CN213643440U

CN213643440U - Dust removal denitration thermal analysis integrated device

Info

Publication number: CN213643440U
Application number: CN202022483621.3U
Authority: CN
Inventors: 吕文彬; 盛大海; 文章; 尹世杰
Original assignee: Anhui Fangxin Lihua Environmental Protection Technology Co ltd; Tongxing Environmental Protection Technology Co ltd
Current assignee: Anhui Fangxin Lihua Environmental Protection Technology Co ltd; Tongxing Environmental Protection Technology Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-07-09
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a dust removal denitration thermal analysis integrated device, including the dust remover, the denitration reactor, hot-blast injection apparatus and ammonia injection apparatus, the lower part at the denitration reactor is installed to the dust remover, the side of dust remover sets up the inlet tube, the top of middle part box sets up the upper portion box, the side trompil of upper portion box and the lower part intercommunication of denitration reactor, middle part box side is connected with admission line, the spoiler is installed facing to the flue gas face to the middle part box, hot-blast injection apparatus and ammonia injection apparatus are installed in the heating ammonia spraying layer, hot-blast injection apparatus is located ammonia injection apparatus's lower part. The utility model discloses a dust collector and the vertical arrangement of denitrification facility are overall structure, and device area is little, and extensive applicability can realize dust removal denitration synchronous processing according to the number of the flue gas operating mode selection unit of equidimension not, has improved flue gas dust removal denitration efficiency, has prolonged the life of denitration catalyst, can realize the ultralow emission of oxynitrides and dust.

Description

Dust removal denitration thermal analysis integrated device

Technical Field

The utility model relates to a technical field is handled to the flue gas, specifically is a dust removal denitration thermal analysis integrated device.

Background

Frequent haze weather seriously harms the health of people, and NOx is one of main components in haze and mainly comes from the emission of fuel combustion flue gas of factories, which is particularly obvious in the industries of steel and thermal power generation. Nitrogen oxides (NOx) are one of main components of air pollution, 70% of the emission of the nitrogen oxides in China comes from direct combustion of coal, and the power industry is a coal-fired household in China, so that a thermal power plant is one of main sources of NO and emission. In recent years, the emission of nitrogen oxides in China is rapidly increased along with the rapid increase of energy consumption.

The national development flue gas emission detection work has been vigorously carried out in these years, a plurality of air pollution prevention and control working schemes are provided, the emission standard of flue gas pollutants is improved again and again, the treatment requirement on waste gas is more and more strict, and the waste gas to be treated and discharged is dedusted by dedusting equipment and then is input into denitration equipment through a pipeline for denitration treatment. The dust removal equipment and the denitration equipment are separately arranged, so that the investment is large, the requirements on the site are higher, the site required by the newly-built dust removal and denitration equipment in some old plant areas can not be met, and the energy waste can be caused by the other party. Therefore, it is necessary to develop a dust removal and denitration device with small floor area and good treatment effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dust removal denitration thermal analysis integrated device has simple structure, and the small investment, the operation maintenance cost is low, and area advantage such as little can detach the dust granule and the nitrogen oxide in the flue gas simultaneously, and dust removal denitration is efficient, can adapt to more site requirements, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

a dedusting denitration thermal desorption integrated device comprises a deduster, a denitration reactor, a hot air injection device and an ammonia gas injection device, wherein the deduster is installed at the lower part of the denitration reactor, an inlet pipeline is arranged on the side surface of the deduster, and an outlet pipeline is installed at the top of the denitration reactor;

the dust remover comprises an ash bucket, a middle box body, a spoiler, an upper box body, an access door and a blockage removing device, wherein the upper box body is arranged at the top of the middle box body, an opening in the side surface of the upper box body is communicated with the lower part of the denitration reactor, the side surface of the middle box body is connected with an air inlet pipeline, the spoiler is arranged on the middle box body facing the flue gas surface, the ash bucket is arranged at the bottom of the middle box body, and the access door and the blockage removing device are arranged on the side surface of the ash bucket;

the denitration reactor has arranged homogenization module layer, heating ammonia spraying layer, catalyst in proper order from the bottom up and has arranged layer and catalyst reservation layer, install hot-blast injection apparatus and ammonia injection apparatus in the heating ammonia spraying layer, hot-blast injection apparatus is located ammonia injection apparatus's lower part.

