Sulfur dioxide purification device for sludge pyrolysis gasification

Abstract

The utility model provides a sulfur dioxide purification device for sludge pyrolysis gasification, and relates to the technical field of sulfur dioxide purification, the sulfur dioxide purification device comprises a purification box and a spray tower, the outer surface of one side of the purification box is fixedly connected with a fixing frame, and the outer surface of the fixing frame is fixedly connected with a motor. According to the waste gas purification device disclosed by the utility model, during waste gas purification, waste gas firstly enters the spray tower to be sprayed and purified, the top of the spray tower is communicated with the communicating block through the first pipe body and the second pipe body, and the sprayed and escaped gas is introduced into the communicating block to be discharged from bottom to top; the motor can be controlled by an external controller to drive the two stirring frames to rotate oppositely, rising gas can be stirred to form fine bubbles, residual sulfur dioxide in the gas can make full contact with purification liquid and react with the purification liquid, the automation degree is high, the purification effect is good, waste gas keeps a high flowing speed in the purification process, and the purification effect is good. The purification efficiency of the waste gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sulfur dioxide purification technology, especially to a sulfur dioxide purification device for sludge pyrolysis gasification. BACKGROUND

[0002] Biological sludge is a kind of sludge produced in the process of sewage treatment. The sludge mainly contains primary sludge, secondary sludge and chemical sludge. The secondary sludge is mainly the residual activated sludge, also known as biological sludge, mainly composed of organic matter, usually with high water content, very easy to rot and stink, and is one of the main objects of sludge treatment. The dewatering pyrolysis gasification device is a kind of efficient and environmentally friendly equipment, which uses high-temperature pyrolysis technology to treat biological sludge. The main working principle of this device is to heat and evaporate the water in the biological sludge, reduce the water content to a certain extent, and then perform pyrolysis reaction at high temperature to convert the biological sludge into gas and solid residue. By using dewatering, pyrolysis and gasification technologies, the organic matter in the biological sludge is converted into combustible gas and solid residue, achieving efficient and environmentally friendly treatment.

[0003] In the prior art, such as Chinese patent CN217410280U, a high-efficiency sulfur dioxide gas purification device for brick kiln, which comprises a tower body, a partition plate is fixedly arranged inside the tower body and divides the tower body into a filtering cavity and a spraying cavity, a group of baffle plates are fixedly connected to the two opposite cavity walls of the filtering cavity, the filtering cavity is filled with filtering filler, an air inlet pipe is fixedly connected to the lower side of the cavity wall of the filtering cavity, a connecting pipe is fixedly connected to the cavity walls of the filtering cavity and the spraying cavity, a group of filter cloths are fixedly arranged inside the spraying cavity above the connecting pipe, and a spraying mechanism is arranged inside the filtering cavity above the group of filter cloths. The present application has the advantages of double filtration, comprehensive filtration, complete filtration, good purification effect, high efficiency, avoidance of high temperature of waste gas discharge, and reduction of heat energy waste.

[0004] In the above-mentioned patent, in order to prevent part of the waste gas from escaping during spraying, multiple layers of filter cloths are arranged equidistantly in the spraying tower to slow down the rising speed of the waste gas, so that the sulfur dioxide in the waste gas can fully contact with the spraying liquid, ensuring that the waste gas can fully react with the spraying liquid when passing through the spraying tower, and avoiding pollution of the environment by part of the waste gas escaping. However, due to the existence of multiple layers of filter cloths, the flow speed of the waste gas in the spraying tower will inevitably slow down, which limits the intake amount to some extent, thereby affecting the overall purification efficiency. SUMMARY

[0005] The utility model discloses a kind of sulfur dioxide purification devices for sludge pyrolysis gasification, comprising purification box and spray tower, the one side outer surface of the purification box is fixedly connected with fixed frame, the outer surface of the fixed frame is fixedly connected with motor, inside the purification box is symmetrically arranged stirring frame, the outer surface of two stirring frames is fixedly connected with gear near one end position, and the inner bottom of the purification box is provided with air injection assembly.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a kind of sulfur dioxide purification devices for sludge pyrolysis gasification, including purification box and spray tower, the one side outer surface of the purification box is fixedly connected with fixed frame, the outer surface of the fixed frame is fixedly connected with motor, inside the purification box is symmetrically arranged stirring frame, the outer surface of two stirring frames is fixedly connected with gear near one end position, and the inner bottom of the purification box is provided with air injection assembly.

[0007] Preferably, the stirring frame rotates through the outer surfaces of both sides of the purification box, and the one end of the stirring frame extends outward.

