CN218924266U

CN218924266U - SCR denitrification facility for thermal power plant, iron and steel plant

Info

Publication number: CN218924266U
Application number: CN202222534261.4U
Authority: CN
Inventors: 李孟国; 李君毅
Original assignee: Shandong Junyi Environmental Technology Co ltd
Current assignee: Shandong Junyi Environmental Technology Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-04-28
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses an SCR denitration device for a thermal power plant and a steel plant, which relates to the technical field of denitration and comprises a base, wherein a leg column is fixedly connected to the outer wall of the base, a supporting plate is fixedly connected to the outer wall of the leg column, a filter box is fixedly connected to the outer wall of the supporting plate, a motor is fixedly connected to the outer wall of the filter box, a filter fan is fixedly connected to an output shaft of the motor through a coupling, a first gas collecting tube is fixedly connected to one side of the filter box, an air pump is fixedly connected to one side of the filter box, a second gas collecting tube is fixedly connected to the output end of the air pump, a denitration box is fixedly connected to the outer wall of the base, a hinge is connected to an outer wall bearing of the filter box, and a switch door is fixedly connected to one side of the hinge. The utility model achieves the effect that the device is convenient for filtering the gas, the motor drives the filter fan to rotate for preliminary filtering the gas, and the activated carbon adsorption net can be taken out for cleaning through the cleaning door.

Description

SCR denitrification facility for thermal power plant, iron and steel plant

Technical Field

The utility model relates to the technical field of denitration, in particular to an SCR denitration device for thermal power plants and steel plants.

Background

Denitration is a process of removing nitrogen oxides from combustion flue gas, and the importance of preventing environmental pollution has been sharply proposed as a worldwide problem. The world's mainstream processes are divided into SCR and SNCR. The two processes are not very different except that the reaction temperature is lower than SNCR due to the use of a catalyst by SCR, but if the investment of SCR is at least several times, even 10 times, that of SNCR from the two viewpoints of construction cost and operation cost, the denitration is divided into pre-combustion denitration, combustion process denitration and post-combustion denitration.

For example, the Chinese patent publication No. CN208990570U discloses the following technical scheme: the utility model discloses an SCR denitration device, which comprises a solution preparation unit and an injection denitration unit, wherein the solution preparation unit comprises a preparation tank, a feed inlet of the preparation tank is connected with a feeding mechanism, a discharge outlet of the preparation tank is communicated with a storage tank through a first pipeline, the injection denitration unit comprises a static mixer, the storage tank is communicated with the static mixer through a second pipeline, a solution injection assembly is arranged on the static mixer, and the static mixer is communicated with an SCR reactor through a flue. The SCR denitration device has the advantages of reasonable structure, simple and convenient installation, good stability, high reliability, low operation cost and small occupied space, and can effectively reduce the emission of nitrogen oxides contained in tail gas of a strip steel continuous heat treatment production line and reduce the emission of atmospheric pollutants.

The following problems exist in the prior art:

1. most SCR denitration devices used in thermal power plants and steel plants in the prior art are inconvenient to filter gas needing denitration in the use process, affect denitration effect and efficiency, and cannot meet the requirements of users;

2. most of SCR denitration devices used in thermal power plants and steel plants in the prior art are inconvenient to clean the device in the use process, and the use effect of the device is reduced to a certain extent.

Disclosure of Invention

The utility model provides an SCR denitration device for a thermal power plant and a steel plant, which aims to solve the problems in the background technology.

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

the SCR denitration device for the thermal power plant and the steel plant comprises a base, wherein the outer wall of the base is fixedly connected with a leg column, and the outer wall of the leg column is fixedly connected with a supporting plate;

the outer wall of the supporting plate is fixedly connected with a filter box, the outer wall of the filter box is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a filter fan through a coupling, one side of the filter box is fixedly connected with a first gas collecting tube, and one side of the filter box is fixedly connected with an air pump;

the output of air pump fixedly connected with second gas collecting tube, the outer wall fixedly connected with denitration case of base, the outer wall bearing of rose box is connected with the loose-leaf, one side fixedly connected with switch door of loose-leaf.

The technical scheme of the utility model is further improved as follows: one side fixedly connected with ware of striking sparks of denitration case, one side fixedly connected with reactant spray tube of denitration case, the outer wall fixedly connected with outlet duct of denitration case, the inner wall seted up the draw-in groove, the inner wall joint of draw-in groove has the fixture block, the outer wall fixedly connected with active carbon adsorption net of fixture block, the outer wall bearing of outlet duct is connected with the clearance door, the one end fixedly connected with collection miscellaneous case of outlet duct.

By adopting the technical scheme, the structure in the scheme can enable the device to have the effect of being convenient for cleaning.

