CN212942220U - Dry-type deacidification tower in hazardous waste incineration system - Google Patents

Abstract

The utility model relates to a dry-type deacidification tower among useless system that burns of danger, it includes the tower body of dry-type deacidification tower, and tower body lower extreme and upper end are provided with air inlet and gas outlet respectively, have set gradually slaked lime feeding device, baking soda feeding device and active carbon adsorption device in the tower body from bottom to top, and slaked lime feeding device and baking soda feeding device all spray the output in sucking to the tower body through the powder pump. The utility model has the advantages of improve the deacidification efficiency of dry-type deacidification tower.

Description

Dry-type deacidification tower in hazardous waste incineration system

Technical Field

The utility model relates to a purification treatment technical field of danger wastes material, more specifically say, it relates to a dry-type deacidification tower among useless system that burns of danger.

Background

With the development of socioeconomic and improvement of the living standard of people, a large amount of industrial and agricultural solid wastes, especially dangerous wastes are generated, so that the ecological environment of people is greatly threatened, and the dangerous wastes have the dangerous characteristics of toxicity, flammability, explosiveness, corrosiveness, reactivity, infectivity, radioactivity and the like. According to the international general principle of hazardous waste treatment and disposal, a comprehensive treatment and disposal method needs to be adopted aiming at the characteristics of various types of hazardous waste to realize harmless, quantitative-reduction and resource treatment of the hazardous waste, and the incineration is undoubtedly a reliable, economic, safe and effective means. The rotary kiln incineration technology is the most mainstream technology in the current hazardous waste incineration technology, and can be used for incinerating various solid, semisolid, liquid and gas wastes. However, since the incineration of hazardous waste causes secondary pollution, fundamental research on harmless disposal of hazardous waste is very important.

The Chinese patent with the publication number of CN204593400U discloses a multi-state industrial hazardous waste incineration system, which comprises a feed hopper, a rotary kiln, a secondary combustion chamber, a denitration device, a waste heat boiler, a quench tower, a semi-dry reaction tower, a dry deacidification tower, a cloth bag type dust collector and the like, wherein after neutralization reaction of the quench tower, flue gas is discharged to the dry deacidification tower, in the dry deacidification tower, acidic gas in the flue gas and slaked lime are neutralized, heavy metals in the flue gas and the like are adsorbed by activated carbon, and are removed to a certain degree; the flue gas at the outlet of the dry deacidification tower enters a bag type dust collector, and suspended particles in the flue gas are intercepted by a filter bag and discharged in the form of fly ash in the bag type dust collector; and the smoke passing through the bag-type dust collector is discharged to the atmosphere through a chimney under the action of a draught fan.

In the prior art, similar to the above dry deacidification tower, the deacidification mode is to absorb acid components in the flue gas through slaked lime, and to absorb particulate matters, dioxin and the like in the flue gas through activated carbon, however, in the actual production process, it is found that the effect of absorbing acid gases in the flue gas by only adding slaked lime is insufficient, and part of the acid gases are still brought to the bag-type dust remover to corrode equipment, so that a dry deacidification tower for efficiently removing acid is urgently needed in the existing market.

SUMMERY OF THE UTILITY MODEL

To the technical problem that has now, an object of the utility model is to provide a dry-type deacidification tower among useless system that burns of danger, its advantage that has the deacidification efficiency that improves dry-type deacidification tower.

In order to achieve the above purpose, the utility model provides a following technical scheme: the dry deacidification tower comprises a tower body of the dry deacidification tower, wherein an air inlet and an air outlet are respectively formed in the lower end and the upper end of the tower body, and a slaked lime feeding device, a baking soda feeding device and an active carbon adsorption device are sequentially arranged in the tower body from bottom to top.

By adopting the technical scheme, the baking soda is sprayed into the dry-type deacidification tower through the baking soda feeding device to react with the acid gas in the flue gas, and the powdery baking soda can quickly react with the acid gas, so that the acid substances in the flue gas can be further removed, and the deacidification efficiency of the dry-type deacidification tower is further improved through the dry-type deacidification of multiple substances.

The utility model discloses further set up to: and buffer plates are arranged below the feed ports of the baking soda feeding device and the slaked lime feeding device, are coaxially arranged in the tower body and are funnel-shaped, and the lower ends of the buffer plates are opened.

