Gas washing equipment

Abstract

The utility model belongs to the technical field of gas washing, particularly relates to gas washing equipment, and aims to solve the problems that gas at the edge is insufficiently contacted with gas mist due to the fact that the gas mist at the edge is less than the gas mist in the middle of an existing umbrella-shaped spraying device, and the gas suction effect is reduced due to non-uniform distribution of the gas in a washing pool after escaping, the gas washing equipment comprises an equipment main body, a gas washing cavity is formed inside the equipment main body, the upper part of the gas washing cavity is provided with a gas outlet pipe penetrating through the outside of the equipment main body, a spraying device is arranged below the gas outlet pipe, the lower part of the gas washing cavity is provided with an overflow pipe and a liquid phase washing liquid inlet pipe, and the bottom of the gas washing tank is provided with a gas supply device; the spraying device comprises a main spraying head in the middle and an auxiliary spraying head arranged around the main spraying head, the main spraying head and the auxiliary spraying head are communicated with the gas-phase washing liquid inlet pipe through pipelines, the contact area of gas and washing liquid can be increased, and the gas washing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas washing, in particular to a gas washing device. Background Art

[0002] A gas washing device, also known as a gas washing apparatus or a gas scrubber, is a device used to remove impurity gases or pollutants from a mixed gas. Its working principle mainly utilizes the close contact between a liquid (such as a washing liquid) and a gas in the device, and through physical or chemical actions, separates the impurity gas from the mixed gas, thereby achieving the purpose of purifying the gas;

[0003] Existing gas washing devices generally form a gas washing pool at the bottom, distribute the gas evenly into the gas washing pool for the first - stage gas washing, and then the gas flow moves upward. A spraying device is arranged at the upper part to spray - wash the gas. However, the aerosol sprayed by the spray heads of the spraying device is in an umbrella shape. During the contact process between the evenly - distributed gas and the umbrella - shaped aerosol, the thickness of the aerosol near the edge of the umbrella - shaped aerosol is less than that of the aerosol in the middle. When the gas performs the suction operation through the aerosol at the edge, the contact with the aerosol is not sufficient;

[0004] In addition, during the upward movement of the gas at the bottom of the washing liquid pool, the bubbles will gradually increase. Therefore, the air outlet holes of the air flow distribution plate arranged at the bottom of the washing liquid pool cannot be set too densely. When set too densely, the gas will fuse with each other during the upward movement to form larger bubbles, which will reduce the gas washing efficiency. The gas escaping from the washing liquid pool directly contacts the upper spraying device, which is likely to reduce the gas washing effect due to uneven distribution. Summary of the Utility Model

[0005] The utility model provides a gas washing device, which solves the disadvantages in the prior art that the aerosol at the edge of the umbrella - shaped spraying device is less than that in the middle, so the gas at the edge does not contact the aerosol sufficiently, and the uneven distribution of the gas escaping from the washing pool reduces the suction effect.

[0006] The utility model provides the following technical solutions:

[0007] A gas washing device includes a device main body. A gas washing cavity is formed inside the device main body. An air outlet pipe penetrating to the outside of the device main body is arranged at the upper part of the gas washing cavity. A spraying device is arranged below the air outlet pipe. An overflow pipe and a liquid - phase washing liquid inlet pipe are arranged at the lower part of the gas washing cavity. A gas supply device is installed at the bottom of the gas washing pool; the spraying device includes a main spray head in the middle and auxiliary spray heads arranged around the main spray head. The main spray head and the auxiliary spray heads are connected to the gas - phase washing liquid inlet pipe through pipelines. By arranging the auxiliary spray heads around the main spray head, the thickness of the aerosol at the edge of the main spray head can be supplemented, so that the gas can fully contact the aerosol and improve the gas washing effect.

[0008] As a further improvement of the above solution.

[0009] Preferably, the air supply device is a disc-shaped air supply and distribution disc. A plurality of air outlet holes are formed in the air supply and distribution disc. The air supply and distribution disc is communicated with an air supply pipe, and the air supply pipe penetrates through the equipment main body and is connected to an air source. The disc-shaped air supply and distribution disc makes the air holes evenly distributed, and the air outlet pressure of each air hole is equal, so that the gas is evenly distributed in the washing pool, improving the gas washing effect.

