Flue gas denitrification flue guide plate device

Abstract

The utility model relates to the technical field of flue gas denitration, in particular to a flue gas denitration flue guide plate device which comprises an outer guide plate, first welding plates are fixedly installed on the two sides of the outer guide plate, a partition plate is fixedly installed on one side in the outer guide plate, and an inner guide mechanism is arranged on the side, away from the partition plate, in the outer guide plate. The flue body is protected through the outer flow guide plate, flue gas can be prevented from moving through the flue body for a long time during flow guide, so that the flue body cannot be damaged when the flue gas contains corrosive gas, the whole flow guide plate structure can be supported through the supporting plate, and the service life of the flue is prolonged. Therefore, the flow guide plate structure can be prevented from flapping when a large amount of smoke moves, and the flow guide plate structure is prevented from falling off.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flue gas denitration, specifically is a flue gas denitration flue guide plate device. BACKGROUND

[0002] Nitrogen oxide (NOx) is one of the main atmospheric pollutants, and is also an important reason for the formation of regional fine particle pollution and haze. The nitrogen oxide emission of the thermal power industry is huge, and it is urgently needed to be controlled. With the implementation of the "thermal power plant air pollutant emission standard" (GB13223-2011), medium and large coal-fired power plants basically need to use SCR denitration to meet the emission requirements of nitrogen oxide. However, most of the SCR flue gas denitration technologies are still in the stage of digestion and initial application. The company also upgrades and optimizes the traditional SCR denitration technology to improve the denitration efficiency and the stability of the system to meet the requirements of flue gas denitration of coal-fired power plants. The flue gas denitration flue guide plate device is a device for guiding the flue gas in the denitration flue.

[0003] As disclosed in a flue gas denitration flue guide plate device with the authorized announcement number CN205164507U, a plurality of parallel guide plates are installed in the flue bend, the guide plates are arc-shaped, and the two ends of the guide plates are provided with support members. An inner rod is arranged in the flue bend, and the support members are fixed to the end portions of the inner rod. In the patent, it is mentioned that the guide plates are arranged in the flue bend before the flue gas denitration enters the flue gas distributor to avoid vortex and oscillation of the flue gas in the flue, which affects the uniformity of the mixture. The flue gas flow rate distribution entering the SCR reactor is uniform, which promotes the stable operation of the flue gas denitration reactor system.

[0004] However, the guide plate device mentioned in the patent can only guide the flow and cannot protect the flue. Therefore, when the flue gas containing corrosive gas flows through the top of the flue for a long time, the flue will be damaged. In addition, the guide plates in the patent are not supported, and when a large amount of flue gas enters, the guide plates will be agitated. Therefore, the guide plate welding position will fall off after long-term operation. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a flue gas denitration flue guide plate device to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A flue gas denitration flue guide plate device, comprising an outer guide plate, a first welding plate is fixedly installed on both sides of the outer guide plate, a partition plate is fixedly installed on one side of the inner part of the outer guide plate, and an inner guide mechanism is arranged on the side of the inner part of the outer guide plate away from the partition plate.

[0008] Preferably, the inner flow guide mechanism comprises inner flow guide plates, support plates are fixedly installed between the inner flow guide plates, and the support plates are fixedly installed inside the outer flow guide plates away from the partition plates.

[0009] Preferably, second welding plates are fixedly installed on both sides of the inner flow guide plates, and the second welding plates and the first welding plates are fixedly installed on one side inside the flue body.

[0010] Preferably, heating plates are fixedly installed on one side inside the flue body away from the inner flow guide plates and the outer flow guide plates, and catalytic plates are fixedly installed on one side inside the flue body close to the heating plates.

[0011] Compared with the prior art, the flue gas denitration flue flow guide plate device has the beneficial effects that:

[0012] 1. The flue gas denitration flue flow guide plate device protects the flue body through the outer flow guide plates, so that the flue gas can avoid moving through the flue body for a long time when flowing, and therefore the flue body will not be damaged when the flue gas contains corrosive gas.

[0013] 2. The flue gas denitration flue flow guide plate device can support the entire flow guide plate structure through the support plates, so that the flow guide plate structure can avoid being agitated and falling off when a large amount of flue gas moves. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the outer flow guide plate of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the inner flow guide mechanism of the utility model;

[0017] Figure 4 It is a schematic diagram of the plane structure of the flue body of the utility model.

