CN112344353A - Organic waste gas concentration heat-storage combustion backflow system and method thereof - Google Patents
Organic waste gas concentration heat-storage combustion backflow system and method thereof Download PDFInfo
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- CN112344353A CN112344353A CN201910993044.1A CN201910993044A CN112344353A CN 112344353 A CN112344353 A CN 112344353A CN 201910993044 A CN201910993044 A CN 201910993044A CN 112344353 A CN112344353 A CN 112344353A
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- 239000007789 gas Substances 0.000 title claims abstract description 438
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 146
- 239000010815 organic waste Substances 0.000 title claims abstract description 65
- 238000005338 heat storage Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001179 sorption measurement Methods 0.000 claims abstract description 76
- 238000011084 recovery Methods 0.000 claims abstract description 54
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000002912 waste gas Substances 0.000 claims abstract description 22
- 238000010992 reflux Methods 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims description 115
- 230000001172 regenerating effect Effects 0.000 claims description 104
- 239000000112 cooling gas Substances 0.000 claims description 51
- 238000003795 desorption Methods 0.000 claims description 51
- 238000001816 cooling Methods 0.000 claims description 50
- 238000004891 communication Methods 0.000 claims description 38
- 238000010926 purge Methods 0.000 claims description 35
- 230000002000 scavenging effect Effects 0.000 claims description 35
- 238000004064 recycling Methods 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 10
- 238000009825 accumulation Methods 0.000 claims description 8
- 239000003500 flue dust Substances 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000013461 design Methods 0.000 description 11
- 239000007800 oxidant agent Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- 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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Treating Waste Gases (AREA)
Abstract
A concentration heat-storage combustion reflux system and method for organic waste gas mainly recover or discharge heat-storage gas through different paths, in addition, the exhaust gas of a heat-storage combustion furnace is subjected to heat exchange through a recovery heat exchanger and then conveyed to a waste gas inlet pipeline after the heat exchange, so that the combusted gas enters an adsorption area of an adsorption rotating wheel for cyclic utilization, and is not discharged through a chimney, the discharge amount of the chimney is reduced, the treatment efficiency of the organic waste gas is improved, and meanwhile, the heat-storage gas of a heating chamber of the heat-storage combustion furnace is stripped and supplied to a heater for use.
Description
Technical Field
The present invention relates to a system and a method for concentrating, storing and combusting organic waste gas, and more particularly, to a system and a method for concentrating, storing and combusting organic waste gas, which can recover or discharge stored heat gas through different paths to improve the processing efficiency of organic waste gas, and can supply the stored heat gas from a heating chamber of a heat storage combustion furnace to a heater for use, thereby being suitable for an organic waste gas processing system or the like in the semiconductor industry, the photoelectric industry or the chemical industry.
Background
At present, volatile organic gases (VOC) are generated in the manufacturing process of semiconductor industry or photoelectric industry, so that processing equipment for processing the VOC is installed in each factory to prevent the VOC from being directly discharged into the air to cause air pollution. At present, most of the concentrated gas desorbed by the treatment equipment is delivered to the incinerator for combustion, and the combusted gas is delivered to a chimney for emission.
Therefore, in view of the above-mentioned shortcomings, the present inventors have proposed an organic waste gas concentrated heat-accumulating combustion recirculation system and method thereof capable of improving the efficiency of organic waste gas treatment, so that the user can easily operate and assemble the system, and therefore, the present inventors have made extensive research and design efforts to provide convenience for the user.
Disclosure of Invention
The main object of the present invention is to provide a system and method for concentrating, storing and combusting organic waste gas, wherein the stored heat gas is recycled or discharged through different paths, and the exhaust gas of the heat storage combustion furnace is heat-exchanged through the recycling heat exchanger and then delivered to the waste gas inlet pipeline after heat exchange, so that the combusted gas enters the adsorption region of the adsorption rotating wheel for recycling, and is not discharged through the chimney, thereby reducing the discharge amount of the chimney and improving the treatment efficiency of the organic waste gas, and the stored heat gas of the heating chamber of the heat storage combustion furnace is provided to the heater for use, thereby increasing the overall practicability.
Another objective of the present invention is to provide a backflow system and method for organic waste gas concentrated heat-storage combustion, wherein the heater can be connected to a hot gas output pipeline, and the other end of the hot gas output pipeline is connected to the backflow hot gas recovery pipeline, so that the hot gas conveyed through the hot gas output pipeline is conveyed into the backflow hot gas recovery pipeline and then conveyed into the backflow heat exchanger.
Still another object of the present invention is to provide an organic waste gas concentrated heat-accumulating combustion recirculation system and method thereof, wherein when the heat-accumulating combustion furnace is a tri-tower heat-accumulating combustion furnace or a rotary heat-accumulating combustion furnace, at least one scavenging (purge) pipeline is provided, and the other end of the scavenging (purge) pipeline is used for fresh air to enter or is connected to the other end of a hot gas recycling pipeline connected to the heater, so that the hot gas conveyed through the hot gas recycling pipeline is conveyed into the scavenging (purge) pipeline and then returned to the tri-tower heat-accumulating combustion furnace or the rotary heat-accumulating combustion furnace through the scavenging (purge) pipeline for combustion, thereby increasing the overall operability.
For a better understanding of the nature, features and aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings which are provided for purposes of illustration and description only and are not intended to be limiting.
Drawings
FIG. 1 is a flow chart of the main steps of a main embodiment of the present invention;
FIG. 2 is a schematic view of the hot gas output pipeline connection structure of the heater of the two-tower regenerative combustion furnace according to the present invention;
FIG. 3 is a schematic view of the hot gas exhaust line connection structure of the heater of the two-tower regenerative furnace according to the present invention;
FIG. 4 is a schematic view of the structure of a two-tower regenerative furnace according to another embodiment of the present invention;
FIG. 5 is a schematic view of the hot gas output pipeline connection structure of the heater of the three-tower regenerative burner of the present invention;
FIG. 6 is a schematic view of the hot gas discharge line connection structure of the heater of the three-tower regenerative furnace according to the present invention;
FIG. 7 is a schematic view of the hot gas delivery piping connection structure of the heater of the triple-tower regenerative burner of the present invention;
FIG. 8 is a schematic view of the hot gas output line connection structure of the heater of the rotary regenerative furnace according to the present invention;
FIG. 9 is a schematic view of the hot gas exhaust line connection structure of the heater of the rotary regenerative furnace according to the present invention;
fig. 10 is a schematic view of the hot gas supply line connection structure of the heater of the rotary regenerative furnace according to the present invention.
