CN209752550U - Multistage absorbing device of chlorine-containing waste gas - Google Patents
Multistage absorbing device of chlorine-containing waste gas Download PDFInfo
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- CN209752550U CN209752550U CN201920093896.0U CN201920093896U CN209752550U CN 209752550 U CN209752550 U CN 209752550U CN 201920093896 U CN201920093896 U CN 201920093896U CN 209752550 U CN209752550 U CN 209752550U
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Abstract
The utility model discloses a multistage absorbing device of chlorine waste gas belongs to dichloro isocyanuric acid sodium preparation equipment technical field, be equipped with the jar body that absorption liquid import, lower part were crossed out including upper portion, the internal portion of jar is equipped with rabbling mechanism, top and is equipped with inlet distributor and exhaust vent, and inlet distributor's inlet manifold lower extreme is equipped with the bubbler that soaks in the absorption liquid, establishes multistage absorption structure in the bubbler. Chlorine-containing waste gas is injected into the tank body through the gas inlet distributor, the chlorine-containing waste gas enters the bubbler from the gas inlet branch pipe, the chlorine-containing waste gas can be fully contacted with the absorption liquid by virtue of a multi-stage absorption structure in the bubbler, and chlorine in the chlorine-containing waste gas is dissolved into the absorption liquid; the absorption liquid for absorbing chlorine is stirred by a stirring mechanism, and the liquid level in the tank body is kept unchanged by the absorption liquid through an absorption liquid inlet and an absorption liquid overflow outlet. The absorption efficiency of the utility model is up to more than 90 percent, the chlorine gas is recycled, the alkali consumption of the final-stage alkali liquor absorption is reduced, and the cost is saved.
Description
Technical Field
The utility model belongs to the technical field of dichloro isocyanuric acid sodium preparation equipment, especially, relate to a multistage absorbing device of chlorine-containing waste gas.
Background
Sodium dichloroisocyanurate is a high-efficiency disinfectant, has good killing effect on escherichia coli, streptococcus, staphylococcus, bacillus subtilis black variant spores and hepatitis viruses, and can be widely applied to medical sanitation, epidemic focus and preventive disinfection; meanwhile, the disinfectant is an ideal disinfectant product for families, hotels, restaurants and public places. When sodium dichloroisocyanurate is used for disinfection, aqueous solution can be prepared for soaking, spraying and wiping; since the aqueous solution is not suitable for long-term storage, it is better to be prepared with the water solution at the same time to prevent the efficacy from being reduced.
At present, the sodium dichloroisocyanurate is produced mainly by a sodium method: cyanuric acid and mineral powder are used as raw materials, chloridized by chlorine gas to prepare dichloroisocyanuric acid, then the dichloroisocyanuric acid and sodium bicarbonate are subjected to solid-solid reaction, and then the finished product is obtained after drying, granulation and packaging. Wherein, in the chlorine chlorination link of the sodium dichloroisocyanurate, chlorine-containing waste gas is emitted and needs to be absorbed. At present, a packed tower is generally adopted for absorption, and at least three stages of packing are used for absorption, the absorption efficiency is 45%, and the final stage uses a large amount of alkali for absorption to reach the emission standard. The method has low chlorine recovery efficiency, large alkali liquor consumption and increased production cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a multistage absorbing device of chlorine waste gas aims at solving among the above-mentioned prior art chlorine waste gas and adopts the technical problem that packed tower absorption efficiency is low, the alkali lye quantity is big.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
A chlorine-containing waste gas multistage absorption device comprises a tank body for containing absorption liquid, wherein the upper part of the tank body is provided with an absorption liquid inlet, the lower part of the tank body is provided with an absorption liquid overflow outlet, and a stirring mechanism for mixing the absorption liquid is arranged in the tank body; the top of the tank body is provided with an air inlet distributor and a tail gas discharge port, the lower end of an air inlet branch pipe of the air inlet distributor is provided with a bubbler immersed in the absorption liquid, and the bubbler is internally provided with a multi-stage absorption structure; the absorption liquid overflow outlet is arranged above the bubbler.
Preferably, the stirring mechanism comprises a motor, a stirring shaft and stirring blades, the motor is arranged at the top of the tank body, an output shaft of the motor is coaxially fixed with the stirring shaft, the stirring blades are fixed at the lower end of the stirring shaft, and the stirring blades are immersed in the absorption liquid.
