A gas-liquid separation and purification device for petrochemical industry

Abstract

The utility model relates to the technical field of desulfurization equipment, and discloses a gas-liquid separation and purification device for petrochemical industry, comprising a bottom plate, a treatment tower is arranged on the upper end surface of the bottom plate, and four supporting legs in a circumferential array are fixedly installed at the bottom of the treatment tower. The gas-liquid separation and purification device for petrochemical industry, by opening a second water pump so that a second connecting pipe sends desulfurization liquid into a collecting box, after sulfur in the desulfurization liquid in a slurry pool is precipitated, the first water pump is started so that the first connecting pipe sends water in the liquid storage tank into the treatment tower, and then the second water pump will send the desulfurization liquid in the anti-corrosion plate into the liquid storage tank through the second connecting pipe, so as to save water and ensure that the slurry density in the inner cavity of the slurry pool will not decrease sharply, thereby ensuring the desulfurization effect. Since the flushing desulfurization liquid contains part of hydrogen peroxide and dissolved ozone, the anti-corrosion plate collects water and passes it through the liquid storage tank and the first water pump and the second water pump to improve the utilization rate of the oxidant, thereby enhancing the denitration effect.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization equipment, in particular to a gas-liquid separation and purification device for petrochemical industry. Background Art

[0002] The industrial waste gas produced by petrochemical industry is one of the industrial waste gas pollutions. The waste gas from petrochemical industry can be divided into oil refining waste gas, petrochemical waste gas, synthetic fiber waste gas and petrochemical fertilizer waste gas according to the production industry. The waste gas emitted by the four major production industries can be divided into: combustion flue gas, production process waste gas, flare waste gas and unorganized emission waste gas according to the emission method, which causes certain pollution to the environment.

[0003] Traditional petrochemical gas-liquid separation and purification devices generally use demisters for demisting. The demisted water flows back to the bottom of the tower. Due to insufficient gas-liquid contact, the desulfurization effect is poor. In addition, in the traditional way, a large amount of water flushing the demister falls into the bottom slurry pool, which affects the slurry density and reduces the desulfurization effect of the flue gas. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a gas-liquid separation and purification device for petrochemical industry to solve the problem mentioned in the above background technology that the traditional petrochemical gas-liquid separation and purification device generally uses a demister for defogger, and the water after defogger flows back to the bottom of the tower. Due to insufficient gas-liquid contact, the desulfurization effect is not good, and in the traditional way, a large amount of water flushed by the demister falls into the bottom slurry pool, which affects the slurry density, thereby reducing the desulfurization effect of the flue gas.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas-liquid separation and purification device for petrochemical industry, comprising a base plate, a processing tower is arranged on the upper end surface of the base plate, four supporting legs in a circular array are fixedly installed at the bottom of the processing tower, an air inlet is opened on the front end surface of the processing tower, a slurry pool is arranged at the bottom position of the processing tower, a liquid storage tank is arranged at the upper end surface of the base plate near the rear end, a box cover is arranged at the top of the liquid storage tank, cover handles are fixedly installed on both side end surfaces of the box cover, and a limit plate is arranged at a position closer to the middle of the inner wall of the processing tower.

[0006] By adopting the above technical scheme, the treatment tower is supported by the supporting legs installed at the bottom of the treatment tower, and then the two cover handles installed on the top of the liquid storage tank can better open the box cover, and then the limiting plate set in the treatment tower can better limit the anti-corrosion plate, and it also makes it easier for the staff to replace and maintain the anti-corrosion plate later.

[0007] Preferably, an anti-corrosion plate is provided on the limiting plate provided in the treatment tower, the anti-corrosion plate is conical in shape, and a plurality of through holes in a circular array are provided on the top of the anti-corrosion plate.

[0008] By adopting the above technical solution, the purified flue gas can be discharged better through the through holes formed in a circumferential array through the through holes opened at the top of the anti-corrosion plate.

[0009] Preferably, a top cover is provided at the top of the treatment tower, a water inlet is provided at the middle position of the top of the top cover, and an exhaust port is provided at the upper end of the top cover.

[0010] By adopting the above technical solution, the anti-corrosion plate can be washed through the water inlet at the top of the top cover, and then the purified smoke can be discharged better through the exhaust port at the top of the top cover.

[0011] Preferably, a first water pump is provided at the middle position of the top end of the box cover, a first connecting pipe is provided in the first water pump, a water pumping end of the first connecting pipe extends into the liquid storage tank, a water delivery end of the first connecting pipe extends into the treatment tower, a second connecting pipe is provided at a position closer to the middle in the treatment tower, the second connecting pipe is provided in the second water pump, and the water delivery end of the second connecting pipe extends into the liquid storage tank.

