Horizontal SCR (Selective Catalytic Reduction) denitration reactor

Abstract

The utility model provides a horizontal SCR (Selective Catalytic Reduction) denitration reactor, which comprises a tank body, a smoke inlet, a smoke outlet, a heater and a reaction layer, the tank body is horizontally arranged, the smoke inlet and the smoke outlet are respectively arranged on two sides of the tank body and are respectively connected with the tank body in a sealing way, the reaction layer is arranged in the middle area of the tank body in a sealing way, and the heater is arranged in the middle area of the tank body. The reaction layer comprises a plurality of catalyst layers which are vertically arranged in the tank body; the heater is arranged between the smoke inlet and the reaction layer, the heater is in sealed connection with the inner wall of the tank body, a plurality of heating pipelines are horizontally arranged in the heater, and the heating pipelines are electric heating pipes. Compared with a conventional denitration device which is vertically erected in a workshop, the denitration reactor adopts a horizontal structure, so that smoke directly enters the reactor; the installation height is reduced, the requirement for the height of a workshop is lowered, and space is saved.

Description

Technical Field

[0001] The utility model relates to the field of denitration, and in particular designs a horizontal SCR denitration reactor. Background Art

[0002] In the current flue gas denitrification treatment process, the denitrification reactor is the core equipment of the denitrification reaction. All denitrification reactions are carried out in the reactor. Conventional denitrification reactors generally adopt vertical multi-layer reactors. The height of the entire reactor is relatively high, and the space requirement of the workshop is relatively large. It is often the case that due to the height limit of the workshop, the denitrification reactor cannot meet the workshop requirements and cannot be installed, which affects production efficiency and increases installation costs. Summary of the invention

[0003] In view of the above problems, the utility model provides a horizontal SCR denitration reactor.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a horizontal SCR denitrification reactor, comprising a tank body, a smoke inlet, a smoke outlet, a heater and a reaction layer, the tank body is arranged horizontally, the smoke inlet and the smoke outlet are respectively arranged on both sides of the tank body, the smoke inlet and the smoke outlet are respectively sealed and connected to the tank body, the reaction layer is sealed and arranged in the middle area of ​​the tank body, the reaction layer includes a plurality of catalyst layers, and the catalyst layers are vertically arranged in the tank body; the heater is arranged between the smoke inlet and the reaction layer, the heater is sealed and connected to the inner wall of the tank body, and a plurality of heating pipes are horizontally arranged inside the heater, and the heating pipes are electric heating pipes.

[0005] Preferably, the connection between the smoke inlet and the tank body is a horizontal funnel-shaped structure, the end of the smoke inlet with a larger diameter is connected to the tank body, and the inner diameter of the end of the smoke inlet with a larger diameter is equal to the inner diameter of the tank body.

[0006] Preferably, the electric heating tube is a hollow tube, the axial direction of the inner hollow tube of the electric heating tube is consistent with the flow direction of the airflow, the inner tube wall and the outer tube wall of the electric heating tube are both provided with a heating layer, and each of the electric heating tubes is fixed by a fixing piece.

[0007] Preferably, the structure of the smoke outlet is consistent with that of the smoke inlet, and an ash outlet is provided at the bottom of the smoke outlet, and the ash outlet is detachably sealed and connected to the smoke outlet.

[0008] Preferably, a guide plate is provided between the smoke inlet and the heater, a plurality of flow equalizing holes are evenly arranged in the guide plate, the flow equalizing holes penetrate the guide plate transversely, and the inner diameter of the flow equalizing holes gradually increases from the smoke inlet to the smoke outlet.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: compared with the conventional vertical denitrification device installed in the workshop, the denitrification reactor in this patent adopts a horizontal structure, so that the flue gas enters the reactor directly, the installation height is reduced, the height requirement for the workshop is reduced, and space is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a horizontal SCR denitration reactor of the utility model;

[0011] Figure 2 It is a schematic diagram of a heater in a horizontal SCR denitration reactor of the utility model. DETAILED DESCRIPTION

[0012] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0013] Please refer to Figure 1 and Figure 2 A horizontal SCR denitration reactor according to an embodiment of the utility model comprises a tank body 1, a smoke inlet 2, a smoke outlet 3, a heater 4 and a reaction layer 5. The tank body 1 is arranged horizontally, the smoke inlet 2 and the smoke outlet 3 are respectively arranged on both sides of the tank body 1, the smoke inlet 2 and the smoke outlet 3 are respectively sealed and connected to the tank body 1, the reaction layer 5 is sealed and arranged in the middle area of ​​the tank body 1, the reaction layer 5 includes a plurality of catalyst layers, and the catalyst layers are vertically arranged in the tank body 1; the heater 4 is arranged between the smoke inlet 2 and the reaction layer 5, the heater 4 is sealed and connected to the inner wall of the tank body 1, and a plurality of heating pipes are horizontally arranged inside the heater 4, and the heating pipes are electric heating pipes 6.

[0014] The tank body 1 is disposed horizontally to avoid the situation where the height of the entire reactor tank body 1 is too high, resulting in insufficient workshop height and inability to install or remove the workshop ceiling, thereby saving plant space.