Further, the catalyst arrangement layer is mounted with a catalyst module.

Further, the blockage removing device is one of a rapping motor, a fluidization plate and an air cannon.

Further, the number of catalyst arrangement layers in each denitration reactor is not limited to two.

Furthermore, an inlet flue gas valve is arranged at the joint of the dust remover and the inlet pipeline, and an outlet flue gas valve is arranged at the joint of the denitration reactor and the outlet pipeline.

Furthermore, one denitration reactor and two dust removers communicate and constitute a dust removal denitration unit, and inlet pipeline and outlet pipeline can be connected with a plurality of dust removal denitration units simultaneously, all are provided with thermal-insulated heat preservation between every dust remover and the adjacent bin of denitration reactor.

Further, the homogenization module layer in the denitration reactor is arranged above the two dust remover flue gas collecting bins.

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

1. this dust removal denitration thermal analysis integrated device directly communicates dust remover and denitration reactor together, and the flue gas is successively through dust remover and denitration reactor, and denitration reactor is located dust remover upper portion, and rational in infrastructure is compact, and the operation maintenance cost is low, and equipment area is little, and the treatment effect is good.

2. This dust removal denitration thermal analysis integrated device removes dust earlier the back denitration, and the clean flue gas after the dust removal gets into the catalyst, can effectively avoid catalyst poisoning inefficacy problem like this, improves the sulfur resistance and the life of catalyst through hot-blast injection apparatus simultaneously.

3. This dust removal denitration thermal analysis integrated device can rationally set up denitration dust removal unit quantity according to the flue gas volume size that will handle, arranges in a flexible way, is suitable for the processing requirement in different flue gas volumes and place.

4. This thermal analysis integrated device of dust removal denitration, denitration reactor lower part is provided with the homogenization module for the flow field velocity distribution deviation that gets into the catalyst layer reduces, also enables ammonia and flue gas simultaneously and mixes more fully, improves denitration reaction's efficiency.

5. This dust removal denitration thermal analysis integrated device, the catalyst reservation layer on denitration reactor upper portion can use a certain age at the catalyst, and after catalyst efficiency descends, at the new catalyst module of reservation layer installation, when satisfying flue gas denitration's demand, new and old catalyst uses together, and furthest practices thrift the fund input.

Drawings

Fig. 1 is a front view of an embodiment of the present invention;

fig. 2 is a left side view of the embodiment of the present invention.

In the figure: 1. a dust remover; 11. an ash hopper; 12. a middle box body; 13. a spoiler; 14. an upper box body; 15. an access door; 16. clearing the blockage; 2. a denitration reactor; 21. homogenizing the module layer; 22. heating the ammonia spraying layer; 23. a catalyst arrangement layer; 24. a catalyst reserve layer; 3. a hot air injection device; 4. an ammonia gas injection device; 5. an inlet duct; 51. an inlet flue gas valve; 6. an outlet conduit; 61. an outlet flue gas valve.

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, a dust removal denitration thermal analysis integrated device, including dust remover 1, denitration reactor 2, hot-blast injection apparatus 3 and ammonia injection apparatus 4, dust remover 1 installs in the lower part of denitration reactor 2, the side of dust remover 1 sets up inlet pipe 5, outlet pipe 6 is installed at the top of denitration reactor 2, the junction of dust remover 1 and inlet pipe 5 sets up import flue gas valve 51, denitration reactor 2 sets up outlet flue gas valve 61 with the junction of outlet pipe 6. The middle box body 12 of the dust remover 1 is connected with the inlet pipeline 5 through the inlet flue gas valve 51, the inside of the middle box body 12 is close to the air inlet, and flue gas enters the middle box body 12 of the dust remover 1 from the inlet pipeline 5 through the regulation of the inlet flue gas valve 51. When a plurality of dust removal denitration units handle the flue gas simultaneously, the accessible is adjusted import flue gas valve 51 and is exported flue gas valve 61 and guarantee to get into the amount of wind evenly distributed of every dust removal denitration unit. The accessible is closed import flue gas valve 51 and export flue gas valve 61 and is realized two dust removers 1 and the dust removal denitration unit that single denitration reactor 2 is constituteed and other dust removal denitration units's isolated, realizes changing the change of dust remover 1 internal component and 2 internal catalyst of denitration reactor off-line.