Description of reference numerals:
A. one side B and the other side
10. Regenerative combustion furnace 101 and regenerative bed
11. Heating chamber 111, hot air outlet
12. Air inlet pipeline 13 and air outlet pipeline
14. Scavenging (Purge) line 20, adsorption runner
201. Adsorption zone 202, cooling zone
203. Desorption zone 21, waste gas inlet line
22. Clean gas discharge pipeline 221 and windmill
222. Clean gas bypass pipeline 2221 and clean gas bypass control valve
23. Cooling gas inlet line 231, gas bypass line
24. Cooling gas delivery pipe 241, cooling gas control valve
25. Hot gas conveying pipeline 251 and hot gas control valve
26. Desorption concentrated waste gas pipeline 261 and windmill
27. Communication pipeline 271 and communication control valve
30. Heater 31 and heat storage gas recovery pipeline
321. Hot gas output pipeline 322 and hot gas discharge pipeline
323. Hot gas delivery line 40, return heat exchanger
401. Return cold side piping 402, and return hot side piping
41. Return hot gas recovery line 42 and return recovery line
421. Windmill 60 and dust removing device
70. Chimney 71, chimney exhaust line
711. Windmill
S100, adsorption S110 in adsorption zone, and cooling in cooling zone
S120, desorption S130 in desorption area, and heat storage gas conveying
S140, recovering and conveying the exhaust gas S150 through a return recovery pipeline
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
Referring to fig. 1 to 10, which are schematic views illustrating an embodiment of the present invention, a preferred embodiment of the organic waste gas concentrating, heat-storing, and burning backflow system and method of the present invention is applied to a volatile organic waste gas treatment system or the like in the semiconductor industry, the photovoltaic industry, or the chemical industry, and is mainly used for recycling or discharging heat-storing gas through different paths to improve the treatment efficiency of organic waste gas, and simultaneously, heat-storing gas in the heating chamber 11 of the heat-storing combustion furnace 10 is supplied to the heater 30 for use.
The organic waste gas concentrated heat-accumulating combustion recirculation system according to the main embodiment of the present invention is mainly provided with a heat-accumulating combustion furnace (RTO)10, an adsorption rotor 20, a heater 30 and a recirculation heat exchanger 40 (as shown in fig. 2 to 10), wherein the heater 30 is connected with a heat accumulation gas recovery pipe 31, the reflux heat exchanger 40 is provided with a reflux cold side pipe 401 and a reflux hot side pipe 402, the heat-returning heat exchanger 40 is connected to a hot-return gas recovery line 41 and a return recovery line 42, and a heat-storage bed 101 is provided in the Regenerative Thermal Oxidizer (RTO)10, and heat is stored and released by the heat-storage bed 101, the Regenerative Thermal Oxidizer (RTO)10 has a heating chamber 11, at least one air inlet pipe 12 and at least one air outlet pipe 13, and the heating chamber 11 has a hot air outlet 111. In addition, the group of heating chambers 11 of the Regenerative Thermal Oxidizer (RTO)10 is provided with a burner (as shown in fig. 2 to fig. 10), and the burner burns by fuel gas or fuel liquid and transfers hot gas during combustion to the heating chamber 11 of the Regenerative Thermal Oxidizer (RTO)10 for use, and the burner is provided with an air pipeline, and the air pipeline is provided with a fan, so that air in the air pipeline is pushed into the burner by the fan to help the combustion temperature to increase.
The adsorption rotor 20 is a zeolite concentration rotor or a concentration rotor made of other materials, and the adsorption rotor 20 is provided with an adsorption region 201, a cooling region 202 and a desorption region 203, the adsorption rotor 20 is provided with a waste gas inlet pipeline 21, a clean gas discharge pipeline 22, a cooling gas inlet pipeline 23, a cooling gas delivery pipeline 24, a hot gas delivery pipeline 25 and a desorption concentration waste gas pipeline 26 (as shown in fig. 2 to fig. 10), and the other end of the waste gas inlet pipeline 21 is connected to one side a of the adsorption region 201 of the adsorption rotor 20, so that the adsorption region 201 of the adsorption rotor 20 adsorbs the waste gas in the waste gas inlet pipeline 21, and one end of the clean gas discharge pipeline 22 is connected to the other side B of the adsorption region 201 of the adsorption rotor 20, so that the waste gas is purified by the adsorption region 201 of the adsorption rotor 20 and then is delivered by the clean gas discharge pipeline 22.
In addition, one end of the cooling air inlet pipe 23 is connected to one side a of the cooling area 202 of the sorption rotor 20, and the cooling air inlet pipe 23 has two embodiments, wherein the first embodiment is that the cooling air inlet pipe 23 is used for entering external air (as shown in fig. 2 and 3), and the external air is fresh air, so as to convey the external air into the cooling area 202 of the sorption rotor 20 for cooling, and the second embodiment is that the cooling air inlet pipe 23 is provided with a gas bypass pipe 231 (as shown in fig. 4), one end of the gas bypass pipe 231 is connected to the cooling air inlet pipe 23, and the other end of the gas bypass pipe 231 is connected to the exhaust gas inlet pipe 21, so as to convey part of the exhaust gas into the cooling area 202 of the sorption rotor 20 for cooling through the gas bypass pipe 231.
In addition, one end of the cooling gas conveying pipeline 24 is connected to the other side B of the cooling region 202 of the adsorption rotor 20, and the other end of the cooling gas conveying pipeline 24 is connected to the heater 30 (as shown in fig. 2 to 10) to convey the cooling gas in the cooling gas conveying pipeline 24 into the heater 30 for use, wherein the heater 30 is any one of an air-to-air heat exchanger, a liquid-to-air heat exchanger, an electric heater, and a gas heater, one end of the hot gas conveying pipeline 25 is connected to the other side B of the desorption region 203 of the adsorption rotor 20, the other end of the hot gas conveying pipeline 25 is connected to the heater 30, one side a of the desorption region 203 of the adsorption rotor 20 is connected to one end of the desorption concentrated gas pipeline 26, and the hot gas lifted by the heater 30 is conveyed to the desorption region 203 of the adsorption rotor 20 through the hot gas conveying pipeline 25 for desorption use, and the desorbed concentrated gas desorbed at high temperature is transported through the desorbed concentrated gas pipeline 26, and the other end of the desorbed concentrated gas pipeline 26 is connected to at least one air inlet pipeline 12 of the regenerative combustion furnace 10, so that the desorbed concentrated gas enters the regenerative combustion furnace 10 to be thermally oxidized and destroyed. In addition, the desorption/concentration gas line 26 is provided with a wind turbine 261 (shown in fig. 4) for pumping the desorption/concentration gas in the desorption/concentration gas line 26.
In addition, a proportional damper (as shown in fig. 3 and 4) is provided between the cooling gas delivery pipeline 24 and the hot gas delivery pipeline 25, and the proportional damper is provided with two implementation designs, wherein the first implementation design is to provide a communication pipeline 27 between the cooling gas delivery pipeline 24 and the hot gas delivery pipeline 25, and the communication pipeline 27 is provided with a communication control valve 271, the hot gas delivery pipeline 25 is provided with a hot gas control valve 251 (as shown in fig. 3), and the proportional damper is formed by the communication control valve 271 and the hot gas control valve 251, and the second implementation design is to provide a communication pipeline 27 between the cooling gas delivery pipeline 24 and the hot gas delivery pipeline 25, and the communication pipeline 27 is provided with a communication control valve 271, and the cooling gas delivery pipeline 24 is provided with a cooling control valve 241 (as shown in fig. 4), and the proportional damper is formed by the communication control valve 271 and the cooling control valve 241, therefore, the air flow can be controlled by adjusting the design of the communication control valve 271 and the hot air control valve 25 or the design of the communication control valve 271 and the cooling control valve 241, so that the temperature in the hot air delivery pipeline 25 can be kept at a certain high temperature for the desorption region 203 of the adsorption rotor 20.
