Low-pressure tail gas circulating water scrubber

Abstract

The utility model discloses a low-pressure tail gas circulating water washing tower, and belongs to the technical field of tail gas water washing. Comprising. Comprising a water scrubber main body, a circulating water injection assembly connected with the water scrubber main body, and a spraying disc assembly arranged on the inner wall of the water scrubber main body, the spraying disc assembly in the water washing tower is arranged in a wall-attached mode, passing resistance is small, low-pressure tail gas can pass through the water washing tower more smoothly, the gas-liquid contact opportunity is increased, and therefore the removal efficiency of pollutants in the low-pressure tail gas is improved; and the water is pumped into the water scrubber main body again through the water pump for recycling, so that the wastewater discharge to the environment is reduced, and the water scrubber has the advantages of energy conservation and emission reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas water washing, in particular to a low-pressure tail gas circulating water washing tower. Background Art

[0002] A water scrubber is a tower-type device that uses water or other liquids to remove unwanted components and solid dust particles from gases. It typically contains a packing layer, which increases the contact area between the gas and liquid, promoting the absorption or neutralization of pollutants. Within the tower, waste gases come into countercurrent contact with a spray liquid, achieving purification, dust removal, and cooling.

[0003] In low-pressure tail gas treatment, traditional water scrubbers can experience significant ventilation resistance due to the low gas pressure, which can affect treatment efficiency and increase energy consumption. Design considerations are crucial for reducing internal resistance to accommodate low-pressure conditions, ensuring smooth passage of tail gas through the tower while maintaining high treatment efficiency. Therefore, a water scrubber suitable for low-pressure tail gas is urgently needed.

[0004] The existing low-pressure tail gas water scrubber has large internal resistance when in use, which makes it difficult for the low-pressure tail gas to pass smoothly, reduces the treatment efficiency, and directly discharges wastewater, which increases the environmental burden and causes waste of resources. Utility Model Content

[0005] In view of the above problems, the utility model discloses a low-pressure tail gas circulating water washing tower.

[0006] The technical solution of the utility model is: a low-pressure tail gas circulating water washing tower, comprising a water washing tower body, a circulating water injection component connected to the water washing tower body, and a spray plate component arranged on the inner wall of the water washing tower body;

[0007] The lower end of the water washing tower body is provided with a ventilation opening and a liquid outlet, and the upper end of the water washing tower body is provided with a liquid inlet and a gas outlet; the circulating water injection component is provided between the liquid inlet and the liquid outlet;

[0008] The spray plate assembly includes an annular water distribution plate arranged on the inner wall of the water washing tower body, a plurality of mounting recesses arranged circumferentially on the inner wall of the annular water distribution plate, and a spray plate arranged in each of the mounting recesses and having a plurality of spray ports on the side wall. The spray plate is connected to the annular water distribution plate through a connecting hose.

[0009] Furthermore, the circulating water injection assembly includes a filter connected to the liquid outlet and a water pump connected to the filter. The water pump is connected to the liquid inlet through a connecting pipe and an electromagnetic valve is provided at the connection.

[0010] Description: The waste liquid after washing at the bottom of the water washing tower body flows into the filter through the liquid outlet, is filtered by the filter, and then pumped back into the water washing tower body through the water pump for recycling, which reduces the wastewater discharge to the environment and has the advantages of energy saving and emission reduction.

[0011] Furthermore, each of the mounting recesses is connected to a mounting cross bar via a first electric telescopic rod, the spray plate is hinged to one end of the corresponding mounting cross bar, and the spray plate and the mounting cross bar are connected via a second electric telescopic rod.

[0012] Note: When adjusting the spray angle of the spray plate according to the pressure of the exhaust gas, start each first electric telescopic rod to move the corresponding mounting cross bar toward the center of the water washing tower body. At the same time, start the second electric telescopic rod to rotate the spray plate through the action of the second electric telescopic rod, thereby achieving the purpose of adjusting the spray angle and indirectly adjusting the passage rate of the exhaust gas, ensuring sufficient contact between the exhaust gas and the washing liquid, and improving the washing effect of the exhaust gas washing.

[0013] Furthermore, a pressure gauge is provided on the water washing tower body.

[0014] Note: The air pressure value inside the water scrubber body is detected by a pressure gauge. By maintaining an appropriate air pressure value, the contact effect between the exhaust gas and the water scrubbing liquid can be optimized, thereby improving the efficiency of exhaust gas treatment.

