CN214680975U

CN214680975U - Flue gas desulfurization and denitrification system after thermal desorption tail gas combustion

Info

Publication number: CN214680975U
Application number: CN202120111572.2U
Authority: CN
Inventors: 于磊; 戴建军; 杨峰; 钱乾; 甘雨; 黄峥
Original assignee: Jiangsu Huachuang Environmental Restoration Co ltd
Current assignee: Jiangsu Huachuang Environmental Restoration Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-11-12
Anticipated expiration: 2031-01-15

Abstract

The utility model relates to a flue gas desulfurization and denitration system after thermal desorption tail gas combustion, which comprises a spray tower, wherein a reaction layer is fixedly arranged in an inner cavity of the spray tower, a water distribution pipe is fixedly arranged above the reaction layer, spray heads are uniformly arranged at the bottom of the water distribution pipe, a demister is fixedly arranged above the water distribution pipe, an air equalizing plate is arranged below the reaction layer, a cooling box is fixedly arranged at the left side of the spray tower, a cooling pipe is fixedly arranged in an inner cavity of the cooling box, one end of the cooling pipe is connected with an air inlet pipe, the other end of the cooling pipe is connected with the air equalizing plate, a chimney is fixedly arranged at the right side of the spray tower, the top of the spray tower is connected with the chimney through an air duct, a filter box is arranged on the air duct, an active carbon adsorption layer is fixedly arranged in the inner cavity of the filter box, after the flue gas is cooled firstly, the spray treatment is carried out, the flue gas enters the filter box, and is filtered and adsorbed through the active carbon adsorption layer, the flue gas treatment effect is increased.

Description

Flue gas desulfurization and denitrification system after thermal desorption tail gas combustion

Technical Field

The utility model relates to a flue gas desulfurization deNOx systems behind thermal desorption tail gas burning belongs to flue gas processing technology field.

Background

The thermal desorption remediation technology is that the polluted soil is heated to a temperature above the boiling point of a target pollutant through direct or indirect heating, and the pollutant is selectively promoted to be gasified and volatilized by controlling the system temperature and the material retention time, so that the target pollutant is separated from soil particles and removed; in the process of waste gas disposal, in order to remove organic pollutants contained in the waste gas, the waste gas is generally cleaned by a combustion method in the prior art, and then harmless waste gas is discharged from a chimney, but certain pollutants can also exist in the flue gas after the combustion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flue gas desulfurization deNOx systems behind thermal desorption tail gas burning cools off the back to the flue gas earlier, sprays again and handles the back and get into the rose box in, filters through the active carbon adsorption layer and adsorbs, increases the flue gas treatment effect to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a thermal desorption tail gas combustion back flue gas desulfurization denitration system, includes the spray column, the fixed reaction layer that is equipped with in spray column inner chamber, the fixed water distributor that is equipped with in reaction layer top, the shower head has evenly been seted up to the water distributor bottom, the fixed defroster that is equipped with in water distributor top, the reaction layer below is equipped with the board that equalizes wind, the fixed cooler bin that is equipped with in spray column left side, the fixed cooling tube that is equipped with in cooler bin inner chamber, cooling tube one end is connected with the intake pipe, and the other end is connected with the board that equalizes wind, the fixed chimney that is equipped with in spray column right side, be connected through the air duct between spray column top and the chimney, be equipped with the rose box on the air duct, the fixed active carbon adsorption layer that is equipped with in the rose box inner chamber.

Further, the bottom of the spraying tower is fixedly provided with a reservoir, a filter plate is fixedly arranged in the reservoir, a circulating water pump is fixedly arranged on one side of the reservoir, and the circulating water pump is connected with the water distribution pipe through a water guide pipe.

Furthermore, the reaction layer is filled with reaction filler, and the upper surface and the lower surface of the air-equalizing plate are uniformly provided with air outlets.

Furthermore, the demister is composed of a corrugated plate, and the corrugated plate is connected with the inner wall of the spray tower.

Furthermore, the cooling pipe is arranged in the cooling box in an S shape, and radiating fins are uniformly and fixedly arranged on the cooling pipe.

Furthermore, the filter box symmetry is fixed and is equipped with the filter, the active carbon adsorption layer is located between the filter, install the air guide machine on the air duct.

The utility model has the advantages that:

1. by arranging the cooling box, when in use, the flue gas firstly enters the cooling pipe in the cooling box when being discharged, so that the flue gas is cooled, and meanwhile, heat exchange is needed, so that the waste of heat is avoided;

2. by arranging the spray tower, cooled flue gas enters the spray tower, spray liquid is sprayed on the reaction layer through the water distribution pipe by the circulating water pump, and the flue gas fully contacts with the spray liquid after entering the reaction layer, so that reaction and adsorption are carried out;

3. through setting up the rose box, through spraying the flue gas after handling and reentrant rose box in, filter through the active carbon adsorption layer again and adsorb, increase flue gas treatment effect.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of a flue gas desulfurization and denitrification system after combustion of thermal desorption tail gas of the utility model;

