CN215428227U

CN215428227U - Flow field optimization equipment of thermal power boiler SCR denitration system

Info

Publication number: CN215428227U
Application number: CN202121834377.9U
Authority: CN
Inventors: 刘雅娟; 刘东奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-07
Filing date: 2021-08-07
Publication date: 2022-01-07
Anticipated expiration: 2031-08-07

Abstract

The utility model discloses flow field optimization equipment of a thermal power boiler SCR denitration system, and relates to the technical field of flow field optimization. The utility model utilizes the flow stabilizing pipe to stabilize the flue gas, the ventilation holes uniformly covered on the surface of the flow stabilizing pipe form flow conversion to the flue gas, and the flue gas is advanced forwards through the output pipeline, so that the flue gas is orderly circulated, and the flow field of the flue gas is smoother to operate.

Description

Flow field optimization equipment of thermal power boiler SCR denitration system

Technical Field

The utility model relates to the technical field of flow field optimization, in particular to flow field optimization equipment of an SCR denitration system of a thermal power boiler.

Background

The thermal power plant is a plant for producing electric energy by using combustible materials (such as coal) as fuel, in the thermal power generation, in order to prevent excessive NOx generated after coal in a boiler is combusted from polluting the environment, denitration treatment is carried out on the coal, and the denitration treatment is divided into denitration before combustion, denitration during combustion and denitration after combustion, namely NOx (nitrogen oxide) in flue gas is removed, the substance enters the atmosphere to form acid rain, and the acid rain has great harm to human beings, so that environmental protection needs to be promoted, and the flue gas taking the coal as the fuel contains the substances, particularly the thermal power plant;

at present, the SCR denitration system of a thermal power boiler has the problems of catalyst blockage, abrasion and the like in the actual operation process, the flow rate of flue gas is unstable, and certain pollutant content exists, so that the operation efficiency and the operation fluency of equipment are influenced. Therefore, a flow field optimization device of the SCR denitration system of the thermal power boiler is provided.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide flow field optimization equipment of a thermal power boiler SCR denitration system, which aims to solve the problems of catalyst blockage and abrasion, unstable flue gas flow rate, certain pollutant content and the like of the existing SCR denitration system.

In order to achieve the purpose, the utility model adopts the technical scheme that: a flow field optimization device of a thermal power boiler SCR denitration system comprises a box body, wherein an air inlet is connected to the side surface of the bottom end of the box body, an air outlet is connected to the side surface of the upper end of the box body, a flow stabilizing pipe is arranged inside the box body, a plurality of ventilation holes are formed in the side surface of the periphery of the flow stabilizing pipe, the input end of the flow stabilizing pipe is matched with the air inlet, the output end of the flow stabilizing pipe is connected with a joint, the joint is matched with the air outlet, an air box is connected inside the box body, a fan is arranged inside the air box, an air filtering plate is arranged on the surface of the air box, the output end of the fan is matched with the air filtering plate, a control box is arranged on one side of the air box, a gas purifying box is arranged on the side surface of the box body, one end of the gas purifying box is connected with a flow changing pipe, a through hole is formed in the surface of the box body, the flow changing pipe penetrates through hole, and an air deflector is arranged inside the box body, one end of the converter tube is connected with the air deflector, and the bottom end of the box body is provided with the mounting block.

Preferably, the inside of the box body is connected with a partition board, and the partition board is positioned above the air deflector to form a hierarchical treatment effect of the flue gas.

Preferably, the inner side surface of the box body is connected with a wind shield, and the wind shield is adapted to the air inlet to enhance the sealing performance of the air inlet end.

Preferably, control box surface mounting has control panel, control panel and fan electric connection, the degree of automation of operation is higher.

Preferably, the surface of the mounting block is connected with a fixing piece, one end of the fixing piece is connected with the box body, and the mounting block is fixedly connected through the fixing piece.

Preferably, be connected with the buckle between net gas tank side surface and the box, be convenient for carry out the dismouting clearance to net gas tank.

