CN210699528U - Waste gas treatment system for chlor-alkali industry - Google Patents
Waste gas treatment system for chlor-alkali industry Download PDFInfo
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- CN210699528U CN210699528U CN201921561006.0U CN201921561006U CN210699528U CN 210699528 U CN210699528 U CN 210699528U CN 201921561006 U CN201921561006 U CN 201921561006U CN 210699528 U CN210699528 U CN 210699528U
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Abstract
The utility model discloses a waste gas treatment system in the chlor-alkali industry, which comprises a purification absorption tower for absorbing alcohols, aldehydes and acids, a filler absorption tower, a light Fenton oxidation tower for taking out malodorous substances and an exhaust funnel; the air outlet of the purification absorption tower is connected with the air inlet of the packing absorption tower, the air outlet of the packing absorption tower is connected with the air inlet of the light Fenton oxidation tower, and the air outlet of the light Fenton oxidation tower is connected with the exhaust funnel. The utility model discloses earlier through substances such as alcohols, aldehyde, acidics in the purification absorption tower absorption waste gas, then through packing absorption tower further processing, absorb the malodorous substance in the oxidation waste gas through light Fenton oxidation tower at last, a whole system simple structure, can effectively solve chlor-alkali trade exhaust pollution problem.
Description
Technical Field
The utility model belongs to the technical field of exhaust treatment device, especially, relate to a chlor-alkali industry exhaust treatment system.
Background
The chlor-alkali industry, the products involved comprise: caustic soda, polyvinyl chloride, hydrochloric acid, liquid chlorine, calcium chloride, barium chloride, ferric trichloride, bleaching agent, methane chloride, epoxy compound, chlorine solvent, chlorinated paraffin, metal sodium, sodium chlorate, straight-chain hydrocarbon, aromatic chloride and other organic and inorganic chemical products of over 200 kinds. At present, the capacity and the yield of the chlor-alkali industry in China are listed first in the world, in recent years, the chlor-alkali industry in China is rapidly developed, the production capacity of original chlor-alkali enterprises is expanded, some new enterprises are put into production in succession, the capacity is rapidly improved, and the chlor-alkali industry presents a situation of accelerating the development towards the aspects of large scale and high technical content. The production capacity of the Chinese chlor-alkali industry is rapidly improved, the technology is greatly developed, the number of large-scale devices is increased, the technical level of the devices is improved, and the Chinese chlor-alkali industry is in a large-scale and high-tech development situation.
Most of the chlorine alkali industry manufacturers have various organic gases in the production process, and main components of the gases are formaldehyde, propionaldehyde, butyraldehyde, formic acid, propionic acid, ethanol, triethylamine and particles, which are difficult to treat. The components cause air pollution along with the emission of exhaust gas, the components in the exhaust gas are complex, and the complex exhaust gas components cannot be completely treated or are treated with low efficiency by a single process. Therefore, it is necessary to develop a new exhaust gas treatment system which is easy to operate and has low investment and operation cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of prior art, improve the treatment effeciency, guarantee that waste gas stably reaches national relevant standard for a long time after environmental protection equipment handles, the utility model aims to provide a chlor-alkali trade exhaust treatment system.
In order to achieve the purpose, the utility model provides a technical scheme does:
the utility model relates to a waste gas treatment system in the chlor-alkali industry, which comprises a purification absorption tower for absorbing alcohols, aldehydes and acids, a filler absorption tower, a light Fenton oxidation tower for taking out malodorous substances and an exhaust funnel; the air outlet of the purification absorption tower is connected with the air inlet of the packing absorption tower, the air outlet of the packing absorption tower is connected with the air inlet of the light Fenton oxidation tower, and the air outlet of the light Fenton oxidation tower is connected with the exhaust funnel.
