CN213556354U

CN213556354U - Low-temperature SCR flue gas denitration device

Info

Publication number: CN213556354U
Application number: CN202022528401.8U
Authority: CN
Inventors: 陈德军
Original assignee: Shandong Houru Environmental Protection Equipment Co ltd
Current assignee: Shandong Houru Environmental Protection Equipment Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-06-29
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a low temperature SCR flue gas denitration device relates to flue gas denitration technical field. The low-temperature SCR flue gas denitration device comprises an installation platform, wherein a connecting plate is welded on the outer surface of the top of the installation platform. The utility model discloses can accelerate the flue gas velocity of flow, accelerate redox reaction's speed, the setting of active carbon filter, the function of carrier has been played for the catalyst on the one hand, play catalyzed effect to the reaction, accelerate reaction rate, indirect improvement denitration rate, on the other hand can absorb the processing to remaining ammonia after the reaction finishes, avoid getting into on next step work along with the flue gas after the denitration, cause the problem of the pollution of ammonia, the setting of brush, can clear up the inner wall of denitration case, avoid the dust in the flue gas to be stained with and adhere to, the inner wall at denitration case is attached to a small amount of water that flue gas NOX and ammonia reacted and formed, cause the residue that flows down after being not convenient for clear up the denitration, provide good environment for next reaction.

Description

Low-temperature SCR flue gas denitration device

Technical Field

The utility model relates to a flue gas denitration technical field specifically is a low temperature SCR flue gas denitration device.

Background

Flue gas is one of the main emissions of thermal power plants, and is generated by burning combustible materials in a burner (i.e. a boiler), and because flue gas usually contains a large amount of nitrogen oxides, which can cause highly corrosive acid rain if directly discharged into the atmosphere, flue gas must be subjected to denitrification (i.e. denitration) treatment before being discharged, and the nitrogen oxides in flue gas and ammonia gas are subjected to chemical reaction at a certain temperature, so that the content of the nitrogen oxides is reduced. With the rapid development of science and technology, the flue gas denitration device is also technically improved.

At present partial SCR flue gas denitrification facility, because contain other solid matter in the flue gas usually, do not handle the dust of flue gas, NOX reacts with the ammonia as the oxidant, need a microthermal environment, but most SCR flue gas denitrification facility does not handle its cooling, lead to the high temperature, influence adsorption effect, NOX reacts with the ammonia as the oxidant and generates nitrogen and water, remaining solid matter is attached to the device inner wall with the little water that chemical reaction formed in the flue gas, be not convenient for follow-up clearance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low temperature SCR 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 low-temperature SCR flue gas denitration device comprises an installation platform, wherein a connecting plate is welded on the outer surface of the top of the installation platform, a water tank is welded on one side of the connecting plate, a flue gas pipe is welded on the outer wall of one side of the water tank and communicated with the inside of the flue gas pipe, a connecting piece is welded on the outer wall of the other side of the connecting plate, a fan is welded on the top of the connecting piece, an input end of the fan is fixedly provided with an air suction pipe, one end of the air suction pipe extends into the water tank, an output end of the fan is fixedly connected with an exhaust pipe, an installation box is welded on the top of the installation platform, a denitration box is arranged in the installation box, the installation box and the denitration box form a cavity, one end of the exhaust pipe penetrates through the installation box and the cavity and extends into the denitration box, a motor is welded on the, the inside fixed mounting of safety cover has the hydraulic stem, the free end of hydraulic stem passes safety cover and fixedly connected with diaphragm, the bottom fixed mounting of diaphragm has the puddler, the one end fixed mounting of puddler has the active carbon filter, the catalyst has been placed on the active carbon filter, the outer wall welded mounting of puddler has the puddler, the one end fixed mounting of puddler has the mounting disc, one side surface difference welded mounting of mounting box has into ammonia pipe and air release pipe, the one end of advancing ammonia pipe and air release pipe all passes mounting box and cavity and extends to the inside of denitration case, the top surface welded mounting of mounting box has the water injection pipe, the one end of water injection pipe passes the inside that the mounting box extended to the cavity.

