A high-temperature denitration catalyst anti-blocking device

Abstract

The utility model discloses a high temperature denitration catalyst prevents blocking device, including rising flue, horizontal flue, denitration reactor, be equipped with ammonia injection structure in the rising flue, be equipped with the turbulence structure in the horizontal flue, be equipped with the screen from top to bottom in the denitration reactor and have guide structure, first denitration catalyst layer, second denitration catalyst layer, the turbulence structure includes a plurality of turbulence board of arrangement and layout, and the turbulence board includes first straight board, inclined board, second straight board, and a turbulence board group is formed to a plurality of turbulence boards, and the turbulence board group is equipped with two groups of symmetrical layout, and the horizontal flue wall below the turbulence structure is equipped with the notch, and the notch is equipped with the fixed net, and the fixed net below is equipped with the collection box. The utility model discloses a turbulence structure is set up, and part dust particle is blocked and is collected, and after the dust amount that carries in flue gas is reduced, part dust is blocked again through the screen, and then flue gas is guided to first denitration catalyst layer, reduces the possibility that dust is attached to catalyst end face through -hole, and the anti -blocking performance has been improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas denitrification equipment, specifically to a high-temperature denitrification catalyst anti-clogging device. Background Technology

[0002] High-temperature flue gas from coal combustion contains significant amounts of nitrogen oxides, sulfur oxides, and dust, requiring desulfurization, denitrification, and dust removal to meet emission standards before being released into the air. Denitrification of the flue gas is typically achieved through ammonia injection followed by catalytic reaction. However, during flue gas denitrification, the presence of a large amount of dust can cause it to settle on the catalyst end face, clogging the catalyst pores and affecting flue gas flow, thus impacting the denitrification effect. Current technologies for preventing catalyst clogging generally employ soot blowing, but this method has limited effectiveness and requires improvement. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a device that effectively prevents clogging of high-temperature denitrification catalysts.

[0004] To achieve the above objectives, this utility model provides a high-temperature denitrification catalyst anti-clogging device, which adopts the following technical solution:

[0005] A high-temperature denitrification catalyst anti-clogging device includes an ascending flue, a horizontal flue, and a denitrification reactor. The flue is equipped with an ammonia injection structure, and the horizontal flue is equipped with a turbulence-inducing structure. The denitrification reactor is equipped with a baffle net, a flow guiding structure, a first denitrification catalyst layer, and a second denitrification catalyst layer, arranged from top to bottom. The turbulence-inducing structure includes multiple arranged turbulence-inducing plates, each comprising a first straight plate, an inclined plate, and a second straight plate. Multiple turbulence-inducing plates form a turbulence-inducing plate group, with two symmetrically arranged groups. A notch is provided in the wall of the horizontal flue below the turbulence-inducing structure, and a fixing net is installed at the notch. A collection box is located below the fixing net.

[0006] A further improvement of this utility model of a high-temperature denitrification catalyst anti-clogging device is that a recess is provided on the side of the inclined plate away from the flue gas flow direction.

[0007] A further improvement of this utility model of a high-temperature denitrification catalyst anti-clogging device is that the flow guiding structure includes a horizontal plate, and the horizontal plate is provided with a plurality of flow guiding channels, which correspond to the flue gas channels in the first denitrification catalyst layer.

[0008] A further improvement of this utility model of a high-temperature denitrification catalyst anti-clogging device is that a frame is provided at the lower end of the horizontal plate. The frame includes four sets of side plates that surround each other. A clamping plate is provided inside the frame that is clamped to the side wall of the guide channel. The clamping plate includes fixed plates arranged in the longitudinal and transverse directions. A channel for flue gas flow is formed between the fixed plates. The channel is connected downward to a guide channel. The guide channel is conical and extends into the flue gas channel of the first catalyst layer.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention uses a turbulence structure to block and collect some dust particles, reducing the amount of dust carried in the flue gas. After passing through a baffle, some dust is blocked again, and the flue gas is then guided to the first denitrification catalyst layer, reducing the possibility of dust adhering to the through holes on the catalyst end face and improving the anti-clogging performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a top view schematic diagram of the turbulence structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the spoiler of this utility model;

[0014] Figure 4 This is a schematic diagram of the framework of this utility model.