[0010] Preferably, the overflow pipe and the liquid-phase washing liquid inlet pipe penetrate to the outside of the equipment main body and are communicated with a washing liquid storage pool. The water level of the overflow pipe orifice inside the gas washing cavity is higher than that of the overflow pipe orifice in the washing liquid storage pool. The overflow pipe and the liquid-phase washing liquid inlet pipe are used to keep a washing pool containing washing liquid formed at the lower part of the gas washing cavity. By setting the overflow pipe, the height of the washing pool is fixed, ensuring that the gas passing through the washing pool can be evenly distributed.

[0011] Preferably, a wire mesh bracket is installed above the washing pool, and a disc-shaped gas passing and distributing disc is placed on the upper part of the wire mesh bracket. A plurality of through holes for the gas flow to pass through are arranged on the gas passing and distributing disc, further evenly distributing the gas escaping from the washing pool, thereby improving the uniformity of the contact between the gas flow and the spraying device and enhancing the gas washing effect.

[0012] Preferably, a manhole communicating with the gas washing cavity is formed at the top of the equipment main body. An air outlet pipe penetrating to the outside of the equipment main body is arranged at the upper part of the gas washing cavity. The air outlet pipe is communicated with the manhole, and a demisting wire mesh is installed below the manhole to further clean and demist the gas before exhausting.

[0013] Preferably, the liquid-phase washing liquid inlet pipe and the gas-phase washing liquid inlet pipe are communicated through a pipeline. A first valve and a second valve are respectively connected to the liquid-phase washing liquid inlet pipe and the gas-phase washing liquid inlet pipe. The first valve and the second valve are connected to a liquid supply pump through pipelines, and the liquid supply pump is connected to the washing liquid storage pool through a pipeline, enabling the washing liquid to circulate automatically.

[0014] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present invention.

[0015] In the present invention, by providing an auxiliary spray head surrounding the main spray head, the thickness of the aerosol at the edge of the main spray head can be supplemented by the auxiliary spray head, so that the gas can fully contact the aerosol, improving the gas washing effect.

[0016] The disc-shaped air supply and distribution disc makes the air holes evenly distributed, and the air outlet pressure of each air hole is equal, so that the gas is evenly distributed in the washing pool, improving the gas washing effect.

[0017] The gas escaping from the sink is further evenly distributed, thereby improving the uniformity of the contact between the air flow and the spraying device and enhancing the gas washing effect. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a gas washing device provided by an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the spraying device of a gas washing device provided by an embodiment of the present invention.

[0020] Reference Signs:

[0021] 1, manhole; 2, outlet pipe; 3, demisting wire mesh; 4, main spray head; 5, gas-phase washing liquid inlet pipe; 6, auxiliary spray head; 7, gas passing and distributing plate; 8, wire mesh bracket; 9, overflow pipe; 10, liquid-phase washing liquid inlet pipe; 11, air supply and distributing plate; 12, air supply pipe; 13, washing liquid storage tank. Detailed Embodiments

[0022] The embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative positional relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only references to the directions of the drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention.

[0024] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0025] In the embodiments of the present utility model, "and / or" merely describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this article, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0026] Embodiment, refer to Figure 1 - Figure 2 , a gas scrubbing device, comprising a device main body. A gas scrubbing cavity is formed inside the device main body. A manhole 1 communicating with the gas scrubbing cavity is opened at the top of the device main body. An outlet pipe 2 penetrating to the outside of the device main body is arranged in the upper part of the gas scrubbing cavity. The outlet pipe 2 communicates with the manhole 1. A demisting wire mesh 3 is installed below the manhole 1;

[0027] A spraying device is arranged below the outlet pipe 2. The spraying device is communicated with a gas-phase washing liquid inlet pipe 5. The spraying device includes a main spray head 4 in the middle and auxiliary spray heads 6 arranged around the main spray head 4. The main spray head 4 and the auxiliary spray heads 6 are communicated with the gas-phase washing liquid inlet pipe 5 through pipes;

