CN216909843U - Dust removal and denitration device - Google Patents

Abstract

The utility model discloses a dust removal and denitration device, comprising a reaction tower, a liquid discharge pipe connected to the reaction tower is arranged at the bottom, an air inlet is arranged at the lower part of the side, a connecting pipe is arranged at the side, and a second outlet is arranged at the bottom. The air outlet, the air inlet box is arranged at the air inlet at the lower part of the side of the reaction tower, the air inlet box is vertically provided with a wind deflector near the air inlet, the air outlet box is connected to the top of the air inlet box, and the top of the air outlet box is provided with a first air outlet , the filter bag is arranged at the connection between the air inlet box and the air outlet box, the air guide pipe is included outside the air inlet box and the air outlet box, the catalytic packing layer is arranged in the reaction tower, and the spray pipe is arranged in the reaction tower. Above the layer, a spray head is arranged at the bottom of the spray pipe, the dehydration layer is arranged at the top of the reaction tower, the demisting device is arranged above the dehydration layer, and the activated carbon layer is arranged above the demisting device. The integrated treatment of denitration and dust removal of the utility model ensures a good flue gas purification effect.

Description

A dedusting and denitrifying device

technical field

The utility model relates to the technical field of industrial environmental protection, in particular to a dust removal and denitration device.

Background technique

my country is a country with serious waste gas pollution. These polluted gases are one of the main reasons for the formation of acid rain and acid mist. Therefore, denitrification of flue gas is extremely important. Separate treatment will affect the denitrification effect, or separate treatment, but the area is too large, the operating cost is high, and the operation is complicated; at the same time, it is only a straight single-pass purification process, which affects the flue gas purification effect. We propose a denitration and dust removal device.

Utility model content

Therefore, in order to solve the above deficiencies, the present invention provides a denitration and denitrification device that integrates denitration and dust removal to ensure a good flue gas purification effect.

The utility model is realized in this way, and a dust removal and denitration device is constructed, which comprises the following steps:

A reaction tower, the bottom of the reaction tower is provided with a drain pipe connected to it, an air inlet is provided at the lower part of the side, a connecting pipe is provided at the side, and a second air outlet is provided at the bottom;

an air inlet box, the air inlet box is arranged at the air inlet at the lower part of the side of the reaction tower, and the air inlet box is vertically provided with an air guide plate that guides the flue gas to the lower part of the air inlet box at a position close to the air inlet;

an air outlet box, the air outlet box is connected to the top of the air inlet box, and the top of the air outlet box is provided with a first air outlet;

a filter bag, which is arranged at the connection between the air inlet box and the air outlet box;

an air guide pipe, the air guide pipe is included outside the air inlet box and the air outlet box;

a catalytic packing layer, the catalytic packing layer is arranged in the reaction tower;

a spray pipe, the spray pipe is arranged above the catalytic packing layer in the reaction tower, one end is connected to the reaction solution source through the connecting pipe, and the bottom of the spray pipe is provided with a spray head;

a dehydration layer, the dehydration layer is arranged at the top of the reaction tower;

Demisting device, the demisting device is arranged above the dehydration layer;

An activated carbon layer, the activated carbon layer is arranged above the demisting device.

Further, the bottom of the reaction tower is provided with a guide table inclined downward toward the liquid discharge pipe. The purpose of this setting is to allow the waste liquid to converge to the liquid discharge pipe along the guide table, so as to facilitate the discharge of the waste liquid from the bottom of the reaction tower.

Further, the side part of the reaction tower is provided with a maintenance inlet, the purpose of which is to facilitate the maintenance of the staff.

Further, the catalytic packing layer and the spray pipes are arranged in multiple layers, and the catalytic packing layers are arranged alternately. The purpose of this setting is that the spray pipes arranged in multiple stages are convenient to fully remove nitrogen oxides in the flue gas. , to improve the removal rate of nitrogen oxides.

Further, the fillers in the catalytic filler layer are spherical catalytic fillers. The purpose of this setting is that the spherical catalytic fillers increase the contact area between the reaction liquid and the flue gas. When the reaction liquid washes the catalytic filler layer, the alkaline solution flows from the spherical catalytic fillers. Flow through the gap of the catalytic filler to suppress the nitrogen oxides, so that the nitrogen oxides are fully absorbed.

Further, the filter bag is provided with an air duct connected to the air compressor. The purpose of this setting is that the air duct blows compressed air into the filter bag, causing the filter bag to deform and vibrate, shake off the dust, and facilitate filtering. Recycling of bags.

