CN114307456A

CN114307456A - Adjustable ultralow wet dust collector

Info

Publication number: CN114307456A
Application number: CN202111530840.5A
Authority: CN
Inventors: 李朝东; 刘玉平
Original assignee: Beijing Blue Sky Environmental Science & Technology Co ltd
Current assignee: Beijing Blue Sky Environmental Science & Technology Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-04-12

Abstract

The invention relates to the technical field of industrial dust treatment, in particular to an adjustable ultra-low wet dust collector, which comprises a dust collector case and a ventilation assembly arranged at the air inlet end of the dust collector case; the inner chamber of dust remover machine case is provided with respectively: the dust collector comprises a water accumulation cavity, a smoke processing cavity, a gas discharge cavity and a dehydration cavity, wherein the water accumulation cavity is positioned at the bottom of an inner cavity of a dust collector case; the smoke processing cavity is arranged in the dust remover case and communicated with the flow dividing assembly; the smoke dust treatment cavity is provided with a plurality of shunting treatment cavities in a separated mode, and the shunting treatment cavities are vertically arranged in sequence from top to bottom and are matched with corresponding shunting assemblies; the shunting treatment cavity is internally provided with a spraying and dedusting assembly. This application dust collection efficiency is stable, has promoted granule dust entrapment efficiency simultaneously, and then can reach super low level emission target.

Description

Adjustable ultralow wet dust collector

Technical Field

The invention relates to the technical field of industrial dust treatment, in particular to an adjustable ultra-low wet dust collector.

Background

According to the regulation of GB 28664-2012 national standard 'emission standard of atmospheric pollutants for steelmaking industry', the emission limit value of steel slag smoke particles is 100mg/m during the year 2015, 1 month and 1 day, and at present, dust removal equipment of a plurality of enterprises still cannot reach the national standard; emission limit of flue gas particulate matters specified in ultra-low emission reconstruction working schemes (survey suggestions) of iron and steel enterprises issued again by the ministry of environmental protection in 2018 is 10mg/m for dry distillation. Therefore, the improvement of the dust removal efficiency of the existing wet dust removal equipment needs to integrate a plurality of dust removal technologies, and the improvement of the capture efficiency of the small-particle dust is the key for ensuring 10mg/m cultivation.

The wet dust collector is commonly called as 'water dust collector', and is a device which makes dust-containing gas and liquid (generally water) closely contact, utilizes the inertia collision of water drops and particles or utilizes the full mixing action of water and dust and other actions to trap the particles or make the particles increase or remain in a fixed container to achieve the effect of separating water from dust.

At present, most of wet dust removal equipment at home and abroad is designed according to certain resistance loss so as to ensure the dust removal effect; after the equipment is manufactured, the resistance loss of the dust remover cannot be adjusted according to working conditions in the using process so as to ensure a stable discharging effect; meanwhile, the dehydration effect is poor; the equipment needs to be matched with a larger water tank during operation, and the water consumption is large.

Disclosure of Invention

The present invention is directed to an adjustable ultra-low wet dust collector, which solves the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

an adjustable ultra-low wet dust collector comprises a dust collector case and a ventilation component arranged at the air inlet end of the dust collector case;

the ventilation assembly comprises an air inlet flow guide piece, a flow dividing assembly connected between the air inlet flow guide piece and the dust remover case, and an air inlet end spraying piece arranged on the air inlet flow guide piece;

the inner cavity of the dust remover case is respectively provided with: the dust collector comprises a water accumulation cavity, a smoke processing cavity, a gas discharge cavity and a dehydration cavity, wherein the water accumulation cavity is positioned at the bottom of an inner cavity of a dust collector case;

the smoke processing cavity is arranged in the dust remover case and communicated with the flow dividing assembly; the smoke dust treatment cavity is provided with a plurality of shunting treatment cavities in a separated mode, and the shunting treatment cavities are vertically arranged in sequence from top to bottom and are matched with corresponding shunting assemblies;

the gas in the shunting treatment cavity is guided to the dehydration cavity after passing through the spraying and dust removing component and then is led to the gas discharge cavity; the solution of the spray dust removal assembly is introduced into the dehydration cavity through the flow dividing treatment cavity;

the gas discharge cavity is internally provided with a demisting assembly and a flushing assembly arranged below the demisting assembly; the ponding chamber is externally connected with a backflow component, and a pipeline of the backflow component is respectively connected with the spraying dust removal component, the flushing component and the air inlet end spraying component.

As a further scheme of the invention: the air inlet flow guide piece comprises a flue gas main pipeline and an air inlet square box which is connected with the flue gas main pipeline and is arranged on the dust remover machine case, the flow distribution component is arranged in the air inlet square box and comprises a flow guide body and a plurality of flow guide plates arranged on the rear side of the flow guide body, and the flow guide plates divide the air inlet square box into a plurality of gas transmission ends and are respectively communicated with the corresponding flow distribution treatment cavity.

As a further scheme of the invention: the inlet end sprays the piece and includes that first water supply is responsible for, connects in the metal collapsible tube of first water supply main pipe water delivery end to and install the spray gun on metal collapsible tube, the spray gun inserts to the flue gas trunk line in to the nozzle of spray gun is located the flue gas entrance of flue gas trunk line.

