CN117018788B

CN117018788B - Novel high-efficient wet dedusting tower

Info

Publication number: CN117018788B
Application number: CN202311174139.3A
Authority: CN
Inventors: 宋存文; 周子峰; 王显臣
Original assignee: Shandong Suntory Energy Conservation And Environmental Protection Engineering Co ltd
Current assignee: Shandong Suntory Energy Conservation And Environmental Protection Engineering Co ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-09-03
Anticipated expiration: 2043-09-12
Also published as: CN117018788A

Abstract

The invention belongs to the technical field of efficient dust removal, and particularly relates to a novel efficient wet dedusting tower, which comprises a tower body, wherein a dedusting water tank is arranged at the bottom of the tower body, an inlet flue is fixedly arranged at the lower part of the tower body, a humidifying device is fixedly arranged in the inlet flue, one end of the inlet flue penetrates through the outer wall of the tower body, the other end of the inlet flue is of a right-angle structure, a spraying device, a cyclone dehydrator group, a flushing device, a dedusting device, an efficient demister and a flue gas outlet are sequentially and fixedly arranged in the tower body from bottom to top, and a water guide pipe is fixedly arranged at one side of the inner wall of the tower body. According to the invention, through arranging the cyclone dehydrator, dust-containing water drops in the flue gas can be removed more efficiently; the invention washes the lower part of the spin-ball dust remover by arranging the lower washing layer, thereby avoiding the blockage of the spin-ball dust remover caused by dust accumulation.

Description

Novel high-efficient wet dedusting tower

Technical Field

The invention relates to the technical field of efficient dust removal, in particular to a novel efficient wet dust removal tower.

Background

With the continuous advancement of industrialization, air pollution has become a serious problem threatening the human living environment. A large amount of dust is generated in the production process of industries such as steel, chemical industry, electric power, building materials, mines, cement and the like, and the dust is often generated along with working conditions such as high temperature, steam, oil gas and the like which are not suitable for the treatment of the filter bag dust collector.

At present, the existing wet dust removal system has single structure and low dust removal efficiency, and can not meet the national ultra-low emission requirement.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a novel efficient wet dedusting tower, which solves the problems that the existing wet dedusting system has a single structure and low dedusting efficiency and cannot meet the national ultra-low emission requirement.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a novel high-efficient wet dedusting tower, includes the tower body, the tower body bottom is provided with the dust removal pond, tower body lower part still fixed mounting has an entry flue, the inside fixed mounting of entry flue has humidification device, the outer wall of tower body is run through to the one end of entry flue, the other end of entry flue is right angle structure, inside from down up fixed mounting has spray set, whirl dehydrator group, washing unit, dust collector, high-efficient defroster and the export of flue gas in proper order, tower body inner wall one side fixed mounting has the water guide pipe, the inside still fixed mounting of dust removal pond has liquid level control system.

As a preferable technical scheme of the invention, the spraying device further comprises a primary circulating spraying layer and a secondary circulating spraying layer, wherein the primary circulating spraying layer is fixedly arranged above the inlet flue, and the secondary circulating spraying layer is fixedly arranged above the primary circulating spraying layer.

As a preferable technical scheme of the invention, the flushing device further comprises a lower flushing layer and an upper flushing layer, and the dust removing device further comprises a multi-unit single-layer spin dust remover and a multi-unit double-layer spin dust remover; the flushing device is symmetrically provided with two groups, wherein a multi-unit single-layer spin dust remover group is fixedly arranged between one group, and a multi-unit double-layer spin dust remover group is fixedly arranged between the other group.

As a preferable technical scheme of the invention, the cyclone dehydrator group further comprises cyclone dehydrators, and the cyclone dehydrators are arranged in a honeycomb shape; the cyclone dehydrator also comprises a cyclone cylinder, and dehydration blades are fixedly arranged in the cyclone cylinder.