Dust remover 1 includes ash bucket 11, middle part box 12, spoiler 13 and upper portion box 14, access door 15 and clear stifled device 16, the top of middle part box 12 sets up upper portion box 14, the height of middle part box 12 can be adjusted according to the filter area of dust remover, the side trompil of upper portion box 14 and denitration reactor 2's lower part intercommunication, middle part box 12 side is connected with inlet pipe 5, spoiler 13 is installed facing to the flue gas face to middle part box 12, be used for changing the gas flow direction, protect inside filter bag, avoid the flue gas to erode the filter bag, the life of extension filter bag. The bottom of the middle box body 12 is provided with a dust hopper 11, and the side surface of the dust hopper 11 is provided with an access door 15 and a blockage removing device 16.

The great dust particle in the flue gas directly falls into ash bucket 11, and another part adheres to the filter bag surface, falls into ash bucket 11 under the effect of jetting system in, and the flue gas of detaching the dust particle gets into denitration reactor 2 through upper portion box 14 inside, through the homogenization module layer 21 that denitration reactor 2 bottoms set up earlier, the flue gas is flow field velocity distribution deviation reduces under its effect, and flow velocity distribution is even. The homogenizing module layer 21 in the denitration reactor 2 is arranged above the flue gas collecting chambers of the two dust collectors 1, then is contacted and mixed with ammonia gas in the flue gas collecting chambers through the heating ammonia spraying layer 22, the mixed flue gas is introduced into the upper catalyst arrangement layer 23, the denitration reaction is completed under the action of the catalyst, nitrogen oxides in the flue gas are removed, and the clean flue gas enters the outlet pipeline 6 through the outlet flue gas valve 61 and is discharged.

Denitration reactor 2 from the bottom up has arranged homogenization module layer 21 in proper order, ammonia layer 22 is spouted in the heating, layer 23 and catalyst reservation layer 24 are arranged to the catalyst, whether the catalyst reservation layer 24 of every denitration reactor 2 can select to set up according to the condition, install hot-blast injection apparatus 3 and ammonia injection apparatus 4 in the ammonia layer 22 is spouted in the heating, hot-blast injection apparatus 3 is located ammonia injection apparatus 4's lower part, whether hot-blast injection apparatus 3 can select to set up according to the flue gas temperature of specific operating mode, promote denitration reactor 2's inside temperature, can regularly open and carry out online thermal analysis to the catalyst, improve the sulfur resistance and the life of catalyst.

The catalyst arrangement layer 23 is mounted with a catalyst module. The blockage removing device 16 is one of a rapping motor, a fluidization plate and an air cannon, and achieves the purpose of blockage removal. The number of catalyst arrangement layers 23 in each denitration reactor 2 is not limited to two, but is provided as at least one.

A denitration reactor 2 constitutes a dust removal denitration unit with two dust remover 1 intercommunications, can be according to the flue gas volume reasonable arrangement denitration dust removal unit quantity that will handle, inlet pipe 5 and outlet pipe 6 can be connected with a plurality of dust removal denitration units simultaneously, and quantity is not limited to one, all is provided with thermal-insulated heat preservation between every dust remover 1 and denitration reactor 2's adjacent bin, prevents that heat transfer from to the bin of off-line, realizes the off-line and overhauls the function.

