CN213668687U - Novel denitration spray tower - Google Patents

Abstract

The utility model discloses a novel denitration spray tower, the side wall of the denitration tower is connected with an air inlet pipe, the air inlet pipe is provided with a first control valve, a power pump and a first flow regulator, a three-layer packing layer is arranged in the denitration tower, a spray pipe is arranged on the denitration tower at the lower part of the packing layer, the spray pipe is uniformly provided with an atomizing nozzle, the spray pipe is connected with an inlet pipe, and the inlet pipe is connected with a water storage tank; the denitration tower top is provided with the silk screen defroster, and the denitration tower top is connected with the blast pipe, is provided with the second flow regulator on the blast pipe. The NOx in the flue gas is convenient to treat and discharge.

Description

Novel denitration spray tower

Technical Field

The utility model relates to a spray technical field, concretely relates to novel denitration spray column.

Background

In order to prevent the environment pollution caused by excessive NOx generated after the coal in the boiler is combusted, the coal is subjected to denitration treatment. The method comprises denitration before combustion, denitration during combustion and denitration after combustion. Therefore, the novel denitration spray tower is provided, the acid making tail gas adopts hydrogen peroxide as a main denitration agent, ferrous sulfate as an activating agent, the acid making tail gas and NOx in the flue gas are subjected to oxidation reaction, dissolved and transferred into water to generate nitric acid, and the nitric acid is neutralized by sodium alkali and then discharged to a waste water station. The denitration tower adopts the mode that the empty tower that sprays combines together with the filler, promotes gas-liquid two-phase mass transfer efficiency furthest, improves denitration efficiency. The acid making tail gas enters a denitration tower after being desulfurized, flows through the three-layer spray packing layer once, contacts with denitration circulating liquid, washes NOx therein, flows through a tower top wire mesh demister, intercepts and separates most liquid drops, and is discharged into the atmosphere through a top wet electric demister.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel denitration spray column solves the difficult problem of handling of NOx in the flue gas.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a novel denitration spray tower comprises: the device comprises a denitration tower, an air inlet pipe, a first control valve, a power pump, a first flow regulator, a packing layer, a spray pipe, an atomizing spray head, an water inlet pipe, a water storage tank, a silk screen demister, an exhaust pipe and a second flow regulator;

the side wall of the denitration tower is connected with an air inlet pipe, a first control valve, a power pump and a first flow regulator are arranged on the air inlet pipe, a three-layer packing layer is arranged in the denitration tower, spray pipes are arranged on the denitration tower at the lower part of the packing layer, atomizing nozzles are uniformly arranged on the spray pipes, the spray pipes are connected with a water inlet pipe, and the water inlet pipe is connected with a water storage tank;

the denitration tower top is provided with the silk screen defroster, and the denitration tower top is connected with the blast pipe, is provided with the second flow regulator on the blast pipe.

Further, the method comprises the following steps of; the denitration tower is connected with a middle pipe, a water pump is arranged on the middle pipe, and the middle pipe is connected with a water storage tank;

the water storage tank is connected with a water inlet pipe, the lower part of the water storage tank is connected with a water outlet pipe, and a second control valve is arranged on the water outlet pipe.

Further, the method comprises the following steps of; the air inlet pipe is connected with the exhaust mesh pipe, and the lower wall of the exhaust mesh pipe is arranged with the opening.

Further, the method comprises the following steps of; be provided with the slide rail on the denitration tower lateral wall between the filler layer, be provided with the drive axle in the slide rail, the drive axle is connected with driving motor, and drive axle connecting band moves the pole, and the drive is provided with on moving the pole and scrapes the sieve, scrapes the sieve and the laminating setting of filler layer diapire.

Further, the method comprises the following steps of; a liquid level sensor is arranged in the water storage tank and connected with the controller.

Further, the method comprises the following steps of; the blast pipe is connected with the drying cabinet, sets up two-layer in the drying cabinet and places the net, places that the net is filled there is the drier, evenly opens on drying cabinet one side has the venthole.