As a further scheme of the invention: the spraying dust removal assembly comprises airflow uniform distribution pipes, a sieve pipe assembly in butt joint with the airflow uniform distribution pipes and a sieve pipe support frame used for mounting the sieve pipe assembly, and the spraying pipes are mounted on the upper edge of the sieve pipe support frame.

As a further scheme of the invention: the bottom of the spray pipe is provided with a spray surface, and the water supply end of the spray pipe is connected along the outside of the dust remover case.

As a further scheme of the invention: the main body of the demisting component is a demister, the demister is installed through a fixing frame, and the fixing frame is fixedly installed on the inner wall of the box body.

As a further scheme of the invention: the flushing assembly comprises a flushing pipe mounting seat arranged on the inner wall of the box body, a flushing pipe erected on the flushing pipe mounting seat and a plurality of flushing nozzles arranged on the flushing pipe at equal intervals, and a flushing valve is arranged at the water inlet end of the flushing pipe.

As a further scheme of the invention: the device comprises a flow-dividing treatment cavity, a spraying and dust-removing assembly, a flow-dividing treatment cavity area, a flue gas chamber, an inner frame plate, a water basin, a spraying pipe and a water bath chamber, wherein the flow-dividing treatment cavity area is internally provided with an inclined plate, a vertical plate and an air guide baffle, the corresponding inclined plate and the vertical plate are crossed in space and divide the area into the flue gas chamber, the inner frame plate is arranged in the flue gas chamber, the inner frame plate is divided into the water basins, the spraying and dust-removing assembly is loaded in the inner cavities of the corresponding water basins, the upper edge area of the spraying and dust-removing assembly is provided with the water bath chamber, and the spraying pipe is installed in the space of the water bath chamber.

As a further scheme of the invention: the tail end of the air guide baffle extends into the dehydration cavity for the upper edge of the spray pipe which is intersected with the vertical plate in space and is arranged below the vertical plate in the water bath room.

As a further scheme of the invention: the water return pipeline is all installed to the drainage end of basin, and every way return water pipe connection is between adjacent basin, and return water pipeline connects in the income water end of its below basin from the basin drainage end of top, lies in the return water pipeline of below and lets in to ponding chamber.

As a further scheme of the invention: and a plurality of folded plate dehydration assemblies are arranged in the dehydration cavity and erected on the upper edges of the corresponding air guide baffles.

As a further scheme of the invention: the backflow component comprises a circulating first circulating pump connected with the water accumulation cavity and a second water supply main pipe connected to the water conveying end of the first circulating pump, the second water supply main pipe is provided with a second circulating pump, and the water conveying end of the second circulating pump is externally connected with the first water supply main pipe and a flushing valve.

As a further scheme of the invention: the airflow distribution pipe comprises a support frame plate and a plurality of flow equalizing branch pipes arranged on the support frame plate, the support frame plate is obliquely erected, the top ends of the flow equalizing branch pipes are parallel and level, and the flow equalizing branch pipes are arranged in parallel in a group.

As a still further scheme of the invention: the sieve tube component comprises a plurality of rectangular tubes, a plurality of round steels arranged at the bottoms of the rectangular tubes and sieve tubes arranged at the bottom ends of the round steels, the sieve tubes are matched with the flow equalizing branch tubes one by one, the flow equalizing branch tubes are inserted into the corresponding sieve tubes, the top and the side walls of the sieve tubes are of a closed structure, and a plurality of air holes distributed in an annular shape are formed in the bottom ends of the sieve tubes.

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

the invention designs an adjustable ultra-low wet dust collector by combining the water bath dust collection principle, and solves the problems of poor dehydration effect, need to build a circulating water tank, high water consumption and the like.

1. The spray gun and the nozzle are arranged on the main flue gas pipeline to carry out primary dust removal on the dust-containing gas in advance, large-particle dust in the flue gas is removed, and dust removal water flows back to a water tank at the bottom of the dust remover from the bottom of the main flue gas pipeline.

2. The flue gas after primary dust removal enters an air inlet square box and is divided into three layers under the action of a flow guide body and a flow guide plate, and the three layers enter an upper layer flue gas chamber, a middle layer flue gas chamber and a lower layer flue gas chamber of the dust remover. And a layered treatment mode is adopted, so that fine dust in the flue gas is favorably captured.

3. The uniform distribution pipes of the flue gas chamber are utilized to divide the gas flow, so that the full contact between the dust-containing gas and the dedusting water is ensured.

4. By utilizing the small holes in the sieve tube component, the airflow is fully subjected to secondary segmentation, so that dust in small bubbles can be fully contacted with dedusting water, and the dust collecting efficiency of water is improved.

5. The design has adjusting screw nut, and the degree of depth that the adjustable screen pipe subassembly inserted the aquatic can change the impact effort of dirty gas and dust removal water, and then adapts to different operating modes.

6. Except the dust removing chamber on the uppermost layer, the distance between the middle layer and the lower layer of flue gas is far away from the outlet, water drops in the flue gas with low flow velocity and water content are easy to gather and settle, and folded plates are arranged in the inner space of the dust remover to remove mechanical water with larger grain diameter in advance.

