Waste gas treatment water scrubber

Abstract

The utility model discloses a waste gas treatment water scrubber which comprises a cylindrical tank body, a tail gas pipe connected with the bottom of the side wall of the tank body, an exhaust pipe connected with the top of the tank body, a water supply pipe connected with the top of the side wall of the tank body and a water drainage pipe connected with the bottom of the tank body, the bottom in the tank body is provided with an aeration pipe of which the output end is positioned in the water body at the bottom in the tank body, and the aeration pipe is connected with a tail gas pipe. The cooling performance of the water scrubber is enhanced, and the situation that an oil film is attached to the interior of a cooling device when a front-end pre-cooling device is adopted for treating oil-containing waste gas is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to a waste gas treatment water washing tower. Background Art

[0002] Before the waste gas enters the water scrubber for purification, it often needs to be pre-treated through an air-to-air heat exchanger. This process is designed to recover the heat in the waste gas, reduce energy consumption, and pre-cool the waste gas to facilitate the smooth progress of the subsequent water washing process. However, when the oily waste gas passes through the heat exchanger, the oil will adhere to the inner wall of the heat exchanger. Especially when the heat exchange efficiency is too high, the oil will condense and deposit on the fins, causing the heat exchange efficiency to gradually decrease over time and increase maintenance costs. By eliminating the heat exchange pretreatment equipment for the oily waste gas and directly washing it with water, the existing water washing device cannot reduce the temperature of the oily waste gas to the set discharge temperature. For this reason, we designed a waste gas treatment water scrubber that can efficiently reduce the temperature. Summary of the invention

[0003] The technical problem to be solved by the utility model is that the cooling performance of the water washing device is insufficient.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a waste gas treatment water washing tower, including a cylindrical tank body, a tail gas pipe connected to the bottom of the tank side wall, an exhaust pipe connected to the top of the tank body, a water supply pipe connected to the top of the tank side wall and a drainage pipe connected to the bottom of the tank body, an array of atomizing nozzles arranged in a ring shape is arranged on the top of the tank body, the array of atomizing nozzles is connected to the water supply pipe, an aeration pipe with an output end located in the water body at the bottom of the tank body is arranged at the bottom of the tank body, and the aeration pipe is connected to the tail gas pipe.

[0005] Preferably, a ventilation ring is fixedly arranged in the tank body, the ventilation ring is connected to the tail gas pipe, the aeration pipe is connected to the bottom of the ventilation ring, and the aeration pipe is arranged at equal angles around the axis of the ventilation ring.

[0006] Preferably, the aeration pipe is arranged obliquely, and the movable end of the aeration pipe faces the axial direction of the ventilation ring.

[0007] Preferably, the bottom of the tank body is an inverted truncated cone structure, and a filter plate is horizontally arranged at the inner bottom of the tank body, and the filter plate is located directly below the movable end of the aeration pipe.

[0008] Preferably, the bottom of the filter plate is connected to the inner wall of the tank body through a spring column.

[0009] Preferably, a truncated cone-shaped flow guide cylinder is vertically fixedly arranged in the middle of the tank body, a gap is arranged between the outer wall of the flow guide cylinder and the inner wall of the tank body, and through holes are evenly arranged on the outer wall of the flow guide cylinder.

[0010] Preferably, a spray ring pipe is fixedly provided on the top of the tank body, the array-type atomizing nozzle is arranged on the spray ring pipe, the water supply pipe is connected to the spray ring pipe, a spray head is fixedly provided in the middle of the spray ring pipe, and the flow rate of the spray head is greater than the flow rate of a single array-type atomizing nozzle.

[0011] 1. The utility model provides a waste gas treatment water washing tower. The tail gas pipe transports the high-temperature waste gas into the tank body, and the waste gas is aerated by the water at the bottom of the tank body. The waste gas cooled by aeration is washed with water again. After the washing is completed, the cooled waste gas is discharged, thereby achieving water washing and cooling of the waste gas.

[0012] 2. Arrange the aeration pipe array to divert the exhaust gas, increase the contact area between the exhaust gas and the water at the bottom of the tank, and thus improve the cooling efficiency.

[0013] 3. The array atomizing nozzle can evenly wash the waste gas in the tank with water to ensure the quality of waste gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the spray ring pipe in the embodiment of the utility model.