Compared with the prior art, the utility model discloses an at least, have one of following beneficial effect:

1. after being desulfurized, the tail gas generated in acid making enters the denitration tower through the gas inlet pipe, and the tail gas enters the atomizing spray head of the spray pipe through the water inlet pipe for spraying in the water storage tank, so that NOx is conveniently washed; the filler layer is filled with filler, plays a certain adsorption role, and the sprayed gas is discharged by the exhaust pipe.

2. The water sprayed from the bottom of the denitration tower enters the water storage tank through the middle pipe to be collected, and the water which cannot be reused is discharged through the water discharge pipe.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a bottom view of the middle exhaust mesh pipe of the present invention.

In the figure: denitration tower (1), intake pipe (2), first control valve (3), power pump (4), first flow regulator (5), packing layer (6), shower (7), atomizer (8), inlet tube (9), storage water tank (10), silk screen defroster (11), blast pipe (12), second flow regulator (13), intermediate pipe (14), water pump (15), moisturizing pipe (16), drain pipe (17), second control valve (18), exhaust network management (19), slide rail (20), drive axle (21), driving motor (22), drive pole (23), scrape sieve (24), level sensor (25), controller (26), drying cabinet (27), place net (28).

Detailed Description

Fig. 1-2 are schematic views illustrating the present invention, and the embodiments and examples are further detailed below to make the objects, technical solutions and advantages of the present invention more clearly understood. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1:

a novel denitration spray tower comprises: the device comprises a denitration tower 1, an air inlet pipe 2, a first control valve 3, a power pump 4, a first flow regulator 5, a packing layer 6, a spray pipe 7, an atomization nozzle 8, a water inlet pipe 9, a water storage tank 10, a wire mesh demister 11, an exhaust pipe 12 and a second flow regulator 13;

the side wall of a denitration tower 1 is connected with an air inlet pipe 2, a first control valve 3, a power pump 4 and a first flow regulator 5 are arranged on the air inlet pipe 2, a three-layer packing layer 6 is arranged in the denitration tower 1, a spray pipe 7 is arranged on the denitration tower 1 below the packing layer 6, atomization nozzles 8 are uniformly arranged on the spray pipe 7, the spray pipe 7 is connected with an inlet pipe 9, and the inlet pipe 9 is connected with a water storage tank 10;

the top of the denitration tower 1 is provided with a wire mesh demister 11, the top of the denitration tower 1 is connected with an exhaust pipe 12, and the exhaust pipe 12 is provided with a second flow regulator 13; after being desulfurized, the tail gas generated in acid making enters the denitration tower 1 through the gas inlet pipe 2, and the tail gas enters the atomizing spray head 8 of the spray pipe 7 through the water inlet pipe 9 for spraying in the water storage tank 10, so that NOx is conveniently washed; the packing layer 6 is filled with packing to play a certain adsorption role, and the sprayed gas is discharged from the exhaust pipe 12.

Entering a denitration tower 1, and then entering a denitration tower 1,

example 2:

on the basis of the embodiment 1, the denitration tower 1 is connected with a middle pipe 14, the middle pipe 14 and the water inlet pipe 9 are both provided with a water pump 15, and the middle pipe 14 is connected with a water storage tank 10;

the water storage tank 10 is connected with a water replenishing pipe 16, the lower part of the water storage tank 10 is connected with a water discharging pipe 17, and the water discharging pipe 17 is provided with a second control valve 18; the water sprayed from the bottom of the denitration tower 1 enters the water storage tank 10 through the middle pipe 14 to be collected, and the water which cannot be reused is discharged through the water discharge pipe 17.

Example 3:

on the basis of the embodiment 1-2, the air inlet pipe 2 is connected with the exhaust mesh pipe 19, and the lower wall of the exhaust mesh pipe 19 is provided with an opening; the gas entering the gas inlet pipe 2 is discharged through the opening of the exhaust mesh pipe 19, so that the discharged gas is better sprayed.