The technical scheme of the utility model is further improved as follows: the outer wall fixedly connected with air pump of backup pad, just the one end fixedly connected with denitration case of second gas collecting channel.

By adopting the technical scheme, the structure in the scheme can enable the device to conveniently inject gas into the denitration box for treatment.

The technical scheme of the utility model is further improved as follows: the number of the firearms is two, and the firearms are positioned at two sides of the denitration box.

By adopting the technical scheme, the structure in the scheme can fully heat the gas.

The technical scheme of the utility model is further improved as follows: the clamping blocks are matched with the clamping grooves, and the diameter of the activated carbon adsorption net is equal to the inner diameter of one side of the air outlet pipe.

By adopting the technical scheme, the structure in the scheme can enable the device to be convenient to detach.

The technical scheme of the utility model is further improved as follows: the switch door is located the positive place ahead of rose box, just the switch door is along the axis mutual symmetry of rose box.

By adopting the technical scheme, the structure in the scheme can facilitate the cleaning of the device.

The technical scheme of the utility model is further improved as follows: the length of the activated carbon adsorption net and the clamping block is smaller than the length of the cleaning door.

By adopting the technical scheme, the structure in the scheme can enable the device to be taken out for cleaning.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. the utility model provides an SCR denitration device for a thermal power plant and a steel plant, which adopts a base, leg columns, a supporting plate, a filter box, a motor, a filter fan, a first gas collecting pipe, an air pump, a second gas collecting pipe, a denitration box, a hinge and a switch door to be mutually matched, so that the effect of conveniently filtering gas by the device is achieved, the gas generated in production is extracted by the air pump, the gas is preliminarily filtered by driving the filter fan to rotate by the motor, part of impurities in the gas can be removed, and the use effect of the device is improved to a certain extent.

2. The utility model provides an SCR denitration device for thermal power plants and steel plants, which adopts a fire maker, a reactant spray pipe, an air outlet pipe, a clamping groove, a clamping block, an active carbon adsorption net, a cleaning door and a impurity collection box to be matched with each other, so that the effect of convenient cleaning is achieved, the gas after denitration can be further filtered and adsorbed through the use of the active carbon adsorption net, and the active carbon adsorption net can be taken out and cleaned through the use of the cleaning door, so that the use requirement of people can be met.

Drawings

FIG. 1 is a front cross-sectional view of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is an enlarged view of FIG. 1 at A in accordance with the present utility model;

fig. 4 is a perspective view showing a connection structure of the activated carbon adsorption net of the present utility model.

In the figure: 1. a base; 2. a leg post; 3. a support plate; 4. a filter box; 5. a motor; 6. a filter fan; 7. a first gas collecting tube; 8. an air pump; 9. a second gas collecting tube; 10. a denitration box; 11. a loose leaf; 12. opening and closing a door; 13. a igniter; 14. a reactant nozzle; 15. an air outlet pipe; 16. a clamping groove; 17. a clamping block; 18. an activated carbon adsorption net; 19. cleaning a door; 20. and a impurity collection box.

Detailed Description

The utility model is further illustrated by the following examples:

example 1

As shown in fig. 1-4, the utility model provides an SCR denitration device for a thermal power plant and a steel plant, which comprises a base 1, wherein the outer wall of the base 1 is fixedly connected with a leg column 2, and the outer wall of the leg column 2 is fixedly connected with a supporting plate 3;

the outer wall of the supporting plate 3 is fixedly connected with a filter box 4, the outer wall of the filter box 4 is fixedly connected with a motor 5, an output shaft of the motor 5 is fixedly connected with a filter fan 6 through a coupling, one side of the filter box 4 is fixedly connected with a first gas collecting tube 7, and one side of the filter box 4 is fixedly connected with an air pump 8;

the output of air pump 8 fixedly connected with second gas-collecting tube 9, the outer wall fixedly connected with denitration case 10 of base 1, the outer wall bearing of rose box 4 is connected with loose-leaf 11, one side fixedly connected with switch door 12 of loose-leaf 11.

In this embodiment, adopt base 1, leg post 2, backup pad 3, rose box 4, motor 5, filter fan 6, first gas collecting tube 7, air pump 8, second gas collecting tube 9, denitration case 10, hinge 11 and switch door 12 mutually support, reached and made the device be convenient for carry out filterable effect to gas, extracted the gas that produces in producing through air pump 8, drive filter fan 6 through motor 5 and rotate and carry out preliminary filtration to gas, can dispel the partial impurity in the gas.

Example 2

As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, one side fixedly connected with lighter 13 of denitration case 10, one side fixedly connected with outlet duct 15 of denitration case 10 has connect reactant spray tube 14, and draw-in groove 16 has been seted up to the inner wall of the outer wall fixedly connected with outlet duct 15 of denitration case 10, and the inner wall joint of draw-in groove 16 has fixture block 17, and the outer wall fixedly connected with active carbon adsorption net 18 of fixture block 17, the outer wall bearing of outlet duct 15 is connected with clearance door 19, the one end fixedly connected with collection miscellaneous case 20 of outlet duct 15.