Preferably, the purification absorption tower comprises a first tower body and a first rotational flow plate, a first air outlet is formed in the top of the first tower body, and a first air inlet is formed in the side part of the first tower body; the first spiral-flow plates are arranged in the first tower body at intervals, a first spraying system is arranged above the first spiral-flow plates, and a first demisting device is arranged above the first spraying system; the first spiral-flow plate is provided with a first downcomer below, one port of the first downcomer is arranged at the joint of the first spiral-flow plate and the inner wall of the first tower body, the other port of the first downcomer is inclined downwards to the center of the first tower body, a first circulating water tank is arranged on the side of the first tower body and communicated with the bottom of the first tower body, and a first spraying system is connected with the first circulating water tank.
Preferably, the filler absorption tower comprises a second tower body and a plurality of layers of filler adsorption devices, a second air outlet is formed in the top of the second tower body, a second air inlet is formed in the side portion of the first tower body, and the second air inlet is connected with the first air outlet; the filler adsorption device is arranged in the second tower body and comprises a second spraying system for spraying liquid into the second tower body, a filler layer and a supporting plate for supporting the filler layer; a second demisting device is arranged above the uppermost layer of the filler adsorption device; and a second circulating water tank is arranged on the side of the second tower body, the second circulating water tank is communicated with the bottom of the second tower body, and a second spraying system is connected with the second circulating water tank.
Preferably, the optical Fenton oxidation tower comprises a third tower body, a second rotational flow plate and an electrodeless ultraviolet lamp, wherein a third air outlet is formed in the top of the third tower body, a third air inlet is formed in the side part of the third tower body, and the third air inlet is connected with the second air outlet; a plurality of second rotational flow plates are arranged and are arranged in the third tower body at intervals, a third spraying system is arranged above the second rotational flow plates, and a third demisting device is arranged above the third spraying system; the electrodeless ultraviolet lamp is arranged below the third demisting device and the second cyclone plate; and a second downcomer is arranged below the second cyclone plate, one port of the second downcomer is arranged at the joint of the second cyclone plate and the inner wall of the third tower body, the other port of the second downcomer is inclined downwards to the center of the third tower body, a third circulating water tank is arranged on the side of the third tower body, the third circulating water tank is communicated with the bottom of the third tower body, and a third spraying system is connected with the third circulating water tank. The Fenton oxidation tower is a Fenton oxidation tower, and waste gas is treated by combining ultraviolet light with the Fenton oxidation tower to perform catalytic oxidation.
Preferably, said first tower side is provided with a plurality of first sight glasses.
Preferably said second tower side is provided with a plurality of second sight glasses.
Preferably said third tower side is provided with a plurality of third sight glasses.
Preferably, first whirl board include first support, a plurality of first blades and first middle blind plate, first blade is located between first support and the first middle blind plate.
Preferably, the second whirl plate comprises a second support, a plurality of second blades and a second middle blind plate, and the second blades are arranged between the second support and the second middle blind plate.
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
1. the utility model discloses earlier through substances such as alcohols, aldehyde, acidics in the purification absorption tower absorption waste gas, then through packing absorption tower further processing, absorb the malodorous substance in the oxidation waste gas through light Fenton oxidation tower at last, a whole system simple structure, can effectively solve chlor-alkali trade exhaust pollution problem.
2. The utility model provides a purification absorption tower, filler absorption tower and light Fenton oxidation tower have that corrosion resistance is strong, and intensity is high, body light in weight, rational in infrastructure, the difficult ageing, non-deformable and the easy advantage of maintaining of material.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of a middle purification absorption tower of the present invention;
FIG. 3 is a schematic structural view of a packed absorption tower according to the present invention;
FIG. 4 is a schematic structural view of the optical Fenton oxidation tower of the present invention;
FIG. 5 is a schematic structural view of a first whirl plate of the present invention;
fig. 6 is a schematic structural view of the second whirl plate of the present invention.
