Waste gas pretreatment device for CO catalytic combustion furnace

Abstract

The waste gas pretreatment device for the CO catalytic combustion furnace comprises a pretreatment box, a cavity is formed in the pretreatment box, a dust removal box is fixedly installed at the bottom of the cavity, a filter box is fixedly installed at the top of the dust removal box, and a water storage box is fixedly installed on the outer side of the dust removal box. A plurality of atomizing nozzles are fixedly mounted on the inner side wall of the dust removal box and extend into the water storage box, a directional guide pipe is arranged at the bottom of the filter box and extends downwards into the dust removal box, a sponge plate is fixedly mounted in the filter box, and a second filter screen, an activated carbon layer and a third filter screen are fixedly mounted above the sponge plate; by arranging the dust removal box and the filter box, organic waste gas is pretreated, dust particles in the organic waste gas are effectively removed, follow-up catalytic combustion of the organic waste gas is more sufficient, the problem that after catalytic combustion, solid particles are adsorbed in a catalytic combustion furnace and are difficult to clean is solved, and the service life of the catalytic combustion furnace is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of organic waste gas pretreatment, in particular to a waste gas pretreatment device for a CO catalytic combustion furnace. Background Art

[0002] With the continuous development of my country's economy, a large number of chemical companies have emerged. These companies emit a large amount of incompletely burned industrial organic waste gas every year, which has a serious impact on the atmospheric environment. At present, organic waste gas can be treated by catalytic combustion of CO.

[0003] Organic waste gas contains a large amount of dust particles. Currently, most companies filter organic waste gas after catalytic combustion. This can easily lead to incomplete catalytic combustion of organic waste gas, and the solid particles after catalytic combustion are adsorbed in the catalytic combustion furnace and are difficult to remove, resulting in a reduced service life of the combustion furnace. For this reason, we proposed a waste gas pretreatment device for CO catalytic combustion furnace. Utility Model Content

[0004] The purpose of the utility model is to provide an exhaust gas pretreatment device for a CO catalytic combustion furnace, which solves the problems of insufficient catalytic combustion of the above-mentioned organic exhaust gas and difficult removal of solid particles adsorbed in the catalytic combustion furnace.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste gas pretreatment device for a CO catalytic combustion furnace, comprising a pretreatment box, a cavity is provided inside the pretreatment box, a dust removal box is fixedly installed at the bottom of the cavity, a filter box is fixedly installed on the top of the dust removal box, a water storage tank is fixedly installed around the outer side of the dust removal box, a plurality of atomizing nozzles are fixedly installed on the position of the inner side wall of the dust removal box corresponding to the water storage tank, the input end of the atomizing nozzle extends through the side wall of the dust removal box into the water storage tank, the bottom of the dust removal box is fixedly installed with a fixed block along the four side walls of the dust removal box, and the dust removal box is fixed with a filter box. A first filter screen matching the fixed block is provided below the part, and the four sides of the first filter screen are fixedly connected to the corresponding fixed block on one side toward the center of the dust removal box, and a drain pipe is fixedly connected to the bottom of the dust removal box, and the drain pipe passes through the bottom of the pretreatment box and extends to the outside; a directional conduit is provided at the bottom of the filter box, and the directional conduit passes downward through the top of the dust removal box and extends into the dust removal box; a sponge board is fixedly installed in the middle position of the interior of the filter box, and a second filter screen is fixedly installed above the sponge board, an activated carbon layer is provided above the second filter screen, and a third filter screen is fixedly installed above the activated carbon layer.

[0006] By sending the organic waste gas into the dust removal box and spraying it through the atomizing nozzle, the dust particles in the organic waste gas can be adsorbed on the water and fall onto the first filter screen. The first filter screen can filter out the dust particles in the water, so that the filtered water can be discharged through the drain pipe and reused. The organic waste gas after dust removal in the dust removal box enters the filter box through the directional conduit. The sponge board is used to absorb moisture in the organic waste gas. The second filter screen, the activated carbon layer and the third filter screen are used to further filter the organic waste gas, thereby completely filtering the dust particles in the organic waste gas, making the subsequent catalytic combustion of the organic waste gas more complete, and avoiding the problem of solid particles after catalytic combustion being adsorbed in the catalytic combustion furnace and difficult to clean.

[0007] Preferably, an air intake pipe is fixedly connected to the upper side of the pretreatment box. A pipe thread is installed on the inner side of the air intake pipe. The air intake pipe is fixedly connected to an air guide pipe via the pipe thread. The end of the air guide pipe away from the air intake pipe passes through the dust removal box and extends into the interior of the dust removal box. The lower end of the air guide pipe extends to the bottom of the dust removal box to ensure that the organic waste gas and the water sprayed by the atomizing nozzle are fully mixed.

[0008] Preferably, the top of the fixing block is provided with an inclined surface which slopes from the side wall of the dust removal box to the bottom. The fixing block is inclined from the outside to the inside, so as to facilitate the water sprayed from the atomizing nozzle to flow to the bottom of the first filter screen.

[0009] Preferably, a valve is fixedly mounted on the drain pipe, and the valve can be used to control the opening and closing of the drain pipe.