Preferably, support piece is installed in the opposite side surface welding of connecting plate, and support piece's top welding installs the water pump, and the input fixed mounting of water pump has the drinking-water pipe, and the one end of drinking-water pipe is passed the install bin and is extended to in the cavity, and the outer wall fixed mounting of drinking-water pipe has the pipe that absorbs water, absorbs water and is provided with adjustable stop valve on the pipe, and the one end that absorbs water the pipe is passed install bin and cavity and is extended to the inside of denitration case, and the output fixed mounting of drinking-water pipe has the bleeder, and the one end of bleeder passes the connecting.

Preferably, the ammonia inlet pipe is provided with a check valve, and the gas release pipe is provided with an adjustable stop valve.

Preferably, the outer surface of the bottom of the water tank is fixedly provided with a liquid discharge pipe and communicated with the inside of the water tank, and one end of the liquid discharge pipe is provided with a knob cover in a threaded manner.

Preferably, one side fixed mounting of mounting disc has the brush, and one side of brush is laminated with the inner wall of denitration case mutually.

Preferably, the outer surface of the bottom of the mounting table is welded with supporting legs, and rubber pads are fixedly mounted at the bottoms of the supporting legs.

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

(1) the low-temperature SCR flue gas denitration device can react flue gas NOX with ammonia gas through the matching use of a water tank, a flue gas pipe, a fan, an air suction pipe, an exhaust pipe, a mounting box, a denitration box, a motor, a protective cover, a hydraulic rod, a transverse plate, a water suction pipe, a stirring rod, a stirring arm, a mounting disc and an activated carbon filter plate, accelerates the oxidation reduction reaction rate by mixing the flue gas NOX with the ammonia gas through the stirring arm, accelerates the flow rate, accelerates the oxidation reduction reaction rate, and indirectly improves the denitration rate, and can absorb the residual ammonia gas after the reaction is finished, thereby avoiding the problem of ammonia gas pollution caused by the fact that the flue gas after denitration enters the next work, and the arrangement of a brush can clean the inner wall of the denitration box, avoid the dust in the flue gas to be stained with and adhere to, flue gas NOX reacts a small amount of water that forms and is attached to the inner wall of denitration case with the ammonia, causes the residue that flows down after the denitration of being not convenient for clear up, provides good environment for next reaction.

(2) This low temperature SCR flue gas denitration device pours into cold water into through the water injection pipe in to the cavity, absorbs the heat in the flue gas, for its low temperature environment of building, avoids the too high subsequent absorption of influence of temperature, takes out and utilizes the hot water of cavity and the water that generates in the denitration case, pours into the water tank into, carries out simple flue gas dust removal to the flue gas and handles.

Drawings

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

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of part A of the present invention;

fig. 4 is an enlarged view of the part B of the present invention.

In the figure: the device comprises a mounting table 1, a connecting plate 2, a water tank 3, a flue gas pipe 4, a fan 5, an air suction pipe 6, an exhaust pipe 7, a mounting box 8, a denitration box 9, a motor 10, a protective cover 11, a hydraulic rod 12, a transverse plate 13, a water suction pipe 14, a stirring rod 15, a stirring arm 16, a mounting disc 17, an activated carbon filter plate 18, an ammonia inlet pipe 19, an air discharge pipe 20, a water pump 21, a water pumping pipe 22, a water discharge pipe 23 and a water injection pipe 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. 1-4, the present invention provides a technical solution: a low-temperature SCR flue gas denitration device comprises an installation platform 1, a connecting plate 2 is welded on the outer surface of the top of the installation platform 1, a water tank 3 is welded on one side of the connecting plate 2, a flue gas pipe 4 is welded on the outer wall of one side of the water tank 3 and communicated with the inside of the water tank, a connecting piece is welded on the outer wall of the other side of the connecting plate 2, a fan 5 is welded on the top of the connecting piece, an air suction pipe 6 is fixedly installed at the input end of the fan 5, one end of the air suction pipe 6 extends into the water tank 3, an exhaust pipe 7 is fixedly connected with the output end of the fan 5, an installation box 8 is welded on the top of the installation platform 1, a denitration box 9 is arranged inside the installation box 8, the installation box 8 and the denitration box 9 form a cavity, one end of the exhaust pipe 7 penetrates through the installation box, an output shaft of the motor 10 penetrates through the installation box 8 and the cavity through a coupler and extends to the inside of the denitration box 9, the protection cover 11 is fixedly installed, a hydraulic rod 12 is fixedly installed inside the protection cover 11, the free end of the hydraulic rod 12 penetrates through the protection cover 11 and is fixedly connected with a transverse plate 13, a stirring rod 15 is fixedly installed at the bottom of the transverse plate 13, an activated carbon filter plate 18 is fixedly installed at one end of the stirring rod 15, a catalyst is placed on the activated carbon filter plate 18, and the activated carbon filter plate 18 is arranged, so that the function of a carrier is achieved for the catalyst, the catalysis effect is achieved on the reaction, the reaction rate is accelerated, the denitration rate is indirectly improved, the residual ammonia after the reaction is finished can be absorbed on the other hand, the problem of ammonia pollution caused when flue gas after denitration enters the next step is avoided, and a stirring arm 16 is, the one end fixed mounting of stirring arm 16 has mounting disc 17, one side surface difference welded mounting of installing bin 8 has into ammonia pipe 19 and bleeder 20, the one end of advancing ammonia pipe 19 and bleeder 20 all passes installing bin 8 and cavity and extends to the inside of denitration case 9, the top surface welded mounting of installing bin 8 has water injection pipe 24, the inside that the installing bin 8 extended to the cavity is passed to the one end of water injection pipe 24, pour into cold water into to the cavity through water injection pipe 24, absorb the heat in the flue gas, build a microthermal environment for it, avoid the high temperature to influence subsequent absorption.