[0012] By adopting the above technical solution, the liquid in the liquid storage tank is sent into the treatment tower through the first water pump, and then when the liquid in the liquid storage tank is sent into the treatment tower, the anti-corrosion plate will be flushed, and then the excess liquid will remain between the anti-corrosion plates, and then the second water pump will be turned on, and then the second water pump will send the desulfurization liquid into the collection box through the second connecting pipe, so that the desulfurization liquid can be recycled, thereby saving the utilization rate of the desulfurization liquid.

[0013] Preferably, a first liquid discharge port is provided on one end surface of the liquid storage tank, and a second liquid discharge port is provided at a middle position of the bottom of the treatment tower.

[0014] By adopting the above technical solution, the liquid in the liquid storage tank can be discharged through the first liquid discharge port arranged on one side of the liquid storage tank, and then the liquid carrying sulfur in the slurry pool can be better discharged through the second liquid discharge port.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The gas-liquid separation and purification device for petrochemical industry, by opening the second water pump so that the second connecting pipe sends the desulfurized liquid into the collecting box, after the sulfur in the desulfurized liquid in the slurry pool is precipitated, the first water pump is started so that the first connecting pipe sends the water in the liquid storage tank into the treatment tower, and then the second water pump will send the desulfurized liquid in the anti-corrosion plate into the liquid storage tank through the second connecting pipe, so as to save water and ensure that the slurry density in the inner cavity of the slurry pool will not decrease sharply, thereby ensuring the desulfurization effect. Since the flushing desulfurized liquid contains some hydrogen peroxide and dissolved ozone, the anti-corrosion plate collects water and passes it through the liquid storage tank and the first water pump and the second water pump to improve the utilization rate of the oxidant, thereby enhancing the denitrification effect.

[0017] 2. The gas-liquid separation and purification device for petrochemical industry uses the first water pump to send the liquid in the liquid storage tank into the treatment tower. Then, when the liquid in the liquid storage tank is sent into the treatment tower, the anti-corrosion plate will be flushed, and then the excess liquid will remain between the anti-corrosion plates. Then, by turning on the second water pump, the second water pump will send the desulfurization liquid into the collection box through the second connecting pipe, so that the desulfurization liquid can be recycled, thereby saving the utilization rate of the desulfurization liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model gas-liquid separation and purification device for petrochemical industry;

[0019] Figure 2 This is a schematic diagram of the front view structure of the utility model gas-liquid separation and purification device for petrochemical industry;

[0020] Figure 3 This is a schematic diagram of the internal structure of the gas-liquid separation and purification device for petrochemical industry of the utility model;

[0021] Figure 4 This is a schematic diagram of the utility model anti-corrosion plate and its related structures.

[0022] In the figure: 1. bottom plate; 2. treatment tower; 3. supporting legs; 4. air inlet; 5. slurry pool; 6. liquid storage tank; 7. tank cover; 8. cover handle; 9. limit plate; 10. anti-corrosion plate; 11. through hole; 12. top cover; 13. water inlet; 14. exhaust port; 15. first water pump; 16. first connecting pipe; 17. second connecting pipe; 18. second water pump; 19. first drain port; 20. second drain port. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] Please refer to Figure 1-4 A gas-liquid separation and purification device for petrochemical industry, wherein a processing tower 2 is arranged on the upper end surface of the bottom plate 1, and four supporting legs 3 in a circumferential array are fixedly installed at the bottom of the processing tower 2, an air inlet 4 is opened on the front end surface of the processing tower 2, and a slurry pool 5 is arranged at the bottom position of the processing tower 2, and a liquid storage tank 6 is arranged near the rear end of the upper end surface of the bottom plate 1, and a box cover 7 is arranged on the top of the liquid storage tank 6, and cover handles 8 are fixedly installed on both side end surfaces of the box cover 7, and the inner wall of the processing tower 2 is closer to the middle A limit plate 9 is provided at the position, an anti-corrosion plate 10 is provided on the limit plate 9 provided in the treatment tower 2, the anti-corrosion plate 10 is conical in shape, a plurality of through holes 11 in a circular array are provided at the top of the anti-corrosion plate 10, a top cover 12 is provided at the top of the treatment tower 2, a water inlet 13 is provided at the middle position of the top of the top cover 12, an exhaust port 14 is provided at the upper end of the top cover 12, a first liquid discharge port 19 is provided on one side end surface of the liquid storage tank 6, and a second liquid discharge port 20 is provided at the middle position of the bottom of the treatment tower 2.

