CN212283463U - Oil chemical refining tail gas purification device - Google Patents
Oil chemical refining tail gas purification device Download PDFInfo
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- CN212283463U CN212283463U CN202020425826.3U CN202020425826U CN212283463U CN 212283463 U CN212283463 U CN 212283463U CN 202020425826 U CN202020425826 U CN 202020425826U CN 212283463 U CN212283463 U CN 212283463U
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Abstract
The utility model relates to a refined tail gas cleanup unit of grease chemical industry belongs to grease chemical industry tail gas treatment technical field. The tail gas purification device for the chemical refining of the grease comprises an ultra-efficient atomized alkali absorption tower, a high-density static filter, a decomposition tower, a high-efficiency mixed flow catalytic oxidation tower and a gas-liquid separator which are sequentially connected, wherein the decomposition tower is connected with an ion generator; the inside of the decomposition tower is divided into a low-temperature state ion decomposition area and a low-temperature state ion generation area from top to bottom; the inside of the high-efficiency mixed flow catalytic oxidation tower is provided with a solid-phase packing layer. The utility model has the advantages of being scientific and reasonable in design, the simple operation has reduced manufacturing cost, has improved purifying effect.
Description
Technical Field
The utility model relates to a refined tail gas cleanup unit of grease chemical industry belongs to grease chemical industry tail gas treatment technical field.
Background
The concentration of VOCs in the tail gas of the oil chemical refinery is generally 400-800mg/m3The oil and gas content is high, and the taste is irritating and unpleasant. At present, no effective targeted treatment equipment and process system exist for tail gas treatment of refineries in China, and common processes which are not suitable for the working condition are generally adopted, such as: biological methods, spraying methods, combustion methods, plasma or photo-oxidation methods, activated carbon adsorption methods and the like have few successful cases, and the stable operation effect on the refining tail gas with high VOCs and high oil gas is difficult to achieve because the processes generally have the following problems:
the high-concentration impact resistance is difficult to be realized by adopting a conventional biological method; the VOCs removing efficiency is not obvious by a pure spraying method, a plasma method or a photo-oxidation method, and meanwhile, the damage of oil gas substances to equipment is large; the investment and operation costs of the combustion method and the activated carbon adsorption method are too high, and meanwhile, the combustion method has too large explosion risk and high danger coefficient; the activated carbon adsorption method causes the high cost of hazardous waste disposal and produces secondary pollution.
In conclusion, a safe and efficient exhaust gas purification treatment device needs to be developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a refined tail gas cleanup unit of grease chemical industry, its design scientific and reasonable, the simple operation has reduced manufacturing cost, has improved purifying effect.
The tail gas purification device for the chemical refining of the grease comprises an ultra-efficient atomized alkali absorption tower, a high-density static filter, a decomposition tower, a high-efficiency mixed flow catalytic oxidation tower and a gas-liquid separator which are sequentially connected, wherein the decomposition tower is connected with an ion generator; the inside of the decomposition tower is divided into a low-temperature state ion decomposition area and a low-temperature state ion generation area from top to bottom; the inside of the high-efficiency mixed flow catalytic oxidation tower is provided with a solid-phase packing layer.
And an ultra-efficient atomizing spray head is arranged above the inside of the ultra-efficient atomized alkali absorption tower.
And an efficient mixed flow spray head is arranged above the efficient mixed flow catalytic oxidation tower.
The high-density static filter is internally provided with a plurality of layers of wire meshes, preferably 3-5 layers.
Preferably, the thickness of the solid phase filler layer is 180-220 mm.
Preferably, the gas-liquid separator is connected with the induced draft fan.