A support piece is welded on the outer surface of the other side of the connecting plate 2, a water pump 21 is welded on the top of the support piece, a water pumping pipe 22 is fixedly installed at the input end of the water pump 21, one end of the water pumping pipe 22 passes through the installation box 8 and extends into the cavity, a water suction pipe 14 is fixedly installed on the outer wall of the water pumping pipe 22, an adjustable stop valve is arranged on the water suction pipe 14, one end of the water suction pipe 14 passes through the installation box 8 and the cavity and extends into the denitration box 9, a water discharge pipe 23 is fixedly installed at the output end of the water pumping pipe 22, one end of the water discharge pipe 23 passes through the connecting plate 2 and extends into the water tank 3, a check valve is arranged on the ammonia inlet pipe 19, an adjustable stop valve is arranged on the gas discharge pipe 20, a liquid discharge pipe is fixedly installed on the outer surface of the, one side of the brush is attached to the inner wall of the denitration box 9, the start of the control motor 10 drives the rotation of the protective cover 11, the rotation of the protective cover 11 drives the hydraulic rod 12, the transverse plate 13 and the stirring rod 15 to rotate, the rotation of the stirring rod 15 drives the rotation of the stirring arm 16 on one side and drives the rotation of the activated carbon filter plate 18 on the other side, the rotation of the activated carbon filter plate 18 enables flue gas and ammonia gas to be better mixed with a catalyst, the inner wall of the denitration box 9 is cleaned through the mounting disc 17 by the rotation of the stirring arm 16, on one hand, the mixing treatment is carried out on the inner wall, the flow rate is accelerated, the speed of the oxidation reduction reaction is accelerated, on the other hand, the inner wall of the denitration box 9 can be cleaned, the dust in the flue gas is prevented from being attached, a small amount of water formed by the reaction of the flue gas NOX and the ammonia gas is attached to the, the bottom surface welding of mount table 1 has the supporting leg, and the bottom fixed mounting of supporting leg has the rubber pad.

The working principle is as follows: waste flue gas of a chimney is connected to one end of a flue gas pipe 4 through a pipeline, then simple dust-falling treatment is automatically carried out when the pipeline passes through water in a water tank 3, starting of a fan 5 and a motor 10 is controlled, the fan 5 adds the dust-falling flue gas into a denitration box 9 through starting of an air suction pipe 6 and an exhaust pipe 7, water is injected into a cavity through one end of a water injection pipe 24 and cools the flue gas, one end of an ammonia inlet pipe 19 is connected to an ammonia pipeline, ammonia is added into the denitration box 9 through the ammonia inlet pipe 19, reaction denitration is automatically carried out when the flue gas, the ammonia and a catalyst are mixed, meanwhile, the motor 10 is started to drive a protective cover 11 to rotate, the protective cover 11 rotates to drive a hydraulic rod 12, a transverse plate 13 and a stirring rod 15 to rotate, one side of the stirring rod 15 drives the other side of a stirring arm 16 to rotate to drive an active carbon filter plate 18 to rotate, and the flue gas, The ammonia gas and the catalyst are better mixed, the inner wall of the stirring arm 16 is cleaned through the mounting disc 17 by rotation, the water pump 21 is controlled to be started after the reaction is finished, the stop valve on the water suction pipe 14 is controlled to be adjusted to be closed, the water pump 21 is started to suck out the water injected into the cavity and the water generated by the reaction through the water suction pipe 22 and the water suction pipe 14, then the water is sucked into the water tank 3 through the water discharge pipe 23, the stop valve on the air discharge pipe 20 is controlled to be adjusted to be closed, and the denitrated gas is discharged.