[0010] Preferably, a mounting bracket is fixedly installed in the directional duct, and an exhaust fan is installed on the mounting clamp. The exhaust fan can quickly flow the organic waste gas near the top of the dust removal box into the filter box to improve the filtering efficiency.

[0011] Preferably, a water inlet pipe is fixedly connected to the side wall of the water storage tank away from the dust removal box, and one end of the water inlet pipe away from the water storage tank passes through the pretreatment box and extends to the outside. The end of the water inlet pipe extending to the outside of the pretreatment box is connected to the external water pipe to allow water to flow into the water storage tank.

[0012] Preferably, an exhaust pipe is fixedly connected to the top of the filter box, and the end of the exhaust pipe, which is remote from the filter box, passes through the pretreatment box and extends to the outside. The end of the exhaust pipe extending outside the pretreatment box is connected to the catalytic combustion furnace, so that the filtered organic waste gas can enter the catalytic combustion furnace for catalytic combustion.

[0013] Compared with the prior art, the above technical solution adopted by the present invention has the following technical effects:

[0014] The utility model provides a pretreatment box, a dust removal box and a filter box in the pretreatment box, introduces the organic waste gas into the dust removal box and uses an atomizing nozzle to spray, so that the water sprayed by the atomizing nozzle adsorbs the dust particles in the waste gas and falls on the first filter screen, thereby reducing the dust particles in the gas, and then the organic waste gas after the preliminary filtration is pumped into the filter box through the directional duct and the exhaust fan at the bottom of the filter box, and is further filtered through the sponge plate, the second filter screen, the activated carbon layer and the third filter screen, thereby effectively removing the dust particles in the organic waste gas, making the subsequent catalytic combustion of the organic waste gas more complete, avoiding the problem that the solid particles after catalytic combustion are adsorbed in the catalytic combustion furnace and are difficult to clean, and extending the service life of the catalytic combustion furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional schematic diagram of the present utility model;

[0016] Figure 2 It is a three-dimensional structural diagram of the dust removal box, filter box and water storage tank of the utility model.

[0017] Explanation of the accompanying symbols: 1. Pretreatment box; 2. Cavity; 3. Dust removal box; 4. Filter box; 5. Water storage tank; 6. Atomizing nozzle; 7. Fixed block; 8. First filter screen; 9. Drain pipe; 10. Directional guide tube; 11. Sponge board; 12. Second filter screen; 13. Activated carbon layer; 14. Third filter screen; 15. Air inlet pipe; 16. Pipe thread; 17. Air guide pipe; 18. Valve; 19. Exhaust fan; 20. Water inlet pipe; 21. Exhaust pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0020] See also Figure 1-2The utility model provides a technical solution: it includes a pretreatment box 1, a cavity 2 is provided inside the pretreatment box 1, a dust removal box 3 is fixedly installed at the bottom of the cavity 2, a filter box 4 is fixedly installed on the top of the dust removal box 3, a water storage tank 5 is fixedly installed around the outside of the dust removal box 3, and a plurality of atomizing nozzles 6 are fixedly installed on the position of the inner side wall of the dust removal box 3 corresponding to the water storage tank 5. The input end of the atomizing nozzle 6 extends through the side wall of the dust removal box 3 into the water storage tank 5, and a fixed block 7 is fixedly installed on the bottom of the dust removal box 3 along the side walls of the dust removal box 3. A first filter 7 matching the fixed block 7 is provided at the bottom of the dust removal box 3. Filter screen 8, the four sides of the first filter screen 8 are respectively fixedly connected to the corresponding fixed block 7 on one side toward the center of the dust removal box 3, the bottom of the dust removal box 3 is fixedly connected with a drain pipe 9, the drain pipe 9 passes through the bottom of the pretreatment box 1 and extends to the outside, a directional conduit 10 is provided at the bottom of the filter box 4, the directional conduit 10 passes downward through the top of the dust removal box 3 and extends into the dust removal box 3, a sponge board 11 is fixedly installed in the middle position of the interior of the filter box 4, a second filter screen 12 is fixedly installed above the sponge board 11, an activated carbon layer 13 is provided above the second filter screen 12, and a third filter screen 14 is fixedly installed above the activated carbon layer 13.

[0021] An air intake pipe 15 is fixedly connected to the upper side of the pretreatment box 1, and a pipe thread 16 is installed on the inner side of the air intake pipe 15. The air intake pipe 15 is fixedly connected to an air guide pipe 17 through the pipe thread 16. The end of the air guide pipe 17 away from the air intake pipe 15 passes through the dust removal box 3 and extends to the interior of the dust removal box 3.

[0022] The top of the fixing block 7 is provided with an inclined surface which is inclined from the side wall of the dust removal box 3 to the bottom.

[0023] A valve 18 is fixedly installed on the drain pipe 9.

[0024] A mounting frame is fixedly installed in the directional duct 10 , and an exhaust fan 19 is installed on the mounting frame.