As a preferable technical scheme of the invention, the multi-unit single-layer spin dust collector and the multi-unit double-layer spin dust collector both comprise spin dust collectors, seven spin dust collectors are fixedly arranged in the multi-unit single-layer spin dust collector in a honeycomb shape, and the multi-unit double-layer spin dust collector comprises a honeycomb structure of the two-layer multi-unit single-layer spin dust collector; the cyclone dust collector further comprises a cyclone bin, a guide vane is fixedly arranged on the lower side of the inside of the cyclone bin, and a plurality of concave balls are fixedly arranged on the upper side of the inside of the cyclone bin.

As a preferable technical scheme of the invention, the high-efficiency demisters are distributed up and down and are fixedly arranged with two demisters.

Compared with the prior art, the invention has the following beneficial effects:

1. According to the invention, the cyclone dehydrator is arranged, so that dust-containing water drops in the flue gas can be removed more efficiently.

2. According to the invention, the lower washing layer is arranged to wash the lower part of the spin-ball dust remover, so that the spin-ball dust remover is prevented from being blocked due to dust accumulation.

3. According to the invention, dust with smaller diameter can be removed by mutually matching the multi-unit single-layer spin dust remover and the multi-unit multi-layer spin dust remover.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a top view of the spin-flow dehydrator;

FIG. 3 is a front view of a spin-flow dehydrator;

FIG. 4 is a schematic diagram of a spin-flow dehydrator bank installation;

FIG. 5 is a top view of a single layer spin-ball duster;

FIG. 6 is a front view of a single layer spin ball duster;

FIG. 7 is a front view of a multi-layered spin-ball duster;

FIG. 8 is a schematic view of a spin-ball cleaner assembly;

Fig. 9 is a schematic view of a concave sphere.

In the figure: 1. an inlet flue; 2. a humidifying device; 3. a tower body; 4. a first-stage circulating spray layer; 5. a second-stage circulating spraying layer; 6. a cyclone dehydrator group; 7. a lower rinse layer; 8. a multi-unit single-layer spin-ball dust collector; 9. an upper rinse layer; 10. a multi-unit double-layer spin-ball dust collector; 11. a high-efficiency demister; 12. a water conduit; 13. a liquid level control system; 14. a swirl pot; 15. dewatering blades; 16. a spin-flow dehydrator; 17. a guide vane; 18. a cyclone bin; 19. a concave sphere; 20. a spin-ball dust remover; 21. a spraying device; 22. a dust removal device; 23. a flushing device; 24. a flue gas outlet; 25. a dust removing water tank.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

Referring to fig. 1-9, the present invention provides the following technical solutions: the utility model provides a novel high-efficient wet dedusting tower, including tower body 3, tower body 3 bottom is provided with dust removal pond 25, tower body 3 lower part still fixed mounting has entry flue 1, the inside fixed mounting of entry flue 1 has humidification device 2, the outer wall of tower body 3 is run through to the one end of entry flue 1, the other end of entry flue 1 is right angle structure, inside from down up fixed mounting has spray set 21 in proper order of tower body 3, cyclone dehydrator group 6, washing unit 23, dust collector 22, high-efficient defroster 11 and flue gas outlet 24, one side fixed mounting that tower body 3 kept away from entry flue 1 has water guide pipe 12, the inside still fixed mounting of dust removal pond 25 has liquid level control system 13.

