Waste gas emission pretreatment device

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a waste gas emission pretreatment device which is characterized by comprising a dust intercepting box and a waste gas washing box, an air inlet and an air outlet are formed in the bottom and the top of the dust intercepting box in a penetrating mode respectively, a plurality of layers of intercepting sieve plates are arranged in the dust intercepting box, the mesh diameters of the intercepting sieve plates are sequentially reduced from bottom to top, and a dust discharging opening is further formed in the bottom of the dust intercepting box and provided with a sealed dust discharging door; a gas inlet and a gas outlet are respectively formed in the middle and the top of a bottom plate of the waste gas washing box in a penetrating manner; a gas conveying pipeline is arranged between the gas inlet of the waste gas washing box and the gas outlet of the dust intercepting box; a liquid inlet with a valve and a liquid outlet with a valve are further formed in the top and the bottom of the waste gas washing box respectively, a plurality of groups of gas baffles and gas dispersion plates which are arranged at intervals from bottom to top are arranged in the waste gas washing box, and the edge of the upper plate body between every two adjacent plate bodies exceeds the edge of the lower plate body.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and more specifically, to a waste gas discharge pre-treatment device. Background Art

[0002] Industrial production and manufacturing often generate the problem of waste discharge, especially various waste gases, which contain a large amount of suspended particles such as smoke and dust, as well as a large amount of toxic gas substances. If they are not only harmlessly treated but directly discharged, it will cause great pollution to the environment around the factory, which is also not allowed by the environmental protection department. At present, most of the existing waste gas emission pre-treatment links are to intercept the suspended particles in the gas through physical screening devices after the waste gas is generated, and then pass the gas with intercepted dust and other particles into the gas with a good ratio of treated water to react and treat the toxic substances in the gas before finally discharging it. However, in general, in the process of washing the waste gas, due to the large amount of gas and limited liquid, the contact time is short, and there is no time for full reaction, resulting in the final emission gas still containing toxic substances. Therefore, it is necessary to continuously optimize and upgrade such treatment devices so that the final emission gas can be cleaner and harmless. Utility Model Content

[0003] The purpose of the utility model is to provide a waste gas pre-treatment device, which uses multiple groups of gas baffles and gas dispersion plates to repeatedly block and disperse the airflow, thereby extending the time the gas stays in the treatment liquid, extending the gas travel path, and increasing the contact area between the gas and the treatment liquid, so that the gas can fully contact and react with the treatment liquid, allowing the toxic substances in the gas to be fully reacted and reduced, thereby greatly improving the safety of the exhaust gas.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: an exhaust gas pre-treatment device, characterized in that it includes a dust interception box and an exhaust gas washing box;

[0005] The bottom and top of the dust interception box are respectively provided with an air inlet and an exhaust port, and the interior of the dust interception box is provided with several layers of interception sieve plates, and the mesh apertures of the interception sieve plates decrease from bottom to top. The bottom of the dust interception box is also provided with a dust exhaust port, and the dust exhaust port is equipped with a sealed dust exhaust door;

[0006] An air inlet and an air outlet are respectively provided through the middle and top of the bottom plate of the exhaust gas washing box, and a gas transport pipeline is provided between the air inlet of the exhaust gas washing box and the exhaust port of the dust interception box; a liquid inlet and a liquid outlet with valves are also respectively provided on the top and bottom of the exhaust gas washing box, and a plurality of groups of gas baffles and gas dispersion plates are arranged at intervals from bottom to top inside the exhaust gas washing box, and the edge of the upper plate between adjacent plate bodies exceeds the edge of the lower plate body.

[0007] As a preferred technical solution of the utility model, the gas baffle is an upwardly convex arc plate, the gas dispersion plate is an upwardly convex conical plate, and a plurality of dispersion air holes are arranged through the gas dispersion plate.

[0008] As a preferred technical solution of the utility model, a plurality of connecting columns are fixedly arranged between the gas baffle or gas dispersion plate located at the bottom and the bottom plate of the exhaust gas washing box, and between adjacent gas baffles and gas dispersion plates.

