opening the fourth valve so that the air flow is sequentially discharged from the third total air pipe, the fourth total air pipe and the second total air pipe;
judging whether the pressure in the third total air pipe is higher than a preset value, if so, closing the second valve, and opening the fourth valve so that the air flow is sequentially discharged from the third total air pipe, the fourth total air pipe and the second total air pipe.
Through adopting above-mentioned technical scheme, when the intraductal tail gas oxygen content of third total trachea and pressure are higher than the default, can lead to the third total trachea to take place the explosion, in order to avoid taking place the explosion, then close the second valve, open the fourth valve, make the air current pass through third total trachea, fourth total trachea and second total trachea discharge in proper order.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the application can effectively reduce energy consumption;
2. the application can avoid the situation of explosion caused by overhigh oxygen content of the gas in the furnace body;
3. The application can filter macromolecular solid impurities and micromolecular gaseous impurities in the tail gas.
Drawings
FIG. 1 is a schematic diagram of a furnace body and a vacuum extractor of a deposition furnace tail gas power generation system according to the present application;
FIG. 2 is a schematic view of the structure of the furnace, the vacuum extractor and the first tail gas treatment assembly of the present application;
FIG. 3 is a cross-sectional view of a first exhaust treatment assembly of the present application, illustrating the mating relationship of a filter screen to a first collection tank;
FIG. 4 is a cross-sectional view of a first exhaust treatment assembly of the present application, illustrating the mating relationship of a filter screen, an activated carbon sheet, and a first collection tank;
FIG. 5 is a schematic view of the structure of the vacuum apparatus and the second exhaust treatment assembly of the present application;
FIG. 6 is a cross-sectional view of a second exhaust treatment assembly of the present application;
FIG. 7 is a schematic diagram of a second exhaust treatment assembly and a first pumping assembly according to the present application;
FIG. 8 is a cross-sectional view of a filter assembly of the present application;
FIG. 9 is a cross-sectional view of a second exhaust treatment assembly and pumping device of the present application;
FIG. 10 is an enlarged view of part A of the present application;
FIG. 11 is a schematic view of the structure of the furnace, vacuum extractor, exhaust, chimney and gas generator of the present application.
Reference numerals illustrate: 1. a furnace body; 11. a first air inlet; 12. a first air outlet; 2. a vacuum pumping device; 21. a vacuum pump; 211. a second air inlet; 212. a second air outlet; 213. a third air outlet; 3. an exhaust device; 31. a first tail gas treatment assembly; 311. a first collection box; 3111. a fourth air inlet; 3112. a fourth air outlet; 312. a filter screen; 3121. a first filtration zone; 3122. a second filtration zone; 313. an activated carbon plate; 3131. a third filtration zone; 3132. a fourth filtration zone; 32. a first fan; 33. a chimney; 34. a second tail gas treatment assembly; 341. a second collection box; 3411. a fifth air inlet; 3412. a fifth air outlet; 3413. a first sidewall; 3414. a second sidewall; 342. a spray head; 343. a first filter plate; 3431. a first filter hole; 344. a second filter plate; 3441. a second filter hole; 3442. flushing a groove; 3443. a first communication groove; 3444. a second communication groove; 3445. a discharge port; 35. a gas-fired power generator; 36. a second fan; 37. a water inlet pipe; 4. a water pumping device; 41. a first pumping assembly; 411. a first water suction pipe; 412. a first water pump; 42. a second pumping assembly; 421. a second water suction pipe; 422. a second water pump; 423. a flexible tube; 424. a hard tube; 425. plugging the bolts; 5. a filter assembly; 51. a water filtering film; 52. a fixed frame; 6. a gas delivery assembly; 61. a first total air duct; 62. a first gas distribution pipe; 63. a second total air pipe; 631. a first valve; 64. a second gas-distributing pipe; 65. a third total air pipe; 651. a second valve; 652. an oxygen concentration tester; 653. a pressure sensor; 66. a third gas-distributing pipe; 661. a third valve; 67. a fourth total air pipe; 671. and a fourth valve.
Detailed Description
The application is described in further detail below with reference to fig. 1-11.
