Tail gas treatment device of incinerator

Abstract

The utility model relates to the technical field of tail gas treatment, and discloses a tail gas treatment device of an incinerator, which comprises a tank body, the tank body comprises an upper cover body and a lower tank body which are connected through a flange; the device further comprises a waste heat absorption assembly. The waste heat absorption assembly comprises at least one gas distribution heat exchange piece. The gas distribution heat exchange piece is positioned in the lower tank body between the activated carbon layer and the gas inlet pipe; the gas distribution heat exchange piece comprises a cylindrical hollow shell, a plurality of heat exchange pipes, a heat exchange medium inlet pipe and a heat exchange medium outlet pipe; the tail gas waste heat recovery device is provided with the gas distribution heat exchange piece, tail gas waste heat is conveniently recovered, gas distribution is carried out, waste heat waste is avoided, and the use efficiency of activated carbon in the activated carbon layer is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tail gas treatment, in particular to a tail gas treatment device of an incinerator. Background Art

[0002] The regenerative thermal incinerator is also called the regenerative oxidizer, or "RTO" for short. It is a highly efficient organic waste gas treatment equipment. Its principle is to heat the organic waste gas to above 760 degrees Celsius to oxidize and decompose the VOC in the waste gas into carbon dioxide and water. The high-temperature gas produced by oxidation flows through a special ceramic regenerator, causing the ceramic body to heat up and "storage heat". This "heat storage" is used to preheat the subsequent organic waste gas. This saves fuel consumption for heating the waste gas. The ceramic regenerator should be divided into two or more zones or chambers, and each regenerator chamber undergoes the procedures of heat storage-heat release-sweeping in turn, over and over again, and works continuously. However, in actual use, the VOC in the waste gas cannot be completely 100% decomposed, and there will still be some VOC in the tail gas of the incinerator, so the tail gas of the incinerator needs further treatment.

[0003] In the prior art, activated carbon adsorption tanks are often used to adsorb residual VOCs in tail gas. However, since the tail gas of the incinerator contains a large amount of heat, directly using activated carbon adsorption tanks to recover VOCs in the tail gas will cause heat loss. In addition, the replacement method of activated carbon in the activated carbon adsorption tank in the prior art is relatively complicated, which is not conducive to frequent replacement of activated carbon.

[0004] Therefore, there is an urgent need for an incinerator tail gas treatment device to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the existing technical problems and provide a tail gas treatment device for an incinerator.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented according to the following technical scheme:

[0007] An exhaust gas treatment device for an incinerator, comprising a tank body; the tank body comprises an upper cover body and a lower tank body connected by flanges; the top of the upper cover body is connected to an exhaust pipe, and the side wall of the lower tank body is connected to an air intake pipe; an activated carbon layer is arranged in the lower tank body above the air intake pipe; and a waste heat absorption component is also included;

[0008] The waste heat absorption assembly includes at least one air distribution heat exchange component; the air distribution heat exchange component is located in the lower tank between the activated carbon layer and the air inlet pipe;

[0009] The air distribution heat exchange component includes a cylindrical hollow shell, multiple heat exchange tubes, a heat exchange medium inlet pipe, and a heat exchange medium outlet pipe; the outer diameter of the hollow shell matches the inner diameter of the lower tank body, and the hollow shell is fixedly connected to the lower tank body; the heat exchange tube vertically penetrates the hollow shell and is fixedly and sealedly connected to the hollow shell, and multiple heat exchange tubes are evenly distributed in the hollow shell, and a heat exchange cavity is formed between the hollow shell and the heat exchange tubes; the heat exchange medium inlet pipe is located at the lower part of the left side of the hollow shell, and the heat exchange medium outlet pipe is located at the upper part of the right side of the hollow shell, and the heat exchange medium inlet pipe and the heat exchange medium outlet pipe are both connected to the heat exchange cavity.

[0010] When the utility model is in use, the VOC-containing tail gas (hereinafter referred to as tail gas) of the incinerator to be treated enters the lower tank body through the air inlet pipe, passes through the air distribution and heat exchange of the air distribution and heat exchange component, and then passes through the activated carbon layer to adsorb VOC, and then is discharged from the exhaust pipe. When in use, a heat-conducting medium is circulated into the hollow shell through the heat exchange medium inlet pipe and the heat exchange medium outlet pipe to absorb the heat in the tail gas for waste heat recovery. After the tail gas passes through the air distribution and then enters the activated carbon layer, the activated carbon in the activated carbon layer can be fully utilized, thereby improving the adsorption efficiency of VOC.

[0011] The hollow shell and heat exchange tube of the utility model are made of heat-conducting materials commonly used in the art, and those skilled in the art can choose according to actual use requirements.