Preferably, the stirring shaft is matched with the top of the tank body through a liquid sealing piece.
Preferably, the air inlet distributor comprises a polygonal air inlet main pipe and a plurality of air inlet branch pipes, the air inlet main pipe is arranged on the top of the tank body, the upper ends of the air inlet branch pipes are communicated with the air inlet main pipe, and the lower ends of the air inlet branch pipes are communicated with the bubbler; the air inlet of the air inlet main pipe is arranged on the outer side of the air inlet main pipe and is arranged in a staggered mode with the tail gas discharge port.
Preferably, the air inlet manifold is hexagonal, and an air inlet of the air inlet manifold is arranged at one corner part; the number of the air inlet branch pipes is 12, the 12 air inlet branch pipes are arranged on six sides of the air inlet main pipe in six groups, and 2 air inlet branch pipes of each group are arranged at intervals.
Preferably, the top of the air inlet main pipe is provided with a cleaning port, and the cleaning port is provided with a valve.
Preferably, the bubbler comprises a shell and a multi-stage absorption structure, wherein the multi-stage absorption structure comprises a first-stage absorption pipe, a second-stage absorption pipe and a third-stage absorption net, the first-stage absorption pipe and the second-stage absorption pipe are arranged in the shell, and the third-stage absorption net is arranged at the bottom of the shell; and a plurality of meshes for exhausting are uniformly distributed on the side walls of the first-stage absorption pipe and the second-stage absorption pipe and the third-stage absorption net.
Preferably, the upper end of the primary absorption pipe is communicated with the air inlet branch pipe, the upper end of the secondary absorption pipe is connected with the top wall of the shell, a plurality of meshes are uniformly distributed on the side walls and the bottoms of the primary absorption pipe and the secondary absorption pipe, and the diameter of the meshes on the primary absorption pipe is smaller than that of the meshes on the secondary absorption pipe; the bottom of the first-stage absorption tube is higher than that of the second-stage absorption tube.
Preferably, the tertiary absorbent web is zigzag-shaped.
Preferably, a manhole is further arranged at the top of the tank body.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the utility model discloses an air inlet distributor injects chlorine waste gas into the jar body, and chlorine waste gas gets into the bubbler from the air inlet branch pipe, can make chlorine waste gas and absorption liquid fully contact with the help of the multistage absorption structure in the bubbler, and chlorine among the chlorine waste gas dissolves the absorption liquid; the absorption liquid for absorbing chlorine is stirred by a stirring mechanism, and the liquid level in the tank body is kept unchanged by the absorption liquid through an absorption liquid inlet and an absorption liquid overflow outlet. The absorption efficiency of the utility model is up to more than 90 percent, the chlorine gas is recycled, the alkali consumption of the final-stage alkali liquor absorption is reduced, and the cost is saved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of a multistage absorption apparatus for chlorine-containing waste gas according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the bubbler in FIG. 1;
FIG. 3 is a top plan view of the top of the can body of FIG. 1;
In the figure: 1: an absorption liquid inlet; 2: an absorption liquid overflow outlet; 3: a tail gas discharge port; 4: a manhole; 5: air inlet distributor, 5-1: intake manifold, 5-2: air inlet branch pipe, 5-3: an air inlet; 6: stirring mechanism, 6-1: motor, 6-2: stirring shaft, 6-3: stirring blades; 7: a liquid seal; 8: bubbler, 8-1: inlet, 8-2: primary absorption tube, 8-3: secondary absorption tube, 8-4: a tertiary absorption net; 9: a tank body; 10: the mouth is cleaned.
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.
