CN212017399U

CN212017399U - Flue gas denitration dry spraying device

Info

Publication number: CN212017399U
Application number: CN202020189870.9U
Authority: CN
Inventors: 王园园; 王磊
Original assignee: Shandong Rongyuan Environmental Protection Technology Co ltd
Current assignee: Shandong Rongyuan Environmental Protection Technology Co ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-11-27
Anticipated expiration: 2030-02-20

Abstract

A flue gas denitration dry spraying device comprises a grinder, an installation bin, a spiral feeder and a fan; the mounting bin is provided with a feeding hole; the top of the mounting bin is provided with a first motor, and a side baffle is arranged inside the mounting bin; the grinder is arranged inside the mounting bin; the grinder is provided with a guide plate with a high middle part and a low periphery; a spiral grinding block is arranged on the periphery of the grinder; a discharging hopper is arranged at the bottom of the grinder; the spiral feeder is arranged on the mounting bin, and the bottom of the blanking funnel is communicated with the feeding end of the spiral feeder; a second motor is arranged on one side of the spiral feeder; a guide pipe is arranged at the discharge end of the spiral conveyor; a rotating part is arranged in the air cavity, a movable plate is arranged on the rotating part in a rotating mode, and a torsion spring is arranged on the rotating part; an air outlet pipe is arranged at the output end of the air cavity; the fan blows air towards the air outlet pipe; the utility model discloses can go out raw materials and the even jetting of catalyst, can avoid the phenomenon of powder caking simultaneously.

Description

Flue gas denitration dry spraying device

Technical Field

The utility model relates to a boiler flue gas treatment facility technical field especially relates to a flue gas denitration dry spray device.

Background

At present, along with the continuous deepening of environmental protection work, the country attaches more and more importance to the haze, and it is one of the important reasons that the haze produced that boiler tail gas smoke and dust is not handled well. Therefore, the national requirements for boiler flue gas treatment are higher and higher, and the requirement of published documents on treatment must meet the ultralow emission standard, namely, after the coal-fired boiler with a generator set is treated by environment-friendly equipment, the nitrogen oxide (NOx) is less than 50mg/m 3; the nitrogen oxide (NOx) of the coal-fired boiler without the generator set is less than 100mg/m 3. The existing accepted boiler flue gas treatment method is a wet-process spraying denitration liquid medicine device, although the device plays a role in the field of flue gas denitration, the method has certain limitation, and because the flue gas temperature is high, the denitration effect is relatively good, so that a proper place needs to be selected to spray a denitration medicament at a boiler flue gas outlet, the boiler heat is taken away by adopting wet-process denitration spraying, the combustion temperature can be reduced, and the denitration effect is influenced.

In order to solve the problem, the application provides a flue gas denitration dry spraying device.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

Because the flue gas temperature is high for solving existence among the background art, the denitration effect is also good a little relatively, consequently need select suitable place to spray the denitration medicament in boiler exhanst gas outlet, adopts wet process denitration to spray and has taken away the boiler heat, can reduce combustion temperature, and the denitration effect receives the technical problem who influences, the utility model provides a flue gas denitration dry spray device, the utility model discloses can go out raw materials and the even jetting of catalyst, can avoid the phenomenon of powder caking simultaneously.

(II) technical scheme

In order to solve the problems, the utility model provides a flue gas denitration dry spraying device, which comprises a grinder, an installation bin, a spiral conveyor and a fan;

the mounting bin is provided with a feeding hole; the top of the mounting bin is provided with a first motor, and a side baffle is arranged inside the mounting bin; the grinder is arranged inside the mounting bin; the output end of the first motor is mounted with the top of the grinder, and the grinder is provided with a guide plate with a high middle part and a low periphery; a spiral grinding block is arranged on the periphery of the grinder; an included angle is formed between the side baffle and the grinding block; the included angle is gradually reduced from top to bottom; a discharging hopper is arranged at the bottom of the grinder;

the spiral feeder is arranged on the mounting bin, and the bottom of the blanking funnel is communicated with the feeding end of the spiral feeder; a second motor is arranged on one side of the spiral feeder and drives the spiral feeder to rotate; a guide pipe is arranged at the discharge end of the spiral conveyor; the guide pipe is vertically arranged, and the bottom of the guide pipe extends to the air cavity; the fan is arranged on one side of the air cavity; a rotating part is arranged in the air cavity, a movable plate is arranged on the rotating part in a rotating mode, and a torsion spring is arranged on the rotating part; an air outlet pipe is arranged at the output end of the air cavity; the fan blows towards the air outlet pipe.

Preferably, the installation bin is of a double-layer structure, an outer shell is arranged outside the installation bin, and an inner shell is arranged inside the installation bin.

Preferably, a cavity is formed between the outer shell and the inner shell, and the cavity is filled with sound absorption cotton.

Preferably, the output end of the air outlet pipe is provided with a spray head, and the periphery of the spray head is provided with an external screw.