Through adopting above-mentioned technical scheme, spout the acid gas direct reaction in baking soda rear portion and the flue gas through baking soda feeding device in to the tower body, on partial baking soda dropped to the buffer board downwards, the setting of buffer board will be favorable to prolonging the acid gas fully reaction in baking soda and the flue gas, further improvement dry-type deacidification tower.

The utility model discloses further set up to: at least two buffer plates are arranged below the baking soda feeding device and the slaked lime feeding device, and the aperture of an opening at the lower end of each buffer plate is sequentially reduced from top to bottom.

Through adopting above-mentioned technical scheme, cushion the particulate matter that top-down dropped through being provided with a plurality of buffer boards for sour gas in the flue gas can fully react with baking soda, sets the opening of buffer board lower extreme to the shape of contracting gradually simultaneously, makes higher level's buffer board can drop step by step, in order to reach the effect of buffering step by step.

The utility model discloses further set up to: each buffer board all is the network structure setting.

By adopting the technical scheme, the arrangement of the buffer plate into a net structure enables particles such as sodium bicarbonate and the like to fall off from the buffer plate, and the buffer plate is matched with the buffer plate to better buffer powder materials, so that sufficient reaction is promoted; meanwhile, the buffer plate arranged in a net shape can further promote the fluidity of the flue gas.

The utility model discloses further set up to: the tower body upper end is provided with the motor, the pivot of motor and the coaxial setting of tower body and the coaxial dwang that is provided with, be provided with the cleaning brush that a plurality of pieces are used for wasing residue on the buffer board on the dwang.

Through adopting above-mentioned technical scheme, because the buffer board is when accepting the purpose of likepowder granule in order to realize the buffering, easily glue on the buffer board and adhere to a large amount of likepowder particulate matters and cause the jam to the mesh of buffer board, consequently will wash the buffer board of netted setting through setting up motor, dwang and cleaning brush, avoid the mesh on the buffer board to block up and influence the efficiency of ventilating.

The utility model discloses further set up to: the tower body is internally and fixedly provided with a plurality of fixed rods for stabilizing the position of the rotating rod, and the rotating rod is rotatably connected with each fixed rod.

Through adopting above-mentioned technical scheme, because the one end that the motor was kept away from to the dwang stretches into in the tower body and unsettled setting, stability is relatively poor, consequently will set up the dead lever and consolidate stably to the dwang.

The utility model discloses further set up to: the lower end of the tower body is a cone-shaped aggregate bin, and the lower end of the aggregate bin is provided with a slag discharge port.

By adopting the technical scheme, the collecting hopper and the slag discharge port which are arranged in the conical shape are convenient for removing the waste slag after reaction.

The utility model discloses further set up to: the active carbon adsorption device is arranged as an active carbon filter screen plate.

Through adopting above-mentioned technical scheme, set active carbon adsorption equipment into active carbon filter screen board, be convenient for change on the one hand, on the other hand can be more even filter the flue gas.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the acid gas in the flue gas is fully removed through multiple deacidification by sequentially arranging a slaked lime feeding device, a baking soda feeding device and an active carbon adsorption device from bottom to top in the tower body, and the deacidification speed can be accelerated by utilizing the rapid reaction of the baking soda;

(2) the buffer plate is arranged in the tower body in a multi-layer net-shaped mode and used for buffering the baking soda falling from top to bottom, and the baking soda is further made to fully react with the acid gas in the flue gas.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals: 1. a tower body; 2. an air inlet; 3. an air outlet; 4. a slaked lime feeding device; 5. a baking soda feeding device; 6. an activated carbon adsorption unit; 7. a buffer plate; 8. a motor; 9. rotating the rod; 10. cleaning brushes; 11. fixing the rod; 12. a collection hopper; 13. a slag discharge port.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a dry-type deacidification tower among useless system that burns of danger, including dry-type deacidification tower's tower body 1, tower body 1 lower extreme and upper end are provided with air inlet 2 and gas outlet 3 respectively, have set gradually slaked lime feeding device 4 in the tower body 1 from bottom to top, baking soda feeding device 5 and active carbon adsorption device 6, and slaked lime feeding device 4 and baking soda feeding device 5 all carry out the jet output in sucking to tower body 1 through the powder pump, and the acid gas in the multiple deacidification of so accessible is with the flue gas fully gets rid of.