In addition, a hot gas recycling line 31 is connected to the heater 30, and the other end of the hot gas recycling line 31 is connected to a hot gas outlet 111 of the heating chamber 11 of the regenerative burner 10 (as shown in fig. 2 to 10), so that the hot gas in the heating chamber 11 of the regenerative burner 10 enters the hot gas recycling line 31 through the hot gas outlet 111, and then is transported to the heater 30 for use through the hot gas recycling line 31.
In addition, the heat-returning heat exchanger 40 is connected to a hot-returning gas recycling pipeline 41 and a hot-returning gas recycling pipeline 42, one end of the cold-returning pipeline 401 of the heat-returning heat exchanger 40 is connected to the other end of the clean gas discharging pipeline 22, one end of the hot-returning pipeline 41 is connected to one end of the hot-returning pipeline 402 of the heat-returning heat exchanger 40, the other end of the hot-returning pipeline 41 is connected to the gas outlet pipeline 13 of the regenerative combustion furnace 10, one end of the hot-returning pipeline 42 is connected to the other end of the hot-returning pipeline 402 of the heat-returning heat exchanger 40, and the other end of the hot-returning pipeline 42 is connected to the exhaust gas inlet pipeline 21 (see fig. 2 to fig. 10). Furthermore, the hot gas return line 41 and the hot gas return line 42 of the heat-return exchanger 40 can be provided with a dust-removing device 60 (as shown in fig. 7), or a dust-removing device 60 is provided only on the hot gas return line 42 of the heat-return exchanger 40 (as shown in fig. 6), or a dust-removing device 60 is provided only on the hot gas return line 41 of the heat-return exchanger 40 (as shown in fig. 4), so that the gas passing through the hot gas return line 41 or the gas passing through the hot gas return line 42 can be filtered by the dust-removing device 60, wherein the dust-removing device 60 is a bag filter, an electric bag filter, an inertial filter, an electrostatic filter, a centrifugal filter, a cartridge filter, a pulse bag filter, a pulse filter cartridge filter, or a pulse filter cartridge filter, The pulse blowing bag type dust collector, the wet type electric dust collector, the wet type electrostatic dust collector, the water film dust collector, the venturi tube dust collector, the cyclone separator, the flue dust collector, the multilayer dust collector, the negative pressure blowback filter bag dust collector, the low pressure long bag pulse dust collector, the horizontal type electrostatic dust collector, the unpowered dust collector, the charged water mist dust collector, the multi-tube cyclone dust collector, the explosion-proof dust collector, and the backflow recovery pipeline 42 of the backflow heat exchanger 40 is provided with a windmill 421 (as shown in fig. 4) to push the gas in the backflow recovery pipeline 42 into the waste gas inlet pipeline 21. Therefore, the gas burned in the regenerative thermal combustion furnace 10 is transported to the return hot side pipeline 402 of the return heat exchanger 40 through the return hot gas recovery pipeline 41 for heat exchange, then transported into the dust removing device 60 through the return recovery pipeline 42 for separation of oxides such as dust and silica (SiO2), and finally transported to the exhaust gas intake pipeline 21 through the gas output from the dust removing device 60, so that the burned gas enters the adsorption region 201 of the adsorption rotating wheel 20 for recycling, and is discharged without passing through the chimney 70, thereby reducing the discharge amount of the chimney 70 and improving the treatment efficiency of the organic exhaust gas.
The heat exchanger 40 is connected to a chimney 70, the chimney 70 is provided with a chimney discharge pipe 71 (as shown in fig. 2 to 4), one end of the chimney discharge pipe 71 is connected to the chimney 70, the other end of the chimney discharge pipe 71 is connected to the other end of the return cold-side pipe 401 of the heat exchanger 40, the purified gas discharged through the clean gas discharge pipe 22 enters the return cold-side pipe 401 of the heat exchanger 40 for heat exchange, and is then transported to the chimney 70 through the chimney discharge pipe 71 for discharge, and the chimney discharge pipe 71 is provided with a windmill 711 (as shown in fig. 4) for pushing the gas in the chimney discharge pipe 71 into the chimney 70. The net gas discharge pipe 22 is provided with a windmill 221 (shown in fig. 3 and 4) to push the gas in the net gas discharge pipe 22 toward the return cold-side pipe 401 of the return heat exchanger 40. A purified gas bypass line 222 (as shown in fig. 3 and 4) is disposed beside the purified gas discharge line 22, one end of the purified gas bypass line 222 is connected to the purified gas discharge line 22, and the other end of the purified gas bypass line 222 is connected to the chimney discharge line 71, so that when the purified gas discharged from the purified gas discharge line 22 is transported, the purified gas enters the reflux cold-side line 401 of the reflux heat exchanger 40 for heat exchange, and is bypassed by the purified gas bypass line 222 connected to the purified gas discharge line 22, so that a part of the purified gas directly flows to the chimney discharge line 71 and is discharged through the chimney 70. In addition, the net gas bypass line 222 is provided with a net gas bypass control valve 2221 (as shown in fig. 4), so as to adjust the air volume of the purified gas delivered from the net gas discharge line 22 through the net gas bypass control valve 2221, thereby achieving the adjusting and controlling effect.
The regenerative thermal combustion furnace 10 is any one of a two-tower regenerative combustion furnace (as shown in fig. 2 to 4), a three-tower regenerative combustion furnace (as shown in fig. 5 to 7) or a rotary regenerative combustion furnace (as shown in fig. 8 to 10), and the heater 30 has three connection paths, wherein the first path is that when the regenerative thermal combustion furnace 10 is a two-tower regenerative combustion furnace, a three-tower regenerative combustion furnace or a rotary regenerative combustion furnace, the heater 30 is connected to a hot gas output pipeline 321 (as shown in fig. 2, 5 and 8), the other end of the hot gas output pipeline 321 is connected to the returned hot gas recovery pipeline 41, so that the hot gas output from the hot gas outlet 111 is conveyed into the heater 30 for use through the hot gas recovery pipeline 31 and then conveyed into the returned hot gas recovery pipeline 41 through the hot gas conveying pipeline 321, the heat-accumulating gas is introduced into the hot gas return line 41 and is delivered to the heat-return exchanger 40, so that the heat-accumulating gas can be recycled.
