Waste gas washing tower
By designing a conical condensing hood and a multi-layer spraying system exhaust gas scrubber, the problems of incomplete spraying and water mist emission are solved, and efficient purification of waste gas and environmentally friendly emissions are achieved.
Patent Information
- Application Number
- CN202422461528.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The existing waste gas absorption towers are not sprayed thoroughly during the purification process, resulting in the emissions not meeting the standards. At the same time, the heat-containing waste gas takes away a lot of water mist and pollutes the environment.
An exhaust gas scrubber is designed, adopting a conical condensing hood and a multi-layer spraying system, including an activated carbon filter plate, first and second spray pipes. Through the flow-sharing tank and air flow channel design, the bubbles are uniformly distributed and thoroughly sprayed, and combined with a conical condensing hood to cool down and the activated carbon filter plate to remove odor.
It has achieved efficient purification of waste gas, removal of dust and odors, reduced water mist emissions, and met standards for emissions.
Smart Images
Figure CN223184300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste gas purification, in particular to a waste gas washing tower. Background Art
[0002] At present, some industrial waste gas contains a large amount of dust, which will seriously pollute the environment if discharged directly. Most of the existing waste gas absorption towers purify the gas by mixing it with the gas through a spraying system. However, the waste gas spraying is not thorough enough, resulting in substandard emissions. At the same time, the waste gas containing heat can easily carry away a large amount of water mist during purification. Utility Model Content
[0003] The purpose of this utility model is to provide a waste gas washing tower in view of the above-mentioned shortcomings.
[0004] The utility model includes a tower body, an exhaust port is provided at the top of the tower body, a sewage outlet is provided at the bottom of the tower body, an activated carbon filter plate, a conical condensation hood, a first spray pipe and a second spray pipe are sequentially provided in the tower body from top to bottom, the conical condensation hood is formed by a circular array of multiple fan-shaped hollow plates, two adjacent fan-shaped hollow plates partially overlap, and an air flow channel is provided at the overlapping portion, a water inlet is provided at one end of the top of the fan-shaped hollow plate, a drain outlet is provided at one end of the bottom of the fan-shaped hollow plate, a circle of drain pipes communicating with the drain outlets of each fan-shaped hollow plate is provided at the bottom of the conical condensation hood, and a water inlet pipe communicating with the water inlet of each fan-shaped hollow plate is provided at the top of the conical condensation hood;
[0005] The tower body is provided with a first spray mounting plate and a second spray mounting plate respectively. The nozzles of the first spray pipe are evenly distributed in the middle of the first spray mounting plate, and the nozzles of the second spray pipe are evenly distributed in the middle of the second spray mounting plate. Air flow channels are opened around the first spray mounting plate and in the middle of the second spray mounting plate.
[0006] The lower part of the tower body is a water storage chamber, and a flow balancing trough with an open top is provided in the water storage chamber. The flow balancing trough is a truncated cone-shaped trough with a top diameter larger than the bottom diameter. The bottom of the flow balancing trough is arc-shaped. A group of flow balancing trough support plates are arranged in a circular array on the inner wall of the tower body. An air inlet is provided on the tower body between the flow balancing trough and the second spray pipe, and an air inlet pipe is provided on the air inlet with one end obliquely extending into the flow balancing trough, and the air outlet of the air inlet pipe deviates from the central axis of the flow balancing trough.
[0007] The spraying areas of the nozzles of the first spray pipe and the second spray pipe are both larger than the opening area of the air flow channel on the second spray mounting plate.
[0008] One end of the top of the flow balancing trough support plate is an inclined surface close to the outer wall of the flow balancing trough, and the length of the flow balancing trough support plate is greater than the height of the flow balancing trough.
[0009] The flow balancing trough is a honeycomb plastic trough, and the wall thickness of the flow balancing trough is not less than 30mm.
[0010] The bottom of the tower body is arc-shaped, a sewage outlet of the tower body is provided with a sewage pipe, and a pair of plug-in valves are provided on the sewage pipe.
[0011] A flow equalizing net is provided on the air outlet of the air inlet pipe.
[0012] A drain outlet is provided on the side wall of the water storage chamber below the equalizing trough. A water storage cylinder connected to the drain outlet is provided on one side of the tower body. A filter cartridge is provided in the water storage cylinder. The upper part of the water storage cylinder is connected to the water inlets of the first spray pipe and the second spray pipe respectively through a pump.
[0013] The advantages of the utility model are: the exhaust gas enters the equalizing flow trough for primary filtration and forms bubbles, and at the same time the liquid in the equalizing flow trough flows, the bubbles are distributed more evenly, a divergent air flow channel is formed between the first spray pipe and the second spray pipe, so that the spraying is more thorough, and the gas is cooled in the conical condensation hood, which facilitates the condensation and reflux of part of the water mist. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic structural diagram of the utility model.
