CN215539810U

CN215539810U - Boiler flue gas catalytic denitration equipment

Info

Publication number: CN215539810U
Application number: CN202120295685.2U
Authority: CN
Inventors: 李燕春; 段崇美; 刘颖超
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2022-01-18
Anticipated expiration: 2031-02-03

Abstract

The utility model discloses a boiler flue gas catalytic denitration device which comprises a box body, a first denitration cavity and a second denitration cavity, wherein a partition plate is arranged in the box body, and the first denitration cavity and the second denitration cavity are respectively positioned on two sides of the partition plate. According to the utility model, the sealing cover can seal the box body, and meanwhile, the reducing agent placing frame can be conveniently detached and installed, so that people can conveniently replace the sealing cover, the efficiency of dry denitration can be improved, the smoke inlet pipe can facilitate smoke to be carried out, the smoke can be conveniently reduced and denitrated, the water inlet pipe and the liquid distribution port can facilitate people to distribute a distribution agent for smoke denitration, the structure is simple, the dry denitration and the wet denitration can be combined, and the denitration efficiency is better.

Description

Boiler flue gas catalytic denitration equipment

Technical Field

The utility model relates to the technical field of flue gas denitration, in particular to catalytic denitration equipment for boiler flue gas.

Background

The flue gas denitration technology mainly comprises a dry method (selective catalytic reduction flue gas denitration, selective non-catalytic reduction denitration) and a wet method. Compared with the wet flue gas denitration technology, the dry flue gas denitration technology has the main advantages that: the basic investment is low, the equipment and the process are simple, the efficiency of removing NOX is higher, no wastewater and waste treatment is caused, and secondary pollution is not easy to cause;

present relate to a boiler flue gas catalytic denitration equipment, present flue gas denitration equipment has certain drawback, and present flue gas denitration equipment is single simultaneously carries out dry process denitration or wet process denitration, and its denitration process is complete carries out the denitration to the boiler flue gas to influence the efficiency of denitration, have certain inconvenience.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides boiler flue gas catalytic denitration equipment.

In order to achieve the purpose, the utility model adopts the following technical scheme: a catalytic denitration device for boiler flue gas comprises a box body, a first denitration cavity and a second denitration cavity, wherein a partition plate is arranged inside the box body, and the first denitration cavity and the second denitration cavity are respectively positioned on two sides of the partition plate;

a fixing frame is arranged inside the second denitration cavity, and a reducing agent placing frame and a filter screen are arranged inside the fixing frame;

the top of the box body is fixedly connected with a dilute nitric acid configuration box, the bottom of the dilute nitric acid configuration box is provided with a water spray pipe in a penetrating mode, one end of the water spray pipe is fixedly connected with a spray head, and the spray head is located inside the first denitration cavity;

the outer surface of the partition plate is provided with a connecting pipe in a penetrating mode, and the first denitration cavity is communicated with the second denitration cavity through the connecting pipe.

As a further description of the above technical solution:

the reducing agent rack is located directly over the filter screen, and filter screen and mount fixed connection, the surface cover of reducing agent rack is equipped with the sealing washer, the position that the inner wall of mount corresponds the sealing washer is provided with the annular seal groove, and the sealing washer is connected with the embedding of annular seal groove.

As a further description of the above technical solution:

the top fixedly connected with connecting rod of connecting pipe, and the connecting rod is evenly distributed's three, three the common fixedly connected with conical cover of one end that the connecting pipe was kept away from to the connecting rod, and the conical cover is located the shower nozzle under.

As a further description of the above technical solution:

the position that the surface of box corresponds first denitration chamber runs through and is connected with outlet pipe (), the position that the surface of box corresponds the reductant rack is provided with sealed lid.

As a further description of the above technical solution:

the bottom of the box body is provided with a smoke inlet pipe in a penetrating way.

As a further description of the above technical solution:

the outer surface of the dilute nitric acid preparation box is provided with a water inlet pipe, and the top of the dilute nitric acid preparation box is provided with a liquid distribution port.

