CN218774582U - Sulfur-containing tail gas treatment device - Google Patents
Sulfur-containing tail gas treatment device Download PDFInfo
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- CN218774582U CN218774582U CN202222767680.2U CN202222767680U CN218774582U CN 218774582 U CN218774582 U CN 218774582U CN 202222767680 U CN202222767680 U CN 202222767680U CN 218774582 U CN218774582 U CN 218774582U
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Abstract
The utility model discloses a sulfur-containing tail gas treatment device, wherein a sulfur melting chamber is connected with an induced draft fan, the induced draft fan is connected with an alkaline washing tower, and the bottom of the alkaline washing tower is connected with a left groove of a sedimentation tank; the alkali dissolving tank is connected with a delivery pump, and the delivery pump is connected with a left tank of the sedimentation tank. The right groove of sedimentation tank is connected with the circulation washing pump, and the circulation washing pump is connected to the environmental protection station all the way, is connected to alkaline tower upper portion all the way. The top of the caustic tower is connected to a chimney through an induced draft fan. The left groove and the right groove of the sedimentation tank are separated by an overflow plate. After the tail gas is subjected to a water washing process, a precipitation process, a flue gas treatment process and an environment-friendly process, the tail gas in a sulfur melting process is reasonably treated, and a liquid phase and a solid phase obtained by treating the tail gas are treated. Adopt the utility model discloses the device can rationally handle the sulphur material that contains in the tail gas, with sulphur resource recovery, effectively reduce pollutions such as low-dust, accomplish emission up to standard, and accomplish effective desorption to the peculiar smell that contains in the sulphur tail gas.
Description
Technical Field
The utility model belongs to the tail gas treatment field, concretely relates to sulfur-containing tail gas processing apparatus.
Background
At present, the treatment method for sulfur-containing tail gas in China comprises the following steps: absorption method: physical solvent absorption method, chemical solvent absorption method; decomposition method: thermal decomposition method, microwave technology decomposition; adsorption processes (regenerable adsorbent processes, non-regenerable adsorbent adsorption processes); the absorption method can be further divided into: physical absorption and chemical absorption. The purification method of the waste gas treatment equipment adopted for the sulfur-containing tail gas is a recovery method. For sulfur-containing tail gas with large amount and high concentration, sulfur is added through oxidation, sulfur can be purified through absorption at medium concentration, and sulfur-containing tail gas with small amount and low concentration is treated through adsorption.
Disclosure of Invention
To the technical problem, the utility model provides a sulfur-containing tail gas processing apparatus between sulfur melting. The device is used for treating sulfur-containing substances in the tail gas, the content of sulfur dust in the tail gas can be effectively reduced, and the alkali liquor is used for absorbing the sulfur-containing substances in the tail gas, so that the effect of purifying the tail gas is achieved, and the tail gas is discharged up to the standard; meanwhile, the peculiar smell in the sulfur-containing tail gas can be removed, the air environment is purified, and the environment is protected.
The sulfur-containing tail gas treatment device is characterized in that a sulfur melting room is connected with an induced draft fan, the induced draft fan is connected with an alkaline washing tower, and the bottom of the alkaline washing tower is connected with a left groove of a sedimentation tank;
the alkali dissolving tank is connected with a delivery pump, and the delivery pump is connected with a left tank of the sedimentation tank.
The right groove of sedimentation tank is connected with the circulation washing pump, and the circulation washing pump is connected to the environmental protection station all the way, is connected to alkaline tower upper portion all the way.
The top of the caustic tower is connected to a chimney through an induced draft fan.
The left groove and the right groove of the sedimentation tank are separated by an overflow plate.
By adopting the device of the utility model, tail gas including sulfur dust, sublimed sulfur, hydrogen sulfide and the like is put in a sulfur melting chamber, the temperature is 70-75 ℃, and the pressure is about 0 kPa. Conveying sulfur-containing tail gas in a sulfur melting chamber to an alkaline washing tower by an induced draft fan, and adopting a bottom feeding mode; conveying 13.5-16.5% sodium hydroxide solution (liquid caustic soda) into a left tank of a sedimentation tank by an alkali dissolving tank, keeping the liquid level of the left tank of the sedimentation tank at 1500-1700mm, overflowing the liquid caustic soda into a right tank from the left tank, pumping the liquid caustic soda into the upper part of a water washing tower by a circulating water washing pump, and neutralizing and washing the liquid caustic soda and the liquid caustic soda in the caustic washing tower at the temperature of 25-30 ℃; the purified tail gas is sent to a factory chimney by an induced draft fan for emptying treatment, and the liquid caustic absorption liquid is sent to a left tank of a sedimentation tank for cyclic utilization after flowing out from the bottom of the tower; after the PH of the supernatant of the sedimentation tank reaches the standard, pumping the solution in the right tank of the sedimentation tank by a circulating water washing pump to send the solution to an environmental protection station.
The pH value of the supernatant of the sedimentation tank can be controlled to be neutral. The consumption of caustic soda is at least 6000 kg/year.
