CN210544397U

CN210544397U - Flue gas denitration device

Info

Publication number: CN210544397U
Application number: CN201921505658.2U
Authority: CN
Inventors: 任二龙; 张星; 韩国华; 陈建波
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-05-19
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a flue gas denitration device, the on-line screen storage device comprises a base, pretreatment tank and denitration tower are installed to the base upper end, pretreatment tank left side intercommunication has the air inlet, there are coarse filtration net and thin filter screen from a left side right fixed mounting in the pretreatment tank, pretreatment tank upper end just is located coarse filtration net and thin filter screen left side and all installs the air nozzle, pretreatment tank right side is passed through the connecting pipe and is connected in the denitration tower upper end, the cowling panel is installed to the upper end in the denitration tower. The utility model discloses at first filter the large granular material in the flue gas, avoid large granular material to filter the otter board to erode and cause the jam to catalyst board and active carbon, carry out denitration treatment in the filterable flue gas reentrants denitration tower, filter the otter board through active carbon at last and adsorb peculiar smell and toxic gas after discharge, catalyst board and active carbon filter the otter board and all peg graft between the boss, the catalyst board of being convenient for and active carbon filter the dismantlement change of otter board.

Description

Flue gas denitration device

Technical Field

The utility model relates to a flue gas processing apparatus technical field specifically is a flue gas denitration device.

Background

Nowadays, in order to improve the living environment of people and improve the living quality of people, China designates and executes various environmental protection policies and measures, wherein, in order to increase the emission intensity of controlling the polluted gas NOx, relevant standards are correspondingly released. As the power plant is a large NOx emission user, in order to reduce environmental pollution, denitration treatment is required when smoke emission is carried out. Current denitrification facility can not effectively intercept the large granule flying dust when carrying out denitration treatment, leads to the catalyst board to block up easily to inconvenient dismantlement is changed. Therefore, a flue gas denitration device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flue gas denitration device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a flue gas denitration device comprises a base, wherein a pretreatment box and a denitration tower are installed at the upper end of the base, the left side of the pretreatment box is communicated with an air inlet, a coarse filter screen and a fine filter screen are fixedly installed in the pretreatment box from left to right, air nozzles are installed at the upper end of the pretreatment box and on the left sides of the coarse filter screen and the fine filter screen, the right side of the pretreatment box is connected to the upper end of the denitration tower through a connecting pipe, a rectifying plate is installed at the upper end of the denitration tower, an ammonia gas spraying pipe is installed at the lower end of the rectifying plate in the denitration tower, ammonia gas nozzles are uniformly distributed at the lower end of the ammonia gas spraying pipe, two groups of bosses are fixedly connected to the inner wall of the denitration tower and below the ammonia gas nozzles, each group of bosses is provided with two bosses, a catalyst plate is inserted between one group, the catalyst board and the right side of the activated carbon filter screen plate are both fixedly connected with a sealing plate through bolts, and through holes matched with the sealing plate are formed in the right side of the denitration tower.

Preferably, the pretreatment tank bottom is located thick filter screen and thin filter screen left side homogeneous body intercommunication and has connect the ash bucket, connect the ash bucket lower extreme and install the valve.

Preferably, the ammonia gas spray pipe is connected to the ammonia gas storage tank through an ammonia gas delivery pipe, and an air pump is installed on the ammonia gas delivery pipe.

Preferably, an air outlet is formed at the bottom of the denitration tower.

Preferably, a handle is welded to the outer side of the sealing plate.

Preferably, the upper end of the outer side of the sealing plate is welded with a positioning plate, the upper end of the positioning plate is provided with a positioning hole, the right side of the denitration tower is welded with a threaded column for being in threaded connection with a positioning nut, and the positioning hole is matched with the threaded column.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses at first filter the large granular material in the flue gas, avoid large granular material to filter the otter board to erode and cause the jam to catalyst board and active carbon, carry out denitration treatment in the filterable flue gas reentrants denitration tower, filter the otter board through active carbon at last and adsorb peculiar smell and toxic gas after discharge, catalyst board and active carbon filter the otter board and all peg graft between the boss, the catalyst board of being convenient for and active carbon filter the dismantlement change of otter board. The air inlet is connected with a smoke source, so that smoke enters the pretreatment box, the smoke is filtered by a coarse filter screen and a fine filter screen, granular substances of the smoke are filtered, the air nozzle is connected with an external high-pressure air source, high-pressure air can be sprayed to the coarse filter screen and the fine filter screen, dust adhered to the coarse filter screen and the fine filter screen is blown down and falls into the dust receiving hopper, blockage caused by long-time use of the coarse filter screen and the fine filter screen is avoided, the filtered smoke enters the denitration tower through the connecting pipe, the smoke is uniformly distributed through the rectifying plate and is fully mixed with ammonia, the reaction rate is improved, the ammonia in the ammonia storage tank is conveyed to the ammonia spray pipe through the ammonia conveying pipe by working of the air pump and is finally sprayed out of the ammonia spray pipe, the smoke and the ammonia are fully mixed, then pass through the catalyst plate, and are subjected to denitration action under the action of, the flue gas after denitration treatment passes through the activated carbon filter screen plate to adsorb peculiar smell and toxic gas in the gas, and is finally discharged from the gas outlet.