[0015] In the diagram: 1 rising flue, 2 horizontal flue, 3 denitrification reactor, 4 turbulence structure, 5 baffle, 6 horizontal plate, 7 frame, 8 first denitrification catalyst layer, 9 second denitrification catalyst layer, 10 turbulence plate, 11 recess, 12 side plate, 13 clamping plate, 14 guide channel, 15 collection box. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 and Figure 2As shown, a high-temperature denitrification catalyst anti-clogging device includes an ascending flue 1, a horizontal flue 2, and a denitrification reactor 3. The ascending flue is equipped with an ammonia injection structure. Specifically, the horizontal flue is equipped with a turbulence structure 4. The denitrification reactor is equipped with a baffle 5, a flow guiding structure 6, a first denitrification catalyst layer 8, and a second denitrification catalyst layer 9 arranged from top to bottom. The turbulence structure includes multiple turbulence plates 10 arranged in a row. The turbulence plates include a first straight plate, an inclined plate, and a second straight plate. Multiple turbulence plates form a turbulence plate group. The turbulence plate group has two sets of symmetrically arranged plates. A notch is opened on the wall of the horizontal flue below the turbulence structure. A fixing net is installed at the notch. A collection box 15 is installed below the fixing net.

[0018] like Figure 3 As shown, a recess 11 is provided on the inclined plate on the side away from the direction of flue gas flow.

[0019] Furthermore, the flow guiding structure includes a horizontal plate with several flow guiding channels, which correspond to the flue gas channels in the first denitrification catalyst layer. For example... Figure 4 As shown, a frame 7 is provided at the lower end of the horizontal plate. The frame includes four sets of side plates 12 that surround each other. A clamping plate 13 is provided inside the frame and is clamped to the side wall of the guide channel. The clamping plate includes fixed plates arranged in the longitudinal and transverse directions. A channel for flue gas flow is formed between the fixed plates. The channel is connected downward to a guide channel 14. The guide channel is conical and extends into the flue gas channel of the first catalyst layer.

[0020] The working principle of this utility model is as follows: the flue gas generated by coal combustion enters the rising flue, the ammonia injection structure works, the mixed flue gas enters the horizontal flue, passes through the turbulence structure, some dust particles are blocked and fall into the collection box, then the flue gas passes through the baffle, through the guide structure, specifically, through the guide holes on the horizontal plate, and enters the flue gas channel of the first denitrification catalyst, and then passes through the second catalyst layer.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-temperature denitrification catalyst anti-clogging device, comprising an ascending flue, a horizontal flue, and a denitrification reactor, characterized in that: The rising flue is equipped with an ammonia injection structure, the horizontal flue is equipped with a turbulence structure, and the denitrification reactor is equipped with a baffle, a flow guiding structure, a first denitrification catalyst layer, and a second denitrification catalyst layer from top to bottom. The turbulence structure includes multiple turbulence plates arranged in a row. Each turbulence plate includes a first straight plate, an inclined plate, and a second straight plate. Multiple turbulence plates form a turbulence plate group, and the turbulence plate group has two sets of symmetrically arranged plates. A notch is opened on the wall of the horizontal flue below the turbulence structure, and a fixing net is installed at the notch. A collection box is installed below the fixing net.

2. The anti-clogging device for a high-temperature denitrification catalyst according to claim 1, characterized in that: The inclined plate has a recessed portion on the side away from the direction of flue gas flow.

3. The high-temperature denitrification catalyst anti-clogging device according to claim 2, characterized in that: The flow guiding structure includes a horizontal plate with several flow guiding channels, which correspond to the flue gas channels in the first denitrification catalyst layer.

4. The high-temperature denitrification catalyst anti-clogging device according to claim 3, characterized in that: The lower end of the horizontal plate is provided with a frame, which includes four sets of side plates that surround each other. Inside the frame, there is a clamping plate that is clamped to the side wall of the guide channel. The clamping plate includes a fixing plate arranged in the longitudinal and transverse directions. The fixing plates form a channel for flue gas flow. The channel is connected downward to a guide channel, which is conical and extends into the flue gas channel of the first catalyst layer.

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