Preferably, the spray head is provided with at least one spray opening.

Preferably, at least two feed openings are provided.

Preferably, the air inlet end of the fan is provided with a dust cover.

The above technical scheme of the utility model has following profitable technological effect: in the utility model, the raw material and the catalyst powder are firstly put into the installation bin through the feed inlet, and then the first motor is started and drives the grinder to rotate; the grinder is provided with a guide plate with a high middle part and a low periphery; a spiral grinding block is arranged on the periphery of the grinder; an included angle is formed between the side baffle and the grinding block; the included angle is gradually reduced from top to bottom; the raw materials and the catalyst powder can be uniformly mixed by grinding through a grinder, and simultaneously the agglomerated raw materials or catalysts can be crushed; the crushed raw materials and the catalyst powder are fully and uniformly mixed and are sent into a spiral feeder through a feeding funnel; the second motor is started to drive the spiral feeder to rotate; the spiral feeder rotates to enable the uniformly mixed powder to move towards the direction of the guide pipe; meanwhile, the uniformly mixed powder is compacted and falls down from the guide pipe, at the moment, the movable plate is pushed open by the wind blown out by starting the fan, and the movable plate rotates around the rotating member by a corresponding angle according to the wind power; blowing the uniformly mixed powder into an air outlet pipe under the action of wind power, and finally spraying the powder out of a spray head; thereby carrying out denitration operation on the flue gas; the funnel-shaped air cavity of the utility model can increase the air speed in the air cavity, which is beneficial to blowing out more powder; and the utility model discloses be provided with the torsional spring on the transfer piece, the fly leaf is round rotating a pivoted in-process torsional spring storage elastic potential energy, and when the fan stopped, the elastic potential energy release of torsional spring storage, the fly leaf contacts, goes out the tuber pipe and seals, prevents that the powder from spilling, reduces extravagantly. The utility model discloses can go out raw materials and the even jetting of catalyst, can avoid the phenomenon of powder caking simultaneously.

Drawings

Fig. 1 is the utility model provides a flue gas denitration spouts device's schematic structure diagram futilely.

Fig. 2 is the utility model provides an internal structure schematic diagram in wind chamber among flue gas denitration dry spray device.

Fig. 3 is the utility model provides a flue gas denitration spouts the inner structure schematic diagram in the device of installation storehouse futilely.

Reference numerals: 1. a first motor; 2. a feed inlet; 3. a grinder; 4. a guide plate; 5. a side dam; 6. grinding blocks; 7. a discharging hopper; 8. a second motor; 9. a spiral feeder; 10. installing a bin; 11. a guide tube; 12. a fan; 13. a wind cavity; 14. an air outlet pipe; 15. a spray head; 16. a movable plate; 17. a rotating member; 18. an outer housing; 19. a cavity; 20. an inner housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-3, the flue gas denitration dry-spraying device provided by the present invention comprises a grinder 3, an installation bin 10, a spiral conveyor 9 and a fan 12;

the mounting bin 10 is provided with a feeding hole 2; the top of the mounting bin 10 is provided with a first motor 1, and a side baffle 5 is arranged inside the mounting bin 10; the grinder 3 is arranged inside the mounting bin 10; the output end of the first motor 1 is arranged on the top of the grinder 3, and the grinder 3 is provided with a guide plate 4 with a high middle part and a low periphery; a spiral grinding block 6 is arranged on the periphery of the grinder 3; an included angle is formed between the side baffle 5 and the grinding block 6; the included angle is gradually reduced from top to bottom; a discharging hopper 7 is arranged at the bottom of the grinder 3;

the spiral feeder 9 is arranged on the mounting bin 10, and the bottom of the blanking funnel 7 is communicated with the feeding end of the spiral feeder 9; a second motor 8 is arranged on one side of the spiral conveyor 9, and the second motor 8 drives the spiral conveyor 9 to rotate; a guide pipe 11 is arranged at the discharge end of the spiral conveyor 9; the guide pipe 11 is vertically arranged, and the bottom of the guide pipe 11 extends to the air cavity 13; the fan 12 is arranged at one side of the air cavity 13; a rotating part 17 is arranged inside the air cavity 13, a movable plate 16 is rotatably arranged on the rotating part 17, and a torsion spring is arranged on the rotating part 17; an air outlet pipe 14 is arranged at the output end of the air cavity 13; the fan 12 blows air towards the outlet duct 14.

