CN218166482U - Sulphuric acid device tail gas processing apparatus - Google Patents
Sulphuric acid device tail gas processing apparatus Download PDFInfo
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- CN218166482U CN218166482U CN202220735574.3U CN202220735574U CN218166482U CN 218166482 U CN218166482 U CN 218166482U CN 202220735574 U CN202220735574 U CN 202220735574U CN 218166482 U CN218166482 U CN 218166482U
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- tail gas
- electric demister
- sprayer
- sulfuric acid
- humidifying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model relates to a sulphuric acid plant tail gas processing apparatus belongs to the environmental protection field. The method comprises pumping water from water tank to a spray thrower by a humidifying pump, humidifying tail gas of a sulfuric acid device, directly feeding humidified flue gas into an electric demister, and removing acid mist by the electric demister to reduce the acid mist content to 5mg/Nm 3 And then the tail gas enters a chimney to be discharged. Device need not to set up the desulfurizing tower, the flow is simple reliable, friendly to environment, economic natureThe method has the advantages of saving occupied area, greatly reducing investment cost and operation cost and bringing economic benefits to enterprises.
Description
Technical Field
The utility model belongs to the technical field of chemical engineering and environmental protection, in particular to a device and a method for treating tail gas of a sulfuric acid device.
Background
The conventional sulfuric acid tail gas treatment device generally comprises a desulfurization tower, an absorption liquid circulating tank, a mother liquor circulating pump, an electric demister, a chimney and the like. SO in tail gas of sulfuric acid plant after tail gas desulfurization treatment 2 The content can be reduced to 100mg/Nm 3 Within, the acid mist content can be reduced to 5mg/Nm 3 Within. However, in some countries and regions, the allowable emission index in the exhaust gas is SO 2 ≤400mg/Nm 3 Or 200mg/Nm 3 Acid mist is less than or equal to 5mg/Nm 3 In this case, it is not necessary to provide a tail gas desulfurization tower from the viewpoint of economy, and therefore, it is necessary to further modify and optimize the tail gas treatment apparatus of the sulfuric acid plant.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device and a method for treating tail gas of a sulfuric acid device.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a sulphuric acid device tail gas processing apparatus, the device includes basin, spray thrower, electric demister, sulphuric acid device tail gas output pipeline links to each other with the bottom of spray thrower, and the top of spray thrower loops through electric demister and chimney and links to each other.
The utility model discloses among the technical scheme: the water tank is connected with the upper part of the sprayer.
The utility model discloses among the technical scheme: the water tank is connected with the upper part of the sprayer through a humidifying pump.
In some specific technical schemes, the sulfuric acid device tail gas treatment device comprises a humidifying device (a water tank, a humidifying pump and a sprayer), an electric demister and a chimney.
The bottom of the water tank of the humidifying device is provided with an outlet which is connected with an inlet of a water pump, the outlet of the water pump is connected with a sprayer, and the humidified tail gas enters an electric demister, is subjected to acid mist removal by the electric demister and is discharged through a chimney.
Preferably, the sulfuric acid main device ensures the SO at the outlet of the final absorption tower by improving the conversion rate 2 ≤400mg/Nm 3 Or 200mg/Nm 3 (according to the standard requirements of different regions).
The humidifying device is used for humidifying tail gas at the outlet of the final absorption tower of the sulfuric acid device, and ensures that the tail gas entering the electric demister is humidified tail gas and the humidity reaches more than 90 percent.
The sprayer adopts the optimized spraying arrangement, and can be arranged in one layer or multiple layers, so that water pumped by the water pump is fully mixed with tail gas, and the high-efficiency humidification is realized.
Among the above-mentioned technical scheme, the flue gas only needs to pass through simple humidification device before getting into the electric demister, need not to pass through the desulfurizing tower.
The utility model has the advantages that:
the device cancelled the desulfurizing tower that conventional method need set up, the flow is simple reliable, to environment friendly, economic nature is high, practices thrift area, greatly reduced investment cost and running cost bring economic benefits for the enterprise.
Drawings
FIG. 1 is a schematic view of a tail gas treatment device of a sulfuric acid plant according to embodiment 1.
Wherein: 1-water tank, 2-humidifying pump, 3-sprayer, 4-electric demister and 5-chimney.
Detailed Description
The present invention will be further explained with reference to the following embodiments, but the scope of the present invention is not limited thereto: example 1:
referring to fig. 1, the device for treating the tail gas of the sulfuric acid device comprises a water tank 1, a sprayer 3 and an electric demister 4, wherein a tail gas output pipeline of the sulfuric acid device is connected with the bottom end of the sprayer 3, and the top of the sprayer 3 is connected with a chimney 5 sequentially through the electric demister 4. The water tank 1 is connected to the upper portion of the shower 3. The water tank 1 is connected to the upper part of the shower 3 through a humidifying pump 2.
The specific process is as follows:
sulfuric acid device of certain country is turned for two turns through' 3+1After two times of suction, the final flue gas discharge amount of the absorption tower is 180000Nm 3 H, wherein SO 2 The content is 390mg/Nm 3 The acid mist content is 40mg/Nm 3 The tail gas firstly enters a humidifying device for humidifying through a flue gas pipeline, and the humidity of the humidified tail gas reaches 100%. The tail gas is then directly sent to an electric demister to remove acid mist. Finally, SO in tail gas of the electric demister 2 The content is 390mg/Nm 3 The acid mist content is reduced to 4mg/Nm 3 And the emission is carried out through a chimney, so that the national environmental protection emission standard is met.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the invention. Modifications and equivalents of the above-described embodiments may occur to persons skilled in the art without departing from the spirit and scope of the invention and are intended to be covered by the following claims.
Claims (3)
1. The utility model provides a sulphuric acid device tail gas processing apparatus which characterized in that: the device comprises a water tank (1), a sprayer (3) and an electric demister (4), wherein a tail gas output pipeline of the sulfuric acid device is connected with the bottom end of the sprayer (3), and the top of the sprayer (3) is connected with a chimney (5) through the electric demister (4) in sequence.
2. The sulfuric acid plant tail gas treatment device according to claim 1, characterized in that: the water tank (1) is connected with the upper part of the sprayer (3).
3. The sulfuric acid plant tail gas treatment device according to claim 1, characterized in that: the water tank (1) is connected with the upper part of the sprayer (3) through the humidifying pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220735574.3U CN218166482U (en) | 2022-03-31 | 2022-03-31 | Sulphuric acid device tail gas processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220735574.3U CN218166482U (en) | 2022-03-31 | 2022-03-31 | Sulphuric acid device tail gas processing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218166482U true CN218166482U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220735574.3U Active CN218166482U (en) | 2022-03-31 | 2022-03-31 | Sulphuric acid device tail gas processing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218166482U (en) |
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2022
- 2022-03-31 CN CN202220735574.3U patent/CN218166482U/en active Active
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