Drawings
Fig. 1 is the structure schematic diagram of the sulfur-containing tail gas treatment device of the utility model.
Fig. 2 is a structural view of the sedimentation tank 7.
1: melting sulfur; 2: an alkali dissolving tank; 3: an induced draft fan; 4: an alkaline washing tower; 5: a liquid caustic soda feedstock pump; 6: an induced draft fan: 7: a sedimentation tank; 7-1 left groove; 7-2 right groove; 8: a circulating water washing pump; 9 overflow plate.
Detailed Description
The invention is further described with reference to the following figures and examples, but the scope of the invention as claimed is not limited to the examples.
In the sulfur-containing tail gas treatment device, a sulfur melting room 1 is connected with an induced draft fan 3, the induced draft fan 3 is connected with an alkaline washing tower 4, and the bottom of the alkaline washing tower 4 is connected with a left groove 7-1 of a sedimentation tank 7;
the alkali dissolving tank 2 is connected with a delivery pump 5, and the delivery pump 5 is connected with a left tank 7-1 of a sedimentation tank 7. The left groove 7-1 and the right groove 7-2 of the sedimentation tank 7 are separated by an overflow plate 9.
And a right groove 7-2 of the sedimentation tank 7 is connected with a circulating water washing pump 8, one path of the circulating water washing pump 8 is connected to the environment-friendly station, and the other path of the circulating water washing pump is connected to the upper part of the alkaline tower 4.
The top of the alkaline tower 4 is connected to a chimney through an induced draft fan 6.
The tail gas in the sulfur melting chamber comprises sulfur dust, sublimed sulfur, hydrogen sulfide and the like, the temperature is 70-75 ℃, the pressure is about 0kPa, and the flow is 42g/h.
Conveying the sulfur-containing tail gas in the sulfur melting room 1 to an alkaline washing tower 4 by using an induced draft fan 3, keeping the pressure at the top of the tower at 0.03kPa, and adopting a bottom feeding mode; the method comprises the following steps of (1) converting a 48% sodium hydroxide solution (liquid caustic soda) into a 13.5-16.5% sodium hydroxide solution by an alkali dissolving tank 2, conveying the sodium hydroxide solution into a left tank 7-1 of a sedimentation tank 7, keeping the liquid level of the left tank of the sedimentation tank 2 at 1500-1700mm, overflowing the liquid caustic soda from the left tank to a right tank, pumping the liquid caustic soda into the upper part of an alkaline tower by a circulating water washing pump 8, neutralizing and washing the two in the alkaline tower 4 at the temperature of 25-30 ℃, and generating sodium sulfide after washing; the pressure of the purified tail gas is 0.15-0.20kPa, the tail gas is sent to a factory area chimney by an induced draft fan 6 for emptying, and the content of sulfur dioxide discharged into the atmosphere is less than 88 mg/Nm specified by national environmental protection 3 Index requirements; and after the liquid caustic soda absorption liquid flows out from the bottom of the tower, the liquid caustic soda absorption liquid enters a left groove 7-1 of the sedimentation tank 7 for cyclic utilization, and after the pH value of the supernatant liquid of the sedimentation tank 7 is detected to be neutral, the solution in a right groove 7-2 of the sedimentation tank 7 is pumped by a circulating water washing pump 8 and is sent to an environment-friendly station.
Claims (4)
1. The sulfur-containing tail gas treatment device is characterized in that a sulfur melting room (1) is connected with a first induced draft fan (3), the first induced draft fan (3) is connected with an alkaline washing tower (4), and the bottom of the alkaline washing tower (4) is connected with a left groove (7-1) of a sedimentation tank (7);
the alkali dissolving tank (2) is connected with a delivery pump (5), and the delivery pump (5) is connected with a left tank (7-1) of the sedimentation tank (7).
2. The sulfur-containing tail gas treatment device according to claim 1, wherein a right tank (7-2) of the sedimentation tank (7) is connected with a circulating water washing pump (8), one path of the circulating water washing pump (8) is connected to the environmental protection station, and the other path of the circulating water washing pump is connected to the upper part of the alkaline washing tower (4).
3. The sulfur-containing tail gas treatment device according to claim 2, wherein the top of the caustic tower (4) is connected to a chimney through a second induced draft fan (6).
4. The sulfur-containing tail gas treatment device according to claim 1, wherein the left tank (7-1) and the right tank (7-2) of the sedimentation tank (7) are separated by an overflow plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222767680.2U CN218774582U (en) | 2022-10-20 | 2022-10-20 | Sulfur-containing tail gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222767680.2U CN218774582U (en) | 2022-10-20 | 2022-10-20 | Sulfur-containing tail gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218774582U true CN218774582U (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222767680.2U Active CN218774582U (en) | 2022-10-20 | 2022-10-20 | Sulfur-containing tail gas treatment device |
Country Status (1)
| Country | Link |
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| CN (1) | CN218774582U (en) |
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2022
- 2022-10-20 CN CN202222767680.2U patent/CN218774582U/en active Active
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