[0015] Preferably, the connection between the smoke inlet 2 and the tank body 1 is a horizontal funnel-shaped structure, the end of the smoke inlet 2 with a larger diameter is connected to the tank body 1, and the inner diameter of the end of the smoke inlet 2 with a larger diameter is equal to the inner diameter of the tank body 1. Compared with the conventional right-angle smoke inlet, the funnel-shaped smoke inlet 2 has a uniform smoke diffusion speed, and there will be no situation where part of the smoke is blocked by the right-angle smoke inlet, and the smoke intake efficiency is higher.

[0016] Preferably, the electric heating tube 6 is a hollow tube, the axial direction of the inner hollow tube of the electric heating tube 6 is consistent with the flow direction of the airflow, the inner tube wall and the outer tube wall of the electric heating tube 6 are both provided with a heating layer, and each electric heating tube 6 is fixed by a fixing piece. The hollow electric heating tube 6 can minimize the situation where smoke is blocked as much as possible.

[0017] Preferably, the structure of the smoke outlet 3 is consistent with that of the smoke inlet 2, and an ash outlet 7 is provided at the bottom of the smoke outlet 3. The ash outlet 7 is detachably sealed and connected to the smoke outlet 3. The funnel-shaped structure of the smoke outlet 3 ensures that some dust particles will accumulate due to the inclined surface wall. The ash outlet 7 provided at the bottom of the smoke outlet 3 allows workers to easily clean the dust accumulated near the smoke outlet 3, thereby ensuring the smoke outlet efficiency of the smoke outlet 3 and preventing the smoke outlet 3 from being blocked and affecting the airflow.

[0018] Preferably, a guide plate 8 is arranged between the smoke inlet 2 and the heater 4, and a plurality of flow equalizing holes are evenly arranged in the guide plate 8. The flow equalizing holes transversely penetrate the guide plate 8, and the inner diameter of the flow equalizing holes gradually increases from the smoke inlet 2 to the smoke outlet 3. The flow equalizing holes with gradually increasing inner diameters can effectively equalize the airflow entering the tank body 1, making it convenient for the staff to adjust the airflow velocity so that the smoke can smoothly enter the heater 3.

[0019] As described above, when the utility model is actually used, the flue gas enters from the funnel-shaped smoke inlet 1 and is evenly distributed by the flow-distributing holes on the guide plate 8, so that the flue gas reaches a suitable speed and enters the heater 3. The heater 3 is used to heat the flue gas to make the temperature reach the reaction conditions of denitrification, thereby improving the denitrification efficiency. The overall horizontally installed reactor can effectively save workshop space and avoid the problem of insufficient workshop space caused by the reactor being too high.

[0020] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A horizontal SCR denitration reactor, characterized in that: The invention comprises a tank body (1), a smoke inlet (2), a smoke outlet (3), a heater (4) and a reaction layer (5), wherein the tank body (1) is arranged horizontally, the smoke inlet (2) and the smoke outlet (3) are arranged on both sides of the tank body (1) respectively, the smoke inlet (2) and the smoke outlet (3) are respectively sealed and connected to the tank body (1), the reaction layer (5) is sealed and arranged in the middle area of ​​the tank body (1), the reaction layer (5) comprises a plurality of catalyst layers, and the catalyst layers are all arranged vertically in the tank body (1); the heater (4) is arranged between the smoke inlet (2) and the reaction layer (5), the heater (4) is sealed and connected to the inner wall of the tank body (1), and a plurality of heating pipes are horizontally arranged inside the heater (4), and the heating pipes are electric heating pipes (6).

2. The horizontal SCR denitration reactor according to claim 1, characterized in that: The electric heating tube (6) is a hollow tube, the inner hollow tube axis direction of the electric heating tube (6) is consistent with the airflow direction, the inner tube wall and the outer tube wall of the electric heating tube (6) are both provided with a heating layer, and each of the electric heating tubes (6) is fixed by a fixing piece.

3. The horizontal SCR denitration reactor according to claim 1, characterized in that: The connection between the smoke inlet (2) and the tank body (1) is a horizontally placed funnel-shaped structure; the end of the smoke inlet (2) with a larger diameter is connected to the tank body (1); and the inner diameter of the end of the smoke inlet (2) with a larger diameter is equal to the inner diameter of the tank body (1).

4. The horizontal SCR denitration reactor according to claim 1, characterized in that: The structure of the smoke outlet (3) is consistent with that of the smoke inlet (2); an ash outlet (7) is provided at the bottom of the smoke outlet (3); and the ash outlet (7) is detachably sealed and connected to the smoke outlet (3).

5. The horizontal SCR denitration reactor according to claim 1, characterized in that: A guide plate (8) is provided between the smoke inlet (2) and the heater (4), a plurality of flow balancing holes are evenly arranged in the guide plate (8), the flow balancing holes penetrate the guide plate (8) transversely, and the inner diameter of the flow balancing holes gradually increases in a direction from the smoke inlet (2) to the smoke outlet (3).

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