as shown in fig. 1, the multistage absorption device for chlorine-containing waste gas comprises a tank 9 for containing absorption liquid, wherein the upper part of the tank 9 is provided with an absorption liquid inlet 1, the lower part of the tank 9 is provided with an absorption liquid overflow outlet 2, and a stirring mechanism 6 for mixing the absorption liquid is arranged in the tank 9; the top of the tank body 9 is provided with an air inlet distributor 5 and a tail gas discharge port 3, the lower end of an air inlet branch pipe 5-2 of the air inlet distributor 5 is provided with a bubbler 8 immersed in the absorption liquid, and the bubbler 8 is internally provided with a multi-stage absorption structure; the absorption liquid overflow outlet 2 is arranged above the bubbler 8. Chlorine-containing waste gas is injected into the tank body through the gas inlet distributor and the gas inlet branch pipe, the chlorine-containing waste gas can be fully contacted with the absorption liquid through the multi-stage absorption structure in the bubbler, and chlorine in the chlorine-containing waste gas is dissolved into the absorption liquid. The absorption liquid adopts the matching stock solution of cyanuric acid and mineral powder, the stock solution and the chlorine-containing waste gas are uniformly mixed by using a stirring mechanism, the chlorine in the chlorine-containing waste gas is fully absorbed, the chlorine overflows into an external circulating tank through an absorption liquid overflow port, and the chlorine is conveyed to the next procedure for recycling through a conveying pump; the tail gas is discharged into a final stage absorption device through a tail gas discharge port, and then reacts with diluted alkali liquor to reach the discharge standard (ppm is less than 5). By adopting the technical scheme, the absorption efficiency can be improved, the alkali liquor consumption is reduced, and the production cost is reduced.
As a preferable structure, as shown in fig. 1, the stirring mechanism 6 includes a motor 6-1, a stirring shaft 6-2 and a stirring blade 6-3, the motor 6-1 is disposed at the top of the tank 9, an output shaft of the motor 6-1 is connected to the stirring shaft 6-2 through a speed reducer, the stirring blade 6-3 is fixed at the lower end of the stirring shaft 6-2, and the stirring blade 6-3 is immersed in the absorption liquid. The motor drives the stirring shaft to rotate through the speed reducer, and drives the stirring blades to stir the absorption liquid, so that the chlorine-containing waste gas is fully contacted with the absorption liquid, and the chlorine recovery rate is improved. Wherein the distance between the stirring blade and the bottom of the tank body is not more than 15cm, the distance between the stirring blade and the inner wall of the tank body is not more than 15cm, and the rotating speed is not less than 70 r/min; the stock solution is ensured to be mixed evenly.
In order to ensure the sealing performance of the stirring shaft during rotation, as shown in fig. 1, the stirring shaft 6-2 is matched with the top of the tank body 9 through a liquid seal 7. The sealing between the stirring shaft and the tank body can be ensured by the liquid sealing element, and the friction force borne by the stirring shaft can be reduced.
As shown in fig. 1 and 3, the intake distributor 5 includes a polygonal intake manifold 5-1 and a plurality of intake branch pipes 5-2, the intake manifold 5-1 is disposed on the top of the tank 9, the upper ends of the intake branch pipes 5-2 are communicated with the intake manifold 5-1, and the lower ends are communicated with the bubbler 8; and the air inlet 5-3 of the air inlet main pipe 5-1 is arranged on the outer side of the air inlet main pipe 5-1 and is staggered with the tail gas discharge port 3. The sectional area of the tail gas discharge port is not less than 2.5 times of that of the gas inlet, so that the gas speed can be reduced, and the raw liquid is prevented from being brought into the tail gas discharge port, and the cost is prevented from being wasted.
In a specific embodiment of the present invention, as shown in fig. 3, the intake manifold 5-1 is hexagonal, and the intake port 5-3 of the intake manifold 5-1 is disposed at one of the corner portions; the number of the air inlet branch pipes 5-2 is 12, six groups of 12 air inlet branch pipes 5-2 are arranged on six sides of the air inlet main pipe 5-1, and 2 air inlet branch pipes 5-2 of each group are arranged at intervals. The main gas inlet pipe is in a regular hexagon shape, and the 12 gas inlet branch pipes are uniformly distributed, so that the chlorine-containing waste gas can be ensured to be uniformly injected into the absorption liquid.
Further optimizing the technical scheme, as shown in fig. 1, a cleaning opening 10 is arranged at the top of the air inlet main pipe 5-1, and the cleaning opening 10 is provided with a valve. In the use, the phenomenon of bubbler blockage can occur, and the bubbler needs to be cleaned by clean water through the cleaning port 10 at regular time, so that the bubbler can be effectively prevented from being blocked, and the working efficiency of the bubbler can be guaranteed.