[0009] As a preferred technical solution of the utility model, the air inlet of the exhaust gas washing box is internally connected with a decentralized air supply pipe, and the decentralized air supply pipe includes a vertical main pipe, a transverse connecting pipe and a plurality of longitudinal branch pipes. The bottom end of the vertical main pipe is fixedly connected to the air inlet of the exhaust gas washing box, the top end of the vertical main pipe is fixedly connected to the middle part of the transverse connecting pipe, a plurality of air distribution holes are provided on the top of the transverse connecting pipe, and the bottom end of the longitudinal branch pipe is fixedly connected to the transverse connecting pipe at a position corresponding to the air distribution holes.

[0010] As a preferred technical solution of the utility model, the intercepting screen plate is an inverted conical mesh plate.

[0011] As a preferred technical solution of the utility model, a vibration motor is connected between the edge of the interception screen plate and the inner wall of the dust interception box, and the vibration motor is used to drive the interception screen plate to vibrate at a high frequency.

[0012] As a preferred technical solution of the present invention, a dust receiving box is provided above the bottom plate of the dust interception box, and the dust receiving box can be arranged inside or outside the dust interception box through the dust exhaust port.

[0013] As a preferred technical solution of the utility model, a high temperature resistant sealing strip is provided at the edge of the sealed dust exhaust door connected to the dust exhaust port, and a handle is provided on the outside of the sealed dust exhaust door.

[0014] To sum up, the utility model has the following beneficial effects: when the exhaust gas emission treatment is actually to be carried out, the exhaust gas is passed from the air inlet to the bottom of the dust interception box. Since the exhaust gas just generated mostly has a higher temperature, the gas itself has an upward characteristic at this time. At the same time, under the intervention of the gas flow direction, the exhaust gas will pass through the interception screen plate layer by layer. In the process of the exhaust gas passing through the interception screen plate, the dust in the exhaust gas can be filtered and intercepted in order from large to small according to the volume through the mesh aperture that becomes smaller layer by layer. The intercepted dust can pass through the mesh holes of the lower interception screen plate under the action of gravity and fall into the bottom of the dust interception box, which is convenient for centralized dust discharge and subsequent washing treatment.

[0015] The solid particles in the waste gas after dust screening are greatly reduced, and the dust-removed gas is then introduced into a waste gas washing box with a treatment liquid. The gas enters from the middle of the bottom of the waste gas washing box. When the gas enters, it naturally rises and reaches the bottom of the gas baffle, where its path is blocked, so that the gas slides to the edge of the gas baffle before continuing to rise to the gas dispersion plate. Under the action of the gas dispersion plate, the concentrated gas is further blocked and dispersed. Through multiple groups of gas baffles and gas dispersion plates, the airflow is repeatedly blocked and dispersed, which can extend the time the gas stays in the treatment liquid, extend the gas travel path, and increase the contact area between the gas and the treatment liquid, so that the gas can fully contact and react with the treatment liquid, so that the toxic substances in the gas can be fully reacted and reduced, thereby greatly improving the safety of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure: 1. Dust interception box; 2. Exhaust gas washing box; 3. Interception screen plate; 4. Sealed dust exhaust door; 5. Gas transportation pipeline; 6. Liquid inlet; 7. Liquid outlet; 8. Gas baffle; 9. Gas dispersion plate; 10. Dispersion air holes; 11. Connecting column; 12. Vertical main pipe; 13. Horizontal connecting pipe; 14. Longitudinal branch pipe; 15. Vibration motor; 16. Dust collecting box; 17. Handle. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] like Figure 1 As shown, the utility model provides an exhaust gas pre-treatment device, including a dust interception box 1 and an exhaust gas washing box 2;

[0020] The bottom and top of the dust interception box 1 are respectively provided with an air inlet and an exhaust port, and the interior of the dust interception box 1 is provided with a plurality of layers of interception sieve plates 3, and the mesh apertures of the interception sieve plates 3 decrease from bottom to top. The bottom of the dust interception box 1 is also provided with a dust exhaust port, and the dust exhaust port is provided with a sealed dust exhaust door 4;

[0021] An air inlet and an air outlet are respectively provided through the middle and top of the bottom plate of the exhaust gas washing box 2, and a gas transport pipeline 5 is provided between the air inlet of the exhaust gas washing box 2 and the exhaust port of the dust interception box 1; a liquid inlet 6 and a liquid outlet 7 with valves are also provided on the top and bottom of the exhaust gas washing box 2, respectively, and a plurality of groups of gas baffles 8 and gas dispersion plates 9 are provided inside the exhaust gas washing box 2 at intervals from bottom to top, and the edge of the upper plate between adjacent plates exceeds the edge of the lower plate.

