CN220083088U - RCO organic waste gas treatment device utilizing waste heat desorption - Google Patents
RCO organic waste gas treatment device utilizing waste heat desorption Download PDFInfo
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- CN220083088U CN220083088U CN202223382030.2U CN202223382030U CN220083088U CN 220083088 U CN220083088 U CN 220083088U CN 202223382030 U CN202223382030 U CN 202223382030U CN 220083088 U CN220083088 U CN 220083088U
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- 239000007789 gas Substances 0.000 title claims abstract description 65
- 238000003795 desorption Methods 0.000 title claims abstract description 40
- 239000002918 waste heat Substances 0.000 title claims abstract description 22
- 239000010815 organic waste Substances 0.000 title claims abstract description 17
- 230000003197 catalytic effect Effects 0.000 claims abstract description 110
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 35
- 230000003647 oxidation Effects 0.000 claims abstract description 34
- 238000002485 combustion reaction Methods 0.000 claims abstract description 25
- 239000002912 waste gas Substances 0.000 claims description 45
- 239000003054 catalyst Substances 0.000 claims description 17
- 238000004880 explosion Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 claims description 3
- 229910000510 noble metal Inorganic materials 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000012855 volatile organic compound Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 229910021536 Zeolite Inorganic materials 0.000 description 22
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 22
- 239000010457 zeolite Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
- 239000000112 cooling gas Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model provides an RCO organic waste gas treatment device utilizing waste heat desorption, which comprises a treatment box body, wherein the upper end of the treatment box body is provided with a combustion chamber; a burner and a heat exchanger; the lower end is sequentially provided with a catalytic device A, a catalytic device B and a catalytic device C; the catalytic device A, the catalytic device B and the catalytic device C are identical in structural shape, and a heat exchange area I and a heat exchange area II are arranged in the combustion chamber; a cold side inlet and a hot side outlet are arranged in the heat exchange area I or the heat exchange area II; the burner is used for controlling the catalytic device A, B and the oxidation combustion of the catalytic oxidation area corresponding to C; the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust gas inlet and a gas outlet; wherein the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust pipeline and a desorption gas pipeline. The utility model efficiently utilizes the heat of the hearth, does not need to carry out additional compensation heating on desorption gas, has the characteristics of low energy consumption and low operation cost, and is suitable for purifying industrial VOCs.
Description
Technical Field
The utility model belongs to the technical field of environmental protection, relates to an organic waste gas purifying treatment device, and particularly relates to an RCO organic waste gas treatment device utilizing waste heat desorption.
Background
At present, the purification treatment technology of VOCs can be divided into two major categories, namely a recovery technology and a destruction technology. The recovery technology is to realize enrichment and separation of organic pollutants by adopting selective adsorption or selective permeation through a physical method, and comprises adsorption, absorption, condensation, membrane separation and the like. The destruction technology is a method for oxidizing organic pollutants into harmless small molecules such as carbon dioxide, water and the like through oxidation reaction, and comprises catalytic combustion, catalytic oxidation, biological oxidation, low-temperature plasma, photocatalytic oxidation and the like. Aiming at the characteristics of large emission intensity, multiple pollutant types and long duration of industrial VOCs, a thermal storage catalytic oxidation technology or a thermal storage catalytic oxidation technology integrated with an adsorption concentration technology becomes the first choice for industrial VOCs pollution treatment.
At present, a two-body heat accumulating type catalytic oxidation device is commonly used, the problem of exhaust gas leakage exists, and once one device needs to be overhauled, the whole device is in an inactive state and cannot serve for enterprise production. When the zeolite on the rotating wheel is subjected to desorption regeneration, the desorption temperature is about 180-200 ℃, the temperature of the cooling gas on the rotating wheel is only 100-120 ℃, so that the desorption gas is required to be subjected to compensation heating so as to reach the desorption temperature of the zeolite to realize regeneration, the temperature in a hearth of a catalytic oxidation device is normally kept at 350-500 ℃, the heat in the hearth is not well utilized by the technology adopted by the existing waste gas treatment equipment, and the conditions of large energy loss and low utilization rate are caused.
