CN215929583U - Waste heat recycling device of catalytic combustion reaction device - Google Patents
Waste heat recycling device of catalytic combustion reaction device Download PDFInfo
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- CN215929583U CN215929583U CN202122311672.2U CN202122311672U CN215929583U CN 215929583 U CN215929583 U CN 215929583U CN 202122311672 U CN202122311672 U CN 202122311672U CN 215929583 U CN215929583 U CN 215929583U
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Abstract
The utility model is suitable for the technical field of waste gas treatment, and provides a waste heat recycling device of a catalytic combustion reaction device, which comprises a first air pipe, wherein a first adsorption bed, a second adsorption bed and a third adsorption bed are sequentially arranged above the first air pipe from left to right; a first fan is arranged on one side of the adsorption bed III; when waste gas needs to be treated, the waste gas firstly enters the dry type dust removal device to enable the dry type dust removal device to remove particles or water mist in the waste gas, then the treated waste gas is sent to the adsorption bed under the action of the first fan, the activated carbon fibers further treat the waste gas at the moment, and finally the treated gas is discharged in the high altitude through a chimney.
Description
Technical Field
The utility model belongs to the technical field of waste gas treatment, and particularly relates to a waste heat recycling device of a catalytic combustion reaction device.
Background
With the rapid development of economy, a large amount of chemical enterprises are rising, and the shortage of environmental protection investment strength results in the emission of a large amount of industrial organic waste gas, so that the quality of atmospheric environment is reduced, and the environment and human health are seriously harmed. In recent years, the severe haze phenomenon frequently occurs in various cities in China, Volatile Organic Compounds (VOCs) are gradually emphasized by people, and the nation also provides a key treatment plan for organic waste gas emission.
The existing organic waste gas is directly discharged to the atmosphere without being treated, so that the pollution to the external environment is easily caused; on the other hand, the organic waste gas has certain heat when being discharged, but the prior device does not fully recycle the heat in the waste gas.
SUMMERY OF THE UTILITY MODEL
The utility model provides a waste heat recycling device of a catalytic combustion reaction device, aiming at solving the problems that the existing organic waste gas is directly discharged to the atmosphere without being treated and is easy to pollute the external environment; on the other hand, the organic waste gas has certain heat when being discharged, but the prior device does not have the problem of fully recycling the heat in the waste gas.
The utility model is realized in such a way that the waste heat recycling device of the catalytic combustion reaction device comprises a first air pipe, wherein a first adsorption bed, a second adsorption bed and a third adsorption bed are sequentially arranged above the first air pipe from left to right, and the first adsorption bed, the second adsorption bed and the third adsorption bed are communicated with the first air pipe through the second air pipe; a third air pipe is arranged above the first adsorption bed, the second adsorption bed and the third adsorption bed are communicated with the three phases of the air pipes through a fourth air pipe, and the side walls of the second air pipe and the fourth air pipe are provided with a first control valve; and a first fan is arranged on one side of the third adsorption bed and is communicated with the air pipe in a three-phase mode.
Preferably, adsorbents are arranged inside the first adsorption bed, the second adsorption bed and the third adsorption bed; the adsorbent is activated carbon fiber.
Preferably, a second fan is arranged between the third adsorption bed and the first fan; the first adsorption bed, the second adsorption bed and the third adsorption bed are communicated with the second fan through a fifth air pipe; and a catalytic combustion device is arranged on one side of the second fan, and the second fan is communicated with the catalytic combustion device through an air pipe.
Preferably, a waste heat boiler is arranged on one side of the catalytic combustion device; one end of the waste heat boiler is communicated with the catalytic combustion device, and the other end of the waste heat boiler is communicated with a tail gas pipe.
Preferably, the top of the tail gas pipe is provided with a seventh air pipe; one end of the air pipe VII is communicated with the tail gas pipe, and the other end of the air pipe VII is respectively communicated with the first adsorption bed, the second adsorption bed and the three-phase adsorption bed; and the side walls of the seventh air pipe and the fifth air pipe are both provided with a second control valve.