As shown in fig. 1 and 2, the bubbler 8 comprises a shell 8-0 and a multi-stage absorption structure, the multi-stage absorption structure comprises a primary absorption pipe 8-2, a secondary absorption pipe 8-3 and a tertiary absorption net 8-4, the primary absorption pipe 8-2 and the secondary absorption pipe 8-3 are both arranged in the shell 8-0, and the tertiary absorption net 8-4 is arranged at the bottom of the shell 8-0; and a plurality of meshes for exhausting are uniformly distributed on the side walls of the first-stage absorption pipe 8-2 and the second-stage absorption pipe 8-3 and the third-stage absorption net 8-4.
As shown in fig. 2, an inlet 8-1 at the upper end of the primary absorption pipe 8-2 is communicated with an air inlet branch pipe 5-2, the upper end of the secondary absorption pipe 8-3 is connected with the top wall of the shell 8-0, a plurality of meshes are uniformly distributed on the side wall and the bottom of the primary absorption pipe 8-2 and the secondary absorption pipe 8-3, and the diameter of the meshes on the primary absorption pipe 8-2 is smaller than that of the meshes on the secondary absorption pipe 8-3; the bottom of the primary absorption pipe 8-2 is higher than the bottom of the secondary absorption pipe 8-3. The diameter of the inlet 8-1 of the bubbler is designed to be phi 100 mm; a plurality of meshes with the diameter of phi 10mm are processed on the side wall of the first-stage absorption tube 8-2 of the bubbler, the meshes are uniformly and densely distributed, and the lower end of the first-stage absorption tube is 10cm higher than the lower end of the second-stage absorption tube 8-3 of the bubbler; the diameter of a secondary absorption pipe 8-3 of the bubbler is designed to be phi 200mm, a plurality of phi 12 meshes are processed on the side wall of the bubbler, the meshes are uniformly and densely distributed, and the lower end of the secondary absorption pipe is 10cm higher than a third-stage absorption net 8-4; the diameter of the three-level absorption net 8-4 of the bubbler is designed to be phi 300mm, and the three-level absorption net is designed to be zigzag, so that chlorine-containing waste gas can uniformly flow out.
In one embodiment, as shown in fig. 1, the top of the tank 9 is further provided with a manhole. The inside condition of the tank body is conveniently and regularly checked by means of a manhole. The manhole needs to be sealed by a sealing plate in use, so that air leakage from the manhole can not be guaranteed, and the absorption effect is influenced.
In a specific embodiment of the utility model, the diameter of the absorption liquid inlet is over phi 40mm, and a circulating pump is equipped to quantitatively replace the stock solution in the tank body; an external circulating groove is also needed to ensure that the stock solution circulating amount in the tank body is more than or equal to 20 m/h; the absorbed stock solution flows into the circulating groove through the absorption solution overflow port to form liquid circulation. Meanwhile, the size of the absorption liquid overflow port is designed to be more than 150 x 150mm, so that the liquid level in the tank body is ensured to be in a normal state, and the redundant stock solution overflows into the external circulating tank; the distance between the lower part of the overflow port and the lower part of the bubbler is 40cm-50cm, and a liquid surface layer in the bubbler is guaranteed.
The working process of the utility model is as follows: continuously adding a proportioned stock solution of cyanuric acid and mineral powder into the tank body 9 from the absorption liquid inlet 1 through a circulating pump, starting the stirring mechanism 6, uniformly mixing the stock solution under the stirring action of the stirring blades, and fully reacting with chlorine-containing waste gas; the stock solution after reaction overflows to an external circulating tank from a stock solution overflow port and is conveyed to the next working procedure by a conveying pump; chlorine-containing waste gas is uniformly distributed into each bubbler through an air inlet distributor by a high-pressure fan (6000 pa), and fully reacts with the stock solution. The tail gas after reaction is discharged into a final stage absorption device from a tail gas discharge port, and then reacts with the diluted alkali liquor to reach the discharge standard (ppm < 5). The single arrows in fig. 1 and 2 indicate the gas flow direction, and the hollow arrows indicate the stock solution flow direction.
In summary, the utility model has the advantages of simple structure, low cost and high chlorine absorption efficiency, improves the recovery rate of chlorine by the three-stage absorption structure of the bubbler, and has the absorption efficiency of more than 90 percent; the recycling rate can save the cost of chlorine gas, the tail gas emission reduces the consumption of the alkali liquor at the final stage, and the production cost is reduced.
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 implemented in other ways different from the one described herein, and those skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. The utility model provides a multistage absorbing device of chlorine-containing waste gas which characterized in that: the absorption tank comprises a tank body for containing absorption liquid, wherein the upper part of the tank body is provided with an absorption liquid inlet, the lower part of the tank body is provided with an absorption liquid overflow outlet, and a stirring mechanism for mixing the absorption liquid is arranged in the tank body; the top of the tank body is provided with an air inlet distributor and a tail gas discharge port, the lower end of an air inlet branch pipe of the air inlet distributor is provided with a bubbler immersed in the absorption liquid, and the bubbler is internally provided with a multi-stage absorption structure; the absorption liquid overflow outlet is arranged above the bubbler.
2. The multistage absorption apparatus for chlorine-containing off-gas according to claim 1, wherein: the stirring mechanism comprises a motor, a stirring shaft and stirring blades, the motor is arranged at the top of the tank body, an output shaft of the motor is coaxially fixed with the stirring shaft, the stirring blades are fixed at the lower end of the stirring shaft, and the stirring blades are immersed in the absorption liquid.
3. The multistage absorption apparatus for chlorine-containing off-gas according to claim 2, wherein: the stirring shaft is matched with the top of the tank body through a liquid sealing element.
4. The multistage absorption apparatus for chlorine-containing off-gas according to claim 1, wherein: the air inlet distributor comprises a polygonal air inlet main pipe and a plurality of air inlet branch pipes, the air inlet main pipe is arranged on the top of the tank body, the upper ends of the air inlet branch pipes are communicated with the air inlet main pipe, and the lower ends of the air inlet branch pipes are communicated with the bubbler; the air inlet of the air inlet main pipe is arranged on the outer side of the air inlet main pipe and is arranged in a staggered mode with the tail gas discharge port.
5. The multistage absorption apparatus for chlorine-containing off-gas according to claim 4, wherein: the air inlet main pipe is hexagonal, and an air inlet of the air inlet main pipe is arranged at one corner part; the number of the air inlet branch pipes is 12, the 12 air inlet branch pipes are arranged on six sides of the air inlet main pipe in six groups, and 2 air inlet branch pipes of each group are arranged at intervals.
6. the multistage absorption apparatus for chlorine-containing off-gas according to claim 4, wherein: the top of air inlet main pipe is provided with a cleaning opening, and the cleaning opening is provided with a valve.
7. The multistage absorption apparatus for chlorine-containing off-gas according to claim 4, wherein: the bubbler comprises a shell and a multi-stage absorption structure, wherein the multi-stage absorption structure comprises a first-stage absorption tube, a second-stage absorption tube and a third-stage absorption net, the first-stage absorption tube and the second-stage absorption tube are arranged in the shell, and the third-stage absorption net is arranged at the bottom of the shell; and a plurality of meshes for exhausting are uniformly distributed on the side walls of the first-stage absorption pipe and the second-stage absorption pipe and the third-stage absorption net.
8. the multistage absorption apparatus for chlorine-containing off-gas according to claim 7, wherein: the upper end of the primary absorption pipe is communicated with the air inlet branch pipe, the upper end of the secondary absorption pipe is connected with the top wall of the shell, a plurality of meshes are uniformly distributed on the side walls and the bottoms of the primary absorption pipe and the secondary absorption pipe, and the diameter of the meshes on the primary absorption pipe is smaller than that of the meshes on the secondary absorption pipe; the bottom of the first-stage absorption tube is higher than that of the second-stage absorption tube.
9. The multistage absorption apparatus for chlorine-containing off-gas according to claim 7, wherein: the three-stage absorption net is in a zigzag shape.
10. The multistage absorption apparatus for chlorine-containing off-gas as recited in any one of claims 1 to 9, wherein: the top of the tank body is also provided with a manhole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920093896.0U CN209752550U (en) | 2019-01-21 | 2019-01-21 | Multistage absorbing device of chlorine-containing waste gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920093896.0U CN209752550U (en) | 2019-01-21 | 2019-01-21 | Multistage absorbing device of chlorine-containing waste gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855868A (en) * | 2020-07-24 | 2020-10-30 | 盐城工学院 | On-site sampling device for peculiar smell gas and operation process thereof |
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2019
- 2019-01-21 CN CN201920093896.0U patent/CN209752550U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855868A (en) * | 2020-07-24 | 2020-10-30 | 盐城工学院 | On-site sampling device for peculiar smell gas and operation process thereof |
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