CN214038451U - High-concentration organic waste gas sectional catalytic combustion device - Google Patents
High-concentration organic waste gas sectional catalytic combustion device Download PDFInfo
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- CN214038451U CN214038451U CN202021782376.XU CN202021782376U CN214038451U CN 214038451 U CN214038451 U CN 214038451U CN 202021782376 U CN202021782376 U CN 202021782376U CN 214038451 U CN214038451 U CN 214038451U
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Abstract
The utility model provides a high concentration organic waste gas segmentation catalytic combustion device belongs to exhaust-gas treatment technical field. The specific method comprises the steps of collecting high-concentration organic waste gas, and under the action of a draught fan, enabling the high-concentration organic waste gas to sequentially pass through a primary heat exchanger, a primary preheating chamber, a primary catalytic combustion chamber, a secondary heat exchanger and a secondary catalytic combustion chamber, and finally enabling the high-concentration organic waste gas to be discharged up to the standard through an exhaust funnel. The utility model has the advantages that: high safety, high adaptability, low running cost, high purifying efficiency and no secondary pollution.
Description
Technical Field
The utility model relates to a high concentration organic waste gas purifier, concretely relates to high concentration organic waste gas segmentation catalytic combustion device.
Background
With the development of modern industry, organic solvents are used as an important raw material in chemical industry and medicineThe organic solvents are mainly hydrocarbon and oxygen compounds, and because of volatility, a large amount of VOC can be generated in the production and use processesSAnd (4) exhaust gas.
In view of volatile organic pollutants (VOC)S) Seriously pollutes the environment, and the management becomes a hot spot of the current domestic and foreign environmental research. The existing mature organic waste gas treatment process mainly comprises the following steps: condensation, adsorption, organic solvent absorption, biological, photocatalytic oxidation, UV photolysis, direct combustion, and catalytic combustion.
For high concentration volatile organic pollutants (VOC)S) At present, the industry commonly adopts a combustion method, and the combustion method is divided into direct combustion, catalytic combustion and regenerative combustion. Because the catalytic combustion can completely oxidize and decompose the waste gas at the temperature of between 250 ℃ and 500 ℃, the operation cost can be greatly reduced, and the application of the catalytic combustion in the field of industrial waste gas treatment is more and more popular.
At present, the air inlet concentration of a conventional catalytic combustion device needs to be controlled by a word of 2-3g/m3In between, too low a concentration results in the need to replenish a large amount of heat, and too high a concentration exceeds the normal operating temperature range of the catalytic combustion unit, risking the burnout of the equipment. However, the concentration of the exhaust gas generated in the actual production process is often more than 3g/m3More, even up to 10g/m3Therefore, the application of catalytic combustion to the field of high-concentration exhaust gas treatment is limited.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is not high mainly to solve traditional catalytic combustion device and handle high concentration organic waste gas efficiency to arouse the furnace body overtemperature easily, the heat accumulation combustion method handles high concentration organic waste gas investment cost too high simultaneously, provides a technological feasibility, economic rationality, reliable to reach standard new technology for high concentration organic waste gas handles.
In order to achieve the above purpose, the utility model provides a technical scheme is:
a high-concentration organic waste gas sectional catalytic combustion device comprises a catalytic combustion device, wherein the catalytic combustion device is provided with a catalytic combustion chamber; the catalytic combustion chamber is provided with a waste gas inlet, a primary heat exchanger, a first-section preheating zone, a first-section catalytic combustion zone, a secondary heat exchanger, a second-section catalytic combustion zone and a combustion flue gas outlet;
waste gas collection pipeline is connected to waste gas entry one end, the other end is connected one-level heat exchanger cold source cold side import, one-level heat exchanger cold source cold side access connection one-level heat exchanger cold source hot side export, one-level heat exchanger cold source cold side exit linkage one section preheating chamber, one section catalytic combustion district is connected to one section preheating chamber, one section catalytic combustion district connects second grade heat exchanger heat source hot side import, second grade heat exchanger heat source hot side access connection second grade heat exchanger heat source cold side export, second grade heat exchanger cold side heat source exit linkage two-stage catalytic combustion district, one-level heat exchanger heat source hot side import is connected one-level heat exchanger heat source hot side export to two-stage catalytic combustion district, one-level heat exchanger heat.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the catalytic combustion device comprises a main body, wherein a base is arranged at the lower part of the main body, an air inlet and an air outlet are respectively arranged at the upper side and the lower side of the main body, and an electric heating pipe is arranged in the main body and connected with a power supply.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the electric heating pipe is of a finned pipe type and is made of 316L.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the electric heating tubes are uniformly arranged in a matrix shape.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the catalytic combustion device comprises a main body, a base is arranged on the lower portion of the main body, an air inlet and an air outlet are formed in the upper side and the lower side of the main body respectively, and a first catalytic combustion area and a second catalytic combustion area are arranged in the main body.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: and the first section of catalytic combustion area is filled with a noble metal catalyst.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: and the two-section catalytic combustion area is filled with a common metal catalyst.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the high-concentration organic waste gas sectional catalytic combustion device is characterized by comprising a main body, wherein a base is arranged on the lower portion of the main body, an air inlet and an air outlet are respectively formed in the upper side and the lower side of the main body, a primary heat exchanger and a secondary heat exchanger are arranged in the main body
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the primary heat exchanger is of a fin plate type, the cold source is high-concentration organic waste gas, and the heat source is high-temperature flue gas at the outlet of the two-section catalytic combustion.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the secondary heat exchanger is of a fin plate type, the cold source is tap water, and the heat source is high-temperature flue gas at the outlet of the first-stage catalytic combustion.