[0028] The gas-phase washing liquid inlet pipe 5 penetrates to the outside of the device main body and is connected to a liquid supply device. An overflow pipe 9 and a liquid-phase washing liquid inlet pipe 10 are arranged in the lower part of the gas scrubbing cavity. The overflow pipe 9 and the liquid-phase washing liquid inlet pipe 10 penetrate to the outside of the device main body and are communicated with a washing liquid storage tank 13. Wherein, the water level of the overflow pipe 9 opening inside the gas scrubbing cavity is higher than the overflow pipe 9 opening in the washing liquid storage tank 13. The gas scrubbing cavity lower part is maintained to form a gas scrubbing pool containing washing liquid through the overflow pipe 9 and the liquid-phase washing liquid inlet pipe 10;

[0029] A wire mesh bracket 8 is installed above the gas scrubbing pool. A disc-shaped gas passing and distributing plate 7 is placed on the upper part of the wire mesh bracket 8. A plurality of through holes for air flow to pass through are arranged on the gas passing and distributing plate 7.

[0030] The liquid-phase washing liquid inlet pipe 10 is communicated with the gas-phase washing liquid inlet pipe 5 through a pipe. A first valve and a second valve are respectively connected to the liquid-phase washing liquid inlet pipe 10 and the gas-phase washing liquid inlet pipe 5. The first valve and the second valve are connected to a liquid supply pump through pipes. The liquid supply pump is connected to the washing liquid storage tank 13 through a pipe;

[0031] A gas supply device is installed at the bottom of the gas scrubbing pool. The gas supply device is a disc-shaped gas supply and distributing plate 11. A plurality of air outlet holes are opened on the gas supply and distributing plate 11. The gas supply and distributing plate 11 is communicated with a gas supply pipe 12. The gas supply pipe 12 penetrates the device main body and is connected to a gas source.

[0032] The above are only the specific implementation manners of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model; without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A gas scrubbing device, comprising a device main body, a gas scrubbing cavity is formed inside the device main body, an air outlet pipe penetrating to the outside of the device main body is arranged above the gas scrubbing cavity, a spraying device is arranged below the air outlet pipe, an overflow pipe and a liquid-phase washing liquid inlet pipe are arranged below the gas scrubbing cavity, and a gas supply device is installed at the bottom of the gas scrubbing cavity; characterized in that: The spray device includes a main spray head in the middle and auxiliary spray heads arranged around the main spray head. The main spray head and the auxiliary spray heads are connected to the gas-phase washing liquid inlet pipe through pipelines.

2. The scrubbing device according to claim 1, characterized in that: The air supply device is a disc-shaped air supply and distribution disc. A plurality of air outlet holes are formed in the air supply and distribution disc. The air supply and distribution disc is connected to an air supply pipe, and the air supply pipe penetrates through the equipment main body and is connected to a gas source.

3. The scrubbing device according to claim 1, wherein: The overflow pipe and the liquid-phase washing liquid inlet pipe penetrate to the outside of the equipment main body and are connected to a washing liquid storage tank. Among them, the water level of the overflow pipe orifice inside the gas washing cavity is higher than that of the overflow pipe orifice in the washing liquid storage tank. The washing pool containing the washing liquid is formed at the lower part of the gas washing cavity through the overflow pipe and the liquid-phase washing liquid inlet pipe.

4. The scrubbing device according to claim 3, characterized in that: A wire mesh bracket is installed above the washing pool. A disc-shaped gas passing and distributing disc is placed on the upper part of the wire mesh bracket. A plurality of through holes for air flow to pass through are arranged on the gas passing and distributing disc.

5. The scrubbing device according to claim 1, characterized in that: A manhole communicating with the gas washing cavity is formed at the top of the equipment main body. An air outlet pipe penetrating to the outside of the equipment main body is arranged at the upper part of the gas washing cavity. The air outlet pipe is connected to the manhole, and a demisting wire mesh is installed below the manhole.

6. The scrubbing device according to claim 4, wherein: The liquid-phase washing liquid inlet pipe and the gas-phase washing liquid inlet pipe are connected through a pipeline. A first valve and a second valve are respectively connected to the liquid-phase washing liquid inlet pipe and the gas-phase washing liquid inlet pipe. The first valve and the second valve are connected to a liquid supply pump through pipelines, and the liquid supply pump is connected to the washing liquid storage tank through a pipeline.

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