The embodiment of the application discloses a deposition furnace tail gas power generation system. Referring to fig. 1, a power generation system for tail gas of a deposition furnace includes a furnace body 1, in order to realize gas inlet and outlet in the furnace body 1, a first gas inlet 11 and a first gas outlet 12 are formed in the furnace body 1, and under different working phases of the furnace body 1, the gas introduced into the furnace body 1 from the first gas inlet 11 and the gas discharged from the first gas outlet 12 are different, which specifically includes the following two phases:
The first stage: the carbon fiber preform enters the furnace body 1 in the previous stage, wherein the inside of the furnace body 1 is air, and the preparation quality of the carbon fiber preform is affected if the carbon fiber preform contacts oxygen in the heating process, so that the air in the furnace body 1 needs to be exhausted firstly in the first stage to reduce the oxygen content in the furnace body 1;
And a second stage: the carbon fiber preform enters the furnace body 1 to be heated until the heating is completed, and the gas introduced into the furnace body 1 is reaction gas, and the reaction gas and the carbon fiber preform generate tail gas at high temperature under the action of the reaction gas, and the tail gas needs to be discharged from the first air outlet 12 of the furnace body 1.
Referring to fig. 1, in each stage, in order to extract the gas in the furnace body 1, a deposition furnace exhaust gas power generation system further includes a vacuum extractor 2, the vacuum extractor 2 includes a plurality of vacuum pumps 21, the vacuum pumps 21 are provided with a second air inlet 211, a second air outlet 212 and a third air outlet 213, the second air inlet 211 is communicated with the first air outlet 12 of the furnace body 1, and the gas in the furnace body 1 is extracted by the vacuum pumps 21 and then is discharged through the second air outlet 212 and the third air outlet 213.
Referring to fig. 2, when the operation of the furnace body 1 is in the first stage, air in the furnace body 1 needs to be exhausted, for this purpose, a deposition furnace tail gas power generation system further includes an exhaust device 3, where the exhaust device 3 includes a first tail gas treatment component 31, a first fan 32 and a chimney 33, the first tail gas treatment component 31 includes a first collecting box 311, a fourth air inlet 3111 and a fourth air outlet 3112 are provided on the first collecting box 311, the fourth air inlet 3111 is communicated with the second air outlet 212 of the vacuum pump, in this embodiment, the first fan 32 is an exhaust fan, and a casing of the first fan 32 is fixedly connected to an inner wall of the fourth air outlet 3112, so that air flow is pumped into the first collecting box 311 by the first fan 32 and then exhausted through the fourth air outlet 3112; the bottom opening of the chimney 33 communicates with the fourth air outlet 3112, and the air discharged from the fourth air outlet 3112 is discharged to the atmosphere through the chimney 33.
Referring to fig. 2 and 3, in order to filter the solid particulate matters in the air, the first exhaust gas treatment assembly 31 further includes a filter screen 312, and an outer circumferential wall of the filter screen 312 is fitted with an inner circumferential wall of the first collection tank 311, so that the filter screen 312 divides the first collection tank 311 into a first filtering zone 3121 and a second filtering zone 3122 to filter the solid particulate matters in the gas entering the first collection tank 311 through the fourth gas inlet 3111.
Referring to fig. 3 and 4, in order to filter gaseous impurities in air, the first exhaust gas treatment assembly 31 further includes an activated carbon plate 313, the activated carbon plate 313 is positioned at the second filtering area 3122, an outer circumferential wall of the activated carbon plate 313 is attached to an inner circumferential wall of the first collecting tank 311, the activated carbon plate 313 further partitions the second filtering area 3122 into a third filtering area 3131 and a fourth filtering area 3132 to adsorb the gaseous impurities in the gas, and the gas entering the first collecting tank 311 through the fourth gas inlet 3111 is discharged through the fourth gas outlet 3112 after passing through the filter screen 312 and the activated carbon plate 313 in sequence, that is, the gas is discharged through the fourth gas outlet 3112 after passing through the first filtering area 3121, the third filtering area 3131 and the fourth filtering area 3132 in sequence in the first collecting tank 311.
