CN220861099U - High temperature fluorine-containing VOCs exhaust treatment device - Google Patents
High temperature fluorine-containing VOCs exhaust treatment device Download PDFInfo
- Publication number
- CN220861099U CN220861099U CN202320658554.5U CN202320658554U CN220861099U CN 220861099 U CN220861099 U CN 220861099U CN 202320658554 U CN202320658554 U CN 202320658554U CN 220861099 U CN220861099 U CN 220861099U
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- CN
- China
- Prior art keywords
- tower
- alkaline washing
- catalytic oxidation
- waste gas
- alkali wash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 13
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 239000011737 fluorine Substances 0.000 title claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 44
- 230000003197 catalytic effect Effects 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 25
- 238000010791 quenching Methods 0.000 claims abstract description 16
- 230000000171 quenching effect Effects 0.000 claims abstract description 12
- 239000003513 alkali Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- 239000003054 catalyst Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 238000010669 acid-base reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a high-temperature fluorine-containing VOCs waste gas treatment device, and belongs to the field of chemical industry. The device comprises a catalytic oxidation reactor and an alkaline washing tower, wherein the catalytic oxidation reactor is connected with the alkaline washing tower through a quenching tower. The device adopts a combination mode of a catalytic oxidation method and alkaline washing to realize the standard discharge of waste gas.
Description
Technical Field
The utility model relates to the fields of chemical industry and environmental protection, in particular to a high-temperature fluorine-containing VOCs waste gas treatment device.
Background
Currently, the treatment of VOCs gas containing halogen (such as F, cl, br, etc.) is mostly carried out by direct incineration. In order to prevent the generation of dioxin or other harmful substances, the direct incineration temperature of the waste gas needs to reach about 1100 ℃, and the energy consumption is high. Such gases may be treated by catalytic oxidation, in which the catalyst functions to reduce the reaction activation energy while enriching the reactant molecules on the catalyst surface to increase the reaction rate. The organic waste gas can be subjected to flameless reaction at a lower ignition temperature by means of the catalyst, and is oxidatively decomposed into CO 2 and H 2 O, and a large amount of heat is emitted. However, the treatment of high temperature HF-containing exhaust gas after catalytic oxidation has certain difficulties. Some processes directly wash the high-temperature HF-containing waste gas in an alkaline washing tower to realize the standard emission of the tail gas. Stainless steel such as 304 or 316 is adopted in the alkaline washing tower, the temperature of catalytic oxidation outlet waste gas is higher, high-temperature HF-containing gas can cause corrosion to metal equipment, and the alkaline washing tower are easy to corrode and even leak.
Disclosure of utility model
In view of the above problems in the prior art, an object of the present invention is to: the novel fluoride-containing VOCs waste gas treatment mode has the advantages of simple process, high safety, good treatment effect and low operation and maintenance cost.
The aim of the utility model can be achieved by the following technical scheme:
The device comprises a catalytic oxidation reactor and an alkaline washing tower, wherein the catalytic oxidation reactor is connected with the alkaline washing tower through a quenching tower.
The technical scheme of the utility model is as follows: the output end of the quenching tower is connected with the lower part of the alkaline washing tower.
The technical scheme of the utility model is as follows: the middle part of the alkaline washing tower is provided with alkaline washing filler.
The technical scheme of the utility model is as follows: an alkaline cleaning spraying system is arranged above the alkaline cleaning filler.
The technical scheme of the utility model is as follows: a demister is arranged above the alkaline washing spray system.
The technical scheme of the utility model is as follows: the bottom of the alkaline washing tower is connected with an alkaline washing spray system through an alkaline washing tower circulating pump.
The technical scheme of the utility model is as follows: and the waste gas emission up to standard is realized by adopting a combination mode of a catalytic oxidation method and alkaline washing. VOCs in the waste gas are treated by adopting a catalytic oxidation method, and the outlet temperature of the catalytic oxidation is controlled below 450 ℃. And (3) removing VOCs and HF-containing high-temperature tail gas by catalytic oxidation, reducing the temperature of the tail gas to below 80 ℃ by adopting a quencher mode, and then entering an alkaline washing tower. The top of the quenching tower is provided with a tail gas inlet, the upper part of the tail gas inlet is provided with a quenching water spray port, and the lower part of the tail gas inlet is provided with a tower wall cooling water inlet. The quench tower is selected from graphite or titanium. Nozzles are arranged in the inner cavity of the upper part of the quenching tower at intervals, and industrial water is utilized to quickly cool the waste gas. The alkaline washing tower is a packed tower, the alkaline washing tower is made of corrosion-resistant plastic materials, and the packing is plastic structured packing.