[0015] Furthermore, a cleaning port and a transparent observation port are provided on the side wall of the water washing tower body, and a cleaning valve is provided at the cleaning port.

[0016] Note: The internal cleanliness of the water washing tower body can be observed intuitively through the transparent observation port. When the sediment in the waste liquid accumulates in the water washing tower body, the cleaning valve can be opened for cleaning, which provides convenience and efficiency for the maintenance and cleaning of the water washing tower body.

[0017] Beneficial effects of the utility model:

[0018] (1) The spray plate assembly in the water washing tower of the utility model is arranged close to the wall, with low passage resistance, which facilitates the smoother passage of low-pressure exhaust gas and increases the chance of gas-liquid contact, thereby improving the removal efficiency of pollutants in the low-pressure exhaust gas. At the same time, the waste liquid after water washing at the bottom of the water washing tower body is filtered and treated by the circulating water injection assembly, and then pumped back into the water washing tower body by the water pump for recycling, which reduces the discharge of wastewater to the environment and has the advantages of energy saving and emission reduction;

[0019] (2) The spray angle of the spray disc assembly in the water washing tower of the utility model can be adjusted according to the pressure of the exhaust gas, that is, the passing rate of the exhaust gas is indirectly adjusted to ensure sufficient contact between the exhaust gas and the water washing liquid, thereby improving the washing effect of the exhaust gas water washing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall external structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall internal structure of the utility model;

[0022] Figure 3 This utility model Figure 2 A magnified view of point A in the figure;

[0023] Figure 4 It is a top view of the spray disc assembly of the present utility model.

[0024] Among them, 1-water washing tower body, 10-ventilation opening, 11-liquid outlet, 12-liquid inlet, 13-air outlet, 14-pressure gauge, 15-cleaning port, 16-transparent observation port, 2-circulating water injection assembly, 20-filter, 21-water pump, 22-electromagnetic valve, 3-spray plate assembly, 30-annular water distribution plate, 31-installation recess, 310-first electric telescopic rod, 311-installation cross bar, 312-second electric telescopic rod, 32-spray plate, 320-spray port. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 1 、 2 3, a low-pressure tail gas circulating water scrubber, comprising a water scrubber body 1, a circulating water injection assembly 2 connected to the water scrubber body 1, and a spray plate assembly 3 provided on the inner wall of the water scrubber body 1;

[0027] The lower end of the water scrubber body 1 is provided with a vent opening 10 and a liquid outlet 11, and the upper end of the water scrubber body 1 is provided with a liquid inlet 12 and an air outlet 13; the circulating water injection assembly 2 is arranged between the liquid inlet 12 and the liquid outlet 11, and the water scrubber body 1 is provided with a barometer 14, which detects the air pressure value in the water scrubber body 1 through the barometer 14. By maintaining an appropriate air pressure value, the contact effect between the exhaust gas and the water scrubber can be optimized, thereby improving the efficiency of the exhaust gas treatment. Among them, the barometer 14 belongs to the prior art;

[0028] The side wall of the water washing tower body 1 is provided with a cleaning port 15 and a transparent observation port 16. The cleaning port 15 is provided with a cleaning valve. The internal cleanliness of the water washing tower body 1 can be visually observed through the transparent observation port 16. When the sediment in the waste liquid accumulates in the water washing tower body 1, the cleaning valve can be opened for cleaning, which provides convenience and efficiency for the maintenance and cleaning of the water washing tower body 1.

[0029] The spray plate assembly 3 includes an annular water distribution plate 30 provided on the inner wall of the water washing tower body 1, four mounting recesses 31 provided circumferentially on the inner wall of the annular water distribution plate 30, and a spray plate 32 provided in each mounting recess 31 and having ten spray ports 320 on the side wall. The spray plate 32 is connected to the annular water distribution plate 30 via a connecting hose.