Preferably, the waste heat boiler comprises a superheater; an evaporator is arranged on one side of the superheater, a coal economizer is arranged on one side of the evaporator, and a steam drum is arranged above the evaporator; the bottom of the economizer is communicated with a water inlet pipe, and the economizer is communicated with the steam pocket; the steam drum is communicated with the superheater through a conveying pipe; a down pipe is arranged at the bottom of the steam drum, one end of the down pipe is communicated with the steam drum, and the other end of the down pipe is communicated with the evaporator; the evaporator is communicated with the steam pocket, and the top of the superheater is provided with a superheated steam outlet.
Preferably, a steam pipe is arranged above the waste heat boiler; one end of the steam pipe is communicated with the superheated steam outlet, and the other end of the steam pipe is communicated with the air pipe; a workshop is arranged below the steam pipe and communicated with the steam pipe.
Compared with the prior art, the utility model has the beneficial effects that: through setting up adsorption bed one, adsorption bed two and adsorption bed three, when needs handle waste gas, waste gas at first enters into dry dust collector, makes dry dust collector detach the particulate matter or the water smoke in the waste gas, then under the effect of fan one, send the waste gas after handling to the adsorption bed in, active carbon fiber further handles waste gas this moment, the gas after the final processing is discharged through the chimney high altitude, this device can handle organic waste gas, avoid causing the pollution to the external environment.
Through the arrangement of the catalytic combustion device, when the activated carbon fiber is about to be saturated, the adsorption operation is stopped, organic matters are desorbed from the activated carbon fiber through the combustion tail gas which is used by a fan and recycled by waste heat so as to be regenerated, the desorbed high-concentration organic waste gas enters the catalytic combustion device, a catalytic bed is combusted and decomposed into CO2 and H2O, and then the purified high-temperature gas enters the waste heat boiler so as to recover heat.
By arranging the waste heat boiler, part of gas of combustion tail gas after passing through the waste heat boiler enters the air pipe seventh for desorption operation, and part of gas is discharged at high altitude through a chimney; a small part of high-temperature steam generated by the waste heat boiler is used for preheating high-concentration organic waste gas discharged by desorption, and the rest of high-temperature steam is reused in a workshop.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structures of a first adsorption bed, a second adsorption bed and a third adsorption bed according to the present invention;
FIG. 3 is a schematic structural diagram of a waste heat boiler of the present invention;
FIG. 4 is a schematic structural diagram of the waste heat boiler connected with a workshop;
in the figure: 1. a first air pipe; 2. a first adsorption bed; 3. a second adsorption bed; 4. a third adsorption bed; 5. a second air duct; 6. a third air duct; 7. a fourth air duct; 8. a first control valve; 9. a first fan; 10. a second fan; 11. a fifth air duct; 111. a catalytic combustion device; 12. a sixth air duct; 13. a waste heat boiler; 131. a superheater; 1311. a water inlet pipe; 132. an evaporator; 133. a coal economizer; 134. a steam drum; 135. a delivery pipe; 136. a down pipe; 137. a superheated steam outlet; 138. a steam pipe; 139. a workshop; 14. a tail gas pipe; 15. a seventh air duct; 16. a second control valve; 17. a chimney; 18. provided is a dry dust removal device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, a waste heat recycling device of a catalytic combustion reaction device comprises a first air pipe 1, wherein a first adsorption bed 2, a second adsorption bed 3 and a third adsorption bed 4 are sequentially arranged above the first air pipe 1 from left to right, and the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4 are communicated with the first air pipe 1 through a second air pipe 5; a third air pipe 6 is arranged above the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4 are communicated with the third air pipe 6 through a fourth air pipe 7, and a first control valve 8 is arranged on the side walls of the second air pipe 5 and the fourth air pipe 7; and a first fan 9 is arranged on one side of the third adsorption bed 4, and the first fan 9 is communicated with a third air pipe 6. Adsorbents are arranged inside the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4; the adsorbent is activated carbon fiber. A second fan 10 is arranged between the third adsorption bed 4 and the first fan 9; the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4 are communicated with a second fan 10 through a fifth air pipe 11; and a catalytic combustion device 111 is arranged on one side of the second fan 10, and the second fan 10 is communicated with the catalytic combustion device 111 through a sixth air pipe 12.