In the second path, when the regenerative thermal combustion furnace 10 is a two-tower regenerative thermal combustion furnace, a three-tower regenerative thermal combustion furnace or a rotary regenerative thermal combustion furnace, the heater 30 is connected to a hot gas discharge pipeline 322 (as shown in fig. 3, 6 and 9), and the other end of the hot gas discharge pipeline 322 is connected to a chimney 70, so that the regenerative gas output from the hot gas outlet 111 is conveyed to the heater 30 for use through the regenerative gas recovery pipeline 31, and then conveyed to the chimney 70 for discharge through the hot gas discharge pipeline 322, so that the regenerative gas is discharged to the atmosphere through the chimney 70.
In addition, when the regenerative combustion furnace 10 is a three-tower regenerative combustion furnace or a rotary regenerative combustion furnace, at least one scavenging (purge) line 14 is provided, the heater 30 is connected to a hot gas delivery line 323 (as shown in fig. 7 and 10), the other end of the hot gas delivery line 323 is connected to the other end of the scavenging (purge) line 14, so that the regenerative gas output from the hot gas outlet 111 is delivered into the heater 30 through the regenerative gas recycling line 31 for use, and then delivered into the scavenging (purge) line 14 through the hot gas delivery line 323, so that the regenerative gas is re-introduced into the regenerative combustion furnace 10 through the scavenging (purge) line 14, thereby achieving the recycling effect.
In addition, when the regenerative combustion furnace 10 is a three-tower regenerative combustion furnace or a rotary regenerative combustion furnace in the 1 st path and the 2 nd path, the regenerative combustion furnace 10 is provided with at least one scavenging (purge) line 14, and the other end of the scavenging (purge) line 14 is used for introducing fresh air (as shown in fig. 5, 6, 8 and 9), so that the scavenging (purge) line 14 is used for introducing fresh air from the outside.
In addition, the regenerative combustion recirculation method of organic waste gas according to the main embodiment of the present invention is mainly used in the organic waste gas treatment system, which includes a regenerative combustion furnace (RTO)10, an adsorption rotor 20, a heater 30 and a recirculation heat exchanger 40 (as shown in fig. 2 to 10), wherein the adsorption rotor 20 is provided with an adsorption zone 201, a desorption zone 202 and a cooling zone 203, the adsorption rotor 20 is connected with a waste gas inlet pipeline 21, a clean gas discharge pipeline 22, a cooling gas inlet pipeline 23, a cooling gas delivery pipeline 24, a hot gas delivery pipeline 25 and a desorption concentrated gas pipeline 26, the heater 30 is connected with a heat accumulation gas recovery pipe 31, the return heat exchanger 40 is provided with a return cold side pipe 401 and a return hot side pipe 402, the reflux heat exchanger 40 is connected to a reflux hot gas recovery line 41 and a reflux recovery line 42.
In addition, the Regenerative Thermal Oxidizer (RTO)10 is provided with a regenerative bed 101, and the Regenerative Thermal Oxidizer (RTO) 101 is used for storing and releasing heat to recover the heat energy of the high-temperature exhaust gas for preheating the low-temperature intake gas, and the Regenerative Thermal Oxidizer (RTO)10 is provided with a heating chamber 11, at least one intake pipe 12 and at least one exhaust pipe 13 (as shown in fig. 2 to 10), and the heating chamber 11 is provided with a hot gas outlet 111. The heating chamber 11 of the Regenerative Thermal Oxidizer (RTO)10 is provided with a burner, the burner burns by fuel gas or fuel liquid, and transfers hot gas during burning to the heating chamber 11 of the Regenerative Thermal Oxidizer (RTO)10 for use, furthermore, the burner is provided with an air pipeline, and the air pipeline is provided with a fan, air in the air pipeline is pushed into the burner by the fan to help the combustion temperature to increase.
The main steps (as shown in fig. 1) of the regenerative combustion backflow method for organic waste gas include: step S100 adsorption in adsorption zone: the exhaust gas is fed to one side a of the adsorption region 201 of the adsorption rotor 20 through the other end of the exhaust gas inlet line 21 to be adsorbed, and the adsorbed gas is then fed to one end of the return cold-side line 401 of the return heat exchanger 40 through the other end of the net gas discharge line 22. After the step S100 is completed, the next step S110 is performed.
In the step S100, the heat-returning exchanger 40 is connected to a chimney 70, the chimney 70 is provided with a chimney discharge pipe 71 (as shown in fig. 2 to 4), one end of the chimney discharge pipe 71 is connected to the chimney 70, the other end of the chimney discharge pipe 71 is connected to the other end of the return cold-side pipe 401 of the heat-returning exchanger 40, so that the purified gas discharged through the clean gas discharge pipe 22 enters the return cold-side pipe 401 of the heat-returning exchanger 40 for heat exchange, and is then transported to the chimney 70 through the chimney discharge pipe 71 for discharge, and the chimney discharge pipe 71 is provided with a windmill 711 (as shown in fig. 4) for pushing the gas in the chimney discharge pipe 71 into the chimney 70. The net gas discharge pipe 22 is provided with a windmill 221 (shown in fig. 3 and 4) to push the gas in the net gas discharge pipe 22 toward the return cold-side pipe 401 of the return heat exchanger 40. A purified gas bypass line 222 (as shown in fig. 3 and 4) is disposed beside the purified gas discharge line 22, one end of the purified gas bypass line 222 is connected to the purified gas discharge line 22, and the other end of the purified gas bypass line 222 is connected to the chimney discharge line 71, so that when the purified gas discharged from the purified gas discharge line 22 is transported, the purified gas enters the reflux cold-side line 401 of the reflux heat exchanger 40 for heat exchange, and is bypassed by the purified gas bypass line 222 connected to the purified gas discharge line 22, so that a part of the purified gas directly flows to the chimney discharge line 71 and is discharged through the chimney 70. The net gas bypass line 222 is further provided with a net gas bypass control valve 2221 (as shown in fig. 4), so as to adjust the air volume of the purified gas delivered from the net gas discharge line 22 through the net gas bypass control valve 2221, thereby achieving the adjusting and controlling effect.
In addition, the next step S110 cooling zone cooling: the cooling gas is supplied to the cooling zone 202 of the adsorption rotor 20 through the other end of the cooling gas inlet line 23 to be cooled, and the cooling gas passing through the cooling zone 202 is supplied to the heater 30 through the other end of the cooling gas supply line 24. After the step S110 is completed, the next step S120 is performed.
Wherein one end of the cooling air inlet line 23 is connected to one side a of the cooling zone 202 of the sorption rotor 20 in the above-mentioned step S110, and the cooling air inlet line 23 has two embodiments, in the first embodiment, the cooling air inlet line 23 is used for introducing external air (as shown in figures 2 and 3), the outside air is fresh air to be delivered to the cooling zone 202 of the sorption rotor 20 for cooling, and in the second embodiment, the cooling air inlet pipe 23 is provided with a gas bypass pipe 231 (as shown in fig. 4), one end of the gas bypass line 231 is connected to the cooling gas inlet line 23, and the other end of the gas bypass line 231 is connected to the exhaust gas inlet line 21, part of the exhaust gas is delivered to the cooling zone 202 of the sorption rotor 20 for temperature reduction through the gas bypass line 231.