Further, a slag discharge box is arranged at the bottom of the air inlet box, and one end of the slag discharge box penetrates the reaction tower and extends out of the reaction tower. The slag discharge box is provided with a slag discharge screw connected to the output shaft of the driving device. The purpose of this setting is that the shaken dust falls into the slag discharge box, and the driving device drives the slag discharge screw to rotate to discharge the dust itself. The slag port is discharged for easy slag cleaning.

The utility model has the following advantages: the design of the utility model is reasonable, the filter bag is used to dedust the flue gas before the reaction, the activated carbon layer is used for the secondary dedusting of the flue gas after the reaction, and the dedusting effect of the device on the flue gas is improved. The reaction liquid is sprayed onto the catalytic packing layer, reacts quickly with the flue gas, and removes nitrogen oxides in the flue gas. drops, to ensure a good flue gas purification effect.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the partial enlarged schematic diagram A in Fig. 1;

In the figure: 1. Reaction tower; 2. Air inlet; 3. Outlet box; 4. Air deflector; 5. Air inlet box; 6. Slag discharge box; 7. Slag discharge screw; 8. Drive device; Pipe; 10, filter bag; 11, air duct; 12, first air outlet; 13, catalytic packing layer; 14, connecting pipe; 15, spray pipe; 16, nozzle; 17, maintenance inlet; 18, drain pipe ; 19, the guide table; 20, the dehydration layer; 21, the demisting device; 22, the activated carbon layer; 23, the spherical catalytic filler; 24, the second air outlet.

Detailed ways

The present utility model will be described in detail below with reference to accompanying drawings 1 to 2, and the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not All examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1:

The utility model provides a dust removal and denitrification device by improving, comprising:

The reaction tower 1, the bottom of the reaction tower 1 is provided with a drain pipe 18 connected with it, the lower part of the side is provided with an air inlet 2, the side is provided with a connecting pipe 14, and the bottom is provided with a second air outlet 24;

an air inlet box 5, the air inlet box 5 is arranged at the air inlet 2 at the lower part of the side of the reaction tower 1, and the air inlet box 5 is vertically provided with a wind deflector 4 that guides the flue gas to the lower part of the air inlet box 5 near the air inlet 2;

The air outlet box 3 is connected with the top of the air inlet box 5, and the top of the air outlet box 3 is provided with a first air outlet 12;

The filter bag 10, the filter bag 10 is arranged at the connection between the air inlet box 5 and the air outlet box 3;

an air duct 9, the air duct 9 is included outside the air inlet box 5 and the air outlet box 3;

A catalytic packing layer 13, the catalytic packing layer 13 is arranged in the reaction tower 1;

a spray pipe 15, the spray pipe 15 is arranged above the catalytic packing layer 13 in the reaction tower 1, one end is connected to the reaction solution source through the connecting pipe 14, and a spray head 16 is provided at the bottom of the spray pipe 15;

A dehydration layer 20, the dehydration layer 20 is arranged at the top of the reaction tower 1;

A mist removal device 21, the mist removal device 21 is arranged above the dehydration layer 20;

The activated carbon layer 22 is arranged above the demisting device 21 .

When in use, the flue gas is injected into the air intake box 5 from the air inlet 2, and the air deflector 4 in the air intake box 5 guides the flue gas to the lower part of the air intake box 5, and flows into the air outlet box 3 through the filter bag 10, and the filter bag 10 filters the flue gas. The dust in the flue gas is blocked from the outside, and the flue gas in the air outlet box 3 is guided from the first air outlet 12, guided by the air duct 9, and injected into the lower part of the reaction tower 1, and the flue gas flows from the lower part of the reaction tower 1 to the reaction tower 1. At the top of the tower 1, the spray pipe 15 is connected to the reaction liquid source, the nozzle 16 sprays the reaction liquid onto the catalytic packing layer 13, and the flue gas reacts with the reaction liquid in the catalytic packing layer 13 to remove nitrogen oxides, and the dehydration layer 20 will The moisture in the air after denitration is removed, the mist removal device 21 further separates the droplets carried by the flue gas, and the activated carbon layer 22 dedusts the reacted flue gas in two stages, and finally discharges it from the second air outlet 24, ensuring good Flue gas purification effect.

Example 2:

On the basis of Example 1, an air duct 11 connected to the air compressor is arranged in the filter bag 10, a slag discharge box 6 is arranged at the bottom of the air inlet box 5, and one end of the slag discharge box 6 penetrates the reaction tower 1 and extends out of the reaction tower. In addition, the slag discharge box 6 located outside the reaction tower is provided with a slag discharge port at the bottom, and a driving device 8 is installed on the side.