[0012] Preferably, the waste heat absorption assembly further includes a hollow shaft, a motor, a rotary joint, an upper cleaning brush, a lower cleaning brush, a spray pipe, and a nozzle; the bottom of the lower tank body is connected to a drain pipe;

[0013] A connecting sleeve is fixedly provided through the center of the hollow shell, and a hollow rotating shaft extends from the bottom of the lower tank body into the lower tank body, passes through the corresponding connecting sleeve, and is rotatably connected with the connecting sleeve; the head of the hollow rotating shaft is sealed, and the tail of the hollow rotating shaft is connected with a rotating joint;

[0014] An upper cleaning brush and a lower cleaning brush are respectively arranged above the left side of the upper end face and below the left side of the lower end face of each hollow shell; a spray pipe is arranged above the right side of the upper end face of each hollow shell, and a plurality of nozzles are arranged on the lower end face of the spray pipe; the upper cleaning brush and the lower cleaning brush are fixedly connected to the hollow rotating shaft, and the spray pipe is connected to the hollow rotating shaft; the motor drives the hollow rotating shaft to rotate.

[0015] In the utility model, the bristles of the upper cleaning brush are in contact with the upper end surface of the hollow shell, and the bristles of the lower cleaning brush are in contact with the lower end surface of the hollow shell. The tail gas contains impurities, which may adhere to the hollow shell and the heat exchange tube after long-term use, thereby affecting the efficiency of heat exchange. Therefore, the upper cleaning brush, the lower cleaning brush, and the spray pipe are provided. After a period of use, the hollow shaft can be driven to rotate, and the cleaning liquid can be introduced into the hollow shaft, spraying and cleaning at the same time, so as to maintain the heat exchange efficiency of the hollow shell and the heat exchange tube.

[0016] Preferably, the activated carbon layer comprises a support plate, a placement frame, a connecting column, a hanging ring, and activated carbon;

[0017] The support plate is circular, and a plurality of fan-shaped notches are arranged around the support plate at equal distances; the support plate is fixedly arranged in the lower tank body; the support plate is located above the uppermost hollow shell;

[0018] The placement frame is an integrated structure, including a tubular side wall and a truncated cone-shaped bottom fixedly connected to the lower end of the tubular side wall; the truncated cone-shaped bottom is evenly distributed with through holes; the bottom of the connecting column is fixedly connected to the center of the placement frame, and the head of the connecting column is threadedly connected with a hanging ring; the activated carbon is placed in the placement frame;

[0019] The outer diameter of the tubular side wall matches the inner diameter of the lower tank body; the placement frame is placed on the support plate.

[0020] The activated carbon in the present invention can be selected from the activated carbon commonly used in the field for adsorbing VOCs; those skilled in the art can select granular activated carbon or use an integral honeycomb activated carbon column.

[0021] The activated carbon layer of the utility model can be taken out for replacement and regeneration at any time according to the actual use situation. The entire placement frame and the activated carbon inside can be taken out by opening the upper cover and connecting the hook with the hanging ring by a hoisting device. Then the activated carbon can be replaced and the bottom of the placement frame can be cleaned. The setting of the truncated cone bottom is convenient for guiding the placement frame when it is placed in the lower tank.

[0022] The materials of the various components of the utility model can be selected from commonly used materials in the prior art according to the environment in which they are located. For example, the materials of the various components inside the tank body need not react with the chemical substances in the exhaust gas absorption process, and can be used safely under the temperature requirements if there are temperature requirements. This selection is a conventional selection in the prior art and will not be further described in detail here.

[0023] Components not limited in the present invention all adopt conventional means in the field. Those skilled in the art can select their models and installation methods according to actual usage requirements and clearly understand how to install and control them, which will not be described in detail here.

[0024] The utility model achieves the following beneficial effects:

[0025] The utility model has a simple structure and is easy to operate. The utility model is provided with an air distribution heat exchange component, which is convenient for recovering the waste heat of the exhaust gas while distributing the air, avoiding the waste heat waste and further improving the utilization efficiency of the activated carbon in the activated carbon layer. The activated carbon in the activated carbon layer of the utility model is convenient and quick to replace, which saves replacement time and improves replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0027] Figure 2 for Figure 1 Enlarged view of point E in the middle;

[0028] Figure 3 for Figure 1 Sectional view along line FF;

[0029] Figure 4 for Figure 1 Cross-sectional view of the middle support plate along line GG.