In the embodiment, the tower body 3 is of a cylindrical steel structure, dust removing water is arranged at the bottom of the tower body 3, the inlet flue 1 is welded with the lower part of the tower body 3, a spraying device 21, a cyclone dehydrator group 6, a cyclone dust remover 20, a high-efficiency demister 11 and the like are arranged in the tower body, a conical opening is arranged at the upper part of the tower body, and a ventilation pipeline is connected with a fan inlet, so that the main function is to provide a sufficient enclosed space for removing dust in flue gas and a mounting space of a dehydration and dust removing device 22; the inlet flue 1 inclines 10 degrees towards the tower body 3, a humidifying device 2 is arranged in the tower body 3, the humidifying device is vertically downwards opened after entering the tower body 3, the height of the opening position is lower than the liquid level height at the bottom of the tower body 3, and the humidifying device mainly serves to guide flue gas to enter the tower body 3, and the flue gas is forced to pass through the dust removing water tank 25 water through the vertically downwards flue, so that part of dust in the flue gas is removed; the humidifying device 2 is positioned in the inlet flue 1 and consists of a water supply pipeline and spray heads, the number of the humidifying device 2 can be properly increased and reduced according to the particle size distribution of dust and the property of the dust, and different types of spray heads can be arranged, so that the main function is to wet the dust in the flue gas entering the tower body 3 in advance, and the subsequent dust capture is facilitated; the water guide pipe 12 is a steel pipeline, the upper opening is arranged on the sealing plate at the edge part of the cyclone dehydrator group 6, and the lower opening is positioned below the water surface at the bottom of the tower body 3, so that flue gas is prevented from directly entering the upper part of the circulating spraying layer through the water guide pipe 12; the liquid level control system 13 is a device for controlling the water level in the dust removing water tank 25, when the water level is lower than the set value of the bottom of the vertical pipe section of the inlet flue 1, the liquid level control system 13 supplies water to the inside of the dust removing water tank 25, and when the water level is higher than the set value of the bottom of the vertical pipe section of the inlet flue 1, the liquid level control system 13 discharges water at the bottom of the dust removing water tank 25.

Specifically, the spraying device 21 further comprises a first-stage circulating spraying layer 4 and a second-stage circulating spraying layer 5, wherein the first-stage circulating spraying layer 4 is fixedly arranged above the inlet flue 1, and the second-stage circulating spraying layer 5 is fixedly arranged above the first-stage circulating spraying layer 4.

In the embodiment, the first-stage circulating spray layer 4 is the lowest spray layer in the tower body 3 and consists of a pipeline and a volute nozzle, water at the bottom of the tower body 3 is pumped by a circulating water pump and is sent to the nozzle to form a first layer of water drops and water mist which cover 200% of the sectional area of the tower body 3, and the first layer of water drops and water mist mainly serves to remove part of large particle dust in flue gas entering the tower body 3; the second-stage circulating spray layer 5 is an upward second-stage spray layer at the bottom in the tower body 3 and consists of a pipeline and a volute spray nozzle, the spray particle size sprayed by the spray nozzle is smaller than that sprayed by the spray nozzle of the first-stage circulating spray layer 4, and the specification of the spray nozzle of the second-stage circulating spray can be adjusted according to the characteristic of dust so as to improve dust capturing efficiency, and the main function is to remove part of dust which is not captured by the first-stage circulating spray layer 4 again.

Specifically, the flushing device 23 further comprises a lower flushing layer 7 and an upper flushing layer 9, and the dust removing device 22 further comprises a multi-unit single-layer spin dust remover 8 and a multi-unit double-layer spin dust remover 10; the flushing device 23 is symmetrically provided with two groups, wherein a multi-unit single-layer spin-ball dust remover group 8 is fixedly arranged between one group, and a multi-unit double-layer spin-ball dust remover group 10 is fixedly arranged between the other group.

In this embodiment, the upper flushing layer 9 and the lower flushing layer 7 are symmetrical structures, and each of them is composed of a pipe and a nozzle, the nozzle is supplied with cleaning water by a water pump, the water pressure at the nozzle is 0.5MPa, and the main function is to flush the upper portion of the spin-ball dust remover 20, so as to avoid the blockage of the spin-ball dust remover 20 caused by dust accumulation.

Specifically, the cyclone dehydrator group 6 further includes a cyclone dehydrator 16, and the cyclone dehydrator 16 is arranged in a honeycomb shape and has seven rows; the cyclone dehydrator 16 further comprises a cyclone cylinder 14, and dehydration blades 15 are fixedly arranged in the cyclone cylinder 14.