7. The demister is arranged at a proper position away from the outlet of the equipment, all fog drops can be removed through the demister, and the chimney is guaranteed not to rain.

8. The lower part of the equipment is designed into a steel structure water tank, and the water tank meets the requirement of dust removal circulating water; the spraying water amount of the upper layer is larger than the water supply amount of the middle layer and the lower layer; after the upper spray water is collected behind the basins, the upper spray water flows to the middle basin through an internal pipeline by means of gravity, the middle basin flows to the lower basin, and the lower basin finally flows back to the water tank; ensuring that sufficient water is used for washing each layer to avoid deposition; in addition, a sewage discharge pipe is arranged at the lowest position of each layer of the water basin.

9. The equipment is provided with a circulating pump for recycling water in the dust remover; the sewage pump is used for periodically replacing the enriched sewage; the spray pump is used for providing atomized water and washing water with higher pressure; and the replacement new water interface is used for replacing water supplement.

The method has stable dust removal efficiency, and simultaneously improves the small particle dust collection efficiency, so that the ultra-low emission target of 10mg/m high-speed plantation can be achieved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. Also, the drawings and the description are not intended to limit the scope of the present concepts in any way, but rather to illustrate the concepts of the present disclosure to those skilled in the art by reference to specific embodiments.

Fig. 1 is a schematic view of the overall structure of an adjustable ultra-low wet dust collector provided by the embodiment of the invention.

Fig. 2 is a schematic structural diagram of a vent assembly according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a spray dust removal assembly provided in an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a flow-splitting processing chamber according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a soot processing chamber according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a gas exhaust chamber according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a flushing assembly according to an embodiment of the present invention.

Fig. 8 is a first schematic structural diagram of an airflow distribution pipe according to an embodiment of the present invention.

Fig. 9 is a second schematic structural view of an airflow distribution pipe according to an embodiment of the present invention.

FIG. 10 is a first schematic view of a screen assembly according to an embodiment of the present invention.

FIG. 11 is a second schematic structural view of a screen assembly according to an embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a reflow module according to an embodiment of the invention.

FIG. 13 is a schematic cross-sectional view taken along the line A-A of FIG. 1 according to the present invention.

Fig. 14 is a schematic identification diagram of the dedusting water level provided by the embodiment of the invention.

FIG. 15 is a schematic view of the overall gas flow direction of an adjustable ultra-low wet precipitator provided in an embodiment of the present invention.

FIG. 16 is a schematic view of the overall water flow direction of an adjustable ultra-low wet dust collector provided by an embodiment of the present invention.

In the figure: 1. a base; 2. a box body; 3. an air inlet square box; 4. a first longitudinal partition plate; 5. a flue gas main pipeline; 6. a nozzle; 7. a spray gun; 8. a metal hose; 9. a first main water supply pipe; 10. a flow conductor; 11. a baffle; 12. a first inclined partition plate; 13. a second inclined partition plate; 14. a second longitudinal partition plate; 15. the airflow is uniformly distributed; 16. a screen assembly; 17. a screen pipe support frame; 18. a shower pipe; 19. a flush tube mount; 20. a flush tube; 21. flushing the nozzle; 22. a purge gas outlet; 23. an access door; 24. a demister; 25. flushing the valve; 26. a second water supply main pipe; 27. a flap dewatering assembly; 28. an upper water return pipe; 29. a drain pipe of the basin; 30. a first baffle plate; 31. a middle-layer water return pipe; 32. a second baffle; 34. a liquid level meter; 35. a liquid level meter mounting base; 36. a lower water return pipe; 37. replacing a new water connection pipe; 38. a sewage pump; 39. a first circulation pump; 40. a second circulation pump; 51. an oblique plate member; 52. a vertical plate member; 53. an air guide baffle plate; 54. a flue gas chamber; 55. a basin; 56. a water bath room; 57. a water return pipeline; 58. an inner frame plate; 61. a rectangular tube; 62. round steel; 63. a screen pipe; 64. air holes are formed; 71. a support frame plate; 72. a flow equalizing branch pipe; 80. a vent assembly; 81. an air intake guide member; 82. a flow diversion assembly; 83. an air inlet end spray member; 90. a dust collector case; 91. a smoke processing cavity; 92. a flow splitting treatment cavity; 93. a spray dust removal assembly; 94. a defogging assembly; 95. a gas discharge chamber; 96. a dehydration cavity; 97. a water accumulation cavity; 98. a reflow assembly; 99. and (6) flushing the assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, examples of which are shown in the drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.