Disclosure of Invention
In order to solve the problems, the utility model discloses an RCO organic waste gas treatment device by utilizing waste heat desorption; the device provides the multi-body catalytic oxidation device, and the high-efficient furnace heat that utilizes need not to carry out extra compensation heating to desorption gas, has characteristics low, the running cost low of energy consumption, is applicable to industrial VOCs's purification treatment.
The RCO organic waste gas treatment device utilizing waste heat desorption comprises a treatment box body, wherein the upper end of the treatment box body is provided with a combustion chamber; a burner and a heat exchanger; the lower end is sequentially provided with a catalytic device A, a catalytic device B and a catalytic device C; the catalytic device A, the catalytic device B and the catalytic device C are identical in structural shape, and a heat exchange area I and a heat exchange area II are arranged in the combustion chamber; a cold side inlet and a hot side outlet are arranged in the heat exchange area I or II; the burner is used for controlling the catalytic device A, B and the oxidation combustion of the catalytic oxidation area corresponding to C; the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust gas inlet and an exhaust gas outlet; wherein the catalytic device A, the catalytic device B and the waste gas inlet on the catalytic device C are communicated through an upper through pipeline; the catalytic device A, the catalytic device B and the waste gas outlet on the catalytic device C are communicated through a lower through pipeline; wherein the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust pipeline and a desorption gas pipeline.
The treatment box body is provided with a pipeline switching valve A1 and a pipeline switching valve A2 on pipelines corresponding to the catalytic device A respectively; the pipeline corresponding to the catalytic device B is respectively provided with a pipeline switching valve B1 and a pipeline switching valve B2, and the pipeline corresponding to the catalytic device C is respectively provided with a pipeline switching valve C1 and a pipeline switching valve C2.
The catalyst in the catalytic devices A, B and C is a honeycomb noble metal catalyst, and the catalyst is one or more of Pt or Pd.
The heat exchange materials in the heat exchange area I or the heat exchange area II are honeycomb heat storage ceramics.
The inner wall of the treatment box body is sequentially provided with a fireproof heat-insulating layer and a shell; wherein the shell is made of 321 stainless steel; the temperature sensor is arranged in the fireproof heat-insulating layer.
The top of the processing box body is provided with a explosion venting sheet.
Wherein a purging air pipe is arranged on one side of the treatment box body.
The RCO organic waste gas treatment process utilizing waste heat desorption comprises the following process flows:
scheme 1: A-B, heat exchange area I works: opening a pipeline switching valve A1 and a pipeline switching valve B2, closing the other pipeline switching valves, enabling the waste gas after the zeolite rotating wheel is desorbed to enter through a gas inlet, enabling the waste gas to enter a combustion chamber through a desorption gas pipeline for catalytic oxidation, and discharging the gas after catalytic oxidation combustion from an exhaust pipeline through a waste gas outlet; the waste gas generated by cooling the zeolite rotating wheel enters through the inlet of the cold side of the heat exchange area I, the temperature of the gas is 100-120 ℃, the waste gas enters into a heat exchanger in the device for waste heat utilization and heating to 180-200 ℃, and then the waste gas exits from the outlet of the hot side to desorb the zeolite rotating wheel, and the steps are circulated;
scheme 2: B-C, heat exchange area II works: opening a pipeline switching valve B1 and a pipeline switching valve C2, closing the other pipeline switching valves, enabling the waste gas after the zeolite rotating wheel is desorbed to enter through a gas inlet, enabling the waste gas to enter a combustion chamber through a desorption gas pipeline for catalytic oxidation, and discharging the gas after catalytic oxidation combustion from an exhaust pipeline through a waste gas outlet; the waste gas generated by cooling the zeolite rotating wheel enters through the cold side inlet of the heat exchange area II, the temperature of the gas is 100-120 ℃, the waste gas enters the heat exchanger 8 in the device for waste heat utilization and heating to 180-200 ℃, and then the waste gas exits from the hot side outlet and then the zeolite rotating wheel is desorbed, and the steps are circulated;
scheme 3: A-C, heat exchange area I or II work: opening a pipeline switching valve A1 and a pipeline switching valve C2, closing the other pipeline switching valves, enabling the waste gas after the zeolite rotating wheel is desorbed to enter through a gas inlet, enabling the waste gas to enter a combustion chamber through a desorption gas pipeline for catalytic oxidation, and discharging the gas after catalytic oxidation combustion from an exhaust pipeline through a waste gas outlet; the waste gas generated by cooling the zeolite rotating wheel enters through the cold side inlet of the heat exchange area I or II, the temperature of the gas is 100-120 ℃, the waste gas enters into the heat exchanger in the device to be heated to 180-200 ℃ by waste heat utilization, and then the waste gas exits from the hot side outlet to desorb the zeolite rotating wheel, and the steps are circulated.