In the utility model, the raw material and the catalyst powder are firstly put into the installation bin 10 through the feed inlet 2, then the first motor 1 is started, and the first motor 1 drives the grinder 3 to rotate; the grinder 3 is provided with a guide plate 4 with a high middle part and a low periphery; a spiral grinding block 6 is arranged on the periphery of the grinder 3; an included angle is formed between the side baffle 5 and the grinding block 6; the included angle is gradually reduced from top to bottom; the raw material and the catalyst powder can be uniformly mixed by grinding through the grinder 3, and simultaneously, the agglomerated raw material or catalyst can be crushed; the crushed raw materials and the catalyst powder are fully and uniformly mixed and are sent into a spiral feeder 9 through a feeding funnel 7; the second motor 8 is started to drive the spiral feeder 9 to rotate; the spiral feeder 9 rotates to enable the uniformly mixed powder to move towards the direction of the guide pipe 11; meanwhile, the uniformly mixed powder is compacted and falls down from the guide pipe 11, at the moment, the movable plate 16 is pushed open by the wind blown by the fan 12, and the movable plate 16 rotates around the rotating part 17 by different angles according to the wind power; the uniformly mixed powder is blown into the air outlet pipe 14 under the action of wind power and is finally sprayed out from the spray head 15; thereby carrying out denitration operation on the flue gas; the funnel-shaped middle air cavity 13 of the utility model can increase the air speed in the air cavity 13, which is beneficial to blowing out more powder; and the utility model discloses be provided with the torsional spring on the transfer piece 17, fly leaf 16 stores elastic potential energy around rotating 17 pivoted in-process torsional spring, and when fan 12 stopped, the elastic potential energy release of torsional spring storage, fly leaf 16 contacted, and it seals to go out tuber pipe 14, prevents that the powder from spilling, reduces extravagantly. The utility model discloses can go out raw materials and the even jetting of catalyst, can avoid the phenomenon of powder caking simultaneously.

In an alternative embodiment, the installation chamber 10 has a double-layer structure, and the installation chamber 10 is provided with an outer shell 18 at the outside and an inner shell 20 at the inside. A cavity 19 is formed between the outer shell 18 and the inner shell 20, and the cavity 19 is filled with sound absorption cotton.

The cavity 19 can be filled with sound absorbing cotton, and noise generated during operation can be reduced.

In an alternative embodiment, the outlet end of the air outlet pipe 14 is provided with a spray head 15, and the outer circumference of the spray head 15 is provided with an outer spiral.

It should be noted that spray pipes with different sizes can be installed through the external screw outside the spray head 15, so as to be compatible with different working conditions.

In an alternative embodiment, at least 6 jets may be provided on spray head 15.

In an alternative embodiment, at least two feed openings 2 are provided.

The raw material and the catalyst can be added separately.

In an alternative embodiment, a dust cover is mounted to the air intake end of fan 12.

The dust cover can reduce the mixing of dust into the raw material powder and the catalyst powder after the mixing by the fan 12.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A flue gas denitration dry spraying device is characterized by comprising a grinder (3), an installation bin (10), a spiral conveyor (9) and a fan (12);

the mounting bin (10) is provided with a feeding hole (2); the top of the installation bin (10) is provided with a first motor (1), and a side baffle (5) is arranged inside the installation bin (10); the grinder (3) is arranged inside the mounting bin (10); the output end of the first motor (1) is fixedly installed with the top of the grinder (3), and a guide plate (4) with the middle part high and the periphery low is arranged on the grinder (3); a spiral grinding block (6) is arranged on the periphery of the grinder (3); an included angle is formed between the side baffle (5) and the grinding block (6); the included angle is gradually reduced from top to bottom; a discharging hopper (7) is arranged at the bottom of the grinder (3);

the spiral material conveyor (9) is arranged on the mounting bin (10), and the bottom of the blanking funnel (7) is communicated with the feeding end of the spiral material conveyor (9); a second motor (8) is arranged on one side of the spiral conveyor (9), and the second motor (8) drives the spiral conveyor (9) to rotate; a guide pipe (11) is arranged at the discharge end of the spiral conveyor (9); the guide pipe (11) is vertically arranged, and the bottom of the guide pipe (11) extends to the air cavity (13); the fan (12) is arranged on one side of the air cavity (13); a rotating piece (17) is arranged in the air cavity (13), a movable plate (16) is rotatably arranged on the rotating piece (17), and a torsion spring is arranged on the rotating piece (17); an air outlet pipe (14) is arranged at the output end of the air cavity (13); the fan (12) blows air towards the air outlet pipe (14).

2. The flue gas denitration dry spraying device according to claim 1, wherein the installation bin (10) is of a double-layer structure, an outer shell (18) is arranged outside the installation bin (10), and an inner shell (20) is arranged inside the installation bin.

3. The flue gas denitration dry spraying device according to claim 1, wherein a cavity (19) is formed between the outer shell (18) and the inner shell (20), and sound absorption cotton is filled in the cavity (19).

4. The flue gas denitration dry spraying device of claim 1, wherein the output end of the air outlet pipe (14) is provided with a spray head (15), and the outer circumference of the spray head (15) is provided with an outer spiral.

5. The flue gas denitration dry spraying device according to claim 4, wherein at least 6 nozzles are arranged on the spray head (15).

6. The flue gas denitration dry spraying device according to claim 1, wherein at least two feed inlets (2) are provided.

7. The flue gas denitration dry spraying device of claim 1, wherein a dust cover is installed at the air inlet end of the fan (12).