Example 4:

on the basis of the embodiments 1 to 3, the side wall of the denitration tower 1 between the packing layers 6 is provided with a slide rail 20, a driving shaft 21 is arranged in the slide rail 20, the driving shaft 21 is connected with a driving motor 22, the driving shaft 21 is connected with a driving rod 23, the driving rod 23 is provided with a scraping sieve 24, and the scraping sieve 24 is attached to the bottom wall of the packing layer 6; the driving shaft 21 drives the driving rod 23 to move, the scraping sieve 24 on the driving rod 23 is driven to move, air is stirred, and water at the lower part of the packing layer 6 can be well scraped.

Example 5:

on the basis of the embodiments 1-4, a liquid level sensor 25 is arranged in the water storage tank 10, and the liquid level sensor 25 is connected with a controller 26; the liquid level sensor 25 is provided to monitor the liquid level of the water storage tank 10.

Example 6:

on the basis of the embodiments 1-5, the exhaust pipe 12 is connected with a drying box 27, two layers of placing nets 28 are arranged in the drying box 27, drying agents are filled between the placing nets 28, and air outlets are uniformly formed in one side of the drying box 27; the water exiting the exhaust pipe 12 passes through the desiccant positioned between the screens 28 to facilitate the discharge of the dried gas.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (6)

1. The utility model provides a novel denitration spray column which characterized in that: the method comprises the following steps: the denitration system comprises a denitration tower (1), an air inlet pipe (2), a first control valve (3), a power pump (4), a first flow regulator (5), a packing layer (6), a spray pipe (7), an atomizing spray head (8), an inlet pipe (9), a water storage tank (10), a wire mesh demister (11), an exhaust pipe (12) and a second flow regulator (13);

the side wall of the denitration tower (1) is connected with an air inlet pipe (2), the air inlet pipe (2) is provided with a first control valve (3), a power pump (4) and a first flow regulator (5), a three-layer packing layer (6) is arranged in the denitration tower (1), a spray pipe (7) is arranged on the denitration tower (1) at the lower part of the packing layer (6), atomizing nozzles (8) are uniformly arranged on the spray pipe (7), the spray pipe (7) is connected with an water inlet pipe (9), and the water inlet pipe (9) is connected with a water storage tank (10);

the top of the denitration tower (1) is provided with a wire mesh demister (11), the top of the denitration tower (1) is connected with an exhaust pipe (12), and a second flow regulator (13) is arranged on the exhaust pipe (12).

2. The novel denitration spray tower of claim 1, characterized in that: the denitration tower (1) is connected with a middle pipe (14), water pumps (15) are arranged on the middle pipe (14) and the water inlet pipe (9), and the middle pipe (14) is connected with a water storage tank (10);

the water storage tank (10) is connected with a water replenishing pipe (16), the lower part of the water storage tank (10) is connected with a water draining pipe (17), and a second control valve (18) is arranged on the water draining pipe (17).

3. The novel denitration spray tower of claim 1, characterized in that: the air inlet pipe (2) is connected with an exhaust mesh pipe (19), and the lower wall of the exhaust mesh pipe (19) is arranged with the opening.

4. The novel denitration spray tower of claim 1, characterized in that: be provided with slide rail (20) on denitration tower (1) lateral wall between packing layer (6), be provided with in slide rail (20) and drive axle (21), drive axle (21) and be connected with driving motor (22), drive axle (21) and drive pole (23), be provided with on drive pole (23) and scrape sieve (24), scrape sieve (24) and packing layer (6) diapire laminating setting.

5. The novel denitration spray tower of claim 1, characterized in that: a liquid level sensor (25) is arranged in the water storage tank (10), and the liquid level sensor (25) is connected with a controller (26).

6. The novel denitration spray tower of claim 1, characterized in that: the exhaust pipe (12) is connected with a drying box (27), two layers of placing nets (28) are arranged in the drying box (27), drying agents are filled between the placing nets (28), and air outlet holes are uniformly formed in one side of the drying box (27).

Images