In this embodiment, the cyclone dehydrator group 6 is located inside the tower body 3, the upper parts of the first-stage circulating spray layer 4 and the second-stage circulating spray layer 5 are composed of the cyclone cylinder 14 and the dehydration blades 15, when the flue gas containing liquid water enters the cyclone dehydrator group 6, the flue gas can rotate at a high speed in the cyclone cylinder 14 under the action of the dehydration blades 15, meanwhile, dust-containing liquid drops in the flue gas can be thrown onto the inner wall of the cyclone cylinder 14 under the action of centrifugal force, more water on the inner wall of the cyclone cylinder 14 is accumulated, and falls into the dust removing water pool 25 at the bottom of the tower body 3 under the action of the gravity of the water.

Specifically, the multi-unit single-layer spin dust collector 8 and the multi-unit double-layer spin dust collector 10 both comprise spin dust collectors 20, seven spin dust collectors 20 are fixedly arranged in the multi-unit single-layer spin dust collector 8 in a honeycomb shape, and the multi-unit double-layer spin dust collector 10 comprises a honeycomb structure of two layers of multi-unit single-layer spin dust collectors 8; the cyclone dust collector 20 further comprises a cyclone bin 18, a guide vane 17 is fixedly arranged on the lower side inside the cyclone bin 18, and a plurality of concave balls 19 are fixedly arranged on the upper side inside the cyclone bin 18.

In this embodiment, the spin-ball dust collector 20 is the most basic dust collection unit of the multi-unit single-layer spin-ball dust collector 8 and the multi-unit double-layer spin-ball dust collector 10, the two spin-ball dust collectors 20 forming the multi-unit single-layer spin-ball dust collector 8 are connected by bolts, and a sealing layer is arranged between the two spin-ball dust collectors to ensure the filtering effect, and the working principle is that after the filtered flue gas reaches the dust collection device 22, the flue gas firstly flows through the flow guide of the guide vane 17 and then enters the cyclone bin 18 to be filtered by the concave ball 19, so that the dust is primarily separated; the multi-unit double-layer cyclone dust collector 10 is formed by superposing the multi-unit single-layer cyclone dust collector 8 together, is arranged on the upper part of the multi-unit single-layer cyclone dust collector 8, has the same working principle as the multi-unit single-layer cyclone dust collector 8, and removes the dust with smaller particle size, which is not removed by the multi-unit single-layer cyclone dust collector 8, again.

Specifically, the high-efficiency demister 11 is distributed up and down, and two high-efficiency demisters are fixedly installed.

In this embodiment, the efficient demister 11 is composed of a cyclone demister tube and demisting blades, and is installed on the upper portion of the tower body 3, and its structure and working principle are similar to those of the cyclone dehydrator group 6, and its main function is to further remove water drops in flue gas.

Working principle:

In the process that the flue gas enters the tower body 3 through the inlet flue 1, the dust in the flue gas is wetted by the humidifying device 2, so that the dust is conveniently captured by water mist subsequently; then the flue gas vertically and downwards enters into dust removal water in the dust removal water pool 25 through the inside of the tower body 3 of the inlet flue 1, at the moment, the flue gas and water at the bottom of the tower body 3 generate self-excitation effect under the action of negative pressure of a fan, at the moment, part of dust is removed, and primary dust removal is completed;

The flue gas which emerges from the water surface passes through the primary circulation spray layer 4, the secondary circulation spray layer 5 and the cyclone dehydrator 16 in sequence, dust in the flue gas is brought into dust removing water in the dust removing water pool 25 under the collision of high-speed spray water drops, part of dust particles which are not captured form condensation water drops under the action of water mist, and the condensation water drops remove and drop the dust containing water drops in the flue gas into the dust removing water in the dust removing water pool 25 under the action of the cyclone dehydrator 16 to finish secondary dust removal;