Further, the utility model provides a pair of high concentration organic waste gas catalytic combustion device can also have such characteristic: the catalytic combustion device is of a vertical structure.
The utility model provides a pair of high concentration organic waste gas segmentation catalytic combustion device has following beneficial effect:
(1) the noble metal catalyst filled in the first catalytic combustion area is less, so that the cost of the catalyst can be greatly reduced.
(2) The two-section catalytic combustion area is filled with more common catalysts, so that the oxidative decomposition efficiency of the organic waste gas can be improved.
(3) The first-stage catalytic combustion chamber is provided with a noble metal catalyst, and the noble metal catalyst can catalyze, oxidize and decompose the organic waste gas at a lower temperature of 180 ℃, so that the high-temperature flue gas discharged from the second-stage combustion chamber can be utilized to preheat the high-concentration organic waste gas to enable the temperature of the organic waste gas to reach more than 180 ℃.
(4) The two-section catalytic combustion chamber is provided with a common metal catalyst, and the ignition temperature of the two-section catalytic combustion chamber is higher and is usually about 250 ℃, so that the temperature of the flue gas at the outlet of the first-section catalytic combustion chamber can be utilized to directly carry out the second-section catalytic combustion.
(5) Because the temperature of the flue gas at the outlet of the first-stage combustion chamber is generally above 400 ℃, a large amount of hot water can be generated by the secondary heat exchanger to be used for production in a factory.
(6) To sum up, the utility model provides a pair of high concentration organic waste gas catalytic combustion device compares traditional catalytic combustion device and has that the security performance is high, investment cost is low, the running cost is low, get rid of efficiently, the incomparable advantage such as adaptability is strong.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a gas flow diagram of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in figure 1, the utility model provides a pair of high concentration organic waste gas segmentation catalytic combustion device, including equipment casing 1, one-level heat exchanger 2, the electric heating district 3, one section catalytic combustion district 4, second grade heat exchanger 5, two-stage process catalytic combustion district 6. Wherein the heat exchangers 2 and 5 are positioned below the inner part of the equipment shell; the electric heating zone 3 is positioned in the middle of the inner part of the equipment shell; the catalytic combustion zones 4, 6 are located above the interior of the apparatus housing.
The primary heat exchanger 2 is located on the left side inside the equipment shell 1, and the secondary heat exchanger 5 is located on the right side inside the equipment shell 1.
The first catalytic combustion zone 4 is located on the left side inside the equipment housing 1, and the second catalytic combustion zone 6 is located on the right side inside the equipment housing 1. The catalytic combustion zones 4, 6 are provided with a plurality of temperature monitoring thermocouples 9, the thermocouples 9 being evenly distributed within the catalytic combustion chambers 4, 6.
The device housing 1 also has four legs 7, which are fixed to four feet at the bottom of the device housing 1, respectively, for supporting the entire apparatus. The top end of the equipment shell 1 is also provided with an explosion venting opening 8 so as to ensure the safe and reliable operation of the device.
The electric heating zone 3 is provided with a plurality of finned tube type electric heating tubes 10 for heating when the device is started, and the electric heating tubes 10 are uniformly distributed in the electric heating zone 3. The electric heating zone 3 is provided with a plurality of temperature monitoring thermocouples 9 for controlling the programmed temperature rise.
Specifically, the high-concentration organic waste gas staged catalytic combustion device has the following working process:
as shown in fig. 2, the exhaust gas passes through the primary heat exchanger 2, one end of the cold source channel is an exhaust gas inlet 11 connected to an air inlet 13, and the other end is an exhaust gas outlet 14 connected to an inlet 15 of the electric heating zone; one end of the heat source channel is a high-temperature flue gas inlet 17 which is connected with an outlet 18 of the two-section catalytic combustion zone; the other end is a high-temperature flue gas outlet 19 which is connected with an exhaust port 20.
The electric heating area inlet 15 is communicated with the electric heating area outlet 21; the outlet 21 of the electric heating zone is connected to the inlet 22 of the catalytic combustion zone.
The first-stage catalytic combustion zone inlet 22 is communicated with the first-stage catalytic combustion zone outlet 23; the high-temperature flue gas at the outlet 23 of the first-stage catalytic combustion area passes through the secondary heat exchanger 5. One end of the heat source channel is a high-temperature flue gas inlet 25 connected with the outlet 23 of the first-stage catalytic combustion area, and the other end is a high-temperature flue gas outlet 26 connected with the inlet 27 of the second-stage catalytic combustion area; one end of the cold source channel is a tap water inlet 29, and the other end is a tap water outlet 30.