Referring to fig. 5, when the operation of the furnace body 1 is in the second stage, the exhaust device 3 further includes a second exhaust gas treatment component 34 and a gas generator 35, the second exhaust gas treatment component 34 includes a second collecting box 341, a fifth air inlet 3411 is provided at a top wall of the second collecting box 341, a fifth air outlet 3412 is provided at a bottom end of a side wall of the second collecting box, the fifth air inlet 3411 is communicated with the third air outlet 213 of the vacuum pump 21, air enters the fifth air inlet 3411 from the third air outlet 213, further enters the second collecting box 341, and is discharged from the fifth air outlet 3412, the air discharged from the fifth air outlet 3412 is introduced into the gas generator 35 for generating electricity, an electric outlet port is provided on the gas generator 35, an electric inlet port is provided on the furnace body 1, the electric outlet port is electrically connected with the electric inlet port of the gas generator 35, and the electric current enters the electric inlet port of the furnace body 1 from the electric outlet port of the gas generator 35 for supplying power to the heating process of the furnace body 1, and a second fan 32 is fixedly connected to the inner wall of the fifth air outlet 3412 for conveying the air from the fifth air outlet 3412 to the gas generator 35.
Referring to fig. 5 and 6, because the tail gas contains methane, hydrogen and other gases, and tar, particulate matters and other macromolecular solid impurities, the tail gas needs to be further processed to avoid the situation that the gas generator 35 is damaged or exploded due to the fact that the impurities enter the gas generator 35, and therefore, the second tail gas processing assembly 34 further comprises a spray head 342 and a first filter plate 343, in this embodiment, the spray head 342 is a water spraying spray head, the water inlet end of the spray head 342 is communicated with a water source through the water inlet pipe 37, the water outlet end of the spray head 342 is located in the inner cavity of the second collecting box 341, the water spraying direction of the spray head 342 is vertical, and after the gas enters the second collecting box 341 downwards through the fifth air inlet 3411, the water flow can settle macromolecular solid impurities in the tail gas; the outer peripheral wall of the first filter plate 343 is attached to the inner peripheral wall of the second collecting box 341, the first filter plate 343 is located below the spray head 342, the first filter plate 343 is arranged in the second collecting box 341 from the first side wall 3413 to the second side wall 3414 in an upward inclined mode, a plurality of first filter holes 3431 are formed in the first filter plate 343 in a penetrating mode in the vertical direction, when water flows downwards to the first filter plate 343, part of water flows downwards through the first filter holes 3431 on the first filter plate 343 directly, and after a certain distance is reserved along the first filter plate 343, part of water flows downwards through the first filter holes 3431.
Referring to fig. 6, in order to re-filter the small molecular impurities in the tail gas, the second exhaust assembly further includes a second filter plate 344, wherein an outer peripheral wall of the second filter plate 344 is attached to an inner peripheral wall of the second collecting tank 341 and is located below the first filter plate 343, the second filter plate 344 is disposed in the second collecting tank 341 in a downward inclined manner from the first side wall 3413 to the second side wall 3414, a plurality of second filter holes 3441 are formed in the second filter plate 344 in a penetrating manner along a vertical direction, and the aperture of the second filter holes 3441 is smaller than that of the first filter holes 3431, so as to re-filter the small molecular impurities in the tail gas, when the water flows down to the first filter plate 343, a part of the water directly flows down through the second filter holes 3441 on the second filter plate 344, and after a part of the water flows down along the second filter plate 344 for a distance, the water flows down through the second filter holes 3441.
Referring to fig. 6, the gas and water flowing into the second collecting tank 341 sequentially pass through the first filter plate 343 and the second filter plate 344, in order to discharge the gas after multiple filtration, the fifth gas outlet 3412 of the second collecting tank 341 is disposed below the second filter plate 344, the gas after multiple filtration is discharged from the fifth gas outlet 3412, the water flowing after multiple filtration of the gas is collected at the bottom wall of the second collecting tank 341, at this time, the water flowing contains part of impurities in the tail gas, and part of impurities still adhere to the second filter holes 3441 of the second filter plate 344.