Flue gas gets into dust remover 1 through the regulation of import flue gas valve 51 from inlet pipe 5, detach the dust particulate matter in the flue gas in middle part box 12, the dust of great granule directly falls into ash bucket 11, partly dust attached to on filter bag surface falls into ash bucket 11 under the effect of jetting system in, the flue gas of detaching dust particulate matter gets into denitration reactor 2 through upper portion box 14, earlier through the homogenization module layer 21 of arranging in denitration reactor 2, make the flow field velocity distribution deviation of flue gas reduce, also enable ammonia and flue gas mixture more fully simultaneously. The ammonia gas injection device 4 injects ammonia gas inside the denitration reactor 2, flue gas and ammonia gas are introduced into the catalyst arrangement layer 23 on the upper part after being fully mixed, the denitration reaction is completed under the action of the catalyst, nitrogen oxides in the flue gas are removed, and the clean flue gas enters the outlet pipeline 6 through the outlet flue gas valve 61 and is discharged. The hot air injection device 3 can be periodically started to carry out on-line thermal analysis on the catalyst, so that the sulfur resistance of the catalyst is improved, and the service life of the catalyst is prolonged.

In summary, the following steps: this thermal analysis integrated device of dust removal denitration, with dust remover 1 and denitration reactor 2 lug connection together, the flue gas removes dust through dust remover 1 earlier, directly gets into denitration reactor 2 and carries out the denitration reaction after that, discharges clean flue gas at last. The utility model discloses vertical arrangement dust remover 1 and denitration reactor 2 have reduced the occupation of land space, and split type dust removal denitration equipment relatively, investment cost also significantly reduces.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 dust removal denitration thermal desorption integrated device is characterized by comprising a dust remover (1), a denitration reactor (2), a hot air injection device (3) and an ammonia injection device (4), wherein the dust remover (1) is installed at the lower part of the denitration reactor (2), an inlet pipeline (5) is arranged on the side surface of the dust remover (1), and an outlet pipeline (6) is installed at the top of the denitration reactor (2);

the dust remover (1) comprises an ash bucket (11), a middle box body (12), a spoiler (13), an upper box body (14), an access door (15) and a blockage removing device (16), wherein the upper box body (14) is arranged at the top of the middle box body (12), a side opening of the upper box body (14) is communicated with the lower part of the denitration reactor (2), the side of the middle box body (12) is connected with an inlet pipeline (5), the spoiler (13) is arranged on the side, facing the flue gas, of the middle box body (12), the ash bucket (11) is arranged at the bottom of the middle box body (12), and the access door (15) and the blockage removing device (16) are arranged on the side of the ash bucket (11);

denitration reactor (2) from the bottom up has arranged homogenization module layer (21), heating and has spouted ammonia layer (22), catalyst and has arranged layer (23) and catalyst and reserve layer (24), install hot-blast injection apparatus (3) and ammonia injection apparatus (4) in heating and spouting ammonia layer (22), hot-blast injection apparatus (3) are located the lower part of ammonia injection apparatus (4).

2. The integrated dedusting and denitrating thermal desorption apparatus according to claim 1, wherein the catalyst arrangement layer (23) is provided with a catalyst module.

3. The integrated dedusting and denitration thermal desorption device as set forth in claim 1, wherein the blockage removing device (16) is one of a rapping motor, a fluidization plate and an air gun.

4. The integrated dust-removing and denitration thermal desorption apparatus according to claim 1, wherein the number of catalyst disposition layers (23) in each denitration reactor (2) is not limited to two.

5. The integrated dedusting denitration thermal desorption device according to claim 1, wherein an inlet flue gas valve (51) is arranged at the joint of the deduster (1) and the inlet pipe (5), and an outlet flue gas valve (61) is arranged at the joint of the denitration reactor (2) and the outlet pipe (6).

6. The integrated dedusting and denitration thermal desorption device according to claim 1, wherein one denitration reactor (2) is communicated with two dedusters (1) to form a dedusting and denitration unit, the inlet pipeline (5) and the outlet pipeline (6) can be simultaneously connected with a plurality of dedusting and denitration units, and a heat insulation layer is arranged between each deduster (1) and the adjacent bin of the denitration reactor (2).

7. The integrated dedusting and denitrating thermal desorption apparatus according to claim 1, wherein the homogenizing module layer (21) in the denitration reactor (2) is above the two flue gas collecting chambers of the dedusters (1).