Description of the labels in the schematic:
1-a purification absorption tower; 2-a packed absorption column; 3-light Fenton oxidation tower; 4-an exhaust funnel; 11-a first tower; 12-a first swirl plate; 13-a first spray system; 14-a first defogging device; 15-a first downcomer; 16-a first circulation tank; 17-a first air outlet; 18-a first air inlet; 19-first sight glass; 21-a second tower; 22-a second spray device; 23-a second air outlet; 24-a second air inlet; 25-a second defogging device; 26-a second circulation water tank; 27-a second sight glass; 31-a third tower; 32-a second swirl plate; 33-electrodeless ultraviolet lamp; 34-a third air outlet; 35-a third air inlet; 36-a third spray system; 37-a third defogging device; 38-a second downcomer; 39-a third circulating water tank; 30-third sight glass; 121-a first bracket; 122-a first blade; 123-a first intermediate blind; 221-a second spray system; 222-a layer of packing; 223-a support plate; 321-a second bracket; 322-a second blade; 323-second intermediate blind.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
As shown in fig. 1, the present embodiment relates to a waste gas treatment system in the chlor-alkali industry, which comprises a purification absorption tower 1 for absorbing alcohols, aldehydes and acids, a packing absorption tower 2, a light Fenton oxidation tower 3 for removing malodorous substances, and an exhaust stack 4; the air outlet of the purification absorption tower 1 is connected with the air inlet of the filler absorption tower 2, the air outlet of the filler absorption tower 2 is connected with the air inlet of the light Fenton oxidation tower 3, and the air outlet 3 of the light Fenton oxidation tower is connected with the exhaust funnel 4. Firstly, absorbing substances such as alcohols, aldehydes and acids in the waste gas through a purification absorption tower 1, then further treating the waste gas through a filler absorption tower 2, finally absorbing malodorous substances in the oxidized waste gas through a light Fenton oxidation tower 3, and conveying the treated waste gas to an exhaust funnel 4 with the height of 15m through a draught fan to reach the standard and discharge; the whole system has simple structure and can effectively solve the problem of waste gas pollution in the chlor-alkali industry. The purification absorption tower 1 and the filler absorption tower 2 can utilize the effluent of the aerobic tank of the sewage station as absorption liquid, thereby improving the absorption efficiency, saving water resources and saving the operation cost.
As shown in fig. 2, the purifying and absorbing tower 1 includes a first tower body 11 and a first rotational flow plate 12, a first air outlet 17 is disposed at the top of the first tower body 11, and a first air inlet 18 is disposed at the side of the first tower body 11; the number of the first rotational flow plates 12 is three, the first rotational flow plates are arranged in the first tower body 11 at intervals, a first spraying system 13 is arranged above the uppermost first rotational flow plate 12, and a first demisting device 14 is arranged above the first spraying system 13; a first downcomer 15 is arranged below the first cyclone plate 12, one end of the first downcomer 15 is arranged at the joint of the first cyclone plate 12 and the inner wall of the first tower body 11, the other end of the first downcomer is obliquely and downwardly deviated to the center of the first tower body 11, a first circulating water tank 16 is arranged on the side of the first tower body 11, the first circulating water tank 16 is communicated with the bottom of the first tower body 11, a first spraying system 13 is connected with the first circulating water tank 16, and a first viewing mirror 19 is arranged on the side of the first tower body 11.
As shown in fig. 5, the first cyclone plate 12 includes a first support 121, a plurality of first blades 122 and a first intermediate blind plate 123, and the first blades 122 are disposed between the first support 121 and the first intermediate blind plate 123.
As shown in fig. 3, the filler absorption tower 2 includes a second tower body 21 and two layers of filler adsorption devices 22, the second tower body 21 has a second air outlet 23 at the top, the first tower body has a second air inlet 24 at the side, and the second air inlet 24 is connected to the first air outlet 17; the filler adsorption device 22 is arranged in the second tower body 21, and the filler adsorption device 22 comprises a second spraying system 221 for spraying liquid into the second tower body 21, a filler layer 222 and a support plate 223 for supporting the filler layer; a second demisting device 25 is arranged above the upper-layer filler adsorption device 22; the second circulating water tank 26 is arranged on the side of the second tower body 21, the second circulating water tank 26 is communicated with the bottom of the second tower body 21, the second spraying system 221 is connected with the second circulating water tank 26, the second viewing mirror 27 is arranged on the side of the second tower body 21, a Phi 25 pall ring is used as an upper-layer packing layer 222, and a Phi 73 Taylor rosette is used as a lower-layer packing layer 222.