Referring to fig. 7, in order to flush the second filter holes 3441 in the second filter plate 344, a flushing groove 3442 is further formed in the second filter plate 344, the flushing groove 3442 is arranged obliquely downwards from the first side wall 3413 to the second side wall 3414, and the flushing groove 3442 is communicated with the second filter holes 3441, in addition, in order to improve the flushing effect, a plurality of flushing grooves 3442 are distributed in the horizontal direction, in order to facilitate water flow entering each flushing groove 3442, a first communicating groove 3443 is formed at one end, close to the first side wall 3413, of the second filter plate 344, one end, close to the first side wall 3413, of each flushing groove 3442 is communicated with the first communicating groove 3443, in order to enable water at the bottom wall of the second collecting groove 341 to flow into the second filter holes 3441, the tail gas generating system of the deposition furnace further comprises a water pumping device 4, the water pumping device 4 comprises a first water pumping assembly 41, the first water pumping pipe 411 and a first water pumping pump 412, the water inlet end 341 of the first water pumping pipe 411 is communicated with the bottom wall of the second collecting groove 3442, and after the water flow enters the first communicating groove 34411, and after the water flow enters the first communicating groove 3443, and the water flow enters the first communicating groove 34411 through the first communicating groove 3443, and the water inlet end of the first water pumping 411 is further communicated with the first communicating groove 3443; to ensure adequate flushing force for the second filter holes 3441, the first water pump 412 is a high pressure water pump.
Referring to fig. 8, water flows into the second filter plate 344, the water flows through the flushing tank 3442 to one end of the second filter plate 344, which is close to the second side wall 3414, in order to store the water, one end of the second filter plate 344, which is close to the second side wall 3414, is provided with a second communicating tank 3444, one end of each flushing tank 3442, which is close to the second side wall 3414, is communicated with the second communicating tank 3444, the water flows from the flushing tank 3442 into the second communicating tank 3444, in order to filter the water in the second communicating tank 3444, the filter assembly 5 further comprises a filter assembly 5, the filter assembly 5 comprises a fixed frame 51 and a water filter membrane 52, the fixed frame 51 is horizontally welded on the inner wall of the second communicating tank 3444, the outer peripheral wall of the fixed frame 51 is attached to the inner peripheral wall of the second communicating tank 3444, the edge of the water filter membrane 52 is fixedly connected to the fixed frame 51, so that the second communicating tank 3444 is divided into an upper water storage area and a lower water storage area by the water filter membrane 52, the fixed frame 51 is positioned above the second communicating tank 3442 and the second communicating tank 3444, and in order to filter membrane 52 is more closely connected with the lower water membrane 52, and the filter membrane 52 is positioned at the lower area of the lower than the filter membrane 52, and the filter membrane 52 is in the lower than the filter membrane 52 is fixed in the filter assembly 52, and the filter assembly is in the filter assembly 52, and is in a certain size, when the filter assembly is in a certain filter tank and is in a filter tank; the water flows from the flushing tank 3442 into the second communicating tank 3444 to contact with the water filter film 52 under the action of the high-pressure water pump, so that impurities in the water are filtered by the water filter film 52, and at this time, the filtered water is above the water filter film 52.
Referring to fig. 9 and 10, in order to discharge the filtered water, the pumping device 4 further includes a second pumping assembly 42, the second pumping assembly 42 includes a second pumping pipe 421, a second pumping pump 422, a flexible pipe 423 and a hard pipe 424, a water inlet end of the second pumping pipe 421 is penetrated through the second sidewall 3414 and is communicated with the second communicating groove 3444, a water outlet end is communicated with the water inlet pipe 37, the second pumping pump 422 is fixedly communicated with the second pumping pipe 421, so that the water flow in the second communicating groove 3444 is delivered to the spray head 342 through the second pumping pipe 421 by the second pumping pump 422; one end of the flexible pipe 423 is communicated with the second water pumping pipe 421, the other end of the flexible pipe 423 is communicated with the hard pipe 424, the hard pipe 424 is lapped on the water filtering film 51, and the hard pipe 424 is preferably made of iron, so that the hard pipe 424 has enough gravity to press the water filtering film 51 downwards.