[0022] The working principle, use process and technical advantages of the waste gas emission pretreatment device of the present invention are as follows: when the waste gas emission treatment is actually to be carried out, the waste gas is passed from the air inlet to the bottom of the dust interception box 1. Since the waste gas just generated mostly has a higher temperature, the gas itself has an upward characteristic at this time. At the same time, under the intervention of the gas flow direction, the waste gas will pass through the interception screen plate 3 layer by layer. In the process of the waste gas passing through the interception screen plate 3, the dust in the waste gas can be filtered and intercepted in order from large to small according to the volume through the mesh aperture that becomes smaller layer by layer. This interception method is more efficient and has a better interception effect. The intercepted dust can pass through the mesh holes of the low interception screen plate 3 under the action of gravity and fall into the bottom of the dust interception box 1, which is convenient for centralized dust discharge and subsequent washing treatment.

[0023] The solid particles in the waste gas after dust screening are greatly reduced, and the dust-removed gas is then introduced into the waste gas washing box 2 with the treatment liquid, and the gas enters from the middle of the bottom of the waste gas washing box 2. When the gas enters, it naturally rises and reaches the bottom of the gas baffle 8, where its path is blocked, so that the gas slides to the edge of the gas baffle 8 before continuing to rise to the gas dispersion plate 9. Under the action of the gas dispersion plate 9, the concentrated gas is further blocked and dispersed, and multiple groups of gas baffles 8 and gas dispersion plates 9 are used to repeatedly block and disperse the airflow, which can extend the time the gas stays in the treatment liquid, extend the gas travel path, and increase the contact area between the gas and the treatment liquid, so that the gas can fully contact and react with the treatment liquid, so that the toxic substances in the gas can be fully reacted and reduced, thereby greatly improving the safety of the exhaust gas.

[0024] As an embodiment of the utility model, the gas baffle 8 is an upwardly convex arc plate, the gas dispersion plate 9 is an upwardly convex conical plate, and a plurality of dispersion air holes 10 are provided through the gas dispersion plate 9, which can retain more gas, so that the gas is in a high-pressure state and can react better with the treatment liquid. A plurality of connecting columns 11 are fixedly provided between the gas baffle 8 or gas dispersion plate 9 at the bottom and the bottom plate of the exhaust gas washing box 2, and between adjacent gas baffles 8 and gas dispersion plates 9, for fixing the gas baffle 8 and gas dispersion plate 9.

[0025] Furthermore, the air inlet of the exhaust gas washing box 2 is internally connected with a dispersed air supply pipe, which includes a vertical main pipe 12, a transverse connecting pipe 13 and a plurality of longitudinal branch pipes 14. The bottom end of the vertical main pipe 12 is fixedly connected to the air inlet of the exhaust gas washing box 2, the top end of the vertical main pipe 12 is fixedly connected to the middle part of the transverse connecting pipe 13, a plurality of air distribution holes are arranged on the top of the transverse connecting pipe 13, and the bottom end of the longitudinal branch pipe 14 is fixedly connected to the transverse connecting pipe 13 at a position corresponding to the air distribution holes, so that the gas can be dispersed when it passes into the exhaust gas washing box 2, so as to facilitate the reaction between the gas and the treatment liquid.

[0026] As an embodiment of the present utility model, the interception screen plate 3 is an inverted conical mesh plate, which is convenient for dust to fall. A vibration motor 15 is connected between the edge of the interception screen plate 3 and the inner wall of the dust interception box 1. The vibration motor 15 is used to drive the interception screen plate 3 to vibrate at a high frequency, which can minimize the adhesion of dust to the interception screen plate 3. A dust collecting box 16 is arranged above the bottom plate of the dust interception box 1. The dust collecting box 16 can be arranged inside or outside the dust interception box 1 through the dust discharge port, which can facilitate the overall transfer of the collected dust out of the dust interception box 1. A high-temperature resistant sealing strip is arranged on the edge of the sealed dust discharge door 4 connected to the dust discharge port, and a handle 17 is arranged on the outside of the sealed dust discharge door 4 to facilitate the opening of the sealed dust discharge door 4. The utility model provides an exhaust gas emission pre-treatment device, including a dust interception box 1 and an exhaust gas washing box 2;