Because the catalyst is in a high temperature state for a long time, the service life of the catalyst can be influenced, when the temperature of the catalyst layer in the catalytic oxidation device A reaches 350-450 ℃, the process 1 is closed, the process 2 is started, when the temperature of the catalyst layer in the catalytic oxidation device B reaches 350-450 ℃, the process 2 is closed, the process 3 is started, and the like.
The utility model has the beneficial effects that:
compared with the prior art, the temperature of cooling gas of the rotating wheel is 110-120 ℃, the temperature of the cooling gas of the rotating wheel is 150-160 ℃ from the outlet of the cold side after cooling, the desorption treatment of the zeolite rotating wheel is realized, the desorption gas is required to be heated to 180-220 ℃ in a compensating way, and the temperature of a hearth is generally kept at 400-450 ℃, so that the utility model utilizes the heat of the hearth to carry out heat compensation on the desorption gas, reduces an additional heating device, realizes low-energy consumption and low-cost operation, adopts a multi-body catalytic oxidation device, can flexibly utilize a multi-body device to work uninterruptedly by utilizing a switching valve, and avoids the condition of stopping operation caused by equipment overhaul.
Drawings
FIG. 1, front view of the present device;
FIG. 2, a side view of the present device;
list of reference numerals:
wherein 1-the treatment box body; 2-gas inlet; 3-an exhaust gas outlet; 4-a desorption gas conduit; 5-an exhaust duct; 6-a combustion chamber 6; 7-a burner; 8-a heat exchanger; 9-cold side inlet; 10-hot side outlet; 12-blowing an air pipe; 13-explosion venting piece.
Description of the embodiments
The present utility model is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the utility model and not limiting the scope of the utility model. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
As shown in fig. 1 and 2, the RCO organic waste gas treatment device using waste heat desorption in this embodiment includes a treatment box, where an inner wall of the treatment box is sequentially provided with a refractory insulation layer 14 and a casing 15, where the casing 15 is made of 321 stainless steel materials; the temperature sensor is arranged in the refractory heat-insulating layer 14; the top of the treatment box body is provided with a explosion venting sheet 13; wherein a purge air duct 12 is provided on one side of the treatment tank.
Wherein the upper end of the treatment box body is provided with a combustion chamber 6; a burner 7 and a heat exchanger 8; the lower end is sequentially provided with a catalytic device A, a catalytic device B and a catalytic device C; the catalytic device A, the catalytic device B and the catalytic device C have the same structural shape, and a heat exchange area I and a heat exchange area II are arranged in the combustion chamber 6; the heat exchange materials of the heat exchange areas I and II are honeycomb heat storage ceramics. A cold side inlet 9 and a hot side outlet 10 are arranged in the heat exchange area I or II; the burner 7 is used for controlling the catalytic device A, B and the oxidation combustion of the catalytic oxidation area corresponding to C;
the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust gas inlet 2 and an exhaust gas outlet 3; wherein the catalytic device A, the catalytic device B and the waste gas inlet 2 on the catalytic device C are communicated through an upper through pipeline; the catalytic device A, the catalytic device B and the waste gas outlet 3 on the catalytic device C are communicated through a lower through pipeline; wherein the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust pipeline 5 and a desorption gas pipeline 4.