[0026] Working principle: When it is necessary to purify the gas produced by petrochemical industry, the flue gas is first sent into the treatment tower 2 through the air inlet 4 set at the front end of the treatment tower 2, and then the liquid in the liquid storage tank 6 is sent into the treatment tower 2 through the first water pump 15, and then the liquid sent into the treatment tower 2 by the first connecting pipe 16 will remove the sulfur in the flue gas, and then the liquid carrying sulfur due to gravity will enter the slurry pool 5 set in the treatment tower 2, and then the desulfurized flue gas will pass through the anti-corrosion plate 10 and be discharged from the exhaust port 14 on the top cover 12, and then the desulfurization liquid is injected into the treatment tower 2 through the liquid inlet set on the top cover 12, and then when the desulfurization liquid enters between the anti-corrosion plates 10, the desulfurization liquid will be stored because the anti-corrosion plates 10 are conical. It stays in the groove between the anti-corrosion plates 10, and then the second water pump 18 is turned on so that the second connecting pipe 17 sends the desulfurization liquid into the collecting box. After the sulfur in the desulfurization liquid in the slurry pool 5 is precipitated, the first water pump 15 is started so that the first connecting pipe 16 sends the water in the liquid storage tank 6 into the treatment tower 2, and then the second water pump 18 will send the desulfurization liquid in the anti-corrosion plate 10 into the liquid storage tank 6 through the second connecting pipe 17, so as to save water and ensure that the slurry density in the inner cavity of the slurry pool 5 will not drop sharply, thereby ensuring the desulfurization effect. Since the flushing desulfurization liquid contains some hydrogen peroxide and dissolved ozone, the anti-corrosion plate 10 collects the water and passes it through the liquid storage tank 6 and the first water pump 15 and the second water pump 18 to increase the utilization rate of the oxidant and enhance the denitrification effect.

[0027] Embodiment 2:

[0028] Please refer to Figure 1-4 A gas-liquid separation and purification device for petrochemical industry, a first water pump 15 is arranged at the middle position of the top of the box cover 7, a first connecting pipe 16 is arranged in the first water pump 15, the water pumping end of the first connecting pipe 16 extends into the liquid storage tank 6, the water delivery end of the first connecting pipe 16 extends into the treatment tower 2, a second connecting pipe 17 is arranged near the middle of the treatment tower 2, the second connecting pipe 17 is arranged in the second water pump 18, and the water delivery end of the second connecting pipe 17 extends into the liquid storage tank 6.

[0029] Working principle: The liquid in the liquid storage tank 6 is sent into the treatment tower 2 through the first water pump 15, and then when the liquid in the liquid storage tank 6 is sent into the treatment tower 2, the anti-corrosion plate 10 will be flushed, and then the excess liquid will remain between the anti-corrosion plates 10, and then the second water pump 18 will be turned on, and then the second water pump 18 will send the desulfurization liquid into the collection box through the second connecting pipe 17, so that the desulfurization liquid can be recycled, thereby saving the utilization rate of the desulfurization liquid.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid separation and purification device for petrochemical industry, comprising a bottom plate (1), characterized in that: A processing tower (2) is arranged on the upper surface of the bottom plate (1), four supporting legs (3) arranged in a circumferential array are fixedly mounted on the bottom of the processing tower (2), an air inlet (4) is provided on the front surface of the processing tower (2), a slurry pool (5) is arranged at the bottom of the processing tower (2), a liquid storage tank (6) is arranged near the rear end of the upper surface of the bottom plate (1), a tank cover (7) is arranged at the top of the liquid storage tank (6), and lid handles (8) are fixedly mounted on both side end surfaces of the tank cover (7), and a limit plate (9) is arranged near the middle of the inner wall of the processing tower (2).

2. A gas-liquid separation and purification device for petrochemical industry according to claim 1, characterized in that: An anti-corrosion plate (10) is arranged on the limiting plate (9) arranged in the treatment tower (2). The anti-corrosion plate (10) is conical in shape, and a plurality of through holes (11) arranged in a circular array are formed at the top of the anti-corrosion plate (10).

3. A gas-liquid separation and purification device for petrochemical industry according to claim 1, characterized in that: The top of the treatment tower (2) is provided with a top cover (12), a water inlet (13) is provided at the middle position of the top of the top cover (12), and an exhaust port (14) is provided at the upper end of the top cover (12).

4. A gas-liquid separation and purification device for petrochemical industry according to claim 1, characterized in that: A first water pump (15) is arranged at the middle position of the top end of the tank cover (7), a first connecting pipe (16) is arranged in the first water pump (15), a water pumping end of the first connecting pipe (16) extends into the liquid storage tank (6), a water delivery end of the first connecting pipe (16) extends into the treatment tower (2), a second connecting pipe (17) is arranged near the middle of the treatment tower (2), the second connecting pipe (17) is arranged in a second water pump (18), and a water delivery end of the second connecting pipe (17) extends into the liquid storage tank (6).

5. A gas-liquid separation and purification device for petrochemical industry according to claim 1, characterized in that: A first liquid discharge port (19) is provided on one end surface of the liquid storage tank (6), and a second liquid discharge port (20) is provided at the middle position of the bottom of the treatment tower (2).

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