[0008] Preferably, the output end of the motor rotates through the outer surface of the fixed frame, and the output end of the motor is fixedly connected with the end surface of one of the stirring frames.

[0009] Preferably, the two gears are located on the outer side of the purification box, and the outer surfaces of the two gears are meshingly rotatably connected.

[0010] Preferably, the top of the spray pipe is uniformly provided with a plurality of through holes, and the one-way valve is communicatively arranged with the spray pipe.

[0011] Preferably, the inner bottom of the purification box is fixedly connected with a cover body, the outer surfaces of both sides of the cover body are attached to the inner surfaces of the purification box, a plurality of exhaust holes are equally provided at the top of the cover body, and side holes are equally provided at the outer surfaces of both sides of the cover body.

[0012] Preferably, the top of the spray tower is fixedly connected with a first pipe body, and the bottom of the first pipe body is fixedly connected with the top of the second pipe body.

[0013] Preferably, the other side outer surface of the purification box is fixedly connected with a liquid inlet pipe near the top, and the other side outer surface of the purification box is fixedly connected with a liquid outlet pipe near the bottom.

[0014] Compared with the prior art, the utility model has the advantages and positive effects that,

[0015] 1. In the utility model, when waste gas is purified, waste gas is first sprayed and purified in the spray tower, the top of the spray tower is communicated with the communication block through the first pipe body and the second pipe body, the gas after spraying and escaping is introduced into the communication block and discharged from bottom to top, when the gas sensor senses gas flow, the motor is controlled by the external controller to drive the two stirring frames to rotate towards each other, the gas in the rising process is stirred, the residual sulfur dioxide in the gas is formed into small bubbles, the residual sulfur dioxide in the gas is fully contacted with the purification liquid and reacts, the degree of automation is high, the purification effect is good, the waste gas keeps a fast flow speed in the purification process, and the purification efficiency of the waste gas is improved.

[0016] 2. In the utility model, when in use, the cover body is arranged in the purification box, the gas discharged from the communication block is gathered by the cover body in the form of reverse buckling, the gas is stirred by the two stirring frames on the inner side of the cover body, is discharged from the plurality of exhaust holes after fully contacting and reacting with the purification liquid, and the purification effect of sulfur dioxide in the waste gas is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional view of the sulfur dioxide purification device for sludge pyrolysis gasification is provided for the utility model;

[0018] Figure 2 A top view of the sulfur dioxide purification device for sludge pyrolysis gasification is provided for the utility model;

[0019] Figure 3 A partial structure schematic view of the sulfur dioxide purification device for sludge pyrolysis gasification is provided for the utility model;

[0020] Figure 4 A jet assembly structure schematic view of the sulfur dioxide purification device for sludge pyrolysis gasification is provided for the utility model;

[0021] Figure 5 A cover body structure schematic view of the sulfur dioxide purification device for sludge pyrolysis gasification is provided for the utility model.

[0022] Legend: 1, purification box; 2, spray tower; 3, fixed frame; 4, motor; 5, gear; 6, first pipe body; 7, jet assembly; 701, communication block; 702, jet pipe; 703, second pipe body; 704, check valve; 705, through hole; 8, side hole; 9, exhaust hole; 10, cover body; 11, liquid inlet pipe; 12, liquid outlet pipe; 13, stirring frame. DETAILED DESCRIPTION

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1: As Figures 1-5 As shown, this utility model provides a sulfur dioxide purification device for sludge pyrolysis and gasification, including a purification box 1 and a spray tower 2. A fixing frame 3 is fixedly connected to one outer surface of the purification box 1, and a motor 4 is fixedly connected to the outer surface of the fixing frame 3. A stirring frame 13 is symmetrically arranged inside the purification box 1. Gears 5 are fixedly connected to one end of the outer surface of each of the two stirring frames 13. An air jet assembly 7 is arranged at the bottom of the inner part of the purification box 1. The air jet assembly 7 includes a connecting block 701. The bottom of the connecting block 701 is fixedly connected to the bottom of the inner part of the purification box 1. Multiple nozzles 702 are uniformly fixedly connected to the top of the connecting block 701. One-way valves 704 are arranged on the outer surface of each of the multiple nozzles 702. A second pipe 703 is fixedly connected to the front surface of the connecting block 701. Body 703 is fixedly penetrated through the outer surface of the purification box 1 and extends outward. Stirring rack 13 rotates through the outer surfaces of both sides of the purification box 1. One end of stirring rack 13 extends outward. The output end of motor 4 rotates through the outer surface of fixed frame 3. The output end of motor 4 is fixedly connected to the end face of one of stirring racks 13. Two gears 5 are located on the outside of the purification box 1. The outer surfaces of the two gears 5 mesh and rotate. A cover 10 is fixedly connected to the inner bottom of the purification box 1. The outer surfaces of both sides of the cover 10 are in contact with the inner surface of the purification box 1. Multiple exhaust holes 9 are equidistantly opened on the top of the cover 10. Side holes 8 are equidistantly opened on the outer surfaces of both sides of the cover 10. The top of the spray tower 2 is fixedly connected to the first pipe 6. The bottom of the first pipe 6 is fixedly connected to the top of the second pipe 703.