Wherein, the active carbon adsorption device 6 is arranged as an active carbon filter screen plate. The lower end of the tower body 1 is a cone-shaped collecting hopper 12, and the lower end of the collecting hopper 12 is provided with a slag discharge port 13, so that waste slag can be conveniently discharged and collected and processed in a centralized manner.

At least buffer plate 7 is arranged below the feed ports of baking soda feeding device 5 and slaked lime feeding device 4, in the embodiment, buffer plates 7 are respectively arranged into two parts, each buffer plate 7 is coaxially arranged in tower body 1 and is funnel-shaped, the lower end of each buffer plate 7 is opened, each buffer plate 7 is netted, the opening diameter of the lower end of each buffer plate 7 is reduced from top to bottom, and the acidic gas in the flue gas is convenient to fully react with baking soda and slaked lime.

When the buffer plate 7 receives the powdery particles to achieve the purpose of buffering, a large amount of powdery particles are easily adhered to the buffer plate 7 to block the meshes of the buffer plate 7; consequently, be provided with motor 8 in tower body 1 upper end, motor 8's pivot and the coaxial setting of tower body 1 and the coaxial dwang 9 that is provided with are provided with a plurality of cleaning brushes 10 that are used for wasing residue on buffer board 7 on the dwang 9, will wash the buffer board 7 of netted setting through setting up motor 8, dwang 9 and cleaning brush 10, avoid the mesh on the buffer board 7 to block up and influence the efficiency of ventilating. Further, the tower body 1 is internally provided with a plurality of fixed rods 11 for stabilizing the position of the rotating rod 9, the rotating rod 9 is rotatably connected with each fixed rod 11, and the rotating rod 9 is stabilized by arranging the fixed rods 11.

The implementation principle of the embodiment is as follows: flue gas enters the tower body 1 from the gas inlet 2, flows from bottom to top, and is sprayed into the tower body 1 by the baking soda feeding device 5 and the slaked lime feeding device 4 to react and remove acid, and is filtered again by the activated carbon filter screen plate and then discharged from the gas outlet 3 at the upper end of the tower body 1; at the same time, the motor 8 is turned on periodically to rotate the rod 9, and the cleaning brush 10 is driven to clean each buffer plate 7.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a dry-type deacidification tower among useless system that burns of danger which characterized in that: the acid removal tower comprises a tower body (1) of a dry-type acid removal tower, wherein an air inlet (2) and an air outlet (3) are respectively formed in the lower end and the upper end of the tower body (1), and a slaked lime feeding device (4), a baking soda feeding device (5) and an active carbon adsorption device (6) are sequentially arranged in the tower body (1) from bottom to top.

2. The dry deacidification tower in the hazardous waste incineration system according to claim 1, wherein: and buffer plates (7) are arranged below the feed ports of the baking soda feeding device (5) and the slaked lime feeding device (4), the buffer plates (7) are coaxially arranged in the tower body (1) and are funnel-shaped, and the lower ends of the buffer plates (7) are opened.

3. The dry deacidification tower in the hazardous waste incineration system according to claim 2, wherein: at least two buffer plates (7) are arranged below the baking soda feeding device (5) and the slaked lime feeding device (4), and the aperture of an opening at the lower end of each buffer plate (7) is sequentially reduced from top to bottom.

4. The dry deacidification tower in the hazardous waste incineration system according to claim 2, wherein: each buffer plate (7) is arranged in a net structure.

5. The dry deacidification tower in the hazardous waste incineration system according to claim 2, wherein: tower body (1) upper end is provided with motor (8), the pivot and the coaxial setting of tower body (1) and the coaxial dwang (9) that is provided with of motor (8), be provided with cleaning brush (10) that a plurality of pieces are used for wasing residue on buffer board (7) on dwang (9).

6. The dry deacidification tower in the hazardous waste incineration system according to claim 5, wherein: the tower body (1) is internally provided with a plurality of fixed rods (11) which are used for stabilizing the position of the rotating rod (9), and the rotating rod (9) is rotatably connected with each fixed rod (11).

7. The dry deacidification tower in the hazardous waste incineration system according to claim 1, wherein: the tower body (1) lower extreme is aggregate bin (12) that the toper form set up, aggregate bin (12) lower extreme is provided with row cinder notch (13).

8. The dry deacidification tower in the hazardous waste incineration system according to claim 1, wherein: the active carbon adsorption device (6) is arranged as an active carbon filter screen plate.

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