It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

In one embodiment;

referring to fig. 1, an adjustable ultra-low wet dust collector is provided, which includes a dust collector case 90, and a ventilation assembly 80 installed at an air inlet end of the dust collector case 90;

the ventilation assembly 80 comprises an air inlet guide part 81, a flow dividing assembly 82 connected between the air inlet guide part 81 and the dust remover case 90, and an air inlet end spraying part 83 arranged on the air inlet guide part 81;

the inner cavity of the dust remover case 90 is respectively provided with: the water accumulation cavity 97 is positioned at the bottom of the inner cavity of the dust remover case 90, the smoke dust processing cavity 91 is positioned above the water accumulation cavity 97, the gas discharge cavity 95 is positioned above the smoke dust processing cavity 91, and the dehydration cavity 96 is arranged at the side edge of the smoke dust processing cavity 91, and the dehydration cavity 96 is communicated with the water accumulation cavity 97;

the smoke processing cavity 91 is arranged inside the dust remover case 90 and communicated with the flow dividing assembly 82; the smoke dust processing cavity 91 is provided with a plurality of shunting processing cavities 92 in a separated mode, and the shunting processing cavities 92 are vertically arranged in sequence from top to bottom and are matched with the corresponding shunting assemblies 82;

the gas in the shunting processing chambers 92 is guided to the dehydration chamber 96 through the spraying dust removal component 93 and then is introduced into the gas discharge chamber 95; the solution of the spray dust removal component 93 is introduced into the dehydration cavity 96 through the diversion treatment cavity 92;

a demisting assembly 94 and a flushing assembly 99 arranged below the demisting assembly 94 are arranged in the gas exhaust cavity 95; the accumulated water cavity 97 is externally connected with a backflow component 98, and pipelines of the backflow component 98 are respectively connected with the spraying dust removal component 93, the flushing component 99 and the air inlet end spraying component 83.

In the operation of the embodiment, the dust remover case 90 is an equipment body, the main body of the shell of the dust remover case 90 is a case body 2, and the bottom of the case body 2 is provided with a base 1; the base 1 may be mounted on a foundation. The air vent assembly 80 is used for introducing air flow to be dedusted; the air inlet guide part 81 is an inlet end of the air flow and provides a driving force for the air flow to enter the inner cavity of the dust remover case 90; the flow dividing assembly 82 is used for dividing the air flow, meanwhile, the smoke dust processing cavity 91 is divided into a plurality of flow dividing processing cavities 92, the air flow is layered for dedusting, and the flow dividing processing cavities 92 are internally provided with spraying dedusting assemblies 93;

the air inlet guide piece 81 is provided with an air inlet end spraying piece 83 for primary spraying and washing, atomized small fog drops carry out coarse dust removal and temperature reduction on dust-containing gas, the spraying and dust removing component 93 sprays water solution and carries out secondary spraying and washing on flue gas, so that the water solution and the air flow collide with each other, and fine dust in the flue gas is captured in the processes of impact and action;

the flue gas after being sprayed and washed is not directly discharged, but is led into the dehydration cavities 96 of all layers, and the dehydration cavities 96 are internally provided with folded plate type structures for dehydrating part of mechanical water; the dehydrated drops fall into the lower water collecting cavity 97; after rising and converging, the layered flue gas finally passes through a demister on the upper part to be subjected to demisting assembly 94 and then enters a front pipeline of the fan machine from a purified gas outlet;

a backflow component 98 is externally connected to the water collecting cavity 97, and pipelines of the backflow component 98 are respectively connected with the spraying dust removal component 93, the flushing component 99 and the air inlet end spraying component 83; the mechanical water for flushing finally falls back to the water accumulation cavity 97, and the backflow component 98 is used for pumping out the water liquid and then pressurizing and conveying the water liquid to the spraying and dust removing component 93, the flushing component 99 and the air inlet end spraying component 83, so that the reciprocating utilization effect is achieved.

In one embodiment;

referring to fig. 2, the air inlet guide member 81 includes a main flue gas pipe 5 and an air inlet square box 3 connected to the main flue gas pipe 5 and mounted on the dust remover case 90, the flow dividing assembly 82 is disposed in the air inlet square box 3, the flow dividing assembly 82 includes a guide body 10 and a plurality of guide plates 11 disposed at the rear side of the guide body 10, and the guide plates 11 divide the air inlet square box 3 into a plurality of air transmission ends and are respectively communicated with the corresponding flow dividing treatment cavities 92.

In this embodiment, the baffle 10 is disposed in the air intake square box 3 to achieve the effect of flow blocking and flow splitting, and the baffle 11 guides the airflow to the corresponding flow splitting processing chamber 92 in a layered manner, so as to perform layered processing on the flue gas.

Air inlet end spraying member 83 includes that first water supply is responsible for 9, connects in the metal collapsible tube 8 that first water supply is responsible for 9 water delivery ends to and install spray gun 7 on metal collapsible tube 8, spray gun 7 inserts to in the flue gas trunk line 5 to spray gun 7's nozzle 6 is located the flue gas entrance of flue gas trunk line 5.

In the embodiment, the spray gun 7 and the nozzle 6 are arranged on the main flue gas pipeline 5 to preliminarily remove dust from dust-containing gas, large-particle dust in flue gas is removed, and dust removing water flows back to the water accumulation cavity 97 at the bottom of the dust remover from the bottom of the main flue gas pipeline 5.