As shown in fig. 4, the optical Fenton oxidation tower 3 includes a third tower body 31, a second cyclone plate 32 and an electrodeless ultraviolet lamp 33, wherein a third air outlet 34 is arranged at the top of the third tower body 31, a third air inlet 35 is arranged at the side of the third tower body, the third air inlet 35 is connected with the second air outlet 23, and the third air outlet 34 is connected with a fan in the exhaust funnel 4; three second cyclone plates 32 are arranged and are arranged in the third tower body 31 at intervals, a third spraying system 36 is arranged above the second cyclone plates 32, and a third demisting device 37 is arranged above the third spraying system 36; the electrodeless ultraviolet lamp 33 is arranged below the third demisting device 37 and the second cyclone plate 32; a second downcomer 38 is arranged below the second cyclone plate 32, one end of the second downcomer 38 is arranged at the joint of the second cyclone plate 32 and the inner wall of the third tower body 31, the other end of the second downcomer is inclined downwards to the center of the third tower body 31, a third circulating water tank 39 is arranged on the side of the third tower body 31, the third circulating water tank 39 is communicated with the bottom of the third tower body 31, a third spraying system 36 is connected with the third circulating water tank 39, and a third viewing mirror 30 is further arranged on the side of the third tower body 31.
As shown in fig. 6, the second cyclone plate 32 includes a second support 321, a plurality of second vanes 322 and a second intermediate blind plate 323, and the second vanes 322 are disposed between the second support 321 and the second intermediate blind plate 323.
The utility model discloses the theory of operation:
the method comprises the following steps: waste gas gets into the bottom of first tower body 11 from first air intake 18, and waste gas is from up passing through three-layer first whirl board 12 down, and first spraying system 13 sprays, and it fully contacts with waste gas to the scavenging solution, and during particulate matter transferred to first water tank 16 in the waste gas to absorb easily water-soluble's material such as alcohols, aldehydes, acidics in the waste gas, waste gas is after 14 gas-liquid separation of first defogging device at last, discharges from first air outlet 17.
Step two: waste gas enters the bottom of the second tower body 21 from the second air inlet 24, passes through the taylor flower packing layer on the lower layer from bottom to top, passes through the pall ring packing layer 222 on the upper layer for double-layer spraying absorption treatment, and is discharged from the second air outlet 23 after being subjected to gas-liquid separation by the second demisting device 25.
Step three: waste gas enters the bottom of the third tower body 31 from the third air inlet 35, the waste gas passes through the three layers of third rotational flow plates 32 from bottom to top, a Fenton reagent sprayed by the third spraying system 36 is in countercurrent contact with the gas to absorb malodorous substances in the oxidized waste gas, the reaction is accelerated under the photocatalysis of an electrodeless ultraviolet lamp to remove the malodorous substances, and finally the waste gas is discharged from the third air outlet 34 after being subjected to gas-liquid separation by the third demisting device 37.
Step four: the treated waste gas is sent to a 15m exhaust funnel 4 through a draught fan to be discharged after reaching the standard.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is merely an embodiment of the present invention, and the actual structure is not limited thereto. Therefore, those skilled in the art should understand that they can easily and effectively implement the present invention without departing from the spirit and scope of the present invention.
Claims (9)
1. A waste gas treatment system in the chlor-alkali industry is characterized by comprising a purification absorption tower for absorbing alcohols, aldehydes and acids, a filler absorption tower, a light Fenton oxidation tower for removing malodorous substances and an exhaust funnel; the air outlet of the purification absorption tower is connected with the air inlet of the packing absorption tower, the air outlet of the packing absorption tower is connected with the air inlet of the light Fenton oxidation tower, and the air outlet of the light Fenton oxidation tower is connected with the exhaust funnel.
