SCR (Selective Catalytic Reduction) reaction device

Abstract

The utility model provides an SCR (Selective Catalytic Reduction) reaction device, which relates to the technical field of reaction devices and comprises a reaction cylinder body, an air inlet flange plate is fixedly arranged at one end of the reaction cylinder body, an air inlet taper pipe is fixedly arranged in the reaction cylinder body, and an air outlet flange plate is fixedly arranged at the other end of the reaction cylinder body. Through the arrangement of the reaction cylinder body, the gas inlet flange plate, the gas inlet taper pipe, the gas outlet flange plate, the NOx sensor, the exhaust temperature sensor, the supporting plate, the catalysis unit, the fixing plate, the fixing frame and the motor structure, when the device is used, through the arrangement of the rotating rod and the spiral blade structure, the full contact between gas and the catalysis unit can be effectively improved; the whole catalytic efficiency is effectively improved, nitrogen oxides can be efficiently converted, more harmful ingredients are prevented from remaining in tail gas, and the increasingly strict environment-friendly emission standard is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to reaction device technical field especially relates to a SCR reaction device. BACKGROUND

[0002] In the early stage of the rapid development of industry, various factories discharged a large amount of waste gas containing nitrogen oxides (NOx) and other pollutants into the atmosphere, which caused serious harm to the environment and human health. In order to solve this problem, people began to explore effective tail gas treatment methods, and SCR reaction device gradually developed under such background.

[0003] But as far as traditional equipment is concerned, the traditional device of this kind often lacks a special air inlet guide structure in the air inlet link, and the gas is relatively disordered when entering the reaction cylinder, which makes it difficult to disperse evenly, so that the contact between the gas and the catalytic unit is not sufficient, the catalytic reaction can only be carried out better in the local area, the overall catalytic efficiency is difficult to improve, and the nitrogen oxides cannot be converted efficiently, resulting in that there are still many harmful components in the tail gas, which is difficult to meet the increasingly strict environmental emission standards, and needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the technical problems in the background.

[0005] The utility model adopts the following technical scheme: a SCR reaction device, including reaction cylinder, one end of the reaction cylinder is fixedly installed with air inlet flange plate, the inside of the reaction cylinder is fixedly installed with air inlet cone pipe, the other end of the reaction cylinder is fixedly installed with air outlet flange plate, the surface of the other end of the reaction cylinder is fixedly installed with NOx sensor and exhaust temperature sensor, the inside of the reaction cylinder is fixedly installed with supporting plate, the surface of the supporting plate is fixedly installed with catalytic unit, the surface of the reaction cylinder is fixedly installed with fixed plate, the surface of the reaction cylinder is fixedly installed with fixed frame, the surface of the fixed frame is fixedly installed with motor, the output end of the motor is fixedly installed with gear one, the surface of gear one is fixedly installed with gear two, the inside of the fixed plate is sleeved with annular rack, the inside of the fixed plate is sleeved with gear three, the surface of gear three is fixedly installed with gear four, the outer surfaces of gear four and gear one are all sleeved with synchronous belt, the inside of the other end of synchronous belt is sleeved with gear five, the surface of gear five is fixedly installed with rotating rod, the surface of rotating rod is fixedly installed with spiral blade.

[0006] Preferably, the number of the catalytic units is six and is circumferentially distributed at the rear end of the support plate, the rotating rods and the spiral blades are sleeved in the catalytic units, and the number of the rotating rods and the spiral blades is six. Here, the number of the catalytic units is six and is circumferentially distributed at the rear end of the support plate, the rotating rods and the spiral blades are also sleeved in the catalytic units and the number of the rotating rods and the spiral blades is six, the circumferentially distributed catalytic units can make the gas entering the reaction cylinder pass through each catalytic unit for reaction, ensure that the gas can be fully catalyzed in the whole reaction cylinder, avoid the situation that the reaction is insufficient in some parts, and improve the overall efficiency and treatment effect of the SCR reaction. The six groups of rotating rods and spiral blades are correspondingly distributed in the catalytic units, can comprehensively and uniformly clean the surface of each catalytic unit, ensure that each catalytic unit can maintain a good working state, will not affect the overall catalytic performance due to the accumulation of dust and impurities in some parts, further improve the operation stability of the device and the service life of the catalytic units, and ensure the continuous and efficient SCR reaction.