[0018] In the figure: 1. tank body; 2. tail gas pipe; 3. water supply pipe; 4. drainage pipe; 5. exhaust pipe; 6. base; 7. baffle; 8. ventilation ring; 9. aeration pipe; 10. filter plate; 11. guide tube; 12. spray ring pipe; 13. array atomizing nozzle; 14. spray head. DETAILED DESCRIPTION

[0019] like Figure 1-3 As shown, the utility model proposes a waste gas treatment water washing tower, including a cylindrical tank body 1, a tail gas pipe 2 connected to the bottom of the side wall of the tank body 1, an exhaust pipe 5 connected to the top of the tank body 1, a water supply pipe 3 connected to the top of the side wall of the tank body 1 and a drainage pipe 4 connected to the bottom of the tank body 1, an array of atomizing nozzles 13 arranged in a ring shape is arranged on the top of the tank body 1, the array of atomizing nozzles 13 is connected to the water supply pipe 3, an aeration pipe 9 with an output end located in the water body at the bottom of the tank body 1 is arranged at the bottom of the tank body 1, and the aeration pipe 9 is connected to the tail gas pipe 2.

[0020] The high-temperature exhaust gas is transported to the interior of the tank body 1 through the tail gas pipe 2, and the high-temperature exhaust gas enters the aeration pipe 9, and is transported to the inner bottom of the tank body 1 through the aeration pipe 9. The drainage flow of the drain pipe 4 is controlled, and a certain water level is maintained at the bottom of the tank body 1. The bottom end of the aeration pipe 9 is in the water at the bottom of the tank body 1. The high-temperature exhaust gas will be aerated when it is discharged to achieve cooling of the high-temperature exhaust gas.

[0021] After emerging from the water, the high-temperature exhaust gas continues to flow upward along the tank body 1, and the washing liquid is transported to the array atomizing nozzle 13 through the water supply pipe 3. The array atomizing nozzle 13 sprays out atomized washing liquid, which is washed by water during the flow of the high-temperature exhaust gas. The washing realizes further cooling of the exhaust gas and removal of pollutants in the exhaust gas. Finally, the purified gas is discharged through the tail gas pipe 2 at the top of the tank body 1, and the washing liquid is temporarily retained at the bottom of the tank body 1, and then discharged into the recovery tank through the drain pipe 4. A baffle 7 with a rain cover structure is installed above the exhaust pipe 5 at the top of the tank body 1.

[0022] like Figure 2 A ventilation ring 8 is fixedly arranged in the tank body 1 , the ventilation ring 8 is connected to the tail gas pipe 2 , the aeration pipe 9 is connected to the bottom of the ventilation ring 8 , and the aeration pipe 9 is arranged at equal angles around the axis of the ventilation ring 8 .

[0023] The aeration pipes 9 are arranged in a circular array to divert the high-temperature exhaust gas, so that the exhaust gas flowing out of the aeration pipes 9 can be fully aerated and washed, thereby effectively reducing the temperature of the exhaust gas.

[0024] like Figure 2 As shown. The aeration pipe 9 is arranged at an angle, and the movable end of the aeration pipe 9 is oriented toward the axial direction of the ventilation ring 8. The air outlet end of the aeration pipe 9 is concentrated toward the center line of the tank body 1, so that the water washing liquid at the bottom of the tank body 1 surges, the flow of the water washing liquid is strengthened, and the water washing liquid is evenly contacted with the high-temperature exhaust gas, thereby improving the heat exchange efficiency. The inner bottom of the tank body 1 is arranged in an inverted truncated cone shape, which is similar to the inclined form of the aeration pipe 9, and can make full use of the water washing liquid. An annular base 6 is coaxially fixedly arranged at the bottom of the tank body 1, and the top of the base 6 supports the bottom of the tank body 1 through diagonal support rods evenly arranged around the axis.

[0025] like Figure 2 As shown. The bottom of the tank body 1 is an inverted truncated cone structure, and a filter plate 10 is horizontally arranged at the bottom of the tank body 1, and the filter plate 10 is located directly below the movable end of the aeration pipe 9. When the high-temperature flue gas flows out, it contacts the filter plate 10, which can separate the air masses. The separated air masses are smaller in volume and the heat exchange is more uniform. The filter plate 10 can filter out large impurities to prevent large impurities from clogging the drain pipe 4 or entering the recovery tank.