The process comprises a catalytic oxidation reactor, a quenching tower circulating pump, an alkaline washing tower circulating pump and the like. The catalytic oxidation device is internally provided with a catalyst. The quench tower belongs to a high-temperature high-humidity environment, needs HF corrosion resistance, and is made of graphite or titanium. The alkaline washing tower is a packed tower, the packed tower is made of plastic materials such as glass fiber reinforced plastic, and the tower is filled with plastic random packing. The alkaline washing tower is provided with alkaline liquor for spraying, so that quick acid-base reaction between HF and the alkaline liquor is promoted, and the tower top is provided with a demister, so that spraying liquid drops are reduced to enter discharged tail gas.
The utility model has the beneficial effects that:
The technical scheme of the utility model is that the standard emission of waste gas is realized by adopting a combined mode of a catalytic oxidation method and alkaline washing. After the high-temperature fluorine-containing VOCs waste gas at about 250 ℃ enters catalytic oxidation to remove most of organic matters, the temperature of the waste gas is reduced to about 80 ℃ by utilizing a quenching mode, the waste gas enters an alkaline washing tower, alkaline washing tower is provided with alkaline liquor for spraying, and after HF in the waste gas reacts with the alkaline liquor, the waste gas is discharged after reaching the standard.
Drawings
FIG. 1 is a schematic diagram of the practical flow;
1.2 parts of catalytic oxidation reactor, 3 parts of reaction catalyst, 3 parts of quench tower, 4 parts of alkaline washing filler, 5 parts of alkaline washing tower, 6 parts of alkaline washing tower circulating pump, 7 parts of alkaline washing spraying system, 8 parts of demister.
Detailed Description
The utility model is further illustrated below with reference to examples, but the scope of the utility model is not limited thereto:
Referring to fig. 1, a high-temperature fluorine-containing VOCs waste gas treatment device comprises a catalytic oxidation reactor 1 and an alkaline washing tower 5, wherein the catalytic oxidation reactor 1 is connected with the alkaline washing tower 5 through a quenching tower 3. The output end of the quenching tower 3 is connected with the lower part of the alkaline washing tower 5. The middle part of the alkaline washing tower 5 is provided with an alkaline washing filler 4. An alkaline cleaning spraying system 7 is arranged above the alkaline cleaning filler 4. A demister 8 is arranged above the alkaline washing spray system 7. The bottom of the alkaline washing tower 5 is connected with an alkaline washing spray system 7 through an alkaline washing tower circulating pump 6.
As shown in fig. 1, in chemical production, such as fluorine-containing catalyst production, a great amount of fluoride-containing VOCs gas with a temperature of 250 ℃ is generated in the processes of drying, roasting and activating the catalyst carrier, and the catalytic oxidation method can be used for treating VOCs and fluoride in the exhaust gas. The catalytic oxidation reactor 1 is provided with a catalytic oxidation catalyst 2. After the waste gas enters the catalytic oxidation reactor 1, the temperature of the waste gas is raised to about 350-450 ℃. After incineration, the waste gas containing HF enters a quenching tower 3 to be cooled to about 80 ℃, and the waste gas enters an alkaline washing tower 5 to be washed by alkali liquor. The alkaline washing tower is provided with a filler 4, the bottom of the tower is provided with an alkaline liquor circulating pump 6, and the upper part of the tower is provided with an alkaline liquor spraying system 7. And demisting waste gas after alkaline washing by a demister 8, and discharging the waste gas after alkaline washing up to the standard.
Claims (1)
1. A high temperature fluorine-containing VOCs exhaust treatment device which is characterized in that: the device comprises a catalytic oxidation reactor (1) and an alkaline washing tower (5), wherein the catalytic oxidation reactor (1) is connected with the alkaline washing tower (5) through a quenching tower (3);
the output of quench tower (3) links to each other with the lower part of alkali wash tower (5), and the middle part of alkali wash tower (5) is equipped with alkali wash filler (4), and the top of alkali wash filler (4) is equipped with alkali wash spraying system (7), and the top of alkali wash spraying system (7) is equipped with defroster (8), and the bottom of alkali wash tower (5) is passed through alkali wash tower circulating pump (6) and is linked to each other with alkali wash spraying system (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320658554.5U CN220861099U (en) | 2023-03-30 | 2023-03-30 | High temperature fluorine-containing VOCs exhaust treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320658554.5U CN220861099U (en) | 2023-03-30 | 2023-03-30 | High temperature fluorine-containing VOCs exhaust treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220861099U true CN220861099U (en) | 2024-04-30 |
Family
ID=90816610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320658554.5U Active CN220861099U (en) | 2023-03-30 | 2023-03-30 | High temperature fluorine-containing VOCs exhaust treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220861099U (en) |
-
2023
- 2023-03-30 CN CN202320658554.5U patent/CN220861099U/en active Active
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