Waste gas treatment device

Abstract

The utility model relates to a waste gas treatment device, which belongs to the technical field of environmental protection equipment and comprises a spray tower, a waste gas inlet pipe, a waste gas outlet pipe, an adsorption tower, a blow-off pipe, a partition plate and a discharge agent pipe. A treating agent conveying ring pipe and a cooling water conveying ring pipe are respectively fixed outside the spray tower above and below the partition plate, a plurality of spray pipes are connected to the upper and lower parts of the treating agent conveying ring pipe and the cooling water conveying ring pipe, and the inner ends of the spray pipes extend into the spray tower and are fixedly connected with spray heads. The spray tower is divided into two parts, waste gas at the lower part enters the spray tower, is subjected to spray cooling and dust removal through cooling water, then enters the upper part of the spray tower to be treated by spraying a treating agent, then enters the adsorption tower to be adsorbed, and is subjected to cooling and dust removal before spraying the treating agent, so that the treatment effect is better; the temperature of the waste gas entering the adsorption tower is lower, so that the adsorption of the adsorption tower is not influenced.

Description

Technical Field

[0001] The utility model relates to a waste gas treatment device, belonging to the technical field of environmental protection equipment. Background Art

[0002] Chemical production and petroleum refining generate a large amount of waste gas, which requires treatment before discharge. Current treatment devices primarily pass the waste gas through a spray tower, spraying a treatment agent with it for treatment, and then passing it into an adsorption box for adsorption. However, the waste gas contains high temperatures and dust, so directly spraying the treatment agent can easily affect the treatment effect. Furthermore, the high temperature of the waste gas after entering the adsorption box also affects the adsorption effect. Utility Model Content

[0003] The utility model provides a waste gas treatment device to solve the problems that the waste gas of the current device has high temperature and dust, directly spraying the treatment agent easily affects the treatment effect, and the high temperature of the waste gas after entering the adsorption box also affects the adsorption effect.

[0004] The utility model relates to an exhaust gas treatment device, comprising a spray tower, an exhaust gas inlet pipe is provided at the lower part of the spray tower, an exhaust gas outlet pipe is connected to the top of the spray tower, the exhaust gas outlet pipe is connected to an adsorption tower, a sewage pipe is provided at the bottom of the spray tower, a partition is provided in the middle part of the spray tower, an agent discharge pipe is provided on the spray tower above the partition, a connecting pipe is fixed to the middle part of the partition, the connecting pipe and the top of the exhaust gas inlet pipe are both connected to a uniform distributor, a treatment agent delivery ring pipe and a cooling water delivery ring pipe are respectively fixed to the outside of the spray tower above and below the partition, a plurality of spray pipes are connected to the upper and lower parts of the treatment agent delivery ring pipe and the cooling water delivery ring pipe, and the inner end of the spray pipe extends into the spray tower and is fixedly connected to a nozzle.

[0005] As a preferred embodiment, the uniform distributor includes a uniformly distributed ring tube, the bottom of which is evenly provided with inclined air outlet holes spraying toward the center, and a plurality of connecting pipes are fixedly connected on the inner wall of the uniformly distributed ring tube. The upper and lower connecting pipes are respectively fixedly connected to the connecting pipe and the exhaust gas inlet pipe, so that the exhaust gas entering the spray tower can be evenly distributed, and the spray cooling and treatment effects are better.

[0006] As a preferred embodiment, an overflow pipe is provided on the side wall of the spray tower below the exhaust gas inlet pipe, the overflow pipe is connected to a storage tank, the storage tank is connected to a circulation pipe, the other end of the circulation pipe is connected to the cooling water delivery ring pipe, and the circulation pipe is provided with a circulation pump and a heat exchanger, which can recycle the cooling water and save water.

[0007] As a preferred embodiment, a filter is provided on the overflow pipe to filter out dust and impurities in the circulating cooling water to prevent blockage and damage to the circulating pump.

[0008] As a preferred embodiment, a demister is provided on the top of the spray tower to remove water mist in the exhaust gas to prevent it from affecting the subsequent activated carbon adsorption.