[0025] A water inlet pipe 20 is fixedly connected to the side wall of the water storage tank 5 away from the dust removal box 3. One end of the water inlet pipe 20 away from the water storage tank 5 passes through the pretreatment box 1 and extends to the outside.

[0026] An exhaust pipe 21 is fixedly connected to the top of the filter box 4 , and one end of the exhaust pipe away from the filter box 4 passes through the pretreatment box 1 and extends to the outside.

[0027] Working principle or structural principle: First, the organic waste gas is sent to the dust removal box 3 through the air inlet pipe 15 and the air guide pipe 17, and at the same time, the atomizing nozzle 6 is started to spray the water in the water storage tank 5. The organic waste gas and the water mist are fully mixed, so that the dust particles in the organic waste gas will fall on the first filter 8 with the water body, and the water body flows into the drain pipe 9 below through the first filter 8. The organic waste gas after dust removal is pumped into the filter box 4 through the directional duct 10 and the exhaust fan 19, and then the moisture in the organic waste gas is absorbed by the sponge board 11, and then further filtered through the second filter 12, the activated carbon layer 13 and the third filter 14, and finally flows into the catalytic combustion furnace through the exhaust pipe 21 for catalytic combustion. When the water in the dust removal box 3 accumulates to a certain amount, the valve 18 is opened to collect and reuse it. This device effectively removes the dust particles in the organic waste gas, makes the subsequent catalytic combustion of the organic waste gas more complete, and avoids the problem of solid particles being adsorbed in the catalytic combustion furnace after catalytic combustion and difficult to clean.

[0028] The embodiments of the present invention have been described in detail with reference to the accompanying drawings. It should be noted that any implementations not depicted or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods described in the embodiments; those skilled in the art may easily modify or replace them.

[0029] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be employed, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be employed without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

[0030] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A waste gas pretreatment device for a CO catalytic combustion furnace, comprising a pretreatment box (1), characterized in that: The pretreatment box (1) is provided with a cavity (2) inside, a dust removal box (3) is fixedly installed at the bottom of the cavity (2), a filter box (4) is fixedly installed at the top of the dust removal box (3), a water storage tank (5) is fixedly installed around the outer side of the dust removal box (3), a plurality of atomizing nozzles (6) are fixedly installed at positions of the inner side wall of the dust removal box (3) corresponding to the water storage tank (5), the input end of the atomizing nozzle (6) passes through the side wall of the dust removal box (3) and extends into the water storage tank (5), a fixed block (7) is fixedly installed at the bottom of the dust removal box (3) along the surrounding side walls of the dust removal box (3), a first filter screen (8) matching the fixed block (7) is provided at the lower part of the dust removal box (3), and the first filter screen ( The four sides of the pretreatment box (8) are respectively fixedly connected to the corresponding fixed blocks (7) on one side facing the center of the dust removal box (3); the bottom of the dust removal box (3) is fixedly connected with a drain pipe (9); the drain pipe (9) passes through the bottom of the pretreatment box (1) and extends to the outside; the bottom of the filter box (4) is provided with a directional conduit (10); the directional conduit (10) passes downward through the top of the dust removal box (3) and extends into the dust removal box (3); a sponge board (11) is fixedly installed at the middle position inside the filter box (4); a second filter screen (12) is fixedly installed above the sponge board (11); an activated carbon layer (13) is provided above the second filter screen (12); and a third filter screen (14) is fixedly installed above the activated carbon layer (13).

2. The exhaust gas pretreatment device for a CO catalytic combustion furnace according to claim 1 is characterized in that: An air intake pipe (15) is fixedly connected to the upper side of the pretreatment box (1), a pipe thread (16) is installed on the inner side of the air intake pipe (15), and the air intake pipe (15) is fixedly connected to an air guide pipe (17) through the pipe thread (16), and one end of the air guide pipe (17) away from the air intake pipe (15) passes through the dust removal box (3) and extends to the interior of the dust removal box (3).

3. The exhaust gas pretreatment device for a CO catalytic combustion furnace according to claim 1 is characterized in that: The top of the fixing block (7) is provided with an inclined surface which is inclined from the side wall of the dust removal box (3) toward the bottom.

4. The exhaust gas pretreatment device for a CO catalytic combustion furnace according to claim 1 is characterized in that: A valve (18) is fixedly mounted on the drainage pipe (9).

5. The exhaust gas pretreatment device for a CO catalytic combustion furnace according to claim 1 is characterized in that: A mounting frame is fixedly installed inside the directional duct (10), and an exhaust fan (19) is installed on the mounting clamp.

6. The exhaust gas pretreatment device for a CO catalytic combustion furnace according to claim 1 is characterized in that: A water inlet pipe (20) is fixedly connected to the side wall of the water storage tank (5) away from the dust removal box (3), and one end of the water inlet pipe (20) away from the water storage tank (5) passes through the pretreatment box (1) and extends to the outside.

7. The exhaust gas pretreatment device for a CO catalytic combustion furnace according to claim 1 is characterized in that: An exhaust pipe (21) is fixedly connected to the top of the filter box (4), and one end of the exhaust pipe away from the filter box (4) passes through the pretreatment box (1) and extends to the outside.

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