The second-stage catalytic combustion zone inlet 27 is communicated with the second-stage combustion zone outlet 18; the outlet 18 of the secondary combustion zone is connected with the inlet 17 of the heat source channel of the primary heat exchanger. Thus, a complete catalytic oxidative decomposition process of the exhaust gas is formed.
To sum up, the utility model discloses a high-concentration organic waste gas sectional catalytic combustion device, which is characterized in that through two sections of catalytic combustion, a small amount of noble metal catalyst is filled in a catalytic combustion area, and the purpose of saving electric energy is achieved by utilizing the characteristic of lower ignition temperature of the noble metal catalyst; the two-section catalytic combustion area is filled with common metal catalyst, so that the filling amount of the common catalyst is increased, and the aim of efficiently oxidizing and decomposing waste gas is fulfilled. Meanwhile, a heat exchanger is additionally arranged between the first-stage catalytic combustion area and the second-stage catalytic combustion area to take away excessive heat released by the oxidative decomposition of the waste gas in the first-stage catalytic combustion area. On the one hand, the risk of overhigh heat of complete oxidative decomposition of the high-concentration organic waste gas can be solved, and on the other hand, the oxidative decomposition efficiency of the waste gas can be improved, so that the device has stronger practicability.
Claims (6)
1. A high-concentration organic waste gas sectional catalytic combustion device is characterized in that,
comprises a catalytic combustion device having a catalytic combustion chamber;
the catalytic combustion chamber is provided with a waste gas inlet, a primary heat exchanger, a first-section preheating zone, a first-section catalytic combustion zone, a secondary heat exchanger, a second-section catalytic combustion zone and a combustion flue gas outlet;
the first-stage catalytic combustion zone is filled with a noble metal catalyst;
the two-section catalytic combustion zone is filled with a common catalyst;
waste gas collection pipeline is connected to waste gas entry one end, the other end is connected one-level heat exchanger cold source cold side import, one-level heat exchanger cold source cold side access connection one-level heat exchanger cold source hot side export, one-level heat exchanger cold source cold side exit linkage one section preheating chamber, one section catalytic combustion district is connected to one section preheating chamber, one section catalytic combustion district connects second grade heat exchanger heat source hot side import, second grade heat exchanger heat source hot side access connection second grade heat exchanger heat source cold side export, second grade heat exchanger cold side heat source exit linkage two-stage catalytic combustion district, one-level heat exchanger heat source hot side import is connected one-level heat exchanger heat source hot side export to two-stage catalytic combustion district, one-level heat exchanger heat source cold side exit linkage fan, exhaust duct is connected to the fan.
2. The device of claim 1, wherein the catalytic combustion device comprises a main body, a base is disposed at a lower portion of the main body, an air inlet and an air outlet are disposed at upper and lower sides of the main body, respectively, and an electric heating tube is disposed inside the main body and connected to a power supply.
3. The apparatus of claim 2, wherein the electric heating tube is a finned tube type, made of 316L, and arranged in a matrix-type uniform arrangement.
4. The device of claim 1, wherein the catalytic combustion device comprises a main body, a base is arranged at the lower part of the main body, an air inlet and an air outlet are respectively arranged at the upper side and the lower side of the main body, and a first catalytic combustion zone and a second catalytic combustion zone are arranged in the main body.
5. The device of claim 1, wherein the catalytic combustion device comprises a main body, a base is arranged at the lower part of the main body, an air inlet and an air outlet are respectively arranged at the upper side and the lower side of the main body, and a primary heat exchanger and a secondary heat exchanger are arranged in the main body.
6. The device of claim 1, wherein the primary heat exchanger is a fin plate type, a cold source of the primary heat exchanger is high-concentration organic waste gas, and a heat source of the primary heat exchanger is high-temperature flue gas at an outlet of the two-stage catalytic combustion device; the secondary heat exchanger is of a fin plate type, a cold source of the secondary heat exchanger is tap water, and a heat source of the secondary heat exchanger is high-temperature flue gas at a section of catalytic combustion outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021782376.XU CN214038451U (en) | 2020-08-24 | 2020-08-24 | High-concentration organic waste gas sectional catalytic combustion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021782376.XU CN214038451U (en) | 2020-08-24 | 2020-08-24 | High-concentration organic waste gas sectional catalytic combustion device |
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| CN214038451U true CN214038451U (en) | 2021-08-24 |
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| CN202021782376.XU Active CN214038451U (en) | 2020-08-24 | 2020-08-24 | High-concentration organic waste gas sectional catalytic combustion device |
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- 2020-08-24 CN CN202021782376.XU patent/CN214038451U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A segmented catalytic combustion device for high concentration organic waste gas Effective date of registration: 20211215 Granted publication date: 20210824 Pledgee: Wuhan area branch of Hubei pilot free trade zone of Bank of China Ltd. Pledgor: WUHAN STHB ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2021420000142 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |