CN214862443U - Gaseous processing apparatus of VOCs who contains tar sewage - Google Patents
Gaseous processing apparatus of VOCs who contains tar sewage Download PDFInfo
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- CN214862443U CN214862443U CN202120568449.3U CN202120568449U CN214862443U CN 214862443 U CN214862443 U CN 214862443U CN 202120568449 U CN202120568449 U CN 202120568449U CN 214862443 U CN214862443 U CN 214862443U
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Abstract
The utility model provides a treatment device for VOCs gas containing tar sewage, belonging to the technical field of waste gas treatment; comprises a waste gas and tar separator, an acid washing spray tower, an alkali washing spray tower, a water washing spray tower and a photocatalytic device which are connected in sequence; the air inlet of the waste gas and tar separator is connected with a fan, and the bottom of the waste gas and tar separator is connected with a tar collecting pump; the bottoms of the acid washing spray tower, the alkali washing spray tower and the water washing spray tower are respectively connected with a circulating pump; the utility model preferentially filters a large amount of tar contained in the gas, and reduces the treatment efficiency of the tar on the subsequent process, namely the subsequent acid, alkali and water washing; the utility model discloses not only have multiple collection treatment measures, satisfy exhaust-gas treatment up to standard, can also produce economic benefits after the sewage in the gas is collected.
Description
Technical Field
The utility model belongs to the technical field of exhaust-gas treatment, be applied to the VOCs exhaust-gas treatment's in trades such as petrochemical industry and coal chemical industry technical field. Relates to a treatment device for VOCs gas containing tar sewage.
Background
Along with the continuous development of national economy, environmental pollution is increasingly prominent, the content of non-methane total hydrocarbons of carbon dioxide exhaust gas containing VOCs in the low-temperature methanol washing process in the coal chemical industry is higher, a safe and reliable process is urgently needed for treating the VOCs in the low-temperature methanol washing process, because waste gas contains certain tar sewage after being collected, the oil stains can be further utilized if being reasonably recovered, but at present, the VOCs gas treatment device containing the tar sewage, which can ensure that the waste gas reaches the standard in environmental protection and can also utilize the collected products to generate benefits, is not enough, the existing equipment has the problems of complicated structure flow, higher treatment cost and poor treatment effect.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art and provides a VOCs gas treatment device containing tar sewage. Aims to improve the recovery rate of VOCs gas containing tar sewage and reduce the recovery cost.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A treatment device for VOCs gas containing tar sewage comprises a waste gas and tar separator, an acid washing spray tower, an alkali washing spray tower, a water washing spray tower and a photocatalytic device; the air inlet of the waste gas and tar separator is connected with a fan, and the bottom of the waste gas and tar separator is connected with a tar collecting pump; the gas outlet at the top of the waste gas and tar separator is connected with the gas inlet of an acid washing spray tower, the gas outlet at the top of the acid washing spray tower is connected with the gas inlet of an alkali washing spray tower, the gas outlet at the top of the alkali washing spray tower is connected with the gas inlet of a water washing spray tower, the gas outlet at the top of the water washing spray tower is connected with a photocatalytic device, and the gas outlet of the photocatalytic device is connected with an exhaust cylinder; the bottoms of the acid washing spray tower, the alkali washing spray tower and the water washing spray tower are respectively connected with a circulating pump.
Furthermore, a plurality of layers of guide plates are respectively arranged in the acid washing spray tower, the alkali washing spray tower and the water washing spray tower, and the guide plates are connected with the inner wall of the tower.
Furthermore, a tar drainage and collection groove is arranged at the bottom of the waste gas and tar separator, and a tar outlet of the tar drainage and collection groove is connected with a tar collection pump.
Furthermore, the grooves of the tar drainage and collection groove are smoothly and downwards arranged in a spiral mode, and a tar outlet is arranged at the lowest position.
The utility model discloses produced beneficial effect does for prior art.
The utility model preferentially filters a large amount of tar contained in the gas, and reduces the treatment efficiency of the tar on the subsequent process, namely the subsequent acid, alkali and water washing; the recovered tar can be recycled, and the method has great economic benefit. The acidic and alkaline substances and ammonia gas in the waste gas are effectively removed by washing with acid and alkaline water layer by layer, and finally, the gas is coated with a catalyst for accelerating the reaction rate of free radicals and organic pollutants through a photocatalytic device, so that the pollutants are completely degraded into inorganic substances by accelerating the processes of addition, substitution, electron transfer and the like between the free radicals and the organic pollutants. The utility model discloses not only have multiple collection treatment measures, satisfy exhaust-gas treatment up to standard, can also produce economic benefits after the sewage in the gas is collected.
Drawings
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the following drawings are combined for illustration:
FIG. 1 is a schematic structural diagram of a device for treating VOCs gas containing tar sewage according to the present invention.
In the figure, 1 is a waste gas and tar separator, 2 is an acid washing spray tower, 3 is an alkali washing spray tower, 4 is a water washing spray tower, 5 is a photocatalytic device, 6 is a fan, 7 is a tar collecting pump, 8 is an exhaust cylinder, 9 is a circulating pump, and 10 is a tar drainage collecting ditch.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, the present embodiment is a treatment device for VOCs gas containing tar sewage, mainly comprising a waste gas-tar separator 1, an acid washing spray tower 2, an alkali washing spray tower 3, a water washing spray tower 4 and a photocatalytic device 5; the air inlet of the waste gas and tar separator 1 is connected with a fan 6, the bottom of the waste gas and tar separator 1 is provided with a tar drainage collecting channel 10, and the tar outlet of the tar drainage collecting channel 10 is connected with a tar collecting pump 7. The grooves of the tar drainage and collection channel 10 are arranged downwards smoothly in a spiral mode, and a tar outlet is arranged at the lowest position.
A gas outlet at the top of the waste gas-tar separator 1 is connected with a gas inlet of an acid washing spray tower 2, a gas outlet at the top of the acid washing spray tower 2 is connected with a gas inlet of an alkali washing spray tower 3, a gas outlet at the top of the alkali washing spray tower 3 is connected with a gas inlet of a water washing spray tower 4, a gas outlet at the top of the water washing spray tower 4 is connected with a photocatalytic device 5, and a gas outlet of the photocatalytic device 5 is connected with an exhaust cylinder 8; the bottoms of the acid washing spray tower 2, the alkali washing spray tower 3 and the water washing spray tower 4 are respectively connected with a circulating pump 9. And a plurality of layers of guide plates are respectively arranged in the pickling spray tower 2, the alkaline washing spray tower 3 and the washing spray tower 4, and the guide plates are connected with the inner wall of the tower.
The working process of the equipment is as follows: after VOCs waste gas containing tar sewage is extracted, absorbed and enters the system through the fan 6 and then enters the waste gas and tar separator 1, the filtering part is arranged inside the filtering main body of the waste gas and tar separator 1, and separated tar is collected and then recycled, so that economic value is generated. After passing through the tar separator, the waste gas passes through the acid washing spray tower 2, and alkaline substances in the gas are washed by acid liquid through the acid washing spray device in the acid washing spray tower 2 by utilizing an acid-base neutralization principle, and then the waste gas enters the alkaline washing spray tower 3, and the acidic substances in the gas, such as hydrogen sulfide and the like, are washed by caustic soda solution. Finally, the residual ammonia gas and other substances which can be dissolved in water in the gas are washed by a water washing spray tower 4, and the separated ammonia liquid can be recycled. After being washed by 3 washing towers, the organic pollutants enter a photocatalytic device 5 to generate free radicals with extremely strong activity in a reaction system by utilizing ultraviolet rays and a photocatalyst, and then the pollutants are completely degraded into inorganic matters through the processes of addition, substitution, electron transfer and the like between the free radicals and the organic pollutants. Finally, the qualified gas after treatment is discharged through the exhaust cylinder 8. Waste gas tar separator 1 bottom is equipped with tar drainage and collects ditch 10, tar drainage is collected ditch 10 and is being close to the inner wall setting of filtration equipment main part, the following spiral mode of ditch of tar drainage collection ditch 10 is level and smooth arranging downwards, sets up the tar export at the lower extreme, and waste gas is handed over by the bottom intercommunication collecting tank of separation filtration equipment main part, and in the collecting tank was down along filter core wall flow to the dropping liquid such as tar and water under filtering, recycled after collecting the tar of separating by the collecting tank again, produced economic value.
When VOCs gas passes through the waste gas and tar separator 1, gas containing tar and condensed water transversely passes through the filter material and repeatedly collides with the filter element wall to form Brownian motion, the gas easily penetrates through the filter material due to light weight, and the tar and trace water in the gas gradually form larger liquid drops under the action of gravity, so that the larger liquid drops gradually flow down along the filter element wall. The filtering mode of the waste gas and tar separator 1 adopts surrounding type filtering, which not only saves space, but also has high filtering effect. Because the content of benzene and other substances in the tar is too high, the tar has special peculiar smell, the tar reaches the standard when being discharged finally, the tar in the gas is not beneficial to the treatment of the waste gas by the subsequent process, and the treatment efficiency of the subsequent acid, alkali and water washing can be influenced, so that a large amount of tar in the gas is preferentially filtered. The recovered tar can be recycled, and the method has great economic benefit.