In addition, one end of the cooling gas conveying pipeline 24 is connected to the other side B of the cooling region 202 of the adsorption rotor 20, the other end of the cooling gas conveying pipeline 24 is connected to the heater 30 (as shown in fig. 2 to 10) to convey the cooling gas in the cooling gas conveying pipeline 24 into the heater 30 for use, wherein the heater 30 is any one of an air-to-air heat exchanger, a liquid-to-air heat exchanger, an electric heater and a gas heater, in addition, one end of the hot gas conveying pipeline 25 is connected to the other side B of the desorption region 203 of the adsorption rotor 20, the other end of the hot gas conveying pipeline 25 is connected to the heater 30, one side a of the desorption region 203 of the adsorption rotor 20 is connected to one end of the desorption concentrated gas pipeline 26, so that the hot gas lifted by the heater 30 is conveyed to the desorption region 203 of the adsorption rotor 20 through the hot gas conveying pipeline 25 for desorption use, and the desorbed concentrated gas desorbed at high temperature is transported through the desorbed concentrated gas pipeline 26, and the other end of the desorbed concentrated gas pipeline 26 is connected to at least one air inlet pipeline 12 of the regenerative combustion furnace 10, so that the desorbed concentrated gas enters the regenerative combustion furnace 10 to be thermally oxidized and destroyed. The desorption/concentration gas pipeline 26 is provided with a windmill 261 (as shown in fig. 4) for pumping the desorption/concentration gas in the desorption/concentration gas pipeline 26.
In addition, the next step is to perform desorption in the desorption zone of step S120: hot gas is conveyed to the desorption region 203 of the adsorption rotor 20 for desorption through the hot gas conveying pipeline 24 connected with the heater 30, and then the desorption concentrated gas is conveyed to at least one air inlet pipeline 12 of the regenerative burner 10 through the other end of the desorption concentrated gas pipeline 26. After the step S120 is completed, the next step S130 is performed.
In the step S120, the desorption/concentration gas pipeline 26 is provided with a windmill 261 for pumping the desorption/concentration gas in the desorption/concentration gas pipeline 26. In addition, a proportional damper (as shown in fig. 3 and 4) is provided between the cooling gas delivery pipeline 24 and the hot gas delivery pipeline 25, and the proportional damper is provided with two implementation designs, wherein the first implementation design is to provide a communication pipeline 27 between the cooling gas delivery pipeline 24 and the hot gas delivery pipeline 25, and the communication pipeline 27 is provided with a communication control valve 271, and the hot gas delivery pipeline 25 is provided with a hot gas control valve 251 (as shown in fig. 3), and the proportional damper is formed by the communication control valve 271 and the hot gas control valve 251, and the second implementation design is to provide a communication pipeline 27 between the cooling gas delivery pipeline 24 and the hot gas delivery pipeline 25, and the communication pipeline 27 is provided with a communication control valve 271, and the cooling gas delivery pipeline 24 is provided with a cooling control valve 241 (as shown in fig. 4), and the proportional damper is formed by the communication control valve 271 and the cooling control valve 241, therefore, the air flow can be controlled by adjusting the design of the communication control valve 271 and the hot air control valve 25 or the design of the communication control valve 271 and the cooling control valve 241, so that the temperature in the hot air delivery pipeline 25 can be kept at a certain high temperature for the desorption region 203 of the adsorption rotor 20.
Further, the next step proceeds to step S130 of heat storage gas delivery: the hot gas stored in the heating chamber 11 of the regenerative combustion furnace 10 is sent to the heater 30 through a regenerative gas recovery line 31 connected to the hot gas outlet 111. After the step S130 is completed, the next step S140 is performed.
In the above step S130, the heater 30 is connected to a hot gas recycling pipeline 31, and the other end of the hot gas recycling pipeline 31 is connected to the hot gas outlet 111 of the heating chamber 11 of the regenerative burner 10 (as shown in fig. 2 to 10), so that the hot gas in the heating chamber 11 of the regenerative burner 10 enters the hot gas recycling pipeline 31 through the hot gas outlet 111, and then the hot gas is transported to the heater 30 through the hot gas recycling pipeline 31 for use.
The regenerative thermal combustion furnace 10 is any one of a two-tower regenerative combustion furnace (as shown in fig. 2 to 4), a three-tower regenerative combustion furnace (as shown in fig. 5 to 7) or a rotary regenerative combustion furnace (as shown in fig. 8 to 10), and the heater 30 has three connection paths, wherein the first path is that when the regenerative thermal combustion furnace 10 is a two-tower regenerative combustion furnace, a three-tower regenerative combustion furnace or a rotary regenerative combustion furnace, the heater 30 is connected to a hot gas output pipeline 321 (as shown in fig. 2, 5 and 8), the other end of the hot gas output pipeline 321 is connected to the returned hot gas recovery pipeline 41, so that the hot gas output from the hot gas outlet 111 is conveyed into the heater 30 for use through the hot gas recovery pipeline 31 and then conveyed into the returned hot gas recovery pipeline 41 through the hot gas conveying pipeline 321, the heat-accumulating gas is introduced into the hot gas return line 41 and is delivered to the heat-return exchanger 40, so that the heat-accumulating gas can be recycled.
In the second path, when the regenerative thermal combustion furnace 10 is a two-tower regenerative thermal combustion furnace, a three-tower regenerative thermal combustion furnace or a rotary regenerative thermal combustion furnace, the heater 30 is connected to a hot gas discharge pipeline 322 (as shown in fig. 3, 6 and 9), and the other end of the hot gas discharge pipeline 322 is connected to a chimney 70, so that the regenerative gas output from the hot gas outlet 111 is conveyed to the heater 30 for use through the regenerative gas recovery pipeline 31, and then conveyed to the chimney 70 for discharge through the hot gas discharge pipeline 322, so that the regenerative gas is discharged to the atmosphere through the chimney 70.
In addition, when the regenerative combustion furnace 10 is a three-tower regenerative combustion furnace or a rotary regenerative combustion furnace, at least one scavenging (purge) line 14 is provided, the heater 30 is connected to a hot gas delivery line 323 (as shown in fig. 7 and 10), the other end of the hot gas delivery line 323 is connected to the other end of the scavenging (purge) line 14, so that the regenerative gas output from the hot gas outlet 111 is delivered into the heater 30 through the regenerative gas recycling line 31 for use, and then delivered into the scavenging (purge) line 14 through the hot gas delivery line 323, so that the regenerative gas is re-introduced into the regenerative combustion furnace 10 through the scavenging (purge) line 14, thereby achieving the recycling effect.
In addition, when the regenerative combustion furnace 10 is a three-tower regenerative combustion furnace or a rotary regenerative combustion furnace in the 1 st path and the 2 nd path, the regenerative combustion furnace 10 is provided with at least one scavenging (purge) line 14, and the other end of the scavenging (purge) line 14 is used for introducing fresh air (as shown in fig. 5, 6, 8 and 9), so that the scavenging (purge) line 14 is used for introducing fresh air from the outside.