When in use, the air duct 11 blows the compressed air into the filter bag 10, causing the filter bag 10 to deform and vibrate, shake off the dust, and facilitate the regeneration and cleaning of the filter bag 10, and the shaken dust falls into the slag discharge box 6 , the driving device 8 drives the slag discharge screw 7 to rotate, and the dust is discharged from the slag discharge port, which is convenient for slag cleaning.

In addition to the above technical solutions, it can also be based on the basis of the above technical solutions:

1. At the bottom of the reaction tower 1, a guide table 19 inclined downward to the liquid discharge pipe 18 is arranged, and the reacted waste liquid converges to the liquid discharge pipe 18 along the guide table 19, which is convenient for the waste liquid to be discharged from the bottom of the reaction tower 1.

2. An overhaul inlet 17 is provided on the side of the reaction tower 1, which is convenient for the staff to overhaul.

3. The catalytic packing layer 13 and the spray pipe 15 are arranged in multiple layers, and the catalytic packing layers 13 are arranged alternately, which is convenient to fully remove nitrogen oxides in the flue gas and improve the removal rate of nitrogen oxides. The catalytic packing layer 13 is filled with It is a spherical catalytic filler 23, which increases the contact area between the reaction liquid and the flue gas. When the reaction liquid washes the catalytic filler layer 13, the lye flows through the gap of the spherical catalytic filler 23 to suppress the nitrogen oxides and make the nitrogen oxides Fully absorbed.

Claims (7)

1. The utility model provides a dust removal denitrification facility which characterized in that: comprises that

The reaction tower (1), the bottom of the reaction tower (1) is provided with a liquid discharge pipe (18) communicated with the reaction tower, the lower part of the side surface is provided with an air inlet (2), the side part is provided with a connecting pipe (14), and the bottom is provided with a second air outlet (24);

the reaction tower comprises an air inlet box (5), wherein the air inlet box (5) is arranged at an air inlet (2) at the lower part of the side surface of the reaction tower (1), and an air deflector (4) for guiding flue gas to the lower part of the air inlet box (5) is vertically arranged at the position, close to the air inlet (2), of the air inlet box (5);

the air outlet box (3) is communicated with the top of the air inlet box (5), and the top of the air outlet box (3) is provided with a first air outlet (12);

the filter bag (10), the said filter bag (10) is set up in the air inlet box (5) and connected with air outlet box (3);

the air guide pipe (9), the air guide pipe (9) is included outside the air inlet box (5) and the air outlet box (3);

the catalytic packing layer (13), the catalytic packing layer (13) is arranged in the reaction tower (1);

the spray pipe (15), the said spray pipe (15) is set up above the catalytic packing layer (13) in the reaction column (1), one end crosses the joint pipe (14) and connects with source of reaction solution, the bottom of the said spray pipe (15) has shower nozzles (16);

the dehydration layer (20), the dehydration layer (20) is arranged at the top in the reaction tower (1);

the demisting device (21), the demisting device (21) is arranged above the dewatering layer (20);

an activated carbon layer (22), wherein the activated carbon layer (22) is arranged above the demisting device (21).

2. The dust-removing and denitration device of claim 1, wherein: an air pipe (11) connected with an air compressor is arranged in the filter bag (10).

3. The dust-removing and denitration device of claim 1, wherein: air inlet case (5) bottom is provided with row's cinder box (6), arrange cinder box (6) one end and run through reaction tower (1) and stretch out outside reaction tower (1), be located the outer row's cinder box (6) bottom of reaction tower and be provided with row's cinder notch, drive arrangement (8) are installed to the lateral part, be provided with row's sediment screw rod (7) with drive arrangement (8) output shaft in row's cinder box (6).

4. The dust-removing and denitration device of claim 1, wherein: and a flow guide platform (19) which inclines downwards to the liquid discharge pipe (18) is arranged at the bottom of the reaction tower (1).

5. The dust-removing and denitration device according to claim 4, wherein: the side part of the reaction tower (1) is provided with a maintenance inlet (17).

6. The dust-removing and denitration device of claim 1, wherein: the catalytic filler layers (13) and the spray pipes (15) are arranged in a multilayer mode, and the catalytic filler layers (13) are arranged in a staggered mode.

7. The dust-removing and denitration device of claim 6, wherein: the filler in the catalytic filler layer (13) is a spherical catalytic filler (23).

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