2. The chlor-alkali industry waste gas treatment system of claim 1, wherein said absorber comprises a first tower and a first cyclone plate, wherein a first air outlet is provided at the top of said first tower, and a first air inlet is provided at the side of said first tower; the first spiral-flow plates are arranged in the first tower body at intervals, a first spraying system is arranged above the first spiral-flow plates, and a first demisting device is arranged above the first spraying system; the first spiral-flow plate is provided with a first downcomer below, one port of the first downcomer is arranged at the joint of the first spiral-flow plate and the inner wall of the first tower body, the other port of the first downcomer is inclined downwards to the center of the first tower body, a first circulating water tank is arranged on the side of the first tower body and communicated with the bottom of the first tower body, and a first spraying system is connected with the first circulating water tank.
3. The chlor-alkali industry waste gas treatment system of claim 2, wherein said filler absorption tower comprises a second tower and a multi-layer filler adsorption unit, wherein a second air outlet is provided at the top of said second tower, a second air inlet is provided at the side of said first tower, and said second air inlet is connected to said first air outlet; the filler adsorption device is arranged in the second tower body and comprises a second spraying system for spraying liquid into the second tower body, a filler layer and a supporting plate for supporting the filler layer; a second demisting device is arranged above the uppermost layer of the filler adsorption device; and a second circulating water tank is arranged on the side of the second tower body, the second circulating water tank is communicated with the bottom of the second tower body, and a second spraying system is connected with the second circulating water tank.
4. The chlor-alkali industry waste gas treatment system of claim 3, wherein said light Fenton oxidation tower comprises a third tower body, a second cyclone plate and an electrodeless ultraviolet lamp, wherein a third air outlet is arranged at the top of said third tower body, a third air inlet is arranged at the side of said third tower body, and said third air inlet is connected to said second air outlet; a plurality of second rotational flow plates are arranged and are arranged in the third tower body at intervals, a third spraying system is arranged above the second rotational flow plates, and a third demisting device is arranged above the third spraying system; the electrodeless ultraviolet lamp is arranged below the third demisting device and the second cyclone plate; and a second downcomer is arranged below the second cyclone plate, one port of the second downcomer is arranged at the joint of the second cyclone plate and the inner wall of the third tower body, the other port of the second downcomer is inclined downwards to the center of the third tower body, a third circulating water tank is arranged on the side of the third tower body, the third circulating water tank is communicated with the bottom of the third tower body, and a third spraying system is connected with the third circulating water tank.
5. The chlor-alkali industry waste gas treatment system of claim 2, wherein said first tower side is provided with a plurality of first sight glasses.
6. The chlor-alkali industry waste gas treatment system of claim 3, wherein said second tower side is provided with a plurality of second sight glasses.
7. The chlor-alkali industry waste gas treatment system of claim 4, wherein said third tower side is provided with a plurality of third sight glasses.
8. The chlor-alkali industry waste gas treatment system of claim 2, wherein said first swirl plate comprises a first support, a plurality of first vanes and a first intermediate blind plate, said first vanes being disposed between said first support and said first intermediate blind plate.
9. The chlor-alkali industry waste gas treatment system of claim 4, wherein said second swirl plate comprises a second support, a plurality of second vanes and a second intermediate blind plate, said second vanes being disposed between said second support and said second intermediate blind plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561006.0U CN210699528U (en) | 2019-09-19 | 2019-09-19 | Waste gas treatment system for chlor-alkali industry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561006.0U CN210699528U (en) | 2019-09-19 | 2019-09-19 | Waste gas treatment system for chlor-alkali industry |
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| CN210699528U true CN210699528U (en) | 2020-06-09 |
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| CN201921561006.0U Active CN210699528U (en) | 2019-09-19 | 2019-09-19 | Waste gas treatment system for chlor-alkali industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116850734A (en) * | 2023-07-26 | 2023-10-10 | 广东省珠海市质量计量监督检测所 | Novel waste gas treatment process |
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2019
- 2019-09-19 CN CN201921561006.0U patent/CN210699528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116850734A (en) * | 2023-07-26 | 2023-10-10 | 广东省珠海市质量计量监督检测所 | Novel waste gas treatment process |
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