Drawings

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

fig. 2 is the utility model discloses denitration tower right side structure schematic diagram.

In the figure: the device comprises a base 1, a pretreatment box 2, a denitration tower 3, an air inlet 4, a coarse filter screen 5, a fine filter screen 6, an air nozzle 7, a connecting pipe 8, a rectifying plate 9, an ammonia gas spraying pipe 10, an ammonia gas spraying nozzle 11, a boss 12, a catalyst plate 13, an activated carbon filter screen plate 14, a sealing plate 15, an ash receiving hopper 16, an ammonia gas conveying pipe 17, an ammonia gas storage tank 18, an air pump 19, an air outlet 20, a handle 21, a positioning plate 22, a positioning nut 23 and a threaded column 24.

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.

Referring to fig. 1-2, the present invention provides a technical solution: a flue gas denitration device comprises a base 1, wherein a pretreatment box 2 and a denitration tower 3 are installed at the upper end of the base 1, the left side of the pretreatment box 2 is communicated with an air inlet 4, a coarse filter screen 5 and a fine filter screen 6 are fixedly installed in the pretreatment box 2 from left to right, air nozzles 7 are installed at the upper end of the pretreatment box 2 and at the left sides of the coarse filter screen 5 and the fine filter screen 6, the right side of the pretreatment box 2 is connected to the upper end of the denitration tower 3 through a connecting pipe 8, a rectifying plate 9 is installed at the upper end of the denitration tower 3, an ammonia gas spray pipe 10 is installed at the lower end of the rectifying plate 9 in the denitration tower 3, ammonia gas nozzles 11 are uniformly distributed at the lower end of the ammonia gas spray pipe 10, two groups of bosses 12 are fixedly connected to the inner wall of the denitration tower 3 and below the ammonia gas nozzles 11, each group of bosses 12 are provided with, the lower extreme is a set of it has active carbon to filter otter board 14 to peg graft between boss 12, catalyst board 13 and active carbon filter otter board 14 right flank all through bolt fixedly connected with closing plate 15, denitration tower 3 right flank is seted up with closing plate 15 assorted through-hole.

Specifically, 2 bottoms of preliminary treatment case and being located coarse filtration net 5 and thin filter screen 6 left sides equal integrative intercommunication have and connect ash bucket 16, connect the 16 lower extremes of ash bucket and install the valve, outside high pressurized air source is connected to air nozzle 7, to coarse filtration net 5 and thin filter screen 6 injection high-pressure gas to blow down the dust on coarse filtration net 5 and the thin filter screen 6, fall into and connect ash bucket 16 in, open the valve, can discharge the dust.

Specifically, ammonia spray tube 10 is connected to ammonia storage jar 18 through ammonia conveyer pipe 17, install air pump 19 on the ammonia conveyer pipe 17, through air pump 19 work, carry the ammonia in ammonia storage jar 18 to ammonia spray tube 10 through ammonia conveyer pipe 17, at last from ammonia nozzle 11 blowout.

Specifically, the bottom of the denitration tower 3 is provided with an air outlet 20.

Specifically, the handle 21 is welded on the outer side of the sealing plate 15, so that the sealing plate 15 can be conveniently pushed and pulled, and the catalyst plate 13 or the activated carbon filter screen plate 14 can be further pushed and pulled.

Specifically, the upper end of the outer side of the sealing plate 15 is welded with a positioning plate 22, the upper end of the positioning plate 22 is provided with a positioning hole, the right side of the denitration tower 3 is welded with a threaded column 24 for being in threaded connection with a positioning nut 23, the positioning hole is matched with the threaded column 24, when the catalyst plate 13 or the activated carbon filter screen plate 14 is pushed into the denitration tower 3, a through hole in the positioning plate 22 penetrates through the threaded column 24, then the positioning nut 23 is screwed on the threaded column 24, the positioning plate 22 is limited, and the sealing plate 15, the catalyst plate 13 and the activated carbon filter screen plate 14 are limited.