The treatment box body is provided with a pipeline switching valve A1 and a pipeline switching valve A2 on pipelines corresponding to the catalytic device A respectively; the pipeline corresponding to the catalytic device B is respectively provided with a pipeline switching valve B1 and a pipeline switching valve B2, and the pipeline corresponding to the catalytic device C is respectively provided with a pipeline switching valve C1 and a pipeline switching valve C2.
Wherein the catalyst in the catalytic device A, B and the catalyst in the catalyst C are honeycomb noble metal catalysts, and the catalyst is one or more of Pt or Pd.
The RCO organic waste gas treatment process utilizing waste heat desorption comprises the following process flows:
scheme 1: A-B, heat exchange area I works: opening a pipeline switching valve A1 and a pipeline switching valve B2, closing the other pipeline switching valves, enabling the waste gas after the zeolite rotating wheel is desorbed to enter through a gas inlet 2, enabling the waste gas to enter a combustion chamber through a desorption gas pipeline 4 for catalytic oxidation, and discharging the gas after catalytic oxidation and combustion from an exhaust pipeline 5 through a waste gas outlet 3; the waste gas generated by cooling the zeolite rotating wheel enters through the cold side inlet 9 of the heat exchange area I, the temperature of the gas is 100-120 ℃, the waste gas enters the heat exchanger 8 in the device to be heated to 180-200 ℃ by waste heat utilization, and then the waste gas exits from the hot side outlet 10 to desorb the zeolite rotating wheel, and the steps are circulated;
scheme 2: B-C, heat exchange area II works: opening a pipeline switching valve B1 and a pipeline switching valve C2, closing the other pipeline switching valves, enabling the waste gas after the zeolite rotating wheel is desorbed to enter through a gas inlet 2, enabling the waste gas to enter a combustion chamber through a desorption gas pipeline 4 for catalytic oxidation, and discharging the gas after catalytic oxidation and combustion from an exhaust pipeline 5 through a waste gas outlet 3; the waste gas generated by cooling the zeolite rotating wheel enters through the cold side inlet 9 of the heat exchange area II, the temperature of the gas is 100-120 ℃, the waste gas enters the heat exchanger 8 in the device to be heated to 180-200 ℃ by waste heat utilization, and then the waste gas exits from the hot side outlet 10 to desorb the zeolite rotating wheel, and the steps are circulated;
scheme 3: A-C, heat exchange area I or II work: opening a pipeline switching valve A1 and a pipeline switching valve C2, closing the other pipeline switching valves, enabling the waste gas after the zeolite rotating wheel is desorbed to enter through a gas inlet 2, enabling the waste gas to enter a combustion chamber through a desorption gas pipeline 4 for catalytic oxidation, and discharging the gas after catalytic oxidation and combustion from an exhaust pipeline 5 through a waste gas outlet 3; the waste gas generated by cooling the zeolite rotating wheel enters through the cold side inlet 9 of the heat exchange area I or II, the temperature of the gas is 100-120 ℃, the waste gas enters the heat exchanger 8 in the device to be heated to 180-200 ℃ by waste heat utilization, and then the waste gas exits from the hot side outlet 10 to desorb the zeolite rotating wheel, and the steps are circulated.
The temperature of the cooled waste gas of the rotating wheel is 100-120 ℃, the cooled waste gas is used as desorption gas to carry out desorption treatment on the zeolite rotating wheel, the desorption gas is required to be heated to 180-200 ℃ in a compensating way, the temperature of a hearth is generally kept at 350-450 ℃, the service life of the rotating wheel is influenced because the catalyst is in a high-temperature state for a long time, when the temperature of a catalyst layer in a catalytic oxidation device A reaches 350-450 ℃, the process 1 is closed, the process 2 is started, and when the temperature of the catalyst layer in a catalytic oxidation device B reaches 350-450 ℃, the process 2 is closed, the process 3 is started, and the like.