Referring to fig. 10, since the second communicating groove 3444 has excessive impurities after a period of use, in order to discharge the impurities, a discharge port 3445 is provided on the second side wall 3414, a blocking bolt 425 is screwed to the discharge port 3445, and the discharge port is located below the communicating position between the flushing groove 3442 and the second communicating groove 3444.
Referring to fig. 11, in order to communicate the furnace body 1, the vacuum pump 21, the first exhaust gas treatment assembly 31, the chimney 33, and in order to communicate the furnace body 1, the vacuum pump 21, the second exhaust gas treatment assembly 34, and the gas generator 35, a deposition furnace exhaust gas power generation system further includes a gas transmission assembly 6, the gas transmission assembly 6 including a first gas main 61, a plurality of first gas distribution pipes 62, a second gas main 63, a plurality of second gas distribution pipes 64, a third gas main 65, a plurality of third gas distribution pipes 66, and a fourth gas main 67.
Referring to fig. 11, the air inlet end of the first air manifold 61 is communicated with the first air outlet 12 of the furnace body 1, the air inlet ends of the plurality of first air distribution pipes 62 are all communicated with the air outlet end of the first air manifold 61, and the air outlet end of each first air distribution pipe 62 is respectively communicated with the second air inlet 211 of one vacuum pump 21.
Referring to fig. 11, the air inlet ends of the plurality of second air distribution pipes 64 are respectively communicated with the second air outlet 212 of one vacuum pump 21, the air outlet ends are all communicated with the second air distribution pipe 63, the air outlet ends of the second air distribution pipe 63 are communicated with the first collecting box 311, and a first valve 631 is installed on the second air distribution pipe 63 to control the on-off of the air entering the first collecting box 311.
Referring to fig. 11, the air inlet ends of the plurality of third air distribution pipes 66 are respectively communicated with the third air outlet 213 of one vacuum pump 21, the air outlet ends are all communicated with the third main air pipe 65, the air outlet ends of the third main air pipe 65 are communicated with the fifth air inlet 3411 of the second collecting box 341, and a second valve 651 is installed on the third main air pipe 65 to control the on-off of the air entering the second collecting box 341; in order to control the air entering the third main air duct 65, a third valve 661 is mounted on each third air distribution duct 66.
Referring to fig. 11, in order to detect the oxygen content in the furnace body 1, so as to prevent the explosion of the furnace body 1 caused by the exceeding of the oxygen content, an oxygen concentration tester 652 is installed on the third main air pipe 65, and in addition, air pressure is generated after the air flow enters the first main air pipe 61, and the exceeding of the pressure content also causes the explosion, so that a pressure sensor 653 is also installed on the third main air pipe 65, and the communication position of each third air distribution pipe 66 and the third main air pipe 65 is located at the air flow transmission upstream of the oxygen concentration tester 652 and the pressure sensor 653.
Referring to fig. 11, the air inlet end of the fourth air pipe 67 is connected to the third air pipe 66, the air outlet end is connected to the second air pipe 63, and the air inlet end of the fourth air pipe 67 is located upstream of the air flow transmission of the oxygen concentration tester 652 and the pressure sensor 653, and the air inlet end is located downstream of the air flow transmission where each third air pipe 66 and the third air pipe 65 are connected; the air outlet end of the fourth main air pipe 67 is positioned at the air flow conveying downstream of the first valve 631, the fourth valve 671 is arranged on the fourth main air pipe 67, when the oxygen content or the pressure of the air entering the third main air pipe 65 exceeds the standard, the second valve 651 is closed, the fourth valve 671 is opened, and the air enters the second main air pipe 63 for emergency discharge.