The main flue gas pipeline 5 is externally connected with a dust hood, high-temperature or normal-temperature dust-containing flue gas passes through the dust hood at the front end under the negative pressure action of a fan and enters the main flue gas pipeline 5 after being collected, and a certain number of spray guns 7 are arranged at the front end of the main flue gas pipeline every 3-6 meters; the atomized mist drops of the spray gun 7 carry out coarse dust removal and temperature reduction on the dust-containing gas, and the trapped large-particle dust is settled on the lower part of the pipeline along with the mist drops and is collected into water flow; the dusty water flow flows back along the pipe (the pipe is designed with a slope) to the bottom water tank of the dust remover.

In one embodiment;

referring to fig. 3, the spray dust removing assembly 93 includes an airflow distribution pipe 15, a screen assembly 16 connected to the airflow distribution pipe 15, and a screen support 17 for mounting the screen assembly 16, wherein the spray pipes 18 are mounted on the upper edge of the screen support 17. The bottom of the spray pipe 18 is provided with a spray surface, and the water supply end of the spray pipe 18 is connected along the outside of the dust collector case 90.

Each flow distribution processing chamber 92 is provided with an airflow uniform distribution pipe 15 and a screen pipe assembly 16 which is butted with the airflow uniform distribution pipe 15; the airflow distribution pipes 15 are distributed and installed according to a certain rule, the sieve pipe assembly 16 is used for impacting flue gas and water liquid mutually, the spray pipe 18 is a seamless steel pipe, and small holes are formed in the pipe to provide dedusting water for each layer of the shunting treatment cavity 92.

In one embodiment;

referring to fig. 4, each of the divided flow processing chambers 92 is provided with an inclined plate 51, a vertical plate 52 and an air guide baffle 53, the inclined plate 51 and the vertical plate 52 are spatially intersected and divide the area into a flue gas chamber 54, an inner frame plate 58 is arranged in the flue gas chamber 54, the inner frame plate 58 is divided to form a water basin 55, the spray dust removing assembly 93 is loaded in the inner cavity of the corresponding water basin 55, a water basin 56 is arranged in the upper edge area of the spray dust removing assembly 93, and the spray pipe 18 is installed in the space of the water basin 56.

As an example, fig. 1 shows a mechanism arrangement manner of the present application, a three-layer flue gas treatment structure is designed in this embodiment, and a specific implementation structure of the present application is explained below;

referring to fig. 5, the flue gas after primary dust removal is divided into three layers under the action of the flow guide body 10 and the flow guide plate 11, and enters an upper layer flue gas chamber, a middle layer flue gas chamber and a lower layer flue gas chamber of the dust remover;

in this embodiment, the vertical plate 52 includes a first longitudinal partition plate 4 and a second longitudinal partition plate 14, and the specific implementation structure of the oblique plate 51 is a plurality of first oblique partition plates 12; the first longitudinal partition plate 4 is positioned at the bottom and forms a lower layer flue gas chamber with the inner wall of the box body 2, and the second longitudinal partition plate 14 is matched with the corresponding first inclined partition plate 12 and is mainly used for dividing the inner space of the box body to form an upper layer flue gas chamber and a middle layer flue gas chamber; the specific implementation structure of the inner frame plate 58 is that the second inclined partition plate 13 is assembled with the second longitudinal partition plate 14, and the second inclined partition plate 13 of each layer and the inner wall of the box body 2, the first longitudinal partition plate 4 of the lower layer region, the second longitudinal partition plate 14 of the upper layer region and the second longitudinal partition plate 14 of the middle layer region form independent basins 55 respectively; are all welded and fixed in a precise mode,

in one embodiment;

referring to fig. 6, the main body of the defogging assembly 94 is a defogger 24, the defogger 24 is installed by a fixing frame, and the fixing frame is fixedly installed on the inner wall of the box body 2.

Referring to fig. 7, the flushing assembly 99 includes a flushing pipe mounting seat 19 mounted on the inner wall of the tank 2, a flushing pipe 20 mounted on the flushing pipe mounting seat 19, and a plurality of flushing nozzles 21 equidistantly mounted on the flushing pipe 20, wherein a flushing valve 25 is disposed at a water inlet end of the flushing pipe 20.

Preferably, one end of the flushing nozzle 21 is fixed on the flushing pipe mounting seat 19 by means of a U bolt, and the other end of the flushing nozzle is fixed on the inner wall of the box body 2 by a flange; can be integrally pulled out during maintenance.

Referring to fig. 6, the top of the gas discharge chamber 95 is provided with a purge gas outlet 22, and the purge gas outlet 22 is connected to the front duct of the blower.

In one embodiment;

for the specific operation mode of spraying and dust removal, the design of the embodiment is as follows,

referring to fig. 8 and 9, the airflow distribution pipe 15 includes a support frame plate 71 and a plurality of flow equalizing branch pipes 72 mounted on the support frame plate 71, the support frame plate 71 is erected in an inclined direction, but the top ends of the flow equalizing branch pipes 72 are flush with each other, and the flow equalizing branch pipes 72 are arranged in parallel and aligned in a group of a plurality of branch pipes.