In this embodiment, the device can be provided with an effect of facilitating cleaning.

Example 3

As shown in fig. 1-4, on the basis of embodiment 1 and embodiment 2, the present utility model provides a technical solution: preferably, the outer wall of the supporting plate 3 is fixedly connected with an air pump 8, and one end of the second gas collecting tube 9 is fixedly connected with a denitration box 10.

In this embodiment, the structure in this embodiment allows the apparatus to facilitate the process of injecting gas into the denitration tank 10.

Preferably, the number of the sparks 13 is two, and the sparks 13 are located at both sides of the denitration case 10.

In this embodiment, the gas can be sufficiently heat-treated.

Preferably, the clamping blocks 17 and the clamping grooves 16 are matched with each other, and the diameter of the activated carbon adsorption net 18 is equal to the inner diameter of one side of the air outlet pipe 15.

In this embodiment, the device can be easily detached.

Preferably, the switch door 12 is located right in front of the filter box 4, and the switch doors 12 are symmetrical to each other along the central axis of the filter box 4.

In this embodiment, the device can be made easy to clean.

Preferably, the length of the activated carbon adsorbing net 18 and the cartridge 17 is smaller than the length of the cleaning door 19.

In this embodiment, the device can be removed for cleaning.

The working principle of the SCR denitration device for the thermal power plant and the steel plant is specifically described below.

As shown in fig. 1-4, firstly, gas generated in production is extracted through an air pump 8, the gas is primarily filtered by driving a filtering fan 6 to rotate through a motor 5, so that partial impurities in the gas can be removed, secondly, the filtered gas is conveyed into a denitration box 10 through a second gas collecting pipe 9 by the air pump 8, the gas is heated through a flame arrester 13 and is sprayed with ammonia water through a reactant spray pipe 14 to fully react with the gas, then, carbon oxides in the gas can be removed, denitration is realized, the gas after the reaction treatment can be further filtered through an activated carbon adsorption net 18 on an air outlet pipe 15, and the activated carbon adsorption net 18 is taken out and cleaned through a cleaning door 19.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. SCR denitrification facility for steam power plant, iron and steel plant, including base (1), its characterized in that: the outer wall of the base (1) is fixedly connected with a leg column (2), and the outer wall of the leg column (2) is fixedly connected with a supporting plate (3);

the outer wall of the supporting plate (3) is fixedly connected with a filter box (4), the outer wall of the filter box (4) is fixedly connected with a motor (5), an output shaft of the motor (5) is fixedly connected with a filter fan (6) through a coupling, one side of the filter box (4) is fixedly connected with a first gas collecting tube (7), and one side of the filter box (4) is fixedly connected with an air pump (8);

the output end fixedly connected with second gas collecting tube (9) of air pump (8), the outer wall fixedly connected with denitration case (10) of base (1), the outer wall bearing of rose box (4) is connected with hinge (11), one side fixedly connected with switch door (12) of hinge (11).

2. The SCR denitration device for a thermal power plant and a steel plant according to claim 1, wherein: one side fixedly connected with ware of striking sparks (13) of denitration case (10), one side fixedly connected with reactant spray tube (14) of denitration case (10), outer wall fixedly connected with outlet duct (15) of denitration case (10), draw-in groove (16) have been seted up to the inner wall of outlet duct (15), the inner wall joint of draw-in groove (16) has fixture block (17), the outer wall fixedly connected with active carbon adsorption net (18) of fixture block (17), the outer wall bearing of outlet duct (15) is connected with clearance door (19), the one end fixedly connected with collection miscellaneous case (20) of outlet duct (15).

3. The SCR denitration device for a thermal power plant and a steel plant according to claim 1, wherein: the outer wall fixedly connected with air pump (8) of backup pad (3), just the one end fixedly connected with denitration case (10) of second gas-collecting tube (9).

4. The SCR denitration device for a thermal power plant and a steel plant according to claim 2, wherein: the number of the firearms (13) is two, and the firearms (13) are positioned at two sides of the denitration box (10).

5. The SCR denitration device for a thermal power plant and a steel plant according to claim 2, wherein: the clamping blocks (17) are matched with the clamping grooves (16), and the diameter of the activated carbon adsorption net (18) is equal to the inner diameter of one side of the air outlet pipe (15).

6. The SCR denitration device for a thermal power plant and a steel plant according to claim 2, wherein: the lengths of the activated carbon adsorption net (18) and the clamping block (17) are smaller than the length of the cleaning door (19).