Specifically, during use, the air inlet 4 is connected with a smoke source, so that smoke enters the pretreatment tank 2, the smoke is doubly filtered by the coarse filter screen 5 and the fine filter screen 6 to filter particulate matters of the smoke, the air nozzle 7 is connected with an external high-pressure air source and can spray high-pressure air to the coarse filter screen 5 and the fine filter screen 6, so that dust adhered to the coarse filter screen 5 and the fine filter screen 6 is blown down and falls into the dust receiving hopper 16 to avoid blockage caused by long-time use of the coarse filter screen 5 and the fine filter screen 6, the filtered smoke enters the denitration tower 3 through the connecting pipe 8, firstly passes through the rectifying plate 9 to be uniformly distributed, so that the smoke and ammonia are fully mixed, the reaction rate is improved, the work is carried out through the air pump 19, the ammonia in the ammonia storage tank 18 is conveyed to the ammonia spray pipe 10 through the conveying pipe 17, and finally is sprayed out from the ammonia nozzle 11, so, then through catalyst board 13, carry out the denitration effect under the effect of catalyst board 13, the flue gas after denitration treatment passes through active carbon filter screen board 14 and adsorbs peculiar smell and toxic gas in the gas, discharges from gas outlet 20 at last. The utility model discloses a at first filter the large granular material in the flue gas, avoid large granular material to filter otter board 13 and active carbon and erode and cause the jam to catalyst board and active carbon, carry out denitration treatment in the filterable flue gas reentrants denitration tower 3, discharge after filter otter board 14 adsorbs peculiar smell and toxic gas through active carbon at last, catalyst board 13 and active carbon filter otter board 14 all peg graft between boss 12, the dismantlement change of the filter otter board 14 of catalyst board 13 and active carbon of being convenient for.

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 flue gas denitrification facility, includes base (1), its characterized in that: pretreatment tank (2) and denitration tower (3) are installed to base (1) upper end, pretreatment tank (2) left side intercommunication has air inlet (4), there are coarse filtration net (5) and fine filtration net (6) from left hand right side fixed mounting in pretreatment tank (2), pretreatment tank (2) upper end just is located coarse filtration net (5) and fine filtration net (6) left side and all installs air nozzle (7), pretreatment tank (2) right side is passed through connecting pipe (8) and is connected in denitration tower (3) upper end, cowling panel (9) is installed to the upper end in denitration tower (3), ammonia spray tube (10) are installed to just being located cowling panel (9) lower extreme in denitration tower (3), ammonia spray tube (10) lower extreme evenly distributed has ammonia nozzle (11), denitration tower (3) inner wall just is located two sets of fixedly connected with bosss (12) below ammonia nozzle (11), every group boss (12) all are equipped with two, and the upper end is a set of peg graft between boss (12) and have catalyst board (13), and the lower extreme is a set of peg graft between boss (12) and have activated carbon to filter otter board (14), catalyst board (13) and activated carbon filter otter board (14) right flank all through bolt fixedly connected with closing plate (15), denitration tower (3) right flank seted up with closing plate (15) assorted through-hole.

2. The flue gas denitration device according to claim 1, characterized in that: the pretreatment tank (2) is provided with an ash receiving hopper (16) at the bottom and on the left of the coarse filter screen (5) and the fine filter screen (6), and a valve is arranged at the lower end of the ash receiving hopper (16).

3. The flue gas denitration device according to claim 1, characterized in that: the ammonia gas spray pipe (10) is connected to an ammonia gas storage tank (18) through an ammonia gas delivery pipe (17), and an air pump (19) is installed on the ammonia gas delivery pipe (17).

4. The flue gas denitration device according to claim 1, characterized in that: and an air outlet (20) is formed in the bottom of the denitration tower (3).

5. The flue gas denitration device according to claim 1, characterized in that: the outer side of the sealing plate (15) is welded with a handle (21).

6. The flue gas denitration device according to claim 1, characterized in that: the denitration tower is characterized in that a positioning plate (22) is welded at the upper end of the outer side of the sealing plate (15), a positioning hole is formed in the upper end of the positioning plate (22), a threaded column (24) for being in threaded connection with a positioning nut (23) is welded on the right side of the denitration tower (3), and the positioning hole is matched with the threaded column (24).