The dust with large grain diameter of the flue gas after twice dust removal is basically removed, and the flue gas from the cyclone dehydrator 16 sequentially enters a multi-unit single-layer cyclone dust remover 20, a multi-unit double-layer cyclone dust remover 20 and a two-layer high-efficiency demister 11; when the flue gas enters a single cyclone bin 18 in the multi-unit single-layer cyclone dust collector 20, under the action of the guide vane 17, the flue gas forms a cyclone to push a concave ball 19 in the cyclone bin 18 to perform rotary motion in the cyclone bin 18; at this time, dust particles and mist droplets in the flue gas are converged and become larger dust-containing droplets under the action of turbulence in the cyclone bin 18, and a turbulent coalescence effect is formed. The dust-containing liquid drops are thrown onto the inner wall of the cyclone bin 18 under the action of centrifugal force, the dust-containing liquid drops continuously accumulate in the cyclone bin 18 and drop downwards into water at the bottom of the tower body 3 through self gravity; at this time, the flue gas enters the multi-unit double-layer cyclone dust collector 10 again, the multi-unit double-layer cyclone dust collector 10 can form stronger turbulence, and small-particle-size dust in the flue gas is removed again; finally, the flue gas enters a two-layer high-efficiency demister 11, and water drops in the flue gas are further removed, so that three times of dust removal are completed; the flue gas after three times of dust removal can meet the ultralow emission requirement that the dust emission concentration is less than or equal to 10mg/m < 3 >, and is finally discharged through a flue gas outlet 24.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Novel high-efficient wet dedusting tower, including tower body (3), its characterized in that: the novel dedusting tower is characterized in that a dedusting pond (25) is arranged at the bottom of the tower body (3), an inlet flue (1) is fixedly arranged at the lower part of the tower body (3), a humidifying device (2) is fixedly arranged in the inlet flue (1), one end of the inlet flue (1) penetrates through the outer wall of the tower body (3), the other end of the inlet flue (1) is of a right-angle structure, a spraying device (21), a cyclone dehydrator group (6), a flushing device (23), a dedusting device (22), a high-efficiency demister (11) and a flue gas outlet (24) are sequentially and fixedly arranged in the tower body (3), and a liquid level control system (13) is fixedly arranged in the dedusting pond (25); the cyclone dehydrator group (6) further comprises cyclone dehydrators (16), and the cyclone dehydrators (16) are arranged in a honeycomb shape; the cyclone dehydrator (16) further comprises a cyclone cylinder (14), and dehydration blades (15) are fixedly arranged in the cyclone cylinder (14); two high-efficiency demisters (11) are fixedly arranged and distributed up and down, and each high-efficiency demister (11) consists of a rotational flow demisting cylinder and demisting blades;

The spraying device (21) further comprises a primary circulating spraying layer (4) and a secondary circulating spraying layer (5), wherein the primary circulating spraying layer (4) is fixedly arranged above the inlet flue (1), and the secondary circulating spraying layer (5) is fixedly arranged above the primary circulating spraying layer (4);

The washing device (23) further comprises a lower washing layer (7) and an upper washing layer (9), and the dust removing device (22) further comprises a multi-unit single-layer spin dust remover (8) and a multi-unit double-layer spin dust remover (10); two groups of flushing devices (23) are symmetrically arranged, a multi-unit single-layer spin dust remover (8) is fixedly arranged between one group of flushing devices, and a multi-unit double-layer spin dust remover (10) is fixedly arranged between the other group of flushing devices;

The multi-unit single-layer spin dust collector (8) and the multi-unit double-layer spin dust collector (10) both comprise spin dust collectors (20), the inside of the multi-unit single-layer spin dust collector (8) is provided with a plurality of spin dust collectors (20) in a honeycomb shape, and the multi-unit double-layer spin dust collector (10) comprises two layers of honeycomb multi-unit single-layer spin dust collectors (8); the cyclone dust collector (20) further comprises a cyclone bin (18), guide vanes (17) are fixedly arranged on the lower side inside the cyclone bin (18), and a plurality of concave balls (19) are fixedly arranged on the upper side inside the cyclone bin (18).