[0027] The bottom and top of the dust interception box 1 are respectively provided with an air inlet and an exhaust port, and the interior of the dust interception box 1 is provided with a plurality of layers of interception sieve plates 3, and the mesh apertures of the interception sieve plates 3 decrease from bottom to top. The bottom of the dust interception box 1 is also provided with a dust exhaust port, and the dust exhaust port is provided with a sealed dust exhaust door 4;

[0028] An air inlet and an air outlet are respectively provided through the middle and top of the bottom plate of the exhaust gas washing box 2, and a gas transport pipeline 5 is provided between the air inlet of the exhaust gas washing box 2 and the exhaust port of the dust interception box 1; a liquid inlet 6 and a liquid outlet 7 with valves are also provided on the top and bottom of the exhaust gas washing box 2, respectively, and a plurality of groups of gas baffles 8 and gas dispersion plates 9 are provided inside the exhaust gas washing box 2 at intervals from bottom to top, and the edge of the upper plate between adjacent plates exceeds the edge of the lower plate.

[0029] The working principle, use process and technical advantages of the waste gas emission pretreatment device of the present invention are as follows: when the waste gas emission treatment is actually to be carried out, the waste gas is passed from the air inlet to the bottom of the dust interception box 1. Since the waste gas just generated mostly has a higher temperature, the gas itself has an upward characteristic at this time. At the same time, under the intervention of the gas flow direction, the waste gas will pass through the interception screen plate 3 layer by layer. In the process of the waste gas passing through the interception screen plate 3, the dust in the waste gas can be filtered and intercepted in order from large to small according to the volume through the mesh aperture that becomes smaller layer by layer. This interception method is more efficient and has a better interception effect. The intercepted dust can pass through the mesh holes of the low interception screen plate 3 under the action of gravity and fall into the bottom of the dust interception box 1, which is convenient for centralized dust discharge and subsequent washing treatment.

[0030] The solid particles in the waste gas after dust screening are greatly reduced, and the dust-removed gas is then introduced into the waste gas washing box 2 with the treatment liquid, and the gas enters from the middle of the bottom of the waste gas washing box 2. When the gas enters, it naturally rises and reaches the bottom of the gas baffle 8, where its path is blocked, so that the gas slides to the edge of the gas baffle 8 before continuing to rise to the gas dispersion plate 9. Under the action of the gas dispersion plate 9, the concentrated gas is further blocked and dispersed, and multiple groups of gas baffles 8 and gas dispersion plates 9 are used to repeatedly block and disperse the airflow, which can extend the time the gas stays in the treatment liquid, extend the gas travel path, and increase the contact area between the gas and the treatment liquid, so that the gas can fully contact and react with the treatment liquid, so that the toxic substances in the gas can be fully reacted and reduced, thereby greatly improving the safety of the exhaust gas.

[0031] As an embodiment of the utility model, the gas baffle 8 is an upwardly convex arc plate, the gas dispersion plate 9 is an upwardly convex conical plate, and a plurality of dispersion air holes 10 are provided through the gas dispersion plate 9, which can retain more gas, so that the gas is in a high-pressure state and can react better with the treatment liquid. A plurality of connecting columns 11 are fixedly provided between the gas baffle 8 or gas dispersion plate 9 at the bottom and the bottom plate of the exhaust gas washing box 2, and between adjacent gas baffles 8 and gas dispersion plates 9, for fixing the gas baffle 8 and gas dispersion plate 9.

[0032] Furthermore, the air inlet of the exhaust gas washing box 2 is internally connected with a dispersed air supply pipe, which includes a vertical main pipe 12, a transverse connecting pipe 13 and a plurality of longitudinal branch pipes 14. The bottom end of the vertical main pipe 12 is fixedly connected to the air inlet of the exhaust gas washing box 2, the top end of the vertical main pipe 12 is fixedly connected to the middle part of the transverse connecting pipe 13, a plurality of air distribution holes are arranged on the top of the transverse connecting pipe 13, and the bottom end of the longitudinal branch pipe 14 is fixedly connected to the transverse connecting pipe 13 at a position corresponding to the air distribution holes, so that the gas can be dispersed when it passes into the exhaust gas washing box 2, so as to facilitate the reaction between the gas and the treatment liquid.