[0026] like Figure 2As shown. The bottom of the filter plate 10 is connected to the inner wall of the tank body 1 through a spring column. During aeration, the filter plate 10 will be impacted, causing the filter plate 10 to vibrate, thereby enhancing the filter plate 10's ability to cut air masses, while preventing impurities from being flattened and accumulated on the filter plate 10, causing blockage of the filter plate 10, and maintaining smooth drainage.

[0027] like Figure 2 As shown. A truncated cone-shaped guide tube 11 is vertically fixed in the middle of the tank body 1. A gap is provided between the outer wall of the guide tube 11 and the inner wall of the tank body 1. Through holes are evenly provided on the outer wall of the guide tube 11. The guide tube 11 can guide a large amount of exhaust gas, and then use the spray head 14 to perform a large amount of cooling and atomization water washing. In addition, the guide tube 11 will be cooled by water washing, and the exhaust gas will be heat exchanged again when passing through the through holes and when being guided by the guide tube 11.

[0028] like Figure 1 and Figure 3 As shown. A spray ring pipe 12 is fixedly arranged at the top of the tank body 1, the array atomizing nozzle 13 is arranged on the spray ring pipe 12, the water supply pipe 3 is connected to the spray ring pipe 12, and a spray head 14 is fixedly arranged in the middle of the spray ring pipe 12, and the flow rate of the spray head 14 is greater than the flow rate of a single array atomizing nozzle 13. The spray head 14 located in the middle supplements the array atomizing nozzle 13, so that the atomized water washing liquid is evenly distributed.

Claims

1. A waste gas treatment water washing tower, characterized in that: The invention comprises a cylindrical tank body (1), an exhaust pipe (2) connected to the bottom of the side wall of the tank body (1), an exhaust pipe (5) connected to the top of the tank body (1), a water supply pipe (3) connected to the top of the side wall of the tank body (1), and a drainage pipe (4) connected to the bottom of the tank body (1); an array of atomizing nozzles (13) arranged in a ring are arranged at the top of the tank body (1); the array of atomizing nozzles (13) are connected to the water supply pipe (3); an aeration pipe (9) with an output end located in the water body at the bottom of the tank body (1) is arranged at the bottom of the tank body (1); and the aeration pipe (9) is connected to the exhaust pipe (2).

2. A waste gas treatment water washing tower as claimed in claim 1, characterized in that: A ventilation ring (8) is fixedly arranged in the tank body (1), the ventilation ring (8) is connected to the tail gas pipe (2), the aeration pipe (9) is connected to the bottom of the ventilation ring (8), and the aeration pipe (9) is arranged at equal angles around the axis of the ventilation ring (8).

3. A waste gas treatment water washing tower as claimed in claim 2, characterized in that: The aeration pipe (9) is arranged obliquely, and the movable end of the aeration pipe (9) faces the axial direction of the ventilation ring (8).

4. A waste gas treatment water washing tower as claimed in claim 1, characterized in that: The bottom of the tank body (1) is in an inverted truncated cone-shaped structure. A filter plate (10) is horizontally arranged at the bottom of the tank body (1). The filter plate (10) is located directly below the movable end of the aeration pipe (9).

5. A waste gas treatment water washing tower as claimed in claim 4, characterized in that: The bottom of the filter plate (10) is connected to the inner wall of the tank body (1) via a spring column.

6. A waste gas treatment water washing tower as claimed in claim 1, characterized in that: A truncated cone-shaped flow guide cylinder (11) is vertically fixedly arranged in the middle of the tank body (1), a gap is arranged between the outer wall of the flow guide cylinder (11) and the inner wall of the tank body (1), and through holes are evenly arranged on the outer wall of the flow guide cylinder (11).

7. A waste gas treatment water washing tower as claimed in claim 6, characterized in that: A spray ring pipe (12) is fixedly arranged at the top of the tank body (1), the array-type atomizing nozzle (13) is arranged on the spray ring pipe (12), the water supply pipe (3) is connected to the spray ring pipe (12), a spray head (14) is fixedly arranged in the middle of the spray ring pipe (12), and the flow rate of the spray head (14) is greater than the flow rate of a single array-type atomizing nozzle (13).

Images