[0026] The effect achieved by the whole embodiment 1 is that when purifying the waste gas containing sulfur dioxide generated by sludge pyrolysis gasification, the exhaust end of the pyrolysis gasification device is connected with the spray tower 2 for use, so that most of the sulfur dioxide in the waste gas is removed by the spray tower 2, and to prevent part of the waste gas from escaping and failing to react with the spray liquid, the first pipe body 6 and the second pipe body 703 are fixedly connected in communication, so that the sprayed and escaped gas can be introduced into the communication block 701, and the gas will be discharged through the through holes 705 opened at the top of the plurality of spray pipes 702. Since the appropriate purification liquid is injected into the purification tank 1, the gas will contact and react with the purification liquid during the rising process. The plurality of gas sensors equally arranged at the top of the cover body 10 will sense the rising flow of the gas and feed back information to the external controller, and the external controller will control the starting motor 4. The output end of the motor 4 will directly drive the stirring frame 13 connected thereto, and the directly driven stirring frame 13 will engage and transmit another gear 5 through the gear 5 connected to the surface during rotation, so that the two stirring frames 13 will rotate towards each other in the purification tank 1, and the gas discharged from the communication block 701 will be stirred to form fine bubbles, so that the residual sulfur dioxide in the gas can fully contact and react with the purification liquid. The automatic degree is high, the waste gas purification effect is good, the waste gas maintains a relatively fast flow speed during the purification process, and multiple layers of filter cloth can be avoided in the spray tower 2 to sacrifice the gas flow speed to solve the problem of partial waste gas escape, thereby improving the waste gas purification efficiency.

[0027] Embodiment 2: as shown in Figures 1-5 , the difference between this embodiment and embodiment 1 is only that the top of the spray pipe 702 is uniformly provided with a plurality of through holes 705, the one-way valve 704 is arranged in communication with the spray pipe 702, the other side of the outer surface of the purification tank 1 is fixedly connected with the liquid inlet pipe 11 near the top, and the other side of the outer surface of the purification tank 1 is fixedly connected with the liquid outlet pipe 12 near the bottom.

[0028] The effect achieved by the whole embodiment 2 is that when in use, the arrangement of the one-way valve 704 can avoid the purification liquid in the purification tank 1 from entering the communication block 701 during non-use, causing the particles in the solution to precipitate and block the inside. By arranging the end faces of the liquid inlet pipe 11 and the liquid outlet pipe 12 on the same plane and both being higher than the liquid level in the purification tank 1, the need for plugging the liquid outlet pipe 12 for use is avoided. The inner bottom of the purification tank 1 is fixedly connected with the cover body 10, which is located outside the communication block 701 and the two stirring frames 13. During the gas discharge process, the gas will be concentrated on the inside of the cover body 10 and be stirred by the two stirring frames 13, fully contact and react with the purification liquid, and then be discharged from the plurality of exhaust holes 9, thereby further improving the purification effect of sulfur dioxide in the waste gas.