In the embodiment, a first air pipe 1 is arranged, wherein one end of the first air pipe 1 is connected with a dry type dust removal device 18, and the dry type dust removal device 18 pretreats the organic waste gas to remove granular substances or water mist; the air outlet of the first fan 9 is communicated with a chimney 17. By arranging the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4, the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4 form an activated carbon fiber organic waste gas adsorption device, when the first adsorption bed 2 adsorbs, the second adsorption bed 3 desorbs, the third adsorption bed 4 cools, and the adsorption, desorption and cooling of the adsorption beds are sequentially carried out. Each adsorption bed is connected with an electric control cabinet, and is automatically switched through a control program and sequentially and alternately used.
The organic waste gas generally enters the adsorption bed from the air pipe II 5 through the air pipe I1, wherein organic matters are adsorbed by the activated carbon fiber, and the purified gas is discharged from the air pipe IV 7. And when the adsorption saturation of the activated carbon fiber reaches 90%, desorbing the activated carbon fiber. At the moment, the control valves I8 on the air pipes II 5 and IV 7 are closed through an automatic control program, and adsorption is stopped; and simultaneously opening a second control valve 16 on the air pipe seven 15 and the air pipe five 11, introducing desorption hot gas through the air pipe seven 15 from the top of the adsorption bed, blowing the desorption hot gas to pass through the activated carbon fibers, desorbing adsorbed organic matters, and sending the desorbed organic matters into the catalytic combustion device 111 through the air pipe five 11 to further process purified gas.
Through setting up the activated carbon fiber, because the activated carbon fiber surface area is big, the micropore is flourishing, the aperture distributes widely, adsorption capacity is big (several times to tens times more than granular activated carbon), the adsorption rate is fast (2 ~ 3 orders of magnitude faster than granular activated carbon), and the regeneration is easy quick, the desorption is thorough, still keep original adsorption performance after adsorbing the desorption many times, especially still keep very high adsorption capacity (the adsorption efficiency of honeycomb charcoal or granular carbon this moment is then greatly reduced) to 10-6 grades of adsorbates, consequently, the purifying rate to organic waste gas is high. Meanwhile, the fireproof performance is good (the ignition point in the air reaches more than 500 ℃), and the adsorption layer is very thin, so that the danger that the granular carbon or honeycomb carbon adsorption device is easy to generate combustion and explosion due to heat accumulation is avoided.
Referring to fig. 1, 3 and 4, a waste heat boiler 13 is disposed at one side of the catalytic combustion device 111; one end of the waste heat boiler 13 is communicated with the catalytic combustion device 111, and the other end of the waste heat boiler 13 is communicated with the tail gas pipe 14. The top of the tail gas pipe 14 is provided with a seventh air pipe 15; one end of the air pipe seven 15 is communicated with the tail gas pipe 14, and the other end of the air pipe seven 15 is respectively communicated with the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4; and the side walls of the air duct seven 15 and the air duct five 11 are both provided with a control valve II 16. The waste heat boiler 13 comprises a superheater 131; an evaporator 132 is arranged on one side of the superheater 131, an economizer 133 is arranged on one side of the evaporator 132, and a steam drum 134 is arranged above the evaporator 132; the bottom of the economizer 133 is communicated with a water inlet pipe 1311, and the economizer 133 is communicated with the steam pocket 134; the steam drum 134 is communicated with the superheater 131 through a delivery pipe 135; a downcomer 136 is arranged at the bottom of the steam drum 134, one end of the downcomer 136 is communicated with the steam drum 134, and the other end of the downcomer 136 is communicated with the evaporator 132; the evaporator 132 is in communication with a drum 134, and the top of the superheater 131 has a superheated steam outlet 137. A steam pipe 138 is arranged above the waste heat boiler 13; one end of the steam pipe 138 is communicated with the superheated steam outlet 137, and the other end of the steam pipe 138 is communicated with the air pipe six 12; a plant 139 is provided below the steam pipe 138, and the plant 139 communicates with the steam pipe 138.