[0015] Figure 2 It is a schematic diagram of the conical condensation hood structure. DETAILED DESCRIPTION
[0016] As shown in the accompanying drawings, the utility model includes a tower body 1, an exhaust port is provided at the top of the tower body 1, a sewage outlet is provided at the bottom of the tower body 1, and an activated carbon filter plate 3, a conical condensation hood 4, a first spray pipe 5 and a second spray pipe 6 are sequentially provided in the tower body 1 from top to bottom. The conical condensation hood 4 is composed of a plurality of circular arrays of fan-shaped hollow plates. Two adjacent fan-shaped hollow plates partially overlap, and an air flow channel is provided at the overlap. A water inlet is provided at one end of the top of the fan-shaped hollow plate, and a drain port is provided at one end of the bottom of the fan-shaped hollow plate. A circle of drain pipes communicating with the drain ports of each fan-shaped hollow plate is provided at the bottom of the conical condensation hood 4, and a water inlet pipe communicating with the water inlet of each fan-shaped hollow plate is provided at the top of the conical condensation hood 4.
[0017] The tower body 1 is provided with a first spray mounting plate 8 and a second spray mounting plate 9, respectively. The nozzles of the first spray pipe 5 are evenly distributed in the middle of the first spray mounting plate 8, and the nozzles of the second spray pipe 6 are evenly distributed in the middle of the second spray mounting plate 9. Air flow channels are opened around the first spray mounting plate 8 and in the middle of the second spray mounting plate 9.
[0018] The lower part of the tower body 1 is a water storage chamber, and a flow balancing trough 10 with an open top is provided in the water storage chamber. The flow balancing trough 10 is a truncated cone-shaped trough with a top diameter larger than the bottom diameter. The bottom of the flow balancing trough 10 is arc-shaped. A group of flow balancing trough support plates 11 are arranged in a circular array on the inner wall of the tower body 1. An air inlet is provided on the tower body 1 between the flow balancing trough 10 and the second spray pipe 6, and an air inlet pipe 12 is provided on the air inlet, one end of which extends obliquely into the flow balancing trough 10, and the air outlet of the air inlet pipe 12 deviates from the central axis of the flow balancing trough 10.
[0019] The spraying areas of the nozzles of the first spray pipe 5 and the second spray pipe 6 are both larger than the opening area of the air flow channel on the second spray mounting plate 9 .
[0020] One end of the top of the flow balancing trough support plate 11 is an inclined surface close to the outer wall of the flow balancing trough 10 , and the length of the flow balancing trough support plate 11 is greater than the height of the flow balancing trough 10 .
[0021] The flow balancing groove 10 is a honeycomb plastic groove, and the wall thickness of the flow balancing groove 10 is not less than 30 mm.
[0022] The bottom of the tower body 1 is arc-shaped, and a sewage pipe is provided on the sewage outlet of the tower body 1, and a pair of gate valves are provided on the sewage pipe.
[0023] A flow balancing net 20 is provided on the air outlet of the air inlet pipe 12 .
[0024] A drain outlet is provided on the side wall of the water storage chamber below the equalizing trough 10. A water storage cylinder 21 communicating with the drain outlet is provided on one side of the tower body 1. A filter cartridge 23 is provided in the water storage cylinder 21. The upper part of the water storage cylinder 21 is communicated with the water inlets of the first spray pipe 5 and the second spray pipe 6 respectively through a pump.
[0025] Working mode and principle: When in working state, the water level in the water storage chamber at the lower part of the tower body 1 exceeds the equalizing flow groove 10. When the exhaust gas enters from the air inlet pipe 12, it pushes the water in the equalizing flow groove 10 to flow, so that the bubbles in the equalizing flow groove 10 are evenly distributed. The equalizing flow groove 10 divides the water storage chamber into two parts, the upper water is in a flowing state, and the lower water is relatively still. The equalizing flow groove support plate 11 plays a role in blocking the flow, keeping the lower water in a relatively still state. The purified particles in the exhaust gas can enter the relatively still lower part from the pores of the equalizing flow groove 10 to facilitate precipitation. The gas filtered from the flow balancing trough 10 passes through the second spray mounting plate 9, the first spray mounting plate 8, the conical condensation hood 4 and the activated carbon filter plate 3 in sequence and is discharged from the exhaust port on the top of the tower body 1. When the gas passes through the second spray mounting plate 9 and the first spray mounting plate 8, it is sprayed by the nozzles of the second spray pipe 6 and the first spray pipe 5 respectively, and is fully mixed to purify the dust in the gas. The gas with water mist is pre-cooled when passing through the conical condensation hood 4, condensed into water droplets and falls back. The activated carbon filter plate 3 removes the odor of the passing gas before discharge; the turbid liquid after spraying enters the water storage cylinder 21, is filtered by the filter cylinder 23, and then supplied to the first spray pipe 5 and the second spray pipe 6 through a pump.