The application also discloses a method for treating the tail gas of the deposition furnace, which specifically comprises the following steps:
Before the carbon fiber preform reacts in the furnace body 1, the furnace body 1 is in a vacuum state, a second air inlet 211 of the vacuum pump 21 is communicated with a first air outlet 12 of the furnace body 1 through a first air main pipe 61, a second air outlet 212 of the vacuum pump 21 is communicated with a fourth air inlet 3111 of the first collecting box 311 through a second air main pipe 63, when the carbon fiber preform is vacuumized, a first valve 631 is opened, and air in the furnace body 1 is sequentially discharged from the furnace body 1 through a first tail gas treatment assembly 31, a first fan 32 and a chimney 33;
Since the air contains impurities, in order to filter the impurities, the air enters the first collection tank 311 of the first exhaust gas treatment assembly 31, the impurities in the gas are filtered by the filter screen 312 and the activated carbon plate 313 in sequence, and then discharged by the fourth air outlet 3112 of the first collection tank 311.
When the carbon fiber preform performs a high-temperature reaction in the furnace body 1, tail gas is generated, a third air outlet 213 of the vacuum pump 21 is communicated with an air inlet port of the gas generator 35 through a third main air pipe 65, so that air flow enters the gas generator 35 from the third main air pipe, and current is output, and enters an electric inlet port of the furnace body 1 from an electric outlet port of the gas generator 35 to supply power for the high-temperature reaction of the furnace body 1;
When the oxygen content or the pressure of the tail gas in the third main air pipe 65 exceeds the standard, the pipeline explosion is caused, the air outlet end of the fourth main air pipe 67 is communicated with the third main air pipe 65, the air outlet end is communicated with the second main air pipe 63, when the oxygen content or the pressure exceeding the standard is detected by an oxygen concentration detector and a pressure sensor 653 connected with the third main air pipe 65, the second valve 651 is closed, the fourth valve 671 is opened, and the tail gas is sequentially discharged from the third main air pipe 65, the fourth main air pipe 67 and the second main air pipe 63;
Because the tail gas contains methane, hydrogen and other gases and macromolecular solid impurities such as tar and particulate matters, in order to filter the impurities, the second exhaust component is communicated between the vacuum pump 21 and the gas generator 35 through the third main air pipe 65, the gas enters the second collecting box 341 of the second exhaust component, the water is sprayed by the spray head 342 in the second collecting box 341, meanwhile, the gas is introduced into the second collecting box 341 through the fifth air inlet 3411, the gas is filtered through the first filter plate 343 and the second filter plate 344 in sequence, the filtered gas is discharged from the fifth air outlet 3412 of the second collecting box 341, and the gas further enters the gas generator 35 through the second fan 36.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (6)
1. A deposition furnace tail gas power generation system is characterized in that: comprises a furnace body (1) and an exhaust device (3), wherein the exhaust device (3) comprises a second tail gas treatment component (34);
the furnace body (1) is provided with a first air inlet (11) and a first air outlet (12);
the second tail gas treatment assembly (34) comprises a gas generator (35), and the gas inlet end of the gas generator (35) is communicated with the first gas outlet (12);
An electric inlet port is arranged on the furnace body (1), an electric outlet port is arranged on the gas generator (35), and the electric outlet port is electrically communicated with the electric inlet port;
the gas transmission assembly (6) is further included, and the gas transmission assembly (6) comprises a second total gas pipe (63) and a third total gas pipe (65);
the air inlet end of the second main air pipe (63) is communicated with the first air outlet (12);
the air inlet end of the third main air pipe (65) is communicated with the first air outlet (12);
A first valve (631) is arranged on the second main air pipe (63), and a second valve (651) is arranged on the third main air pipe (65);
The second tail gas treatment assembly (34) further comprises a second collecting box (341) and a spray head (342), a fifth air inlet (3411) and a fifth air outlet (3412) are formed in the second collecting box (341), the air outlet end of the third total air pipe (65) is connected to the second collecting box (341) and communicated with the fifth air inlet (3411), the fifth air inlet (3411) is formed in the top of the second collecting box (341), the fifth air outlet (3412) is formed in the bottom of the side wall of the second collecting box (341), the spray head (342) is located in the second collecting box (341), the water spraying direction of the spray head (342) is downward vertically, filtered air is discharged from the fifth air outlet (3412) of the second collecting box (341), and the air further enters the gas generator (35) through the second fan (36);