[0018] In the drawing: 101, outer flow guide plate; 102, first welding plate; 103, partition plate; 104, inner flow guide mechanism; 105, inner flow guide plate; 106, support plate; 201, second welding plate; 202, flue body; 203, heating plate; 204, catalytic plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0020] Please refer to Figures 1-4 The technical solutions provided by the present application are as follows:

[0021] The flue gas denitration flue guide plate device comprises an outer guide plate 101, first welding plates 102 are fixedly installed on both sides of the outer guide plate 101, a partition plate 103 is fixedly installed on one side of the inner part of the outer guide plate 101, and an inner guide mechanism 104 is arranged on the side, away from the partition plate 103, of the inner part of the outer guide plate 101.

[0022] Through the above scheme, the outer guide plate can guide the flue gas and protect the flue body at the same time, the first welding plate can facilitate welding by the installation personnel, and the partition plate can divide the flue gas after being guided, so that the flue gas can enter the heating plate more uniformly.

[0023] In the embodiment, preferably, the inner guide mechanism 104 comprises inner guide plates 105, support plates 106 are fixedly installed between the inner guide plates 105, and the support plates 106 are fixedly installed on the side, away from the partition plate 103, of the inner part of the outer guide plate 101.

[0024] Through the above scheme, the support plates can support the inner guide plates and the outer guide plate, so that the overall guide plate is prevented from being agitated by a large amount of flue gas, and the inner guide plates can guide the flue gas.

[0025] In the embodiment, preferably, second welding plates 201 are fixedly installed on both sides of the inner guide plates 105, and the second welding plates 201 and the first welding plates 102 are fixedly installed on one side of the inner part of a flue body 202.

[0026] Through the above scheme, the second welding plates can facilitate the installation personnel to weld and fix the inner guide plates, and the second welding plates and the first welding plates are fixedly installed in the inner part of the flue body, so that the overall guide plate device is fixed.

[0027] In the embodiment, preferably, a heating plate 203 is fixedly installed on the side, away from the inner guide plates 105 and the outer guide plate 101, of the inner part of the flue body 202, and a catalytic plate 204 is fixedly installed on the side, close to the heating plate 203, of the inner part of the flue body 202.

[0028] Through the above scheme, the flue gas after flow guiding can be heated by the heating plate, and the heated flue gas can be decomposed by the catalytic plate, so that the nitrate in the flue gas is decomposed into water and ammonia.

[0029] The flue gas denitration flue guide plate device of the embodiment is used in the following manner: the user welds the partition plate 103 on one side inside the outer guide plate 101, then welds the outer guide plate 101 and the inner guide plate 105 through the support plate 106, and then welds the first welding plate 102 and the second welding plate 201 with the inner part of the flue body 202 after welding, so that the overall guide plate structure is assembled and fixed. When denitration is performed, the flue gas entering the flue body 202 will be mixed with ammonia water, and the flue gas containing ammonia water enters the overall guide plate structure through airflow. At this time, the outer guide plate 101 protects the top end inside the overall flue body 202, so that the flue gas will not move along the top end inside the flue body 202 for a long time during flow guiding. Therefore, when the flue gas contains corrosive gas, the flue body 202 will not be damaged. In addition, when the flue gas moves a lot, the support plate 106 supports between the inner guide plate 105 and the outer guide plate 101, avoiding the flue gas driving the guide plate structure to be agitated, thereby avoiding the guide plate structure from falling off due to long-term agitation. After the flue gas is guided by the guide plate structure, it moves to the partition plate 103 and is divided, so that the flue gas is dispersed. The dispersed flue gas enters the heating plate 203 and can be heated more uniformly. Then, the heated flue gas continues to move and is catalyzed by the catalytic plate 204, so that the nitrate in the flue gas is decomposed into ammonia and water.

[0030] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A flue gas denitrification flue guide plate device, characterized in that: It includes an outer guide plate (101), on both sides of the outer guide plate (101) a first welding plate (102) is fixedly installed, a dividing plate (103) is fixedly installed on one side inside the outer guide plate (101), and an inner guide mechanism (104) is provided on the side of the outer guide plate (101) away from the dividing plate (103).

2. The flue gas denitrification flue gas guide plate device according to claim 1, characterized in that: The inner guide mechanism (104) includes an inner guide plate (105), and a support plate (106) is fixedly installed between the inner guide plates (105). The support plate (106) is fixedly installed inside the outer guide plate (101) on the side away from the dividing plate (103).

3. The flue gas denitrification flue guide plate device according to claim 2, characterized in that: The inner guide plate (105) is fixedly installed on both sides with a second welding plate (201), and the second welding plate (201) and the first welding plate (102) are fixedly installed on one side inside the flue body (202).

4. The flue gas denitrification flue guide plate device according to claim 3, characterized in that: A heating plate (203) is fixedly installed inside the flue body (202) on the side away from the inner guide plate (105) and the outer guide plate (101), and a catalytic plate (204) is fixedly installed inside the flue body (202) on the side close to the heating plate (203).

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