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 low temperature SCR flue gas denitrification facility, includes mount table (1), its characterized in that: the denitration device is characterized in that a connecting plate (2) is welded on the outer surface of the top of the mounting table (1), a water tank (3) is welded on one side of the connecting plate (2), a flue gas pipe (4) is welded on the outer wall of one side of the water tank (3) and communicated with the inside of the water tank, a connecting piece is welded on the outer wall of the other side of the connecting plate (2), a fan (5) is welded on the top of the connecting piece, an air suction pipe (6) is fixedly installed at the input end of the fan (5), one end of the air suction pipe (6) extends into the water tank (3), an exhaust pipe (7) is fixedly connected with the output end of the fan (5), a mounting box (8) is welded on the top of the mounting table (1), a denitration box (9) is arranged inside the mounting box (8), the mounting box (8) and the denitration box (9) form a cavity, one end of the exhaust pipe, the top of the mounting box (8) is welded with a motor (10), an output shaft of the motor (10) penetrates through the mounting box (8) and the cavity through a coupler and extends to the inside of the denitration box (9), a protective cover (11) is fixedly mounted on the inner portion of the protective cover (11), a hydraulic rod (12) is fixedly mounted on the inner portion of the protective cover (11), the free end of the hydraulic rod (12) penetrates through the protective cover (11) and is fixedly connected with a transverse plate (13), a stirring rod (15) is fixedly mounted at the bottom of the transverse plate (13), an active carbon filter plate (18) is fixedly mounted at one end of the stirring rod (15), a catalyst is placed on the active carbon filter plate (18), a stirring arm (16) is welded on the outer wall of the stirring rod (15), a mounting disc (17) is fixedly mounted at one end of the stirring arm (16), an ammonia inlet pipe (19, the one end of advancing ammonia pipe (19) and gas release pipe (20) all passes install bin (8) and cavity and extends to the inside of denitration case (9), and the top surface welded mounting of install bin (8) has water injection pipe (24), and the one end of water injection pipe (24) is passed install bin (8) and is extended to the inside of cavity.

2. The low-temperature SCR flue gas denitration device of claim 1, wherein: support piece is installed in the opposite side surface welding of connecting plate (2), water pump (21) are installed in support piece's top welding, the input fixed mounting of water pump (21) has drinking-water pipe (22), install bin (8) are passed to the one end of drinking-water pipe (22) and extend to in the cavity, the outer wall fixed mounting of drinking-water pipe (22) has the pipe (14) that absorbs water, it is provided with adjustable stop valve on pipe (14) to absorb water, the one end of pipe (14) that absorbs water is passed install bin (8) and cavity and is extended to the inside of denitration case (9), the output fixed mounting of drinking-water pipe (22) has bleeder line (23), the one end of bleeder line (23) is passed connecting plate (2) and is extended to the inside of water tank.

3. The low-temperature SCR flue gas denitration device of claim 1, wherein: the ammonia inlet pipe (19) is provided with a check valve, and the gas discharge pipe (20) is provided with an adjustable stop valve.

4. The low-temperature SCR flue gas denitration device of claim 1, wherein: the bottom surface fixed surface of water tank (3) installs the casting tube and communicates with each other rather than inside, and the knob lid is installed to the one end screw thread of casting tube.

5. The low-temperature SCR flue gas denitration device of claim 1, wherein: one side fixed mounting of mounting disc (17) has the brush, and one side of brush is laminated mutually with the inner wall of denitration case (9).

6. The low-temperature SCR flue gas denitration device of claim 1, wherein: the outer surface of the bottom of the mounting table (1) is provided with supporting legs in a welding mode, and rubber pads are fixedly mounted at the bottoms of the supporting legs.