The exhaust gas components of the refining tail gas are complex and contain formaldehyde, organic acid and the like. The single pure device is difficult to achieve standard emission. When the utility model is used, the induced draft fan is started, the refined tail gas firstly passes through the ultra-efficient atomized alkali absorption tower, most of oil gas in the waste gas is absorbed, and the concentration of the gas is preliminarily reduced; the waste gas after passing through the ultra-efficient atomized alkali absorption tower contains heavier water vapor, and the water and condensed oil gas are removed through a high-density static filter, so that the operating condition with lower relative humidity is provided for a subsequent processing unit; then the waste gas passes through a decomposition tower, in a low-temperature state ion decomposition area, active particles such as high-energy electrons, free radicals and the like react with pollutants in the waste gas, so that pollutant molecules are decomposed in a very short time, and subsequent various reactions are carried out to achieve the purpose of degrading the pollutants; then the waste gas and partial oxidation substances generated by the decomposition tower enter the high-efficiency mixed flow catalytic oxidation tower, liquid-phase compound oxidants (oxidants, flocculating agents and the like) sprayed out in a divergent mist shape through the high-efficiency mixed flow spray head are fully contacted on the surface of the solid-phase filler, and pollution factors in the waste gas are fully decomposed under the catalytic action of the multi-medium catalyst, so that pollutants such as VOCs and the like are removed; and finally, the waste gas enters a gas-liquid separator for gas-liquid separation, and the tail gas reaching the standard is discharged.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the targeted treatment effect on the tail gas of a refinery is proved by practical cases that the removal rate of VOCs is as high as 90%, the removal rate of odor concentration is 95%, the overall removal efficiency is 2 times that of a spraying method and an ion method, and the exhaust gas completely reaches related standard indexes;
(2) running cost of the whole deviceLow, generally 0.001-0.002 yuan/m3About 1/20 of the running cost of the combustion method and the activated carbon method;
(3) the equipment is integrally skid-mounted equipment, is convenient to install and can be directly connected with the pipe orifice;
(4) the debugging period is only 2-3 days, which is about 1/10 of the debugging period of the biological method and the combustion method;
(5) the service life is long, and can reach 5-10 years generally;
(6) safe and environment-friendly, and has no secondary pollution.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. an ultra-efficient atomized alkali absorption tower; 2. an ultra-efficient atomizer; 3. a high density static filter; 4. a decomposition tower; 5. a low temperature state ion decomposition zone; 6. an ion generator; 7. a high-efficiency mixed flow catalytic oxidation tower; 8. a high-efficiency mixed flow spray head; 9. a solid phase packing layer; 10. a gas-liquid separator; 11. an induced draft fan; 12. a low temperature state ion generation area.
Detailed Description
The present invention is further described with reference to the following examples, which are not intended to limit the practice of the invention.
As shown in fig. 1, the tail gas purification device for oil chemical refining of the present invention comprises an ultra-high efficiency atomized alkali absorption tower 1, a high density static filter 3, a decomposition tower 4, a high efficiency mixed flow catalytic oxidation tower 7 and a gas-liquid separator 10 which are connected in sequence, wherein the decomposition tower 4 is connected with an ion generator 6; the inside of the decomposition tower 4 is divided into a low-temperature state ion decomposition area 5 and a low-temperature state ion generation area 12 from top to bottom; a solid-phase packing layer 9 is arranged in the high-efficiency mixed-flow catalytic oxidation tower 7.
And an ultra-efficient atomizing spray head 2 is arranged above the inside of the ultra-efficient atomized alkali absorption tower 1.
And a high-efficiency mixed flow spray head 8 is arranged above the high-efficiency mixed flow catalytic oxidation tower 7.
And 5 layers of silk screens are arranged in the high-density static filter 3.
The thickness of the solid-phase filler layer 9 is 200 mm.
The gas-liquid separator 10 is connected with an induced draft fan 11.
When the utility model is applied, the induced draft fan 11 is started, the refined tail gas firstly passes through the super-efficient atomized alkali absorption tower 1, most of oil gas in the waste gas is absorbed, and the concentration of the gas is preliminarily reduced; the waste gas after passing through the ultra-efficient atomized alkali absorption tower 1 contains heavier water vapor, and the water and condensed oil gas are removed through a high-density static filter 3, so that the running condition with lower relative humidity is provided for a subsequent processing unit; then the waste gas passes through a decomposition tower 4, in a low-temperature state ion decomposition area 5, active particles such as high-energy electrons, free radicals and the like react with pollutants in the waste gas, so that pollutant molecules are decomposed in a very short time, and subsequent various reactions are carried out to achieve the purpose of degrading the pollutants; then the waste gas and partial oxidation substances generated by the decomposition tower 4 enter a high-efficiency mixed flow catalytic oxidation tower 7, liquid-phase compound oxidants (oxidants, flocculating agents and the like) sprayed out in a divergent fog shape through a high-efficiency mixed flow spray nozzle 8 are in full contact with the surface of a solid-phase filler, and pollution factors in the waste gas are fully decomposed under the catalytic action of a multi-medium catalyst, so that pollutants such as VOCs and the like are removed; and finally, the waste gas enters a gas-liquid separator 10 for gas-liquid separation, and the tail gas reaching the standard is discharged.