Preferably, the air filtering plate is connected with the air box in a buckling mode, so that the air filtering plate is convenient to disassemble, assemble and maintain, and the service life of the air filtering plate is prolonged.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the flue gas flow stabilization is carried out by using the flow stabilizing pipe, which is actually represented as a circulation process from an air inlet to an air outlet, after the flue gas is synchronously disturbed, the flow of the flue gas is changed by the ventilation holes uniformly covered on the surface of the flow stabilizing pipe, and the flue gas is advanced forwards by the output pipeline, so that the flue gas is orderly circulated, and the flue gas flow field is smoother to operate.

2. In the utility model, the inside of the box body is disturbed by wind power through the air filtering plate by using the fan inside the air box, so that the smoke is disturbed, the circulation efficiency of the smoke is synchronously improved, the uniformity of various substances inside the box body is kept, and the flow field optimization efficiency of the smoke is enhanced.

3. In the utility model, the gas purification box is operated, the flow change pipe is utilized to change the flow of the smoke in the box body, the smoke is specifically sucked by the air deflector, and the purified gas box is discharged by the flow change pipe after being purified, so that impurities and dust in the smoke are removed, and the blockage, abrasion and the like of the catalyst are reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a flow field optimization device of an SCR denitration system of a thermal power boiler;

FIG. 2 is a schematic bottom structure diagram of flow field optimization equipment of an SCR denitration system of a thermal power boiler;

FIG. 3 is a schematic diagram of a side view structure of a flow field optimization device of an SCR denitration system of a thermal power boiler according to the present invention;

FIG. 4 is a cross sectional view of the surface A-A in FIG. 3 of the flow field optimization device of the SCR denitration system of the thermal power boiler;

fig. 5 is a partially enlarged view of a portion a in fig. 1 of a flow field optimization device of an SCR denitration system of a thermal power boiler according to the present invention.

In the figure: 1. a box body; 2. an air inlet; 3. an exhaust port; 4. a flow stabilizing pipe; 5. a partition plate; 6. a wind deflector; 7. a gas purification box; 8. a flow changing pipe; 9. an air deflector; 10. a control box; 11. a control panel; 12. mounting blocks; 13. a fixing member; 14. buckling; 15. a joint; 16. a wind filtering plate; 17. an air box; 18. a fan.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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. 1-5, the utility model is a flow field optimization device of a thermal power boiler SCR denitration system, comprising a box body 1, an air inlet 2 is connected to the bottom side surface of the box body 1, an exhaust port 3 is connected to the upper side surface of the box body 1, a flow stabilizing pipe 4 is installed inside the box body 1, a plurality of ventilation holes are arranged on the peripheral side surface of the flow stabilizing pipe 4, the input end of the flow stabilizing pipe 4 is adapted to the air inlet 2, the output end of the flow stabilizing pipe 4 is connected to a connector 15, the connector 15 is adapted to the exhaust port 3, a bellows 17 is connected inside the box body 1, a fan 18 is installed inside the bellows 17, a wind filtering plate 16 is installed on the surface of the bellows 17, the output end of the fan 18 is adapted to the wind filtering plate 16, a control box 10 is arranged on one side of the bellows 17, a clean air box 7 is installed on the side surface of the box body 1, one end of the clean air box 7 is connected to a flow changing pipe 8, a through hole is arranged on the surface of the box body 1, the flow changing pipe 8 penetrates through the through hole, an air deflector 9 is arranged in the box body 1, one end of the flow changing pipe 8 is connected with the air deflector 9, and a mounting block 12 is arranged at the bottom end of the box body 1 to support and protect the box body 1;

1 internally connected with baffle 5 of box, baffle 5 is located aviation baffle 9 top, the level that forms the flue gas advances progressively, 1 inboard side surface of box is connected with deep bead 6, deep bead 6 suits with air inlet 2, strengthen sealed effect, control box 10 surface mounting has control panel 11,

control panel

11 and 18 electric connection of fan, it is stronger to operate self-adaptive capacity, installation piece 12 surface connection has mounting 13, mounting 13 one end is connected with box 1, it is fixed to utilize mounting 13 to connect mounting 12, be connected with buckle 14 between 7 side surfaces of gas purification case and the box 1, buckle 14 is connected gas purification case 7, it is connected with 17 buckles of bellows to strain wind board 16, be convenient for tear open and wash the change to strain wind board 16.