[0030] The circulating water injection assembly 2 includes a filter 20 connected to the liquid outlet 11 and a water pump 21 connected to the filter 20. The water pump 21 is connected to the liquid inlet 12 through a connecting pipe and an electromagnetic valve 22 is provided at the connection. The waste liquid after washing at the bottom end of the water washing tower body 1 flows into the filter 20 through the liquid outlet 11, is filtered by the filter 20, and then is re-pumped into the water washing tower body 1 through the water pump 21 for recycling, thereby reducing wastewater discharge to the environment and having the advantages of energy saving and emission reduction. Among them, the filter 20, the water pump 21 and the electromagnetic valve 22 all adopt existing technologies;

[0031] Each mounting recess 31 is connected to a mounting cross bar 311 via a first electric telescopic rod 310, and the spray plate 32 is hinged to one end of the corresponding mounting cross bar 311. The spray plate 32 and the mounting cross bar 311 are connected via a second electric telescopic rod 312. When adjusting the spray angle of the spray plate 32 according to the pressure of the exhaust gas, each first electric telescopic rod 310 is started to move the corresponding mounting cross bar 311 toward the center of the water washing tower body 1. At the same time, the second electric telescopic rod 312 is started. The spray plate 32 is rotated through the action of the second electric telescopic rod 312, thereby achieving the purpose of adjusting the spray angle and indirectly adjusting the passing rate of the exhaust gas, ensuring sufficient contact between the exhaust gas and the washing liquid, and improving the washing effect of the exhaust gas washing. Among them, the first electric telescopic rod 310 and the second electric telescopic rod 312 both adopt existing technologies.

[0032] A method for using a low-pressure tail gas circulating water scrubber according to this embodiment includes the following steps:

[0033] S1, the tail gas enters the water scrubber body 1 through the ventilation opening 10 and diffuses upward in the water scrubber body 1. At the same time, the washing liquid enters the annular water distribution tray 30 through the liquid inlet 12 and flows to the spray plate 32 through the connecting hose. The spray ports 320 on the side wall of the spray plate 32 evenly spray the washing liquid and wash the low-pressure tail gas. The washed tail gas is discharged through the gas outlet 13.

[0034] S2, the waste liquid after washing flows into the filter 20 through the liquid outlet 11, is filtered by the filter 20, and then is pumped back into the water washing tower body 1 by the water pump 21 for recycling;

[0035] S3. Detect the air pressure value in the water scrubber main body 1 through the barometer 14, and adjust the spray angle of the spray plate 32 according to the pressure of the exhaust gas. That is, start each first electric telescopic rod 310 to move the corresponding mounting cross bar 311 toward the center of the water scrubber main body 1. At the same time, start the second electric telescopic rod 312 to rotate the spray plate 32 through the action of the second electric telescopic rod 312.

Claims

1. A low-pressure tail gas circulating water washing tower, characterized in that: It comprises a water washing tower body (1), a circulating water injection assembly (2) connected to the water washing tower body (1), and a spray plate assembly (3) arranged on the inner wall of the water washing tower body (1); The lower end of the water washing tower body (1) is provided with a ventilation opening (10) and a liquid outlet (11), and the upper end of the water washing tower body (1) is provided with a liquid inlet (12) and a gas outlet (13); the circulating water injection component (2) is provided between the liquid inlet (12) and the liquid outlet (11); The spray plate assembly (3) comprises an annular water distribution plate (30) arranged on the inner wall of the water washing tower body (1), a plurality of mounting recesses (31) circumferentially arranged on the inner wall of the annular water distribution plate (30), and a spray plate (32) arranged in each mounting recess (31) and having a plurality of spray ports (320) on the side wall. The spray plate (32) is connected to the annular water distribution plate (30) via a connecting hose.

2. A low-pressure tail gas circulating water scrubber according to claim 1, characterized in that: The circulating water injection assembly (2) comprises a filter (20) connected to the liquid outlet (11), and a water pump (21) connected to the filter (20); the water pump (21) is connected to the liquid inlet (12) via a connecting pipe, and an electromagnetic valve (22) is provided at the connection point.

3. A low-pressure tail gas circulating water scrubber according to claim 1, characterized in that: Each of the mounting recesses (31) is connected to a mounting cross bar (311) via a first electric telescopic rod (310); the spray plate (32) is hinged to one end of the corresponding mounting cross bar (311); and the spray plate (32) and the mounting cross bar (311) are connected via a second electric telescopic rod (312).

4. A low-pressure tail gas circulating water scrubber according to claim 1, characterized in that: The water washing tower body (1) is provided with a pressure gauge (14).

5. A low-pressure tail gas circulating water scrubber according to claim 1, characterized in that: A cleaning port (15) and a transparent observation port (16) are provided on the side wall of the water washing tower body (1), and a cleaning valve is provided at the cleaning port (15).

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