Referring to fig. 10 and 11, the sieve tube assembly 16 includes a plurality of rectangular tubes 61, a plurality of round bars 62 installed at the bottom of the rectangular tubes 61, and sieve tubes 63 installed at the bottom ends of the round bars 62, the sieve tubes 63 are matched with the flow equalizing branch tubes 72 one by one, the flow equalizing branch tubes 72 are inserted into the corresponding sieve tubes 63, the top and the side walls of the sieve tubes 63 are of a closed structure, and a plurality of air holes 64 distributed in an annular shape are formed at the bottom ends of the sieve tubes 63. The screen pipe support frame 17 is a frame structure welded by the rectangular pipe 61 and is welded firmly with the inner wall of the box body 2.

The supporting frame plate 71 is erected on the corresponding second inclined partition plate 13, namely the flow equalizing branch pipes 72 are distributed on the second inclined partition plate 13 according to a certain rule, the sieve pipe assembly 16' is adopted, the sieve pipe 63 enables dust-containing flue gas to flow reversely by means of the blind plate end, meanwhile, a plurality of layers of air holes 64 distributed annularly are formed in the circular pipe wall at the lower part, and the air holes 64 further divide the air flow into small units to impact dedusting water. The upper part of the blind plate end of each screen pipe 63 is welded with the rectangular pipe 61 into a whole through round steel 62, and each group of screen pipes 63 and the rectangular pipe 61 arranged at the upper part are welded together to form a screen pipe assembly;

the upper part of each layer of flue gas chamber is provided with an airflow uniform distribution pipe 15, and the flue gas enters the water bath chambers (upper layer, middle layer and lower layer water bath chambers) after passing through the airflow uniform distribution pipes 15; the flue gas flows downward in the opposite direction at the blind end of the screen assembly 16; when the wind pressure is large enough, the liquid level resistance inserted into the water can be overcome, and smaller bubbles formed by the small holes on the sieve tube 63 are impacted, mixed and interacted with the dedusting water; the fine dust in the flue gas is captured in the impacting and acting process; the small holes in the sieve tube component are utilized to fully divide the air flow for the second time, so that dust in small bubbles can be fully contacted with dedusting water, and the dust collection efficiency of water is improved; the pipeline spraying dust removal and the impact water bath dust removal are combined, and the dust removal efficiency is higher.

In one case of the present embodiment,

referring to fig. 11, the rectangular tube 61 has mounting holes at both ends. Through which the screen assembly 16 is secured to the lead screw of the screen support stand 17. The depth of the sieve tube 63 inserted into the basin can be adjusted by adjusting the position of the screw nut on the sieve tube support frame 17, so that the impact force of gas and water is changed (the resistance loss of the equipment is increased or reduced by about 100Pa every time the insertion depth is changed by 10 mm); thereby adapting to different working conditions;

as an example, the above illustration shows a mechanism arrangement of the gas flow distribution pipes 15 and the screen assemblies 16, each group of gas flow distribution pipes 15 is regularly arranged in a 4 × 4 manner, and the arrangement number can be set according to actual requirements.

In one embodiment;

for the specific operation mode of the dedusting water, the embodiment is designed as follows,

referring to fig. 5, the water return pipes 57 are installed at the water discharge ends of the basins 55, each water return pipe 57 is connected between adjacent basins 55, the water return pipe 57 is connected to the water inlet end of the basin 55 below the water return pipe 57 from the water discharge end of the basin 55 above the water return pipe 57, and the water return pipe 57 located at the lowest position is led into the water accumulation cavity 97.

In this embodiment, the concrete implementation structure of the water return pipeline 57 includes an upper-layer water return pipe 28, a middle-layer water return pipe 31, and a lower-layer water return pipe 36;

the upper water return pipe 28 guides the return water of the upper water basin to the middle water basin, the middle water return pipe 31 guides the water in the middle water basin to the lower water basin, the lower water return pipe 36 guides the water in the lower water basin to the lower water tank, the lowest position of the pipe orifice is lower than the certain distance from the upper end surface of the air flow uniform distribution pipe 15, the water flow is guaranteed not to flow back to the water tank from the air flow uniform distribution pipe 15 and the air inlet square tank 3, and the water return pipe can be arranged in a plurality according to the conditions.

The upper layer supplies water at a large flow rate, and the middle layer and the lower layer supply water at a small flow rate; meanwhile, the supplied water of the upper layer flows into the water basin of the middle layer for reuse, and the water of the water basin of the middle layer flows into the water basin of the lower layer for reuse; the large-flow water supply of each layer is avoided, and the consumption of circulating water is reduced.

A basin blow-off pipe 29 is also arranged at the bottom of each layer of basin and used for bottom drainage to prevent the basin from accumulating mud.

In one case of the present embodiment,

in order to further remove the water vapor existing in the air flow, the embodiment is designed as follows;

referring to fig. 4 and 5, the air guide baffle 53 and the vertical plate member 52 are spatially intersected and disposed at the upper edge of the shower pipe 18 of the water bath chamber 56 therebelow, and the end of the air guide baffle 53 extends into the dehydration chamber 96. A plurality of folded plate dehydration assemblies 27 are arranged in the dehydration cavity 96, and the folded plate dehydration assemblies 27 are erected on the upper edges of the corresponding air guide baffles 53.