It should be noted that the utility model is a flow field optimization device of a thermal power boiler SCR denitration system, during the use, the smoke flow of the denitration system enters into the box body 1 from the air inlet 2, the smoke flow undergoes turbulence, purification and steady flow in the box body 1, firstly, the wind power turbulence is carried out on the interior of the box body 1 through the wind filtering plate 16 by the fan 18 in the air box 17, the smoke is disturbed, the circulation efficiency of the smoke is synchronously improved, and the uniformity of each substance in the interior is kept, the gas purification box 7 is operated, the smoke in the box body 1 is changed flow by the flow changing pipe 8, specifically, the smoke is sucked by the wind guide plate 9, the gas purification box 7 is discharged by the flow changing pipe 8 again after the smoke purification, the impurities and dust in the smoke are removed, the catalyst blockage and abrasion are reduced, the secondary steady flow is carried out by the flow pipe 4, the actual performance is the circulation process from the air inlet 1 to the exhaust port 3, after the synchronous disturbance of the flue gas, the ventilation holes uniformly covered on the surface of the flow stabilizing pipe 4 change the flow of the flue gas, the flue gas is advanced forwards through the output pipeline, the flue gas is orderly circulated, the flow field of the flue gas is smoother, and the rated output power of the fan 18 in the scheme is 1.5 KW.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a thermal power boiler SCR deNOx systems's flow field optimizing apparatus, includes box (1), its characterized in that: the air purifier is characterized in that the side surface of the bottom end of the box body (1) is connected with an air inlet (2), the side surface of the upper end of the box body (1) is connected with an air outlet (3), the box body (1) is internally provided with a flow stabilizing pipe (4), the side surface of the periphery of the flow stabilizing pipe (4) is provided with a plurality of ventilation holes, the input end of the flow stabilizing pipe (4) is matched with the air inlet (2), the output end of the flow stabilizing pipe (4) is connected with a joint (15), the joint (15) is matched with the air outlet (3), the box body (1) is internally connected with an air box (17), the air box (17) is internally provided with a fan (18), the surface of the air box (17) is provided with an air filtering plate (16), the output end of the fan (18) is matched with the air filtering plate (16), one side of the air box (17) is provided with a control box (10), and the side surface of the box body (1) is provided with an air purifying box (7), the air purifying box is characterized in that one end of the air purifying box (7) is connected with a flow exchanging pipe (8), a through hole is formed in the surface of the box body (1), the flow exchanging pipe (8) penetrates through the through hole, an air deflector (9) is arranged inside the box body (1), one end of the flow exchanging pipe (8) is connected with the air deflector (9), and a mounting block (12) is mounted at the bottom end of the box body (1).

2. The flow field optimization equipment of the thermal power boiler SCR denitration system according to claim 1, characterized in that: the box body (1) is internally connected with a partition plate (5), and the partition plate (5) is positioned above the air guide plate (9).

3. The flow field optimization equipment of the thermal power boiler SCR denitration system according to claim 1, characterized in that: the air inlet is characterized in that a wind shield (6) is connected to the inner side surface of the box body (1), and the wind shield (6) is adapted to the air inlet (2).

4. The flow field optimization equipment of the thermal power boiler SCR denitration system according to claim 1, characterized in that: control box (10) surface mounting has control panel (11), control panel (11) and fan (18) electric connection.

5. The flow field optimization equipment of the thermal power boiler SCR denitration system according to claim 1, characterized in that: the surface of the mounting block (12) is connected with a fixing piece (13), and one end of the fixing piece (13) is connected with the box body (1).

6. The flow field optimization equipment of the thermal power boiler SCR denitration system according to claim 1, characterized in that: a buckle (14) is connected between the side surface of the air purification box (7) and the box body (1).

7. The flow field optimization equipment of the thermal power boiler SCR denitration system according to claim 1, characterized in that: the air filtering plate (16) is connected with the air box (17) in a buckling mode.