[0033] As an embodiment of the utility model, the interception screen plate 3 is an inverted conical mesh plate, which is convenient for dust to fall. A vibration motor 15 is connected between the edge of the interception screen plate 3 and the inner wall of the dust interception box 1. The vibration motor 15 is used to drive the interception screen plate 3 to vibrate at a high frequency, which can minimize the adhesion of dust to the interception screen plate 3. A dust collecting box 16 is arranged above the bottom plate of the dust interception box 1. The dust collecting box 16 can be arranged inside or outside the dust interception box 1 through the dust discharge port, which can facilitate the overall transfer of the collected dust out of the dust interception box 1. A high-temperature resistant sealing strip is arranged on the edge of the dust discharge port of the sealed dust discharge door 4, and a handle 17 is arranged on the outside of the sealed dust discharge door 4 to facilitate the opening of the sealed dust discharge door 4.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust gas pre-treatment device, characterized in that: It comprises a dust interception box (1) and an exhaust gas washing box (2); The bottom and top of the dust interception box (1) are respectively provided with an air inlet and an air outlet, and the interior of the dust interception box (1) is provided with a plurality of layers of interception sieve plates (3), the mesh apertures of the interception sieve plates (3) decrease from bottom to top, and the bottom of the dust interception box (1) is also provided with a dust exhaust port, and the dust exhaust port is equipped with a sealed dust exhaust door (4); An air inlet and an air outlet are respectively provided through the middle and top of the bottom plate of the waste gas washing box (2), and a gas transport pipeline (5) is provided between the air inlet of the waste gas washing box (2) and the exhaust port of the dust interception box (1); a liquid inlet (6) and a liquid outlet (7) with valves are also provided at the top and bottom of the waste gas washing box (2), respectively, and a plurality of groups of gas baffles (8) and gas dispersion plates (9) are provided inside the waste gas washing box (2) and are arranged at intervals from bottom to top, and the upper edge of the plate between adjacent plate bodies exceeds the lower edge of the plate body.

2. The exhaust gas pre-treatment device according to claim 1, characterized in that: The gas baffle (8) is an upwardly convex arc plate, the gas dispersion plate (9) is an upwardly convex conical plate, and a plurality of dispersion air holes (10) are arranged through the gas dispersion plate (9).

3. The exhaust gas pre-treatment device according to claim 2 is characterized in that: A plurality of connection columns (11) are fixedly arranged between the gas baffle (8) or the gas dispersion plate (9) located at the bottom and the bottom plate of the exhaust gas washing box (2), and between adjacent gas baffles (8) and gas dispersion plates (9).

4. The exhaust gas pre-treatment device according to claim 3 is characterized in that: The air inlet of the exhaust gas washing box (2) is internally connected to a dispersed air supply pipe, and the dispersed air supply pipe includes a vertical main pipe (12), a transverse connecting pipe (13) and a plurality of longitudinal branch pipes (14). The bottom end of the vertical main pipe (12) is fixedly connected to the air inlet of the exhaust gas washing box (2), the top end of the vertical main pipe (12) is fixedly connected to the middle of the transverse connecting pipe (13), the top of the transverse connecting pipe (13) is provided with a plurality of air distribution holes, and the bottom end of the longitudinal branch pipe (14) is fixedly connected to the transverse connecting pipe (13) at a position corresponding to the air distribution hole.

5. The exhaust gas pre-treatment device according to claim 4 is characterized in that: The intercepting screen plate (3) is an inverted conical screen plate.

6. The exhaust gas pre-treatment device according to claim 5 is characterized in that: A vibration motor (15) is connected between the edge of the interception screen plate (3) and the inner wall of the dust interception box (1), and the vibration motor (15) is used to drive the interception screen plate (3) to vibrate at a high frequency.

7. The exhaust gas pre-treatment device according to claim 6 is characterized in that: A dust receiving box (16) is arranged above the bottom plate of the dust interception box (1), and the dust receiving box (16) can be arranged inside or outside the dust interception box (1) through the dust exhaust port.

8. The exhaust gas pre-treatment device according to claim 7, characterized in that: A high temperature resistant sealing strip is provided at the edge of the sealed dust exhaust door (4) connected to the dust exhaust port, and a handle (17) is provided on the outside of the sealed dust exhaust door (4).

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