Example 1
The oxidant sprayed out in the form of a divergent mist through the high-efficiency mixed flow spray nozzle 8 is hydrogen peroxide.
The refined tail gas contains high oil gas which is macromolecular organic matter, the removal efficiency of the ultra-efficient atomization alkali absorption tower reaches 82%, meanwhile, oil gas condensate gas is subjected to secondary filtration through a high-density static filter, the oil gas removal efficiency reaches 11%, 90% of water is also filtered, and finally the exhaust gas is basically free of oil gas.
Example 2
The oxidant sprayed out in the form of dispersed mist through the high-efficiency mixed flow spray nozzle 8 is hydrogen peroxide, and in addition, a flocculating agent ferrous sulfate is added.
The concentration of VOCs in the refining tail gas inlet gas is 480mg/m3The odor concentration was 8000 (dimensionless).
Device purify the back, VOCs gets rid of efficiency and reaches 90%, the foul smell concentration gets rid of efficiency and is 95%. The exhaust temperature was 28 ℃.
Claims (6)
1. The utility model provides a refined tail gas cleanup unit of grease chemical industry which characterized in that: the device comprises an ultra-high efficiency atomized alkali absorption tower (1), a high-density static filter (3), a decomposition tower (4), a high-efficiency mixed flow catalytic oxidation tower (7) and a gas-liquid separator (10) which are connected in sequence, wherein the decomposition tower (4) is connected with an ion generator (6); the interior of the decomposition tower (4) is divided into a low-temperature state ion decomposition area (5) and a low-temperature state ion generation area (12) from top to bottom; a solid-phase packing layer (9) is arranged in the high-efficiency mixed-flow catalytic oxidation tower (7).
2. The oil chemical refining tail gas purification device according to claim 1, characterized in that: an ultra-efficient atomizing nozzle (2) is arranged above the inside of the ultra-efficient atomized alkali absorption tower (1).
3. The oil chemical refining tail gas purification device according to claim 1, characterized in that: an efficient mixed flow spray head (8) is arranged above the efficient mixed flow catalytic oxidation tower (7).
4. The oil chemical refining tail gas purification device according to claim 1, characterized in that: a plurality of layers of silk screens are arranged in the high-density static filter (3).
5. The oil chemical refining tail gas purification device according to claim 1, characterized in that: the thickness of the solid phase filler layer (9) is 180-220 mm.
6. The oil chemical refining tail gas purification device according to claim 1, characterized in that: the gas-liquid separator (10) is connected with the induced draft fan (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425826.3U CN212283463U (en) | 2020-03-27 | 2020-03-27 | Oil chemical refining tail gas purification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425826.3U CN212283463U (en) | 2020-03-27 | 2020-03-27 | Oil chemical refining tail gas purification device |
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| CN212283463U true CN212283463U (en) | 2021-01-05 |
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| CN202020425826.3U Active CN212283463U (en) | 2020-03-27 | 2020-03-27 | Oil chemical refining tail gas purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114377519A (en) * | 2022-01-12 | 2022-04-22 | 南通腾龙化工科技有限公司 | Novel waste gas comprehensive treatment device with high safety and treatment method thereof |
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2020
- 2020-03-27 CN CN202020425826.3U patent/CN212283463U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114377519A (en) * | 2022-01-12 | 2022-04-22 | 南通腾龙化工科技有限公司 | Novel waste gas comprehensive treatment device with high safety and treatment method thereof |
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