The structure of the acid washing spray tower 2, the alkali washing spray tower 3 and the water washing spray tower 4 is that guide plates are uniformly distributed on the inner wall of the tower by tower plate blades, the function is that waste gas rotates and rises, so that liquid flowing downwards plate by plate on the tower plates is sprayed into fog drops, liquid drops with large contact area between gas and liquid are driven by airflow to rotate, the contact between the gas and the liquid is strengthened by the generated centrifugal force, finally the liquid drops are thrown to the wall of the tower and flow downwards to the next layer of tower plates along the wall, the liquid drops are atomized by the airflow again to be in gas-liquid contact, and the gas is discharged from the top. The discharged air is circularly washed by the acid washing spray tower 2 to wash alkaline substances such as ammonia gas and the like, so that the ammonia content in the subsequent gas can reach the standard, and the odor of ammonia in the treated gas can meet the environmental protection requirement. The acid washing spray tower 2 washes ammonia gas, and the formed ammonia water can be recycled, so that the effect of saving cost is achieved. Circulation washing H of vent gas through alkaline washing spray tower 32S and other acidic substances to ensure H in VOCs gas2The treatment rate of acidic substances such as S. The discharged air is washed by the water washing spray tower 4 to remove pollutants such as ammonia and the like dissolved in water, and can be recycled, so that the ammonia content is effectively reduced again to ensure that the subsequent gas reaches the standard.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (4)
1. A treatment device for VOCs gas containing tar sewage is characterized by comprising a waste gas and tar separator (1), an acid washing spray tower (2), an alkali washing spray tower (3), a water washing spray tower (4) and a photocatalytic device (5); the air inlet of the waste gas and tar separator (1) is connected with a fan (6), and the bottom of the waste gas and tar separator (1) is connected with a tar collecting pump (7); a gas outlet at the top of the waste gas-tar separator (1) is connected with a gas inlet of an acid washing spray tower (2), a gas outlet at the top of the acid washing spray tower (2) is connected with a gas inlet of an alkali washing spray tower (3), a gas outlet at the top of the alkali washing spray tower (3) is connected with a gas inlet of a water washing spray tower (4), a gas outlet at the top of the water washing spray tower (4) is connected with a photocatalytic device (5), and a gas outlet of the photocatalytic device (5) is connected with an exhaust cylinder (8); the bottoms of the acid washing spray tower (2), the alkali washing spray tower (3) and the water washing spray tower (4) are respectively connected with a circulating pump (9).
2. The device for treating VOCs gas containing tar sewage according to claim 1, wherein a plurality of layers of guide plates are respectively arranged in the pickling spray tower (2), the alkaline washing spray tower (3) and the water washing spray tower (4), and the guide plates are connected with the inner wall of the tower.
3. The device for treating VOCs gas containing tar sewage according to claim 1, wherein a tar drainage collection channel (10) is arranged at the bottom of the waste gas-tar separator (1), and a tar outlet of the tar drainage collection channel (10) is connected with a tar collection pump (7).
4. The apparatus for treating VOCs gases containing tar contaminated water as claimed in claim 3, wherein the troughs of said tar drainage collection channel (10) are arranged smoothly downward in a spiral manner, with a tar outlet at the lowest point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120568449.3U CN214862443U (en) | 2021-03-19 | 2021-03-19 | Gaseous processing apparatus of VOCs who contains tar sewage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120568449.3U CN214862443U (en) | 2021-03-19 | 2021-03-19 | Gaseous processing apparatus of VOCs who contains tar sewage |
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| CN214862443U true CN214862443U (en) | 2021-11-26 |
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| CN202120568449.3U Active CN214862443U (en) | 2021-03-19 | 2021-03-19 | Gaseous processing apparatus of VOCs who contains tar sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117732195A (en) * | 2024-02-20 | 2024-03-22 | 太原理工大学 | Tar and nitrogenous substance collection device of coal pyrolysis |
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2021
- 2021-03-19 CN CN202120568449.3U patent/CN214862443U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117732195A (en) * | 2024-02-20 | 2024-03-22 | 太原理工大学 | Tar and nitrogenous substance collection device of coal pyrolysis |
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