[0026] The spraying area of the nozzles of the first spray pipe 5 and the second spray pipe 6 is larger than the area of the air flow channel on the second spray mounting plate 9. The gas discharged from the flow equalizing groove 10 is concentrated through the air flow channel of the second spray mounting plate 9, and then diverges through the air flow channels around the first spray mounting plate 8. When the air flow passes through, the nozzles of the first spray pipe 5 and the second spray pipe 6 can completely cover the upper and lower ends of the air flow channel of the second spray mounting plate 9.
[0027] One end of the top of the flow trough support plate 11 is a slope that is close to the outer wall of the flow trough 10. The length of the flow trough support plate 11 is greater than the height of the flow trough 10. The flow trough support plate 11 plays a supporting role while also playing a flow blocking role, so that the liquid below the flow trough 10 remains relatively still, which is convenient for dust precipitation.
[0028] The flow balancing groove 10 is a honeycomb plastic groove, which is convenient for impurities to pass through. The wall thickness of the flow balancing groove 10 is not less than 30 mm, which can reduce the impact of the liquid flowing in the flow balancing groove 10 on the relatively static liquid below the flow balancing groove 10.
[0029] A flow balancing net 20 is provided on the gas outlet of the gas inlet pipe 12 so that the gas entering the flow balancing tank 10 is evenly dispersed.
Claims
1. A waste gas scrubber, characterized in that It comprises a tower body (1), the top of the tower body (1) is provided with an exhaust port, the bottom of the tower body (1) is provided with a sewage outlet, the tower body (1) is provided with an activated carbon filter plate (3), a conical condensation hood (4), a first spray pipe (5) and a second spray pipe (6) in sequence from top to bottom, the conical condensation hood (4) is formed by a circular array of multiple fan-shaped hollow plates, two adjacent fan-shaped hollow plates partially overlap, and an air flow channel is provided at the overlapped portion, a water inlet is provided at one end of the top of the fan-shaped hollow plate, a drain outlet is provided at one end of the bottom of the fan-shaped hollow plate, a circle of drain pipes communicating with the drain outlets of each fan-shaped hollow plate is provided at the bottom of the conical condensation hood (4), and a water inlet pipe communicating with the water inlet of each fan-shaped hollow plate is provided at the top of the conical condensation hood (4); A first spray mounting plate (8) and a second spray mounting plate (9) are respectively provided in the tower body (1); the nozzles of the first spray pipe (5) are evenly distributed in the middle of the first spray mounting plate (8); the nozzles of the second spray pipe (6) are evenly distributed in the middle of the second spray mounting plate (9); and air flow channels are provided around the first spray mounting plate (8) and in the middle of the second spray mounting plate (9); The lower part of the tower body (1) is a water storage chamber, and a flow balancing trough (10) with an open top is provided in the water storage chamber. The flow balancing trough (10) is a truncated cone-shaped trough with a top diameter larger than a bottom diameter. The bottom of the flow balancing trough (10) is arc-shaped. A group of flow balancing trough support plates (11) are arranged in a circular array on the inner wall of the tower body (1). An air inlet is provided on the tower body (1) between the flow balancing trough (10) and the second spray pipe (6), and an air inlet pipe (12) is provided on the air inlet, one end of which is inclined and extends into the flow balancing trough (10). The air outlet of the air inlet pipe (12) deviates from the central axis of the flow balancing trough (10).
2. The exhaust gas scrubber according to claim 1, characterized in that The spraying areas of the nozzles of the first spray pipe (5) and the second spray pipe (6) are both larger than the opening area of the air flow channel on the second spray mounting plate (9).
3. The exhaust gas scrubber according to claim 1, characterized in that One end of the top of the flow balancing trough support plate (11) is an inclined surface that is in close contact with the outer wall of the flow balancing trough (10), and the length of the flow balancing trough support plate (11) is greater than the height of the flow balancing trough (10).
4. The exhaust gas scrubber according to claim 1, characterized in that The flow balancing groove (10) is a honeycomb plastic groove, and the wall thickness of the flow balancing groove (10) is not less than 30 mm.
5. The exhaust gas scrubber according to claim 1, characterized in that The bottom of the tower body (1) is arc-shaped, and a sewage pipe is provided on the sewage outlet of the tower body (1), and a pair of plug-in valves are provided on the sewage pipe.
6. The exhaust gas scrubber according to claim 1, characterized in that A flow balancing net (20) is provided on the air outlet of the air inlet pipe (12).
7. The exhaust gas scrubber according to claim 1, characterized in that A drainage outlet is provided on the side wall of the water storage chamber below the equalizing trough (10). A water storage cylinder (21) communicating with the drainage outlet is provided on one side of the tower body (1). A filter cartridge (23) is provided in the water storage cylinder (21). The upper portion of the water storage cylinder (21) is communicated with the water inlets of the first spray pipe (5) and the second spray pipe (6) respectively through a pump.