[0029] Working principle: when purifying the waste gas containing sulfur dioxide generated by sludge pyrolysis gasification, the exhaust end of the pyrolysis gasification equipment is connected with the spray tower 2 for use, so that most of the sulfur dioxide in the waste gas is removed by spraying the spray tower 2, in order to prevent part of the waste gas from escaping and failing to react with the spray liquid, thereby polluting the environment, the first pipe body 6 and the second pipe body 703 are fixedly connected in communication, so that the sprayed and escaped gas can be introduced into the communication block 701, the gas will be discharged through the through holes 705 opened at the top of the plurality of spray pipes 702, since the appropriate purification liquid is injected into the purification tank 1, the gas will contact and react with the purification liquid during the rising process, the plurality of gas sensors arranged equidistantly at the top of the cover body 10 will sense the rising flow of the gas and feed back information to the external controller, and the external controller controls the start of the motor 4, the output end of the motor 4 will directly drive the stirring frame 13 connected therewith, which will engage and transmit another gear 5 through the gear 5 connected to the surface during rotation, so that the two stirring frames 13 will rotate towards each other in the purification tank 1, and the gas discharged from the communication block 701 is stirred to form fine bubbles, so that the residual sulfur dioxide in the gas can fully contact and react with the purification liquid, the degree of automation is high, the waste gas purification effect is good, the waste gas maintains a relatively fast flow speed during the purification process, which can avoid setting multiple layers of filter cloth in the spray tower 2 to sacrifice the gas flow speed to solve the problem of partial waste gas escaping, thereby improving the waste gas purification efficiency, the setting of the one-way valve 704 can avoid the purification liquid in the purification tank 1 from entering the communication block 701 when not in use, causing the particles in the solution to precipitate and block the inside, by setting the end faces of the liquid inlet pipe 11 and the liquid outlet pipe 12 on the same plane and both being higher than the liquid level in the purification tank 1, the need for plugging the liquid outlet pipe 12 for use is avoided, the cover body 10 is fixedly connected to the inner bottom of the purification tank 1, which is located outside the communication block 701 and the two stirring frames 13, so that the gas will be concentrated on the inside of the cover body 10 and be stirred by the two stirring frames 13 during the gas discharge process, and after fully contacting and reacting with the purification liquid, the gas is discharged from the plurality of gas discharge holes 9, thereby further improving the purification effect of sulfur dioxide in the waste gas.

[0030] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application shall fall within the protection scope of the technical scheme of the present application.

Claims

1. A device for purifying sulfur dioxide for sludge pyrolysis gasification, comprising a purifying tank (1) and a spray tower (2), characterized in that: The outside surface of one side of the purification box (1) is fixedly connected with a fixing frame (3), the outer surface of the fixing frame (3) is fixedly connected with a motor (4), the inside of the purification box (1) is symmetrically provided with stirring frames (13), the outer surfaces of the two stirring frames (13) are fixedly connected with gears (5) at positions close to one end, and the inner bottom of the purification box (1) is provided with a gas injection assembly (7). The gas injection assembly (7) comprises a communication block (701), the bottom of the communication block (701) is fixedly connected with the inner bottom of the purification box (1), the top of the communication block (701) is uniformly fixedly connected with a plurality of spray pipes (702), the outer surfaces of the plurality of spray pipes (702) are provided with one-way valves (704), the front surface of the communication block (701) is fixedly connected with a second pipe body (703), the second pipe body (703) is fixedly penetrated through the outer surface of the purification box (1) and extends outward.

2. The apparatus for purifying sulfur dioxide for sludge pyrolysis gasification according to claim 1, characterized by: The stirring frame (13) is rotatably penetrated through the outer surfaces of both sides of the purification box (1), and one end of the stirring frame (13) extends outward.

3. The apparatus for purifying sulfur dioxide for sludge pyrolysis gasification according to claim 2, characterized by: The output end of the motor (4) is rotatably penetrated through the outer surface of the fixing frame (3), and the output end of the motor (4) is fixedly connected with the end surface of one of the stirring frames (13).

4. The device for purifying sulfur dioxide for sludge pyrolysis gasification according to claim 3, characterized by: The two gears (5) are located on the outer side of the purification box (1), and the outer surfaces of the two gears (5) are rotatably connected.

5. The apparatus for purifying sulfur dioxide for sludge pyrolysis gasification according to claim 4, characterized by: The top of the spray pipe (702) is uniformly provided with a plurality of through holes (705), and the one-way valve (704) is in communication with the spray pipe (702).

6. The device for purifying sulfur dioxide for sludge pyrolysis gasification according to claim 5, characterized by: The inner bottom of the purification box (1) is fixedly connected with a cover body (10), the outer surfaces of both sides of the cover body (10) are attached to the inner surfaces of the purification box (1), a plurality of exhaust holes (9) are equidistantly arranged on the top of the cover body (10), and side holes (8) are equidistantly arranged on the outer surfaces of both sides of the cover body (10).

7. The apparatus for purifying sulfur dioxide for sludge pyrolysis gasification according to claim 6, characterized by: The top of the spray tower (2) is fixedly connected with a first pipe body (6), and the bottom of the first pipe body (6) is fixedly connected with the top of the second pipe body (703).

8. The device for purifying sulfur dioxide for sludge pyrolysis gasification according to claim 7, characterized by: The other side of the purification box (1) is fixedly connected with a liquid inlet pipe (11) close to the top, and the other side of the purification box (1) is fixedly connected with a liquid outlet pipe (12) close to the bottom.

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