The utility model utilizes the heat of the hearth to carry out heat compensation on desorption gas, reduces an additional heating device, realizes low-energy consumption and low-cost operation, adopts a multi-body catalytic oxidation device, can flexibly utilize the multi-body device to work uninterruptedly by utilizing a switching valve, and avoids the condition of stopping operation caused by equipment overhaul.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features.
Claims (7)
1. An RCO organic waste gas treatment device utilizing waste heat desorption, which is characterized in that: comprises a treatment box body (1), wherein the upper end of the treatment box body is provided with a combustion chamber (6); a burner (7) and a heat exchanger (8); the lower end is sequentially provided with a catalytic device A, a catalytic device B and a catalytic device C; the catalytic device A, the catalytic device B and the catalytic device C are identical in structural shape, and a heat exchange area I and a heat exchange area II are arranged in the combustion chamber (6); a cold side inlet (9) and a hot side outlet (10) are arranged in the heat exchange area I or the heat exchange area II; the burner (7) is used for controlling the catalytic device A, B and the oxidation combustion of the catalytic oxidation area corresponding to C; the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust gas inlet (2) and an exhaust gas outlet (3); wherein the catalytic device A, the catalytic device B and the waste gas inlet (2) on the catalytic device C are communicated through an upper through pipeline; the catalytic device A, the catalytic device B and the waste gas outlet (3) on the catalytic device C are communicated through a lower through pipeline; wherein the catalytic device A, the catalytic device B and the catalytic device C are respectively provided with an exhaust pipeline (5) and a desorption gas pipeline (4).
2. The RCO organic waste gas treatment device utilizing waste heat desorption according to claim 1, wherein: the treatment box body is provided with a pipeline switching valve A1 and a pipeline switching valve A2 on pipelines corresponding to the catalytic device A respectively; the pipeline corresponding to the catalytic device B is respectively provided with a pipeline switching valve B1 and a pipeline switching valve B2, and the pipeline corresponding to the catalytic device C is respectively provided with a pipeline switching valve C1 and a pipeline switching valve C2.
3. The RCO organic waste gas treatment device utilizing waste heat desorption according to claim 1, wherein: the catalyst in the catalytic device A, B and C is a honeycomb noble metal catalyst.
4. The RCO organic waste gas treatment device utilizing waste heat desorption according to claim 1, wherein: the heat exchange materials in the heat exchange area I or the heat exchange area II are honeycomb heat storage ceramics.
5. The RCO organic waste gas treatment device utilizing waste heat desorption according to claim 1, wherein: the inner wall of the treatment box body is sequentially provided with a fireproof heat-insulating layer (14) and a shell (15), wherein the shell (15) is made of 321 stainless steel; the temperature sensor is arranged in the refractory heat-insulating layer (14).
6. The RCO organic waste gas treatment device utilizing waste heat desorption according to claim 1, wherein: the top of the treatment box body is provided with a explosion venting sheet (13).
7. The RCO organic waste gas treatment device utilizing waste heat desorption according to claim 1, wherein: wherein a purging air pipe (12) is arranged on one side of the treatment box body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223382030.2U CN220083088U (en) | 2022-12-16 | 2022-12-16 | RCO organic waste gas treatment device utilizing waste heat desorption |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223382030.2U CN220083088U (en) | 2022-12-16 | 2022-12-16 | RCO organic waste gas treatment device utilizing waste heat desorption |
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| CN220083088U true CN220083088U (en) | 2023-11-24 |
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| CN202223382030.2U Active CN220083088U (en) | 2022-12-16 | 2022-12-16 | RCO organic waste gas treatment device utilizing waste heat desorption |
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