The airflow after the water bath dedusting treatment enters the water bath chamber 56 from the water basin 55 area, and the specific implementation structure of the air guide baffle plate 53 is a first baffle plate 30 and a second baffle plate 32; the first baffle 30 and the second baffle 32 are welded with the box body 2 into a whole and are used for forcing the middle layer airflow and the lower layer airflow to pass through the folded plate dehydration component 27 to remove the coagulated large-particle mechanical water.

Folded plate dewatering component 27 adopts compound frame plate, embeds multilayer folded plate structure to do benefit to steam and condense and gather along folded plate column structure, thereby deviate from the large granule mechanical water of condensation.

And finally demisting through a demister on the upper part, and then entering a front pipeline of the fan machine through a purified gas outlet. The mechanical water removed from the demister will eventually fall back into the water tank.

As an example, fig. 5 shows an installation arrangement of the air guide baffle 53, wherein the upper layer dust chamber does not need to be designed with the air guide baffle 53 and the folded plate dehydration assembly 27 for the water vapor dehydration treatment; except the dust removing chamber on the uppermost layer, the distance between the middle layer and the lower layer of flue gas is far away from the outlet, water drops in the flue gas with low flow velocity and water content are easy to gather and settle, and folded plates are arranged in the inner space of the dust remover to remove mechanical water with larger grain diameter in advance.

In one embodiment;

for the water circulation mode in the present embodiment, the following implementation is designed,

referring to fig. 12 and 13, the backflow assembly 98 includes a first circulating pump 39 connected to the water collecting cavity 97, and a second water supply main pipe 26 connected to a water delivery end of the first circulating pump 39, the second water supply main pipe 26 is further provided with a second circulating pump 40, and a water delivery end of the second circulating pump 40 is externally connected to the first water supply main pipe 9 and the flushing valve 25, and is used for water supply operations of the spray gun 7 and the flushing pipe 20. The shower pipes 18 are seamless steel pipes with small holes to provide dust removing water for each layer of basin, in this embodiment, the second main water supply pipe 26 is branched into three pipes which are respectively connected with the water supply ports of the shower pipes 18 at the upper layer, the middle layer and the lower layer.

In the embodiment, the area of the water accumulation cavity 97 is externally connected with a new replacement water connecting pipe 37 for connecting a new replacement water pipe network, so that the effect of periodically supplementing new water is achieved; an electric valve can be additionally arranged on the pipeline to realize automatic control.

The area of the water accumulation cavity 97 is also externally connected with a sewage pump 38, and the sewage pump 38 discharges the dust-containing water with higher turbidity to the existing sewage treatment pipe network or water treatment equipment.

In one case of the present embodiment,

referring to fig. 12 and 14, a liquid level meter mounting seat 35 and a liquid level meter 34 mounted on the liquid level meter mounting seat 35 are further installed in the water accumulation cavity 97; the liquid level meter 34 is used for measuring the liquid level depth in the tank body, so that the automatic control of the equipment is convenient to realize;

as shown in the drawing, h1 is the high liquid level of the dedusting water, h0 is the low liquid level of the dedusting water, and h2 is the insertion depth of the first longitudinal partition plate 4;

the first longitudinal partition plate 4 and the dedusting water liquid surface form a lower layer flue gas chamber; the dust removal water level is controlled to be at the optimal level in the operation process of the equipment, and when the level is higher than h1 or the level is lower than h0, the control system of the equipment gives an alarm. When the first longitudinal partition plate 4 is at the lowest liquid level, the insertion depth is h2, the water column height of h2 is larger than the water column height generated by the maximum negative pressure at the front end of the fan, and meanwhile, a certain safety margin is reserved to prevent air flow from puncturing the water surface and not playing a good sealing effect. The system is provided with a liquid level sensor, and the operation of the sewage pump and the water replenishing loop is controlled to keep the water tank to operate at the optimal water level; when the liquid level is at a low liquid level and a high liquid level, the system starts an alarm function.

In one embodiment;

in this embodiment, the access doors 23 are disposed on the outer walls of the flue gas chambers 54, the gas exhaust chamber 95, the dehydration chamber 96 and the water accumulation chamber 97 of each layer of the flue gas treatment chamber 91, so as to facilitate periodic maintenance of each region of the dust collector.

Fig. 15 is a schematic view of the overall air flow direction of the dust remover of the present invention, and fig. 16 is a schematic view of the overall water flow direction of the dust remover of the present invention.

The invention designs an adjustable ultra-low wet dust collector by combining a water bath dust collection principle, and solves the problems of poor dehydration effect, need of building a circulating water tank, high water consumption and the like.

3. The spray gun 7 and the nozzle 4 are arranged on the main flue gas pipeline 5 to carry out primary dust removal on the dust-containing gas in advance, large-particle dust in the flue gas is removed, and dust removal water flows back to a water tank at the bottom of the dust remover from the bottom of the main flue gas pipeline 5.

4. The flue gas after the primary dust removal enters an air inlet square box 3, and is divided into three layers under the action of a flow guide body 10 and a flow guide plate 11, and the three layers enter an upper layer flue gas chamber, a middle layer flue gas chamber and a lower layer flue gas chamber of the dust remover. And a layered treatment mode is adopted, so that fine dust in the flue gas is favorably captured.