[0009] As a preferred embodiment, an exhaust pipe is connected to the top of the adsorption tower, and no less than two adsorption towers are connected in parallel between the exhaust pipe and the exhaust gas outlet pipe. Valves are provided on the upper and lower pipes of each adsorption tower, so that when maintaining, replacing and cleaning the activated carbon adsorption plate, cleaning can be done without stopping the machine.

[0010] The utility model has the following beneficial effects:

[0011] By dividing the spray tower into two parts, the exhaust gas from the lower part enters the spray tower and is first cooled and dusted by cooling water spray, and then enters the upper part of the spray tower for spraying treatment agent treatment, and then the exhaust gas enters the adsorption tower for adsorption. Cooling and dust removal are performed before spraying the treatment agent, which has a better treatment effect, and the temperature of the exhaust gas entering the adsorption tower is lower, which will not affect the adsorption of the adsorption tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of part of the structure;

[0014] Figure 3 Schematic diagram of the bottom structure of the uniformly distributed ring tube;

[0015] In the figure: 1. spray tower, 2. exhaust gas inlet pipe, 3. uniformly distributed ring pipe, 4. nozzle, 5. spray pipe, 6. cooling water delivery ring pipe, 7. quick-change connector, 8. connecting hose, 9. agent discharge pipe, 10. connecting pipe, 11. partition, 12. treatment agent delivery ring pipe, 13. demister, 14. exhaust gas outlet pipe, 15. exhaust pipe, 16. adsorption tower, 17. overflow pipe, 18. circulation pipe, 19. heat exchanger, 20. circulation pump, 21. storage tank, 22. filter, 23. air outlet, 24. connecting pipe. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments.

[0017] Example 1, as Figures 1 to 3As shown, the utility model is a waste gas treatment device, including a spray tower 1, an exhaust gas inlet pipe 2 is provided at the lower part of the spray tower 1, an exhaust gas outlet pipe 14 is connected to the top of the spray tower 1, the exhaust gas outlet pipe 14 is connected to the adsorption tower 16, a sewage pipe is provided at the bottom of the spray tower 1, a partition 11 is provided in the middle of the spray tower 1, a discharge pipe 9 is provided on the spray tower 1 above the partition 11, a connecting pipe 10 is fixed to the middle of the partition 11, the connecting pipe 10 and the top of the exhaust gas inlet pipe 2 are both connected with a uniform distributor, and a treatment agent delivery ring pipe 12 and a cooling water delivery ring pipe 6 are respectively fixed to the outside of the spray tower 1 above and below the partition 11, the treatment agent delivery ring pipe 12 is connected to the treatment agent liquid inlet pipe, and the treatment agent delivery ring pipe 12 and the cooling water delivery ring pipe 6 are connected to a plurality of spray pipes 5 above and below, and the inner end of the spray pipe 5 extends into the spray tower 1 and is fixedly connected to a nozzle 4. The outer end of the spray pipe 5 is connected to a connecting hose 14 , and quick-change connectors 7 are fixed to both ends of the connecting hose 14 .

[0018] During use, the waste gas enters the lower part of the spray tower 1 from the waste gas inlet pipe 2, and is then evenly distributed through the uniform distributor. Then, when the waste gas rises, it is cooled and dust-removed by the cooling water sprayed from the lower nozzle 4. Then, the waste gas enters the upper uniform distributor from the connecting pipe 10 and is evenly distributed. Then, the waste gas is treated by the treatment agent sprayed from the upper nozzle 4. The treated waste gas enters the adsorption tower 16 from the waste gas outlet pipe 14 for activated carbon adsorption, and then is discharged.

[0019] Example 2. Based on Example 1, the uniform distributor includes a uniformly distributed ring tube 3, the bottom of the uniformly distributed ring tube 3 is evenly provided with inclined air outlet holes 23 spraying toward the middle, and a plurality of connecting pipes 24 are fixedly connected on the inner wall of the uniformly distributed ring tube 3. The upper and lower connecting pipes 24 are respectively fixedly connected to the connecting pipe 10 and the exhaust gas inlet pipe 2.