[0030] In the figure: 1. upper cover body; 2. lower tank body; 3. exhaust pipe; 4. air inlet pipe; 5. hollow shell; 6. heat exchange tube; 7. heat exchange medium inlet pipe; 8. heat exchange medium outlet pipe; 9. heat exchange chamber; 10. hollow shaft; 11. motor; 12. rotary joint; 13. upper cleaning brush; 14. lower cleaning brush; 15. spray pipe; 16. nozzle; 17. drain pipe; 18. connecting sleeve; 19. honeycomb activated carbon column; 20. passive bevel gear; 21. active bevel gear; 22. support plate; 23. connecting column; 24. fan-shaped notch; 25. tubular side wall; 26. truncated cone bottom; 27. through hole; 28. ring body; 29. ​​threaded cover. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0032] Example 1

[0033] like Figures 1 to 4 As shown, an exhaust gas treatment device for an incinerator includes a tank body; the tank body includes an upper cover body 1 and a lower tank body 2 connected by flanges; the top of the upper cover body is connected to an exhaust pipe 3, and the side wall of the lower tank body is connected to an air intake pipe 4; an activated carbon layer is arranged in the lower tank body above the air intake pipe; and a waste heat absorption component is also included;

[0034] The waste heat absorption assembly includes two air distribution heat exchange components; the air distribution heat exchange components are located in the lower tank between the activated carbon layer and the air inlet pipe;

[0035] The air distribution heat exchange component includes a cylindrical hollow shell 5, a plurality of heat exchange tubes 6, a heat exchange medium inlet pipe 7, and a heat exchange medium outlet pipe 8; the outer diameter of the hollow shell matches the inner diameter of the lower tank body, and the hollow shell is fixedly connected to the lower tank body; the heat exchange tube vertically penetrates the hollow shell and is fixedly and sealedly connected to the hollow shell, and a plurality of heat exchange tubes are evenly distributed in the hollow shell, and a heat exchange cavity 9 is formed between the hollow shell and the heat exchange tubes; the heat exchange medium inlet pipe is located at the lower part of the left side of the hollow shell, and the heat exchange medium outlet pipe is located at the upper part of the right side of the hollow shell, and the heat exchange medium inlet pipe and the heat exchange medium outlet pipe are both connected to the heat exchange cavity.

[0036] The waste heat absorption assembly also includes a hollow shaft 10, a motor 11, a rotary joint 12, an upper cleaning brush 13, a lower cleaning brush 14, a spray pipe 15, and a nozzle 16; the bottom of the lower tank is connected to a drain pipe 17;

[0037] A connecting sleeve 18 is fixedly provided through the center of the hollow shell, and a hollow rotating shaft extends from the bottom of the lower tank body into the lower tank body, passes through the corresponding connecting sleeve, and is rotatably connected with the connecting sleeve; the head of the hollow rotating shaft is sealed, and the tail of the hollow rotating shaft is connected with a rotating joint;

[0038] The hollow rotating shaft is rotatably connected to the lower tank body; a passive bevel gear 20 is fixedly arranged on the hollow rotating shaft outside the lower tank body, a motor is arranged at the bottom of the lower tank body, and a driving bevel gear 21 is fixedly arranged at the movable end of the motor; the driving bevel gear is meshed with the passive bevel gear;

[0039] An upper cleaning brush and a lower cleaning brush are respectively arranged above the left side of the upper end face and below the left side of the lower end face of each hollow shell; a spray pipe is arranged above the right side of the upper end face of each hollow shell, and a plurality of nozzles are arranged on the lower end face of the spray pipe; the upper cleaning brush and the lower cleaning brush are fixedly connected to the hollow rotating shaft, and the spray pipe is connected to the hollow rotating shaft; the motor drives the hollow rotating shaft to rotate.

[0040] The activated carbon layer includes a support plate 22, a placement frame, a connecting column 23, a hanging ring, and activated carbon;

[0041] The support plate is circular, and a plurality of fan-shaped notches 24 are arranged around the support plate at equal distances; the support plate is fixedly arranged in the lower tank body; the support plate is located above the uppermost hollow shell;

[0042] The placement frame is an integrated structure, including a tubular side wall 25, and a truncated cone-shaped bottom 26 fixedly connected to the lower end of the tubular side wall; through holes 27 are evenly distributed on the truncated cone-shaped bottom; the bottom of the connecting column is fixedly connected to the center of the placement frame, and the head of the connecting column is threadedly connected with a hanging ring; the activated carbon is placed in the placement frame;

[0043] The outer diameter of the tubular side wall matches the inner diameter of the lower tank body; the placement frame is placed on the support plate.

[0044] The hanging ring in this embodiment includes a ring body 28 and a threaded cover 29 at the bottom of the ring body, and the threaded cover is threadedly connected to the head of the connecting column.