4. By utilizing the small holes in the sieve tube component 16, the airflow is fully divided for the second time, so that the dust in the small bubbles can be fully contacted with the dedusting water, and the dust collecting efficiency of water is improved.

5. The design has the adjusting screw nut, and the depth of the screen pipe assembly 16 inserted into water can be adjusted, so that the impact force of dust-containing gas and dedusting water can be changed (the resistance loss of the equipment is increased or reduced by about 100Pa when the insertion depth is changed by 10 mm), and different working conditions can be adapted.

7. The demister 24 is arranged at a proper position away from the outlet of the equipment, all fog drops can be removed through the demister 24, and the chimney is guaranteed not to rain.

9. The equipment is provided with a circulating pump for recycling water in the dust remover; the sewage pump 38 is used for periodically replacing the enriched sewage; the spray pump is used for providing atomized water and washing water with higher pressure; and the replacement new water interface is used for replacing water supplement.

This patent dust collection efficiency is stable, has promoted granule dust entrapment efficiency simultaneously, and then can reach the ultralow emission target of 10mg/m heavy planting.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An adjustable ultra-low wet dust collector comprises a dust collector case and a ventilation component arranged at the air inlet end of the dust collector case; it is characterized in that the preparation method is characterized in that,

2. The adjustable ultra-low wet dust collector as claimed in claim 1, wherein the air intake guiding member comprises a main flue gas pipe and an air intake square box connected with the main flue gas pipe and mounted on the dust collector case, the flow dividing assembly is disposed in the air intake square box, the flow dividing assembly comprises a flow guiding body and a plurality of flow guiding plates disposed at the rear side of the flow guiding body, the flow guiding plates divide the air intake square box into a plurality of gas transmission ends and are respectively communicated with the corresponding flow dividing treatment cavities.

3. The adjustable ultra-low wet dust collector as claimed in claim 2, wherein the inlet end spray member comprises a first main water supply pipe, a metal hose connected to a water delivery end of the first main water supply pipe, and a spray gun mounted on the metal hose, the spray gun is inserted into the main flue gas pipe, and a nozzle of the spray gun is located at a flue gas inlet of the main flue gas pipe.

4. The adjustable ultra-low wet dust collector as claimed in claim 3, wherein the spray dust collecting assembly comprises an airflow distribution pipe, a screen pipe assembly butted with the airflow distribution pipe, and a screen pipe supporting frame for mounting the screen pipe assembly, and the upper edge of the screen pipe supporting frame is provided with the spray pipe.

5. The adjustable ultra-low wet dust collector as claimed in claim 4, wherein the flushing assembly comprises a flushing pipe mounting seat mounted on the inner wall of the box body, a flushing pipe mounted on the flushing pipe mounting seat, and a plurality of flushing nozzles equidistantly mounted on the flushing pipe, and a flushing valve is arranged at the water inlet end of the flushing pipe.

6. The adjustable ultra-low wet dust collector as claimed in claim 4, wherein the flow distribution pipe comprises a support frame plate and a plurality of flow equalizing branch pipes arranged on the support frame plate, the flow equalizing branch pipes are arranged in parallel and aligned in a group of a plurality of pipes, the sieve pipe assembly comprises a plurality of rectangular pipes, a plurality of round steels arranged at the bottoms of the rectangular pipes and sieve pipes arranged at the bottom ends of the round steels, the sieve pipes are matched with the flow equalizing branch pipes one by one, the flow equalizing branch pipes are inserted into the corresponding sieve pipes, the top and the side wall of the sieve pipes are of a closed structure, and the bottom end of the sieve pipe is provided with a plurality of air holes distributed in an annular shape.

7. The adjustable ultra-low wet dust collector as claimed in claim 1, wherein each split flow treatment chamber is provided with an inclined plate, a vertical plate and an air guide baffle, the corresponding inclined plate and vertical plate are crossed in space and divide the area into a smoke gas chamber, an inner frame plate is arranged in the smoke gas chamber and is divided into water basins, the spray dust collection assembly is loaded in the corresponding water basin inner cavity, a water bath chamber is arranged in the upper edge area of the spray dust collection assembly, and the spray pipe is installed in the space of the water bath chamber.

8. The adjustable ultra-low wet dust collector as claimed in claim 7, wherein the drain ends of the basins are each provided with a return pipe, each return pipe is connected between adjacent basins, the return pipe is connected from the drain end of the upper basin to the water inlet end of the lower basin, and the lowest return pipe is communicated into the water collecting chamber.

9. The adjustable ultra-low wet dust collector as claimed in claim 8, wherein the air guide baffle is spatially intersected with the vertical plate member and disposed at an upper edge of the shower pipe of the water bath chamber therebelow, and a distal end of the air guide baffle extends into the dewatering chamber; and a plurality of folded plate dehydration assemblies are arranged in the dehydration cavity and erected on the upper edges of the corresponding air guide baffles.

10. The adjustable ultra-low wet dust collector as claimed in claim 9, wherein the backflow assembly comprises a first circulating pump connected to the water collecting chamber, and a second water supply main connected to the water output end of the first circulating pump, the second water supply main is further provided with a second circulating pump, and the water output end of the second circulating pump is externally connected to the first water supply main and the flushing valve.