In the present embodiment, by providing the waste heat boiler 13 with the steam drum 134 and the downcomer 136 outside the furnace body. A user can inject water into the steam drum 134, and when high-temperature fuel gas passes through the evaporator 132, the water in the tube bundle in the evaporator 132 is heated into a steam-water mixture; since the water in the downcomer 136 is unheated, the vapor-water mixture in the tube bundle is less dense than the water in the downcomer 136, thereby creating a pressure differential that pushes the vapor-water mixture in the evaporator 132 into the drum 134 and the water in the downcomer 136 into the tube bundle in the evaporator 132, thereby creating a natural circulation.
The steam drum 134 is an important pivot for heating, evaporating and overheating water, and ensures normal water circulation of the boiler. The steam drum 134 is internally provided with a steam-water separator, when steam-water mixture enters the steam drum 134, the steam-water mixture is separated into saturated steam and water through the steam-water separator, and the saturated steam is output through a conveying pipe 135; the separated water then enters downcomer 136.
The high-temperature air flow after combustion passes through the superheater 131, the evaporator 132 and the economizer 133 in sequence, water entering the steam drum 134 is heated in the economizer 133 firstly, and then enters the evaporator 132 through the steam drum 134 and the downcomer 136, so that the efficiency of the evaporator 132 and the efficiency of the boiler can be improved. Saturated steam generated by the evaporator 132 is output through the steam drum 134 and then enters the superheater 131 to be heated into superheated steam, and the superheated steam is used for driving the steam turbine to operate, so that the high efficiency and the safety of the system can be ensured.
In summary, by arranging the first adsorption bed 2, the second adsorption bed 3 and the third adsorption bed 4, when waste gas needs to be treated, the waste gas firstly enters the dry dust removal device 18, so that the dry dust removal device 18 removes particulate matters or water mist in the waste gas, then the treated waste gas is sent to the adsorption beds under the action of the first fan 9, at the moment, the waste gas is further treated by the activated carbon fibers, and finally the treated gas is discharged at high altitude through the chimney 17, so that the device can treat the organic waste gas and avoid pollution to the external environment;
stopping adsorption operation when the activated carbon fiber is about to be saturated, desorbing organic matters from the activated carbon fiber by using combustion tail gas recycled by waste heat through a second fan 10 to regenerate the activated carbon fiber, feeding the desorbed high-concentration organic waste gas into a catalytic combustion device 111 to enable a catalytic bed to be combusted and decomposed into CO2 and H2O, feeding the purified high-temperature gas into a waste heat boiler 13 to enable the waste heat boiler 13 to recover heat;
part of the combustion tail gas enters an air pipe seven 15 through a waste heat boiler 13 for desorption operation, and part of the gas is discharged at high altitude through a chimney 17; a small part of high-temperature steam generated by the waste heat boiler 13 is used for preheating high-concentration organic waste gas discharged in the desorption process, and the rest of high-temperature steam is reused in the workshop 139, so that the device has good economic benefit, and the temperature of combustion tail gas is greatly reduced through the waste heat boiler 13, and the device is used for the desorption operation and is safe and reliable.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a catalytic combustion reaction unit waste heat recycles device, includes tuber pipe one (1), its characterized in that: the adsorption bed I (2), the adsorption bed II (3) and the adsorption bed III (4) are sequentially arranged above the air pipe I (1) from left to right, and the adsorption bed I (2), the adsorption bed II (3) and the adsorption bed III (4) are communicated with the air pipe I (1) through an air pipe II (5);
a third air pipe (6) is arranged above the first adsorption bed (2), the second adsorption bed (3) and the third adsorption bed (4) are communicated with the third air pipe (6) through a fourth air pipe (7), and the side walls of the second air pipe (5) and the fourth air pipe (7) are respectively provided with a first control valve (8);
and a first fan (9) is arranged on one side of the third adsorption bed (4), and the first fan (9) is communicated with the third air pipe (6).