[0045] The activated carbon in this embodiment is an integral honeycomb activated carbon column 19, the outer diameter and bottom shape of the honeycomb activated carbon column match the inside of the placement frame, and the center of the honeycomb activated carbon column is also provided with a channel for the connecting column to pass through. When the honeycomb activated carbon column needs to be taken out or placed in the placement frame, the hanging ring at the head of the connecting column can be removed.

[0046] When this embodiment is in use, the exhaust gas enters from the air intake pipe, undergoes heat exchange in two air distribution heat exchange components and continues to rise inside the lower tank body after air distribution, passes through the support plate and the truncated cone-shaped bottom, and contacts with the activated carbon (honeycomb activated carbon column). After being adsorbed by the activated carbon, the exhaust gas is discharged from the exhaust pipe.

[0047] After a period of use, this embodiment can pass cleaning liquid (clean water, hot water, or water containing cleaning agent, etc., selected according to actual cleaning needs) into the hollow shaft through the rotary joint to drive the hollow shaft to rotate, so as to flush the hollow shell and the heat exchange tube.

[0048] The technical solution of the present utility model is not limited to the above-mentioned specific embodiments, and all technical variations made according to the technical solution of the present utility model fall within the protection scope of the present utility model.

Claims

1. An exhaust gas treatment device for an incinerator, comprising a tank body; the tank body comprises an upper cover body and a lower tank body connected by flanges; the top of the upper cover body is connected to an exhaust pipe, and the side wall of the lower tank body is connected to an air intake pipe; an activated carbon layer is arranged in the lower tank body above the air intake pipe; the characteristics are: Also included is a waste heat absorption assembly; The waste heat absorption assembly includes at least one air distribution heat exchange component; the air distribution heat exchange component is located in the lower tank between the activated carbon layer and the air inlet pipe; The air distribution heat exchange component includes a cylindrical hollow shell, multiple heat exchange tubes, a heat exchange medium inlet pipe, and a heat exchange medium outlet pipe; the outer diameter of the hollow shell matches the inner diameter of the lower tank body, and the hollow shell is fixedly connected to the lower tank body; the heat exchange tube vertically penetrates the hollow shell and is fixedly and sealedly connected to the hollow shell, and multiple heat exchange tubes are evenly distributed in the hollow shell, and a heat exchange cavity is formed between the hollow shell and the heat exchange tubes; the heat exchange medium inlet pipe is located at the lower part of the left side of the hollow shell, and the heat exchange medium outlet pipe is located at the upper part of the right side of the hollow shell, and the heat exchange medium inlet pipe and the heat exchange medium outlet pipe are both connected to the heat exchange cavity.

2. The tail gas treatment device of an incinerator according to claim 1, characterized in that: The waste heat absorption component also includes a hollow shaft, a motor, a rotary joint, an upper cleaning brush, a lower cleaning brush, a spray pipe, and a nozzle; the bottom of the lower tank is connected to a drain pipe; A connecting sleeve is fixedly provided through the center of the hollow shell, and a hollow rotating shaft extends from the bottom of the lower tank body into the lower tank body, passes through the corresponding connecting sleeve, and is rotatably connected with the connecting sleeve; the head of the hollow rotating shaft is sealed, and the tail of the hollow rotating shaft is connected with a rotating joint; An upper cleaning brush and a lower cleaning brush are respectively arranged above the left side of the upper end face and below the left side of the lower end face of each hollow shell; a spray pipe is arranged above the right side of the upper end face of each hollow shell, and a plurality of nozzles are arranged on the lower end face of the spray pipe; the upper cleaning brush and the lower cleaning brush are fixedly connected to the hollow rotating shaft, and the spray pipe is connected to the hollow rotating shaft; the motor drives the hollow rotating shaft to rotate.

3. The tail gas treatment device of an incinerator according to claim 1, characterized in that: The activated carbon layer includes a support plate, a placement frame, a connecting column, a hanging ring, and activated carbon; The support plate is circular, and a plurality of fan-shaped notches are arranged around the support plate at equal distances; the support plate is fixedly arranged in the lower tank body; the support plate is located above the uppermost hollow shell; The placement frame is an integrated structure, including a tubular side wall and a truncated cone-shaped bottom fixedly connected to the lower end of the tubular side wall; the truncated cone-shaped bottom is evenly distributed with through holes; the bottom of the connecting column is fixedly connected to the center of the placement frame, and the head of the connecting column is threadedly connected with a hanging ring; the activated carbon is placed in the placement frame; The outer diameter of the tubular side wall matches the inner diameter of the lower tank body; the placement frame is placed on the support plate.

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