CN218672209U - Low-energy-consumption concentration oxidation device suitable for low-concentration VOC waste gas - Google Patents
Low-energy-consumption concentration oxidation device suitable for low-concentration VOC waste gas Download PDFInfo
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- CN218672209U CN218672209U CN202221712478.3U CN202221712478U CN218672209U CN 218672209 U CN218672209 U CN 218672209U CN 202221712478 U CN202221712478 U CN 202221712478U CN 218672209 U CN218672209 U CN 218672209U
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Abstract
The utility model discloses a low energy consumption concentration oxidation unit suitable for middle-low concentration VOC waste gas, including preliminary treatment section, absorption concentration section, desorption purification section, catalytic oxidation section and heat recovery section, the preliminary treatment section is connected the waste gas collection system device entry, and preliminary treatment section exit linkage VOC concentration runner adsorption zone, the absorption export is let in the aiutage behind the system fan, and the cooling air inserts the cooling zone, and the cooling export is connected regeneration auxiliary heater behind plate heat exchanger and is inserted into VOC concentration runner desorption zone, inserts the desorption fan through desorption zone; the heat recovery section plate heat exchanger is connected with a heat storage device, the heat storage device is connected with a desorption outlet of the VOC concentration rotating wheel, and the heat storage device and the VOC concentration rotating wheel are connected with the catalytic auxiliary heater through a desorption fan; desorption purifies section catalysis auxiliary heater exit linkage to catalytic combustion room, and the export of catalytic combustion room and plate heat exchanger entry linkage insert the heat accumulation device again, connect the aiutage behind the heat accumulation device, the utility model discloses an effect of energy-conserving when handling low concentration VOC waste gas.
Description
Technical Field
The utility model belongs to the exhaust-gas treatment field especially relates to a concentrated oxidation unit of low energy consumption suitable for middle low concentration VOC waste gas.
Background
VOC is an english abbreviation of volatile organic compounds, organic waste gas is highly volatile, easily diffused, and has a large pungent odor, which adversely affects the respiratory system, digestive system, endocrine system, nervous system, and mental capacity of humans. Organic waste gas pollutants are various in types and different in characteristics, so correspondingly adopted treatment methods are different, and the common treatment methods are as follows: condensation, absorption, adsorption, biological, high temperature oxidation, low temperature plasma, and the like. For the treatment of large-air-volume low-concentration VOC waste gas, the waste gas treatment process of molecular sieve rotating wheel + CO (catalytic oxidation incinerator) is a common waste gas purification technology. However, the existing waste gas treatment process requires a large amount of heat when operated, and has no heat recovery system, so that the energy consumption is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the equipment energy consumption is high that the big amount of wind, low concentration industrial waste gas exist is handled to current runner concentration technique, provides a concentrated oxidation unit of low energy consumption suitable for low-concentration VOC waste gas, has improved heat recovery efficiency when handling low concentration VOC waste gas.
In order to solve the technical problem, the utility model provides a low energy consumption concentration oxidation device suitable for the middle-low concentration VOC waste gas, which comprises a pretreatment section, an adsorption concentration section, a catalytic oxidation section and a heat recovery section for recycling waste heat;
the pretreatment section is connected with an inlet of the device and is used for primarily filtering the waste gas;
the adsorption concentration section is provided with a VOC concentration rotating wheel, the inlet of an adsorption area of the VOC concentration rotating wheel is connected with the outlet of the pretreatment section, the outlet of the adsorption area is introduced into the exhaust funnel after passing through a system fan, the inlet of a cooling area of the VOC concentration rotating wheel is connected with an external air cooling air inlet, the outlet of the cooling area is connected to the inlet of a desorption area of the VOC concentration rotating wheel after passing through a regeneration auxiliary heater, and the outlet of the desorption area is connected with a desorption fan;
the catalytic oxidation section comprises a catalytic auxiliary heater and a catalytic combustion chamber, and an outlet of the desorption fan sequentially passes through the catalytic auxiliary heater and the catalytic combustion chamber and then is introduced into the exhaust funnel;
the heat recovery section comprises a plate heat exchanger and a heat storage device, the heat storage device is arranged on pipelines between the desorption fan and the catalytic auxiliary heater as well as between the catalytic combustion chamber and the exhaust funnel, and the heat stored by the heat storage device is transferred to the waste gas at the outlet of the desorption region of the VOC concentration rotating wheel; the plate heat exchanger is arranged on a pipeline between the catalytic combustion chamber and the heat storage device, and the heat of the plate heat exchanger is transferred to the gas at the outlet of the VOC concentration rotating wheel cooling area.
Preferably, the filtration module in the pretreatment section comprises at least two of a wire mesh filtration module, a DPA filtration module, a plate-type precise defogging module, a plate-type activated carbon purification module, an F5-grade filtration module, an F6-grade filtration module and an F9-grade filtration module.
Preferably, the catalytic auxiliary heater is heated by electricity or natural gas.
Preferably, a heat-insulating layer is arranged in the catalytic combustion chamber, and an explosion venting port is formed at the inlet of the catalytic combustion chamber.
Compared with the prior art, the technical scheme has the following beneficial effects:
1) And (4) high-efficiency pretreatment. And a high-precision multi-stage filtering module is adopted to filter the waste gas with high and medium precision, so that the concentration of the particulate matter dust entering the adsorption concentration section is less than or equal to 1mg/m < 3 >.
2) Low operation energy consumption. The utility model discloses a catalytic oxidation section equipment adopts the heat accumulator device to replace traditional plate-type or fin tubular heat exchanger, compact structure, heat recovery efficiency height (reach more than 90%), and the operation energy consumption is low.
3) Lower catalyst loading. The utility model discloses a catalytic oxidation section equipment adopts split type, and is less than traditional heat accumulation formula catalytic oxidation device catalyst loading, and the catalyst is changed conveniently.
4) The catalytic combustion purification adopts an anti-poisoning high-efficiency low-temperature catalyst, and achieves higher purification efficiency (more than or equal to 95 percent) at lower temperature (200-300 ℃).
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
in the figure: 1. the system comprises a waste gas inlet, a 2 th emergency discharge port, a 3 th G4 th bag type filtration, a 4 th F7 th bag type filtration, a 5 th F9 th bag type filtration, a 6 th VOC concentration rotary wheel, a 7 th system fan, a 8 th desorption fan, a 9 th external air cooling air inlet, a 10 th G4 plate type filtration, a 11 th regeneration auxiliary heater, a 12 th heat storage device, a 13 th catalytic auxiliary heater, a 14 th catalytic combustion chamber, a 15 th plate type heat exchanger, a 16 th exhaust funnel.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a low energy consumption concentration oxidation device suitable for low-concentration VOC waste gas, which comprises a pretreatment section, an adsorption concentration section, a catalytic oxidation section and a heat recovery section for recycling waste heat;
the pretreatment section is connected with an inlet of the device and is used for primarily filtering the waste gas;
the adsorption concentration section is provided with a VOC concentration rotating wheel 6, the inlet of the adsorption area of the VOC concentration rotating wheel 6 is connected with the outlet of the pretreatment section, the outlet of the adsorption area is introduced into an exhaust funnel 16 after passing through a system fan 7, the inlet of the cooling area of the VOC concentration rotating wheel 6 is connected with an external air cooling air inlet 9, the outlet of the cooling area is connected to the inlet of the desorption area of the VOC concentration rotating wheel 6 after passing through a regeneration auxiliary heater 11, and the outlet of the desorption area is connected with a desorption fan 8;
the catalytic oxidation section comprises a catalytic auxiliary heater 13 and a catalytic combustion chamber 14, and an outlet of the desorption fan 8 passes through the catalytic auxiliary heater 13 and the catalytic combustion chamber 14 in sequence and then is introduced into an exhaust funnel 16;
the heat recovery section comprises a plate heat exchanger 15 and a heat storage device 12, the heat storage device 12 is arranged on pipelines between the desorption fan 8 and the catalytic auxiliary heater 13 as well as between the catalytic combustion chamber 14 and the exhaust funnel 16, and the heat stored in the heat storage device 12 is transferred to the waste gas at the outlet of the desorption area of the VOC concentration rotating wheel 6; the plate heat exchanger 15 is arranged on a pipeline between the catalytic combustion chamber 15 and the heat storage device 12, and the heat of the plate heat exchanger is transferred to the gas at the outlet of the cooling area of the VOC concentration runner 6.
Preferably, the filtration module in the pretreatment section comprises at least two of a wire mesh filtration module, a DPA filtration module, a plate type precise demisting module, a plate type activated carbon purification module, a F5-grade filtration module, a F6-grade filtration module and a F9-grade filtration module.
Preferably, the catalytic auxiliary heater 13 is electrically heated or heated by natural gas.
Preferably, an insulating layer is arranged in the catalytic combustion chamber 14, and an explosion venting opening is formed at the inlet of the catalytic combustion chamber 14.
The former technology with the utility model discloses a device performance parameter contrast is shown as follows:
the utility model discloses following beneficial effect has:
1) And (4) high-efficiency pretreatment. And a high-precision multi-stage filtering module is adopted to filter the waste gas with high precision, so that the concentration of the particulate matters and dust entering the adsorption concentration section is less than or equal to 1mg/m < 3 >.
2) Lower operation energy consumption. The utility model discloses a catalytic oxidation section equipment adopts the heat accumulator device to replace traditional plate-type or fin tubular heat exchanger, and compact structure, heat recovery efficiency are high (reach more than 90%), and the operation energy consumption is low.
3) Less catalyst loading. The utility model discloses a catalytic oxidation section equipment adopts split type, and is less than traditional heat accumulation formula catalytic oxidation device catalyst loading, and the catalyst is changed conveniently.
4) The catalytic combustion purification adopts an anti-poisoning high-efficiency low-temperature catalyst, and achieves higher purification efficiency (more than or equal to 95 percent) at lower temperature (200-300 ℃).
The utility model provides a handle the problem that the equipment energy consumption is high that big amount of wind, low concentration industrial waste gas exist to current runner concentration technique, improved heat recovery efficiency when handling low concentration VOC waste gas.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be embodied in other specific forms other than those described herein, and it will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a concentrated oxidation unit of low energy consumption suitable for middle low concentration VOC waste gas includes pretreatment section, adsorption concentration section, catalytic oxidation section, its characterized in that in proper order: the heat recovery section is also arranged for recovering and utilizing waste heat;
the pretreatment section is connected with an inlet of the device and is used for primarily filtering the waste gas;
the adsorption concentration section is provided with a VOC concentration rotating wheel (6), the inlet of the adsorption area of the VOC concentration rotating wheel (6) is connected with the outlet of the pretreatment section, the outlet of the adsorption area is introduced into an exhaust funnel (16) after passing through a system fan (7), the inlet of the cooling area of the VOC concentration rotating wheel (6) is connected with an external air cooling air inlet (9), the outlet of the cooling area is connected to the inlet of the desorption area of the VOC concentration rotating wheel (6) after passing through a regeneration auxiliary heater (11), and the outlet of the desorption area is connected with a desorption fan (8);
the catalytic oxidation section comprises a catalytic auxiliary heater (13) and a catalytic combustion chamber (14), and an outlet of the desorption fan (8) sequentially passes through the catalytic auxiliary heater (13) and the catalytic combustion chamber (14) and then is introduced into an exhaust funnel (16);
the heat recovery section comprises a plate heat exchanger (15) and a heat storage device (12), the heat storage device (12) is arranged on a pipeline between a desorption fan (8) and a catalytic auxiliary heater (13) and between a catalytic combustion chamber (14) and an exhaust funnel (16), and heat stored by the heat storage device (12) is transferred to waste gas at an outlet of a desorption area of the VOC concentration rotating wheel (6); the plate heat exchanger (15) is arranged on a pipeline between the catalytic combustion chamber (14) and the heat storage device (12), and the heat of the plate heat exchanger is transferred to the gas at the outlet of the cooling area of the VOC concentration runner (6).
2. The low-energy-consumption concentrating and oxidizing device suitable for the medium-low-concentration VOC waste gas is characterized in that the filtering modules in the pretreatment section comprise at least two of a wire mesh filtering module, a DPA filtering module, a plate-type precise demisting module, a plate-type activated carbon purifying module, an F5-grade filtering module, an F6-grade filtering module and an F9-grade filtering module.
3. The low-energy-consumption concentrated oxidation device for the waste gas containing low-concentration VOC according to claim 1, characterized in that the catalytic auxiliary heater (13) is electrically heated or heated by natural gas.
4. The low-energy-consumption concentrating and oxidizing device for the medium-low-concentration VOC waste gas as claimed in claim 1, wherein an insulating layer is arranged in the catalytic combustion chamber (14), and an explosion venting port is arranged at the inlet of the catalytic combustion chamber (14).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221712478.3U CN218672209U (en) | 2022-07-05 | 2022-07-05 | Low-energy-consumption concentration oxidation device suitable for low-concentration VOC waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221712478.3U CN218672209U (en) | 2022-07-05 | 2022-07-05 | Low-energy-consumption concentration oxidation device suitable for low-concentration VOC waste gas |
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| Publication Number | Publication Date |
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| CN218672209U true CN218672209U (en) | 2023-03-21 |
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| CN202221712478.3U Active CN218672209U (en) | 2022-07-05 | 2022-07-05 | Low-energy-consumption concentration oxidation device suitable for low-concentration VOC waste gas |
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| CN (1) | CN218672209U (en) |
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2022
- 2022-07-05 CN CN202221712478.3U patent/CN218672209U/en active Active
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