2. The catalytic combustion reaction device residual heat recycling device according to claim 1, characterized in that: adsorbents are arranged inside the first adsorption bed (2), the second adsorption bed (3) and the third adsorption bed (4);
the adsorbent is activated carbon fiber.
3. The catalytic combustion reaction device residual heat recycling device according to claim 1, characterized in that: a second fan (10) is arranged between the third adsorption bed (4) and the first fan (9);
the first adsorption bed (2), the second adsorption bed (3) and the third adsorption bed (4) are communicated with the second fan (10) through a fifth air pipe (11);
and a catalytic combustion device (111) is arranged on one side of the second fan (10), and the second fan (10) is communicated with the catalytic combustion device (111) through a sixth air pipe (12).
4. The catalytic combustion reaction device residual heat recycling device according to claim 3, characterized in that: a waste heat boiler (13) is arranged on one side of the catalytic combustion device (111);
one end of the waste heat boiler (13) is communicated with the catalytic combustion device (111), and the other end of the waste heat boiler (13) is communicated with a tail gas pipe (14).
5. The catalytic combustion reaction device residual heat recycling device according to claim 4, characterized in that: a seventh air pipe (15) is arranged at the top of the tail air pipe (14);
one end of the air pipe seven (15) is communicated with the tail gas pipe (14), and the other end of the air pipe seven (15) is respectively communicated with the first adsorption bed (2), the second adsorption bed (3) and the third adsorption bed (4);
and a second control valve (16) is arranged on the side walls of the seventh air pipe (15) and the fifth air pipe (11).
6. The catalytic combustion reaction device residual heat recycling device according to claim 4, characterized in that: the waste heat boiler (13) comprises a superheater (131);
an evaporator (132) is arranged on one side of the superheater (131), an economizer (133) is arranged on one side of the evaporator (132), and a steam drum (134) is arranged above the evaporator (132);
the bottom of the economizer (133) is communicated with a water inlet pipe (1311), and the economizer (133) is communicated with the steam drum (134);
the steam drum (134) is communicated with the superheater (131) through a conveying pipe (135);
a descending pipe (136) is arranged at the bottom of the steam drum (134), one end of the descending pipe (136) is communicated with the steam drum (134), and the other end of the descending pipe (136) is communicated with the evaporator (132);
the evaporator (132) is communicated with the steam drum (134), and the top of the superheater (131) is provided with a superheated steam outlet (137).
7. The catalytic combustion reaction device residual heat recycling device according to claim 6, characterized in that: a steam pipe (138) is arranged above the waste heat boiler (13);
one end of the steam pipe (138) is communicated with the superheated steam outlet (137), and the other end of the steam pipe (138) is communicated with the air pipe six (12);
a workshop (139) is arranged below the steam pipe (138), and the workshop (139) is communicated with the steam pipe (138).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311672.2U CN215929583U (en) | 2021-09-24 | 2021-09-24 | Waste heat recycling device of catalytic combustion reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311672.2U CN215929583U (en) | 2021-09-24 | 2021-09-24 | Waste heat recycling device of catalytic combustion reaction device |
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| Publication Number | Publication Date |
|---|---|
| CN215929583U true CN215929583U (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122311672.2U Active CN215929583U (en) | 2021-09-24 | 2021-09-24 | Waste heat recycling device of catalytic combustion reaction device |
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| CN (1) | CN215929583U (en) |
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2021
- 2021-09-24 CN CN202122311672.2U patent/CN215929583U/en active Active
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