Further, step S140 next proceeds to exhaust gas recovery conveyance: the gas discharged from the gas outlet line 13 of the regenerative thermal combustion furnace 10 is supplied to one end of the return hot-side line 402 of the return heat exchanger 40 through the return hot gas recovery line 41. After the step S140 is completed, the next step S150 is performed.
In addition, the next step S150 is via a return recovery line: the gas supplied to the return hot-side pipe 402 of the return heat exchanger 40 is supplied to one end of the exhaust gas intake pipe 21 through the return recovery pipe 42 connected to the other end of the return hot-side pipe 402 of the return heat exchanger 40.
The heat-returning heat exchanger 40 in the step S150 is connected to a hot-returning gas recycling pipeline 41 and a hot-returning gas recycling pipeline 42, one end of the cold-returning pipeline 401 of the heat-returning heat exchanger 40 is connected to the other end of the clean gas discharging pipeline 22, one end of the hot-returning pipeline 41 is connected to one end of the hot-returning pipeline 402 of the heat-returning heat exchanger 40, the other end of the hot-returning pipeline 41 is connected to the gas outlet pipeline 13 of the regenerative combustion furnace 10, one end of the hot-returning pipeline 42 is connected to the other end of the hot-returning pipeline 402 of the heat-returning heat exchanger 40, and the other end of the hot-returning pipeline 42 is connected to the exhaust gas inlet pipeline 21 (as shown in fig. 2 to fig. 10). Furthermore, the hot gas return line 41 and the hot gas return line 42 of the heat-return exchanger 40 can be provided with a dust-removing device 60 (as shown in fig. 7), or a dust-removing device 60 is provided only on the hot gas return line 42 of the heat-return exchanger 40 (as shown in fig. 6), or a dust-removing device 60 is provided only on the hot gas return line 41 of the heat-return exchanger 40 (as shown in fig. 4), so that the gas passing through the hot gas return line 41 or the gas passing through the hot gas return line 42 can be filtered by the dust-removing device 60, wherein the dust-removing device 60 is a bag filter, an electric bag filter, an inertial filter, an electrostatic filter, a centrifugal filter, a cartridge filter, a pulse bag filter, a pulse filter cartridge filter, or a pulse filter cartridge filter, The pulse blowing bag type dust collector, the wet type electric dust collector, the wet type electrostatic dust collector, the water film dust collector, the venturi tube dust collector, the cyclone separator, the flue dust collector, the multilayer dust collector, the negative pressure blowback filter bag dust collector, the low pressure long bag pulse dust collector, the horizontal type electrostatic dust collector, the unpowered dust collector, the charged water mist dust collector, the multi-tube cyclone dust collector, the explosion-proof dust collector, and the backflow recovery pipeline 42 of the backflow heat exchanger 40 is provided with a windmill 421 (as shown in fig. 4) to push the gas in the backflow recovery pipeline 42 into the waste gas inlet pipeline 21. Therefore, the gas burned in the regenerative thermal combustion furnace 10 is transported to the return hot side pipeline 402 of the return heat exchanger 40 through the return hot gas recovery pipeline 41 for heat exchange, then transported into the dust removing device 60 through the return recovery pipeline 42 for separation of oxides such as dust and silica (SiO2), and finally transported to the exhaust gas intake pipeline 21 through the gas output from the dust removing device 60, so that the burned gas enters the adsorption region 201 of the adsorption rotating wheel 20 for recycling, and is discharged without passing through the chimney 70, thereby reducing the discharge amount of the chimney 70 and improving the treatment efficiency of the organic exhaust gas.
From the above detailed description, it will be apparent to those skilled in the art that the foregoing objects and advantages of the present invention are achieved and are in accordance with the requirements of the patent laws.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (44)
1. An organic waste gas concentration heat accumulation combustion backflow system comprises:
the heat storage combustion furnace is provided with a heating chamber, at least one air inlet pipeline and at least one air outlet pipeline, and the heating chamber is provided with a hot air outlet;
the heater is connected with a heat storage gas recovery pipeline, and the other end of the heat storage gas recovery pipeline is connected with a hot gas outlet of a heating chamber of the heat storage combustion furnace;
an adsorption rotating wheel, the adsorption rotating wheel is provided with an adsorption area, a cooling area and a desorption area, the adsorption rotating wheel is connected with a waste gas inlet pipeline, a clean gas discharge pipeline, a cooling gas inlet pipeline, a cooling gas conveying pipeline, a hot gas conveying pipeline and a desorption concentrated gas pipeline, the other end of the waste gas inlet pipeline is connected to one side of the adsorption area of the adsorption rotating wheel, one end of the clean gas discharge pipeline is connected with the other side of the adsorption area of the adsorption rotating wheel, one end of the cooling gas inlet pipeline is connected with one side of the cooling area of the adsorption rotating wheel, one end of the cooling gas conveying pipeline is connected with the other side of the cooling area of the adsorption rotating wheel, the other end of the cooling gas conveying pipeline is connected with the heater, one end of the hot gas conveying pipeline is connected with the other side of the desorption area of the adsorption rotating wheel, and the other end of the hot gas conveying pipeline is connected with the heater, one end of the desorption concentrated gas pipeline is connected with one side of the desorption area of the adsorption rotating wheel, and the other end of the desorption concentrated gas pipeline is connected with at least one air inlet pipeline of the heat storage combustion furnace; and
a heat exchanger flows back, this heat exchanger flows back is equipped with backward flow cold side pipeline and backward flow hot side pipeline, this heat exchanger flows back is connected with a backward flow steam recovery pipeline and a backward flow recovery pipeline, the one end of this backward flow cold side pipeline is connected with the other end of this net gas emission pipeline, the one end of this backward flow steam recovery pipeline is connected with the one end of this backward flow hot side pipeline, the other end of this backward flow steam recovery pipeline is connected with the play gas pipeline that this heat accumulation fired furnace, the one end of this backward flow recovery pipeline is connected with the other end of this backward flow hot side pipeline, the other end and this waste gas admission pipe connection of this backward flow recovery pipeline.
2. The organic waste gas concentrated heat-accumulating combustion backflow system as claimed in claim 1, wherein the heater is further connected to a hot gas output line, and the other end of the hot gas output line is connected to the backflow hot gas recovery line.
3. The organic waste gas concentrated heat accumulating combustion backflow system as claimed in claim 1, wherein the heater is further connected to a hot gas discharge line, and the other end of the hot gas discharge line is connected to a chimney.
4. The organic waste gas concentrated regenerative combustion recirculation system according to claim 1, wherein the regenerative combustion furnace is further provided as any one of a two-tower regenerative combustion furnace, a three-tower regenerative combustion furnace, or a rotary regenerative combustion furnace.
5. The organic waste gas concentrated heat accumulation combustion backflow system as claimed in claim 4, wherein the three-tower type heat accumulation combustion furnace is further provided with at least one scavenging (purge) pipeline, and the other end of the scavenging (purge) pipeline is provided with fresh air.
6. The organic waste gas concentrated heat accumulating combustion backflow system as claimed in claim 4, wherein the three-tower type heat accumulating combustion furnace is further provided with at least one scavenging (purge) line, the heater is further connected with a hot gas recycling line, and the other end of the hot gas recycling line is connected with the other end of the scavenging (purge) line.
7. The organic waste gas concentrated heat accumulating combustion and returning system as claimed in claim 4, wherein the rotary heat accumulating combustion furnace is further provided with at least one scavenging (purge) line, and the other end of the scavenging (purge) line is provided with fresh air.
8. The organic waste gas concentrated heat accumulating combustion and returning system as claimed in claim 4, wherein the rotary heat accumulating combustion furnace is further provided with at least one scavenging (purge) line, the heater is further connected to a hot gas recycling line, and the other end of the hot gas recycling line is connected to the other end of the scavenging (purge) line.
9. The organic waste gas concentrated heat accumulating combustion backflow system as claimed in claim 1, wherein the heater is further any one of an air-to-air heat exchanger, a liquid-to-air heat exchanger, an electric heater, and a gas heater.
10. The organic waste gas concentrated heat-accumulating combustion backflow system as claimed in claim 1, wherein the backflow heat exchanger is further connected to a chimney, the chimney is provided with a chimney discharge pipeline, one end of the chimney discharge pipeline is connected to the chimney, and the other end of the chimney discharge pipeline is connected to the other end of the cold-side pipeline of the backflow heat exchanger.
11. The organic waste gas concentrated heat accumulating combustion backflow system as claimed in claim 10, wherein the chimney discharge pipeline is further provided with a windmill.
12. The organic waste gas concentrated heat storage combustion backflow system of claim 10, wherein the chimney discharge line is further connected with a clean gas bypass line, one end of the clean gas bypass line is connected with the clean gas discharge line, and the other end of the clean gas bypass line is connected with the chimney discharge line.
13. The organic waste gas concentrated heat accumulating combustion backflow system as claimed in claim 12, wherein the net gas bypass line is further provided with a net gas bypass control valve.
14. The organic waste gas concentrated heat-accumulating combustion recirculation system of claim 1, wherein a communication pipeline is further disposed between the cooling gas delivery pipeline and the hot gas delivery pipeline, the communication pipeline is provided with a communication control valve, the hot gas delivery pipeline is provided with a hot gas control valve, and a proportional damper is formed by the communication control valve and the hot gas control valve.
15. The organic waste gas concentrated heat-accumulating combustion recirculation system of claim 1, wherein a communication line is further disposed between the cooling gas delivery line and the hot gas delivery line, the communication line is provided with a communication control valve, the cooling gas delivery line is provided with a cooling control valve, and a proportional damper is formed by the communication control valve and the cooling control valve.
16. The organic waste gas concentrated heat storage combustion recirculation system of claim 1, wherein the cooling gas inlet pipeline further delivers an external gas to the cooling zone of the sorption rotor, and the external gas is fresh air.
17. The organic waste gas concentrated heat storage combustion backflow system as claimed in claim 1, wherein the cooling gas inlet pipe is further provided with a gas bypass pipe, one end of the gas bypass pipe is connected with the cooling gas inlet pipe, and the other end of the gas bypass pipe is connected with the waste gas inlet pipe.
18. The organic waste gas concentrated heat storage combustion backflow system of claim 1, wherein the net gas discharge pipeline is further provided with a windmill.
19. The organic waste gas concentrated heat storage combustion recirculation system of claim 1, wherein the desorption concentrated gas pipeline is further provided with a windmill.
20. The organic waste gas concentrated heat-accumulating combustion recirculation system according to claim 1, wherein the recirculation heat exchanger further comprises a recirculation heat recovery pipeline provided with a dust-removing device, the dust-removing device is any one of a bag filter, an electric bag filter, an inertial dust collector, an electrostatic dust collector, a centrifugal dust collector, a cartridge pulse dust collector, a pulse bag filter, a pulse filter element dust collector, a pulse blowing bag filter, a wet dust collector, a wet electric dust collector, a wet electrostatic dust collector, a water film dust collector, a venturi tube dust collector, a cyclone separator, a flue dust collector, a multi-layer dust collector, a negative pressure reverse-blowing filter bag dust collector, a low pressure long bag pulse dust collector, a horizontal electrostatic dust collector, a multi-tube dust collector, a charged water mist dust collector, a cyclone dust collector, and an explosion-proof dust collector.
21. The organic waste gas concentrated heat-accumulating combustion recirculation system according to claim 1, wherein the recirculation line of the recirculation heat exchanger is further provided with a dust-removing device, and the dust-removing device is further any one of a bag filter, an electric bag filter, an inertial dust collector, an electrostatic dust collector, a centrifugal dust collector, a cartridge pulse dust collector, a pulse bag filter, a pulse filter dust collector, a pulse blowing bag filter, a wet dust collector, a wet electric dust collector, a wet electrostatic dust collector, a water film dust collector, a venturi tube dust collector, a cyclone separator, a flue dust collector, a multi-layer dust collector, a negative pressure reverse-blowing filter dust collector, a low-pressure long bag pulse dust collector, a horizontal electrostatic dust collector, a non-dynamic dust collector, a multi-tube charged water mist dust collector, a cyclone dust collector, and an explosion-proof dust collector.
22. The organic waste gas concentrated heat storage combustion recirculation system of claim 1, wherein the recirculation line of the recirculation heat exchanger is further provided with a windmill.
23. A method for concentrating, accumulating and combusting organic waste gas to return it is mainly used in the organic waste gas treating system, which includes a heat accumulating combustion furnace, an adsorption rotating wheel, a heater and a return heat exchanger, the heat-accumulating combustion furnace is provided with a heating chamber, at least one air inlet pipeline and at least one air outlet pipeline, the heating chamber is provided with a hot air outlet, the adsorption rotating wheel is provided with an adsorption area, a desorption area and a cooling area, the adsorption rotating wheel is connected with a waste gas inlet pipeline, a purified gas discharge pipeline, a cooling gas inlet pipeline, a cooling gas conveying pipeline, a hot gas conveying pipeline and a desorption concentrated gas pipeline, the heater is connected with a heat accumulation gas recovery pipeline, the reflux heat exchanger is provided with a reflux cold side pipeline and a reflux hot side pipeline, the heat exchanger is connected with a hot gas return pipeline and a return recovery pipeline, and the method mainly comprises the following steps:
adsorption in an adsorption zone: waste gas is sent to one side of an adsorption area of the adsorption rotating wheel for adsorption through the other end of the waste gas inlet pipeline, and the adsorbed gas is conveyed to one end of a backflow cold side pipeline of the backflow heat exchanger through the other end of the purified gas discharge pipeline;
cooling in a cooling area: conveying cooling gas to a cooling area of the adsorption rotating wheel for cooling through the other end of the cooling gas inlet pipeline, and conveying the cooling gas passing through the cooling area into the heater through the other end of the cooling gas conveying pipeline;
desorption in a desorption area: the hot gas is conveyed to a desorption area of the adsorption rotating wheel for desorption through a hot gas conveying pipeline connected with the heater, and then the desorption concentrated gas is conveyed to at least one gas inlet pipeline of the heat storage combustion furnace through the other end of the desorption concentrated gas pipeline;
and (3) conveying heat storage gas: the heat storage gas of the heating chamber of the heat storage combustion furnace is conveyed into the heater through a heat storage gas recovery pipeline connected with the hot gas outlet;
and (3) recovering and conveying the exhaust gas: conveying gas discharged by a gas outlet pipeline of the heat accumulation combustion furnace to one end of a return hot side pipeline of the return heat exchanger through the return hot gas recovery pipeline; and
through a return recovery pipeline: and the gas conveyed to the return hot side pipeline of the return heat exchanger is conveyed to one end of the waste gas inlet pipeline through a return recovery pipeline connected with the other end of the return hot side pipeline of the return heat exchanger.
24. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein the heater is further connected to a hot gas output line, and the other end of the hot gas output line is connected to the backflow hot gas recovery line.
25. The organic waste gas concentrated heat accumulating combustion backflow method as claimed in claim 23, wherein the heater is further connected to a hot gas discharge line, and the other end of the hot gas discharge line is connected to a chimney.
26. The method of concentrated regenerative combustion recirculation of organic exhaust gas according to claim 23, wherein the regenerative combustion furnace is further provided as any one of a two-tower regenerative combustion furnace, a three-tower regenerative combustion furnace, or a rotary regenerative combustion furnace.
27. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 26, wherein the three-tower type heat storage combustion furnace is further provided with at least one scavenging (purge) line, and the other end of the scavenging (purge) line is provided with fresh air.
28. The organic waste gas concentrated regenerative combustion recirculation method according to claim 26, wherein the triple-tower regenerative combustion furnace further comprises at least one scavenging (purge) line, the heater is further connected to a hot gas recycling line, and the other end of the hot gas recycling line is connected to the other end of the scavenging (purge) line.
29. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 26, wherein the rotary heat storage combustion furnace is further provided with at least one scavenging (purge) line, and the other end of the scavenging (purge) line is provided with fresh air.
30. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 26, wherein the rotary heat storage combustion furnace is further provided with at least one scavenging (purge) line, the heater is further connected with a hot gas recycling line, and the other end of the hot gas recycling line is connected with the other end of the scavenging (purge) line.
31. The organic waste gas concentrated heat accumulating combustion backflow method as claimed in claim 23, wherein the heater is further any one of an air-to-air heat exchanger, a liquid-to-air heat exchanger, an electric heater, and a gas heater.
32. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein the backflow heat exchanger is further connected to a chimney, the chimney is provided with a chimney discharge pipeline, one end of the chimney discharge pipeline is connected to the chimney, and the other end of the chimney discharge pipeline is connected to the other end of the cold side pipeline of the backflow heat exchanger.
33. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 32, wherein the chimney discharge pipeline is further provided with a windmill.
34. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 32, wherein the chimney discharge line is further connected to a clean gas bypass line, one end of the clean gas bypass line is connected to the clean gas discharge line, and the other end of the clean gas bypass line is connected to the chimney discharge line.
35. The organic waste gas concentrated heat accumulating combustion backflow method as claimed in claim 34, wherein the net gas bypass line is further provided with a net gas bypass control valve.
36. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein a communication pipeline is further provided between the cooling gas conveying pipeline and the hot gas conveying pipeline, the communication pipeline is provided with a communication control valve, the hot gas conveying pipeline is provided with a hot gas control valve, and a proportional damper is formed by the communication control valve and the hot gas control valve.
37. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein a communication line is further provided between the cooling gas delivery line and the hot gas delivery line, the communication line is provided with a communication control valve, the cooling gas delivery line is provided with a cooling control valve, and a proportional damper is formed by the communication control valve and the cooling control valve.
38. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein the cooling gas inlet pipeline further delivers an external gas to the cooling zone of the sorption rotor, and the external gas is fresh air.
39. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein the cooling gas inlet pipe is further provided with a gas bypass pipe, one end of the gas bypass pipe is connected with the cooling gas inlet pipe, and the other end of the gas bypass pipe is connected with the waste gas inlet pipe.
40. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein the net gas discharge pipeline is further provided with a windmill.
41. The organic waste gas concentrated heat accumulating combustion backflow method as claimed in claim 23, wherein the desorption concentrated gas pipeline is further provided with a windmill.
42. The organic waste gas concentrated heat-accumulating combustion backflow method according to claim 23, wherein the backflow hot gas recovery pipeline of the backflow heat exchanger is further provided with a dust removal device, and the dust removal device is further any one of a bag type dust collector, an electric bag type composite dust collector, an inertial dust collector, an electrostatic dust collector, a centrifugal dust collector, a cartridge type pulse dust collector, a pulse bag type dust collector, a pulse filter element dust collector, a pulse blowing bag type dust collector, a wet type electric dust collector, a wet type electrostatic dust collector, a water film dust collector, a venturi tube dust collector, a cyclone separator, a flue dust collector, a multi-layer dust collector, a negative pressure reverse blowing filter bag type dust collector, a low pressure long bag type pulse dust collector, a horizontal type electrostatic dust collector, a unpowered multi-tube dust collector, an electrically charged water mist dust collector, a cyclone dust collector, and an explosion-proof dust collector.
43. The organic waste gas concentrated heat-accumulating combustion backflow method according to claim 23, wherein the backflow recovery pipeline of the backflow heat exchanger is further provided with a dust removal device, and the dust removal device is further any one of a bag type dust collector, an electric bag type composite dust collector, an inertial dust collector, an electrostatic dust collector, a centrifugal dust collector, a cartridge type pulse dust collector, a pulse bag type dust collector, a pulse filter element dust collector, a pulse blowing bag type dust collector, a wet type electric dust collector, a wet type electrostatic dust collector, a water film dust collector, a venturi tube dust collector, a cyclone separator, a flue dust collector, a multi-layer dust collector, a negative pressure back-blowing filter bag type dust collector, a low pressure long bag type pulse dust collector, a horizontal type electrostatic dust collector, a non-dynamic dust collector, a multi-tube charged water mist dust collector, a cyclone dust collector, and an explosion-proof dust collector.
44. The organic waste gas concentrated heat storage combustion backflow method as claimed in claim 23, wherein the backflow heat exchanger backflow recovery line is further provided with a windmill.
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| US20220355242A1 (en) * | 2021-05-07 | 2022-11-10 | Taiwan Semiconductor Manufacturing Co., Ltd. | System and method for removing volatile organic compounds from process gasses |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW202107017A (en) | 2021-02-16 |
| TWI741341B (en) | 2021-10-01 |
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