The utility model has the following beneficial effects:

1. when the catalytic denitration equipment for boiler flue gas is used, the inlet flue gas can be subjected to dry denitration by the aid of the reducing agent placing frame, the filter screen, the conical cover, the spray head, the sealing cover, the box body and the reducing agent placing frame, dust in the flue gas can be filtered by the filter screen, so that the service life of the reducing agent is prolonged, liquid sprayed by the spray head can be prevented from entering the inner part of the connecting pipe by the conical cover, wet denitration is facilitated, the sealing cover can seal the box body, the reducing agent placing frame can be conveniently detached and installed, so that the change by people is facilitated, the efficiency of the dry denitration can be improved, the flue gas can be conveniently reduced and denitrated by the aid of the smoke inlet pipe, the configuration agent for flue gas denitration can be conveniently configured by people by the aid of the water inlet pipe and the liquid distribution port, the catalytic denitration equipment is simple in structure, and can be combined with the dry denitration and the wet denitration, thereby making denitration efficiency better.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is an enlarged view of a in fig. 2 according to the present invention.

Illustration of the drawings:

1. a box body; 2. a dilute nitric acid preparation box; 3. a sealing cover; 4. a smoke inlet pipe; 5. a liquid distribution port; 6. a water inlet pipe; 7. a water spray pipe; 8. a first denitration chamber; 9. a second denitration chamber; 10. a spray head; 11. a conical cover; 12. a connecting rod; 13. a connecting pipe; 14. a partition plate; 15. a water outlet pipe; 16. a reducing agent placing rack; 17. a fixed mount; 18. a seal ring; 19. a filter screen; 20. an annular seal groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, one embodiment of the present invention is provided: a catalytic denitration device for boiler flue gas comprises a box body 1, a first denitration cavity 8 and a second denitration cavity 9, wherein a partition plate 14 is arranged inside the box body 1, and the first denitration cavity 8 and the second denitration cavity 9 are respectively positioned on two sides of the partition plate 14; wherein a fixing frame 17 is arranged inside the second denitration chamber 9, and a reducing agent placing frame 16 and a filter screen 19 are arranged inside the fixing frame 17; the top of the box body 1 is fixedly connected with a dilute nitric acid configuration box 2, the bottom of the dilute nitric acid configuration box 2 is provided with a spray pipe 7 in a penetrating mode, one end of the spray pipe 7 is fixedly connected with a spray head 10, and the spray head 10 is located inside a first denitration cavity 8; the outer surface of the partition plate 14 is provided with a connecting pipe 13 in a penetrating manner, and the first denitration chamber 8 is communicated with the second denitration chamber 9 through the connecting pipe 13.

The reducing agent placing frame 16 is located right above the filter screen 19, the filter screen 19 is fixedly connected with the fixing frame 17, a sealing ring 18 is sleeved on the outer surface of the reducing agent placing frame 16, an annular sealing groove 20 is formed in the position, corresponding to the sealing ring 18, of the inner wall of the fixing frame 17, the sealing ring 18 is connected with the annular sealing groove 20 in an embedded mode, the reducing agent placing frame 16 can conduct dry denitration on entering flue gas, and the filter screen 19 can filter dust in the flue gas, so that the service life of the reducing agent is prolonged; the top of the connecting pipe 13 is fixedly connected with three connecting rods 12, the connecting rods 12 are uniformly distributed, one ends of the three connecting rods 12 far away from the connecting pipe 13 are fixedly connected with the conical cover 11 together, the conical cover 11 is positioned right below the spray head 10, and the conical cover 11 can prevent liquid sprayed by the spray head 10 from entering the connecting pipe 13, so that wet denitration is facilitated; a water outlet pipe (15) penetrates through the outer surface of the box body 1 corresponding to the position of the first denitration cavity 8, a sealing cover 3 is arranged on the outer surface of the box body 1 corresponding to the position of the reducing agent placing frame 16, the sealing cover 3 can seal the box body 1, and meanwhile, the reducing agent placing frame 16 can be conveniently detached and installed, so that people can conveniently replace the reducing agent placing frame, and the dry-method denitration efficiency can be improved; the bottom of the box body 1 is provided with a smoke inlet pipe 4 in a penetrating way, and the smoke inlet pipe 4 can facilitate smoke to be carried out, so that reduction denitration can be conveniently carried out on the smoke; the surface of rare nitric acid configuration case 2 is provided with inlet tube 6, and the top of rare nitric acid configuration case 2 is provided with joins in marriage liquid mouth 5, and inlet tube 6 and join in marriage liquid mouth 5 can be convenient for people to dispose flue gas denitration's configuration agent.