FIG. 2 is a schematic view of a cooling box of a flue gas desulfurization and denitrification system after combustion of thermal desorption tail gas;

reference numbers in the figures: 1. a spray tower; 2. a reaction layer; 3. a water distribution pipe; 4. a shower head; 5. a demister; 6. a wind equalizing plate; 7. a cooling tank; 8. a cooling tube; 9. an air inlet pipe; 10. a chimney; 11. an air duct; 12. a filter box; 13. an activated carbon adsorption layer; 14. a reservoir; 15. a water circulating pump; 16. a heat dissipating fin; 17. a wind guide machine.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a flue gas desulfurization and denitration system after thermal desorption tail gas combustion comprises a spray tower 1, wherein a reaction layer 2 is fixedly arranged in an inner cavity of the spray tower 1, a water distribution pipe 3 is fixedly arranged above the reaction layer 2, spray heads 4 are uniformly arranged at the bottom of the water distribution pipe 3, cooled flue gas enters the spray tower 1, spray liquid is sprayed on the reaction layer 2 through the water distribution pipe 3 by a circulating water pump 15, the flue gas is fully contacted with the spray liquid after entering the reaction layer 2 so as to carry out reaction and adsorption, a demister 5 is fixedly arranged above the water distribution pipe 3, an air equalizing plate 6 is arranged below the reaction layer 2, a cooling box 7 is fixedly arranged at the left side of the spray tower 1, a cooling pipe 8 is fixedly arranged in an inner cavity of the cooling box 7, one end of the cooling pipe 8 is connected with an air inlet pipe 9, the other end of the cooling pipe is connected with the air equalizing plate 6, and when in use, the flue gas firstly enters the cooling pipe 8 in the cooling box 7, thereby cooling treatment is carried out to the flue gas, still needs the heat exchange simultaneously, avoids the heat to be wasted, the fixed chimney 10 that is equipped with in 1 right side of spray column, be connected through air duct 11 between 1 top of spray column and the chimney 10, be equipped with rose box 12 on the air duct 11, the fixed active carbon adsorption layer 13 that is equipped with of rose box 12 inner chamber, through spraying the flue gas after the processing reentrant rose box 12 in, rethread active carbon adsorption layer 13 filters the absorption, increases flue gas treatment effect.

Specifically, as shown in fig. 1, the fixed cistern 14 that is equipped with in spray tower 1 bottom, and the cistern 14 internal fixation is equipped with the filter, cistern 14 one side fixed mounting has circulating water pump 15, and circulating water pump 15 passes through the aqueduct and is connected with water distributor 3, lets spray the liquid and can recycle, resources are saved, reaction layer 2 intussuseption is filled with reaction filler, the exhaust vent has evenly been seted up on two sides about the board 6 that equalizes, can let the flue gas distribution more even, defroster 5 comprises the wave form board, and wave form board and spray tower 1 inner wall connection, can effectively reduce the moisture in the flue gas, the filter is fixed to the rose box 12 symmetry, active carbon adsorption layer 13 is located between the filter, install air director 17 on the air duct 11.

Specifically, as shown in fig. 2, the cooling tube 8 is disposed in the cooling box 7 in an S-shape, and the cooling tube 8 is uniformly fixed with the heat dissipating fins 16, so as to increase the heat exchange efficiency.

The utility model discloses the theory of operation: when using, at first get into the cooling tube 8 in the cooling tank 7 when smoke discharging, thereby carry out cooling treatment to the flue gas, still need the heat exchange simultaneously, avoid the heat to be wasted, flue gas after the cooling gets into spray column 1 in, spray through circulating water pump 15 with spray through water distributor 3 on reaction layer 2, get into reaction layer 2 and go up the back and fully contact with spray when the flue gas, thereby react and adsorb, then in the flue gas reentrant rose box 12, rethread active carbon adsorption layer 13 filters the absorption, increase flue gas treatment effect.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a flue gas desulfurization deNOx systems behind thermal desorption tail gas burning, includes spray column (1), its characterized in that: a reaction layer (2) is fixedly arranged in the inner cavity of the spray tower (1), a water distribution pipe (3) is fixedly arranged above the reaction layer (2), the bottom of the water distribution pipe (3) is uniformly provided with spray headers (4), a demister (5) is fixedly arranged above the water distribution pipe (3), an air-equalizing plate (6) is arranged below the reaction layer (2), a cooling box (7) is fixedly arranged at the left side of the spray tower (1), a cooling pipe (8) is fixedly arranged in the inner cavity of the cooling box (7), one end of the cooling pipe (8) is connected with an air inlet pipe (9), the other end is connected with an air equalizing plate (6), a chimney (10) is fixedly arranged on the right side of the spray tower (1), the top of the spray tower (1) is connected with the chimney (10) through an air duct (11), be equipped with rose box (12) on air duct (11), rose box (12) inner chamber is fixed and is equipped with activated carbon adsorption layer (13).

2. The flue gas desulfurization and denitrification system after thermal desorption tail gas combustion as claimed in claim 1, wherein: the spray tower (1) bottom is fixed and is equipped with cistern (14), and cistern (14) internal fixation is equipped with the filter, cistern (14) one side fixed mounting has circulating water pump (15), and circulating water pump (15) are connected with water distributor (3) through the aqueduct.

3. The flue gas desulfurization and denitrification system after thermal desorption tail gas combustion as claimed in claim 1, wherein: the reaction layer (2) is filled with reaction filler, and the upper surface and the lower surface of the air-equalizing plate (6) are uniformly provided with air outlets.

4. The flue gas desulfurization and denitrification system after thermal desorption tail gas combustion as claimed in claim 1, wherein: the demister (5) is composed of a corrugated plate, and the corrugated plate is connected with the inner wall of the spray tower (1).

5. The flue gas desulfurization and denitrification system after thermal desorption tail gas combustion as claimed in claim 1, wherein: the cooling pipe (8) is arranged in the cooling box (7) in an S shape, and the cooling pipe (8) is uniformly and fixedly provided with radiating fins (16).

6. The flue gas desulfurization and denitrification system after thermal desorption tail gas combustion as claimed in claim 1, wherein: the filter box (12) is symmetrically and fixedly provided with filter plates, the activated carbon adsorption layer (13) is positioned between the filter plates, and the air guide pipe (11) is provided with an air guide machine (17).