The second tail gas treatment assembly (34) further comprises a first filter plate (343), the first filter plate (343) is fixedly connected to the inner wall of the second collecting box (341), the first filter plate (343) is positioned below the spray head (342), and a plurality of first filter holes (3431) are formed in the first filter plate (343) in a penetrating manner along the vertical direction;
The second tail gas treatment assembly (34) further comprises a second filter plate (344), the second filter plate (344) is fixedly connected to the inner wall of the second collecting box (341) and is positioned at one side of the first filter plate (343) away from the spray head (342), a plurality of second filter holes (3441) are formed in the second filter plate (344) in a penetrating manner along the vertical direction, and the aperture of the second filter holes (3441) is smaller than that of the first filter holes (3431);
A flushing groove (3442) is formed in the second filter plate (344), the flushing groove (3442) is obliquely downwards arranged from the first side wall (3413) to the second side wall (3414), the flushing groove (3442) is communicated with the second filter holes (3441), a plurality of flushing grooves (3442) are distributed in the horizontal direction, a first communicating groove (3443) is formed in one end, close to the first side wall (3413), of the second filter plate (344), and one end, close to the first side wall (3413), of each flushing groove (3442) is communicated with the first communicating groove (3443);
A second communication groove (3444) is formed in one end, close to the second side wall (3414), of the second filter plate (344), and one end, close to the second side wall (3414), of each flushing groove (3442) is communicated with the second communication groove (3444);
Still include filter component (5), filter component (5) are including fixed frame (51) and water filter membrane (52), the inner wall of second intercommunication groove (3444) that fixed frame (51) horizontal welding was in, and the laminating of the outer perisporium of fixed frame (51) and the inner perisporium of second intercommunication groove (3444), the edge fixed connection of water filter membrane (52) is in fixed frame (51) to divide into water storage area and lower water storage area with second intercommunication groove (3444) by water filter membrane (52), fixed frame (51) are located the top of rinsing groove (3442) and second intercommunication groove (3444) intercommunication department, the expansion area of water filter membrane (52) is greater than fixed frame (51) inner peripheral area, rivers are under the effect of high-pressure water pump, flow to in second intercommunication groove (3444) and water filter membrane (52) contact by rinsing groove (3442).
2. A deposition furnace tail gas power generation system as claimed in claim 1, wherein: an oxygen concentration tester (652) is arranged on the third main air pipe (65).
3. A deposition furnace tail gas power generation system as claimed in claim 2, wherein: and a pressure sensor (653) is arranged on the third main air pipe (65).
4. A deposition furnace tail gas power generation system as claimed in claim 3, wherein: the gas transmission assembly (6) further comprises a fourth main gas pipe (67), the air inlet end of the fourth main gas pipe (67) is communicated with the third main gas pipe (65), the air outlet end of the fourth main gas pipe (67) is communicated with the second main gas pipe (63), the air inlet end of the fourth main gas pipe (67) is located at the air flow transmission upstream of the second valve (651), and a fourth valve (671) is arranged on the fourth main gas pipe (67).
5. A method for treating tail gas of a deposition furnace, which adopts the power generation system of the tail gas of the deposition furnace as claimed in claim 4, and is characterized in that: the method comprises the following steps:
Introducing tail gas of the furnace body (1) into the gas generator (35), converting heat energy into electric energy by the gas generator (35), and outputting current;
The electric inlet of the furnace body (1) is communicated with the electric outlet of the gas generator (35) so as to enable the current to flow into the furnace body (1).
6. The method for treating tail gas of a deposition furnace according to claim 5, wherein: the method also comprises the following steps:
Tail gas detection:
judging whether the oxygen content in the third total air pipe (65) is higher than a preset value, if so, closing the second valve (651), and opening the fourth valve (671) so that air flows are sequentially discharged from the third total air pipe (65), the fourth total air pipe (67) and the second total air pipe (63);
Judging whether the pressure in the third total air pipe (65) is higher than a preset value, if so, closing the second valve (651), and opening the fourth valve (671) so that air flows are sequentially discharged from the third total air pipe (65), the fourth total air pipe (67) and the second total air pipe (63).
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