CN210411150U

CN210411150U - SCR denitration tail gas dust remover

Info

Publication number: CN210411150U
Application number: CN201921367977.1U
Authority: CN
Inventors: 彭德杰; 纪永; 何佳维
Original assignee: Jiangsu Fengrun Environmental Protection Technology Co Ltd
Current assignee: Jiangsu Fengrun Environmental Protection Technology Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-04-28
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a tail gas dust remover after SCR denitration, which solves the problems that tail gas entering an air inlet of the tail gas dust remover after SCR denitration is not fully mixed and can not fully react, the reaction efficiency is not high, reaction liquid is directly discharged after being used up and can not be reused, and waste is caused, and comprises a base, wherein the bottom of the outer side of the base is connected with a water outlet, the middle part of the outer side of the base is provided with a dust exhaust port, the top of the outer side of the base is fixed with an air exhaust port, the bottom of the inner side of the base is provided with a water tank, the top end of the water tank is fixed with a filter screen, the top end of the filter screen is provided with a collecting hopper, the outer side of the top end of the base is fixed with a first connecting plate, and the middle part of the top end of the base is connected with a dust, the removed particles can be filtered and separated, so that the reaction liquid can be reused, and resources are saved.

Description

SCR denitration tail gas dust remover

Technical Field

The utility model belongs to the technical field of dust collecting equipment, concretely relates to tail gas dust remover behind SCR denitration.

Background

The dust removal equipment is equipment for separating dust from flue gas, a denitration device is built on a large scale in a coal-fired power plant in recent years and widely applied due to mature technology and high denitration efficiency, in the flue gas denitration process, unreacted escaping ammonia and water vapor in SO3 and outlet flue gas can generate ammonium bisulfate and ammonium sulfate under certain conditions, the generation amount of the ammonium bisulfate and the ammonium sulfate depends on denitration by a proportional selective catalytic reduction method of NH3 and SO3, fly ash in the flue gas is easy to adhere to cause blockage and corrosion of an air preheater, the fly ash in tail gas after SCR denitration is removed, the fly ash in the flue gas easy to adhere to can be reduced, the blockage of the air preheater can be prevented, and the service life of the equipment can be prolonged.

However, the tail gas entering the air inlet of the tail gas dust remover after SCR denitration at present is not fully mixed, the reaction efficiency is not high, and the reaction liquid cannot be reused.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a tail gas dust remover after SCR denitration, the effectual tail gas that has solved SCR denitration back tail gas dust remover air intake and get into does not have abundant mixing, can not fully react, and reaction efficiency is not high, and reaction liquid exhausts the back, and direct discharge can not used repeatedly, causes extravagant problem.

In order to achieve the above object, the utility model provides a following technical scheme: a tail gas dust remover after SCR denitration comprises a base, wherein the bottom of the outer side of the base is connected with a water outlet, the middle of the outer side of the base is provided with a dust exhaust port, the top of the outer side of the base is fixed with an exhaust port, the bottom of the inner side of the base is provided with a water tank, the top end of the water tank is fixed with a filter screen, the top end of the filter screen is provided with a collecting hopper, the outer side of the top end of the base is fixed with a first connecting plate, the middle of the top end of the base is connected with a dust collecting plate, the inner side of the dust collecting plate is sleeved with a cathode wire, the top end of the cathode wire is connected with a current conducting plate, the top end of the current conducting plate is welded with a binding post, the top end of the first connecting plate is fixed with an upper machine shell, one end, the top end of the upper shell is connected with a top plate, the middle part of the top end of the top plate is provided with a cover plate, and the dust collecting plate and the cathode wire are both electrically connected with direct current.

Preferably, an air exhaust fan is installed on the inner side of the second air inlet and electrically connected with the mains supply.

Preferably, insulating paint is coated on the outer side of the dust collection plate.

Preferably, the sprayer is an electric sprayer, and the sprayer is electrically connected with a mains supply.

Preferably, the number of the first connecting plates is three.

Preferably, the water tank is a plastic component.

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

the utility model discloses novel structure can guarantee the abundant mixing of tail gas that SCR denitration back tail gas dust remover air intake got into to can fully react, improve reaction efficiency, reaction liquid uses the completion back, can filter the separation with the particulate matter of removing, makes reaction liquid can used repeatedly, resources are saved.

Drawings

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

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

FIG. 2 is a schematic view of the cathode line mounting structure of the present invention;

FIG. 3 is a schematic view of the installation structure of the sprinkler head of the present invention;

fig. 4 is the utility model discloses filter screen mounting structure schematic diagram.