The working principle is as follows: when the boiler flue gas catalytic denitration device is used, the reducing agent placing frame 16 can carry out dry denitration on the entering flue gas, the filter screen 19 can filter dust in the flue gas, thereby improving the service life of the reducing agent, the cone cover 11 can prevent the liquid sprayed from the spray head 10 from entering the inside of the connection pipe 13, thereby facilitating the wet denitration, the sealing cover 3 can seal the box body 1, and simultaneously facilitating the disassembly and the installation of the reducing agent placing rack 16, thereby being convenient for people to replace, improving the efficiency of dry denitration, facilitating the flue gas to be carried out by the flue gas inlet pipe 4, thereby be convenient for carry out the reduction denitration to the flue gas, inlet tube 6 and join in marriage liquid mouth 5 and can be convenient for people to dispose flue gas denitration's configuration agent, simple structure can combine together dry process denitration and wet process denitration to make denitration efficiency better, have certain practicality.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a boiler flue gas catalytic denitration equipment, includes box (1), first denitration chamber (8), second denitration chamber (9), its characterized in that: a partition plate (14) is arranged in the box body (1), and the first denitration cavity (8) and the second denitration cavity (9) are respectively positioned on two sides of the partition plate (14);

a fixing frame (17) is arranged inside the second denitration chamber (9), and a reducing agent placing frame (16) and a filter screen (19) are arranged inside the fixing frame (17);

the top of the box body (1) is fixedly connected with a dilute nitric acid configuration box (2), the bottom of the dilute nitric acid configuration box (2) is provided with a water spray pipe (7) in a penetrating mode, one end of the water spray pipe (7) is fixedly connected with a spray head (10), and the spray head (10) is located inside the first denitration cavity (8);

the outer surface of the partition plate (14) is provided with a connecting pipe (13) in a penetrating mode, and the first denitration cavity (8) is communicated with the second denitration cavity (9) through the connecting pipe (13).

2. The boiler flue gas catalytic denitration device of claim 1, characterized in that: reducing agent rack (16) are located directly over filter screen (19), and filter screen (19) and mount (17) fixed connection, the surface cover of reducing agent rack (16) is equipped with sealing washer (18), the position that the inner wall of mount (17) corresponds sealing washer (18) is provided with annular seal groove (20), and sealing washer (18) and annular seal groove (20) embedding are connected.

3. The boiler flue gas catalytic denitration device of claim 1, characterized in that: the top fixedly connected with connecting rod (12) of connecting pipe (13), and connecting rod (12) are evenly distributed three, three the common fixedly connected with conical cover (11) of one end that connecting pipe (13) were kept away from in connecting rod (12), and conical cover (11) are located shower nozzle (10) under.

4. The boiler flue gas catalytic denitration device of claim 1, characterized in that: the position that the surface of box (1) corresponds first denitration chamber (8) runs through and is connected with outlet pipe (15), the position that the surface of box (1) corresponds reductant rack (16) is provided with sealed lid (3).

5. The boiler flue gas catalytic denitration device of claim 1, characterized in that: the bottom of the box body (1) is provided with a smoke inlet pipe (4) in a penetrating way.

6. The boiler flue gas catalytic denitration device of claim 1, characterized in that: the outer surface of the dilute nitric acid preparation box (2) is provided with a water inlet pipe (6), and the top of the dilute nitric acid preparation box (2) is provided with a liquid distribution port (5).