[0020] An overflow pipe 17 is provided on the side wall of the spray tower 1 below the exhaust gas inlet pipe 2. This overflow pipe 17 is connected to a storage tank 21, which is in turn connected to a circulation pipe 18. The other end of the circulation pipe 18 is connected to the cooling water delivery loop pipe 6. This circulation pipe 18 is equipped with a circulation pump 20 and a heat exchanger 19. The cooling water from the spray flows from the overflow pipe 17 into the storage tank 21, then is delivered by the circulation pump 20 to the heat exchanger 19 for heat exchange and cooling, before being delivered to the cooling water delivery loop pipe 6 for recycling.

[0021] A filter 22 is provided on the overflow pipe 17 .

[0022] A demister 13 is provided on the top of the spray tower 1 .

[0023] The top of the adsorption tower 16 is connected to an exhaust pipe 15. At least two adsorption towers 16 are connected in parallel between the exhaust pipe 15 and the exhaust gas outlet pipe 14. Valves are installed on the upper and lower pipes of each adsorption tower 16. When the activated carbon adsorption plates in the adsorption tower 16 need to be cleaned, the upper and lower valves corresponding to the adsorption tower 16 to be cleaned can be closed, and then the cleaning can be carried out.

[0024] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0025] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A waste gas treatment device, comprising a spray tower (1), wherein a waste gas inlet pipe (2) is provided at the lower portion of the spray tower (1), a waste gas outlet pipe (14) is connected to the top of the spray tower (1), the waste gas outlet pipe (14) is connected to an adsorption tower (16), and a sewage pipe is provided at the bottom of the spray tower (1), characterized in that: A partition (11) is provided in the middle of the spray tower (1), a discharge pipe (9) is provided on the spray tower (1) above the partition (11), a connecting pipe (10) is fixed in the middle of the partition (11), and the tops of the connecting pipe (10) and the exhaust gas inlet pipe (2) are both connected to a uniform distributor, and a treatment agent delivery ring pipe (12) and a cooling water delivery ring pipe (6) are respectively fixed to the outside of the spray tower (1) above and below the partition (11), and the treatment agent delivery ring pipe (12) and the cooling water delivery ring pipe (6) are both connected to a plurality of spray pipes (5) above and below, and the inner ends of the spray pipes (5) extend into the spray tower (1) and are fixedly connected to a nozzle (4).

2. The exhaust gas treatment device according to claim 1, characterized in that: The uniform distributor comprises a uniformly distributed annular tube (3), the bottom of the uniformly distributed annular tube (3) is uniformly provided with inclined air outlet holes (23) spraying toward the center, and a plurality of connecting tubes (24) are fixedly connected on the inner wall of the uniformly distributed annular tube (3), and the upper and lower connecting tubes (24) are respectively fixedly connected to the connecting tube (10) and the exhaust gas inlet pipe (2).

3. The exhaust gas treatment device according to claim 1, characterized in that: An overflow pipe (17) is provided on the side wall of the spray tower (1) below the exhaust gas inlet pipe (2). The overflow pipe (17) is connected to a storage tank (21). The storage tank (21) is connected to a circulation pipe (18). The other end of the circulation pipe (18) is connected to a cooling water delivery ring pipe (6). A circulation pump (20) and a heat exchanger (19) are provided on the circulation pipe (18).

4. The exhaust gas treatment device according to claim 3, characterized in that: A filter (22) is provided on the overflow pipe (17).

5. The exhaust gas treatment device according to claim 1, characterized in that: A demister (13) is provided on the top of the spray tower (1).

6. The exhaust gas treatment device according to claim 1, characterized in that: The top of the adsorption tower (16) is connected to an exhaust pipe (15), and no less than two adsorption towers (16) are connected in parallel between the exhaust pipe (15) and the exhaust gas outlet pipe (14). Valves are provided on the upper and lower pipes of each adsorption tower (16).

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