In the figure: 1. a base; 2. a water outlet; 3. a dust exhaust port; 4. an exhaust port; 5. a first connecting plate; 6. a dust collecting plate; 7. an upper housing; 8. a water inlet; 9. a first air inlet; 10. a second air inlet; 11. a top plate; 12. a cover plate; 13. a cathode line; 14. a conductive plate; 15. a binding post; 16. a second connecting plate; 17. A conduit; 18. a spray head; 19. a collecting hopper; 20. filtering with a screen; 21. a water tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the first embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present invention comprises a base 1, a water outlet 2 is connected to the bottom of the outer side of the base 1, a dust outlet 3 is installed in the middle of the outer side of the base 1, an exhaust port 4 is fixed to the top of the outer side of the base 1, a water tank 21 is installed at the bottom of the inner side of the base 1, a filter screen 20 is fixed to the top end of the water tank 21, a collecting hopper 19 is installed at the top end of the filter screen 20, a first connecting plate 5 is fixed to the outer side of the top end of the base 1, a dust collecting plate 6 is connected to the middle of the top end of the base 1, a cathode wire 13 is sleeved inside the dust collecting plate 6, a conductive plate 14 is connected to the top end of the cathode wire 13, a binding post 15 is welded to the top end of the conductive plate 14, a second connecting plate 16 is fixed in the middle of the inner side of the upper case 7, one end, far away from the upper case 7, of the second connecting plate 16 is provided with a guide pipe 17, one end, far away from the second connecting plate 16, of the guide pipe 17 is connected with a spray head 18, the top end of the upper case 7 is connected with a top plate 11, a cover plate 12 is installed in the middle of the top end of the top plate 11, and the dust collecting plate 6 and the cathode wire 13 are.

In the second embodiment, based on the first embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, an air extracting fan is installed inside the second air inlet 10, and the air extracting fan is electrically connected to the utility power and can extract air from the outside into the equipment.

In the third embodiment, on the basis of the first embodiment, as shown in fig. 1, 2, 3 and 4, the insulating paint is coated on the outer side of the dust collection plate 6, so that electric shock caused by mistaken touch on the dust collection plate 6 is prevented.

In a fourth embodiment, based on the first embodiment, as shown in fig. 1, 2, 3 and 4, the spray head 18 is an electric spray head, and the spray head 18 is electrically connected to the commercial power to spray water to provide a humid reaction environment.

In the fifth embodiment, based on the first embodiment, as shown in fig. 1, 2, 3 and 4, the number of the first connecting plates 5 is three, so that the structural stability can be maintained.

Sixth embodiment, based on the first embodiment, as shown in fig. 1, 2, 3 and 4, the water tank 21 is a plastic member to prevent corrosion of metal.

In this embodiment: the spray head 18 adopts a JK01 spray head, the suction fan adopts an APB-25 suction fan, the dust collecting plate 6 adopts a CG32 dust collecting plate, and the cathode line 13 adopts a JKD1 cathode line.

The working principle is as follows: when the tail gas dust remover after SCR denitration is used, tail gas after denitration treatment is introduced from one end of a first air inlet 9, which is far away from an upper shell 7, an exhaust fan arranged on the inner side of a second air inlet 10 is electrified, the exhaust fan sucks in outside air, and impacts the tail gas after denitration treatment to enable the tail gas in the first air inlet 9 to rotate, so that the tail gas after denitration treatment can be fully and uniformly mixed under the action of continuous rotating force, when most of the tail gas enters the inner side of the upper shell 7, reaction liquid can enter from a water inlet 8 and is sprayed out through a spray head 18 to enable the tail gas to become wet, a wet reaction environment is created, a dust collecting plate 6 is connected with an anode and a cathode line 13 to be connected with a cathode, an electric field can be formed between the dust collecting plate 6 and the cathode line 13, dust with points can be adsorbed on the dust collecting plate 6, and the liquid after reaction flows to a collecting hopper 19, the liquid after reaction passes through the filter screen 20, the residue is filtered out and discharged from the dust discharge port 3, the filtered reaction liquid can be collected by the water tank 21 and flows out from the water discharge port 2, and the reaction liquid can be repeatedly used.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a tail gas dust remover after SCR denitration, includes base (1), its characterized in that: the dust collector is characterized in that a water outlet (2) is connected to the bottom of the outer side of the base (1), a dust exhaust port (3) is installed in the middle of the outer side of the base (1), an exhaust port (4) is fixed to the top of the outer side of the base (1), a water tank (21) is installed at the bottom of the inner side of the base (1), a filter screen (20) is fixed to the top end of the water tank (21), a collecting hopper (19) is installed at the top end of the filter screen (20), a first connecting plate (5) is fixed to the outer side of the top end of the base (1), a dust collecting plate (6) is connected to the middle of the top end of the base (1), a cathode wire (13) is sleeved on the inner side of the dust collecting plate (6), a current conducting plate (14) is connected to the top end of the cathode wire (13), a binding post (15, keep away from upper casing (7) one side in first air intake (9) outside and install second air intake (10), upper casing (7) inboard middle part is fixed with second connecting plate (16), second connecting plate (16) are kept away from upper casing (7) one end and are installed pipe (17), pipe (17) are kept away from second connecting plate (16) one end and are connected with shower nozzle (18), upper casing (7) top is connected with roof (11), roof (11) top mid-mounting has apron (12), board (6) and the negative pole line (13) of gathering dust all with direct current electric connection.

2. The SCR denitrated tail gas dust remover according to claim 1, characterized in that: and an air exhaust fan is arranged on the inner side of the second air inlet (10) and is electrically connected with the mains supply.

3. The SCR denitrated tail gas dust remover according to claim 1, characterized in that: and insulating paint is coated on the outer side of the dust collection plate (6).

4. The SCR denitrated tail gas dust remover according to claim 1, characterized in that: the spray head (18) is an electric spray head, and the spray head (18) is electrically connected with a mains supply.

5. The SCR denitrated tail gas dust remover according to claim 1, characterized in that: the number of the first connecting plates (5) is three.

6. The SCR denitrated tail gas dust remover according to claim 1, characterized in that: the water tank (21) is a plastic component.