[0007] Preferably, the surface of the gear one is engaged with the surface of the synchronous belt, the surface of the gear four is engaged with the surface of the synchronous belt, the surface of the gear five is engaged with the surface of the synchronous belt, and the number of the gear five and the synchronous belt is six and is circumferentially distributed in the support plate. Here, the surface of the gear one is engaged with the surface of the synchronous belt, the surface of the gear four is engaged with the surface of the synchronous belt, the surface of the gear five is engaged with the surface of the synchronous belt, and the number of the gear five and the synchronous belt is six and is circumferentially distributed in the support plate. Through these precise engagement relationships, the power output by the motor can be accurately and stably transmitted to each gear five along the synchronous belt, thereby driving the corresponding rotating rods and spiral blades to rotate, ensuring the continuity and reliability of power transmission.

[0008] Preferably, the surface of the ring gear is engaged with the surface of the gear two, the surface of the ring gear is engaged with the surface of the gear three, and the gear two is sleeved in the fixed plate. Here, it is ensured that the power can be smoothly transmitted from the motor to each spiral blade, the spiral blade can be effectively rotated and cleaned, the flexibility and reliability of the transmission structure of the device are improved, and the layout of the whole transmission system is more compact and reasonable, which adapts to the space limitation of the reaction cylinder.

[0009] Preferably, the number of support plates is two groups, which are fixedly installed inside the reaction cylinder body, and the two groups of support plates are connected and fixed through the catalytic unit, and the gear five and the synchronous belt are sleeved inside the front end support plate.

[0010] Preferably, a limiting plate is fixedly installed on the surface of the reaction cylinder body, a spring is fixedly installed on the surface of the limiting plate, a sealing sleeve is sleeved on the outer surfaces of the gas inlet flange plate and the gas outlet flange plate, and a sealing ring is fixedly installed on the inner surface of the sealing sleeve.

[0011] Preferably, the material of the sealing ring is soft silica gel material, the number of the sealing rings is multiple and the sealing rings are arranged in an array on the inner surface of the sealing sleeve, the shape of the sealing ring is semicircular, and the rear end of the sealing sleeve is attached to the surfaces of the gas inlet flange plate and the gas outlet flange plate.

[0012] Preferably, one end of the spring is connected and fixed to the surface of the limiting plate, the other end of the spring is connected and fixed to the rear end surface of the sealing sleeve, and the number of the limiting plates is two and the two limiting plates are arranged near the rear ends of the gas inlet flange plate and the gas outlet flange plate.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that:

[0014] 1、The utility model discloses a reaction cylinder, gas flange plate, gas inlet cone pipe, gas flange plate, NOx sensor, exhaust temperature sensor, support plate, catalytic unit, fixed plate, fixing frame, motor structure are set up, when the equipment uses, through setting up rotary rod, spiral blade structure, can effectively improve the full contact of gas and catalytic unit, effectively promote the catalytic efficiency of whole, can convert nitrogen oxide efficiently, avoid the harmful component still remaining in tail gas, satisfy the increasingly strict environmental protection emission standard.

[0015] 2、The utility model discloses a limiting plate, spring, sealing sleeve, sealing ring structure are set up, when connecting with external pipeline, spring can provide certain elastic buffer force, make sealing sleeve can adjust the position self -adaptation, ensure that sealing ring and external pipeline surface close -fit, make up the sealing gap due to pipeline installation error, thermal expansion and cold shrink and other factors, improved the sealing property that flange plate was connected with external pipeline, prevented gas leakage, guaranteeed the air tightness of whole SCR reaction device, ensured that the reaction was stably carried out under the closed environment, also avoided the environmental pollution and energy waste etc. of the problem of bad sealing, improved the reliability and environmental protection performance of device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic diagram of SCR reaction device is provided for the utility model;

[0017] Figure 2 A sectional structure schematic diagram of SCR reaction device is provided for the utility model;

[0018] Figure 3 An internal structure schematic diagram of SCR reaction device is provided for the utility model;

[0019] Figure 4 An annular rack structure schematic diagram of SCR reaction device is provided for the utility model;

[0020] Figure 5 SCR reaction device is provided for the utility model Figure 2 The utility model discloses an enlarged view of A place in.

[0021] Legend:

[0022] 1, reaction cylinder; 2, gas inlet flange plate; 3, gas inlet cone tube; 4, gas outlet flange plate; 5, NOx sensor; 6, exhaust temperature sensor; 7, support plate; 8, catalytic unit; 9, fixed plate; 10, fixed frame; 11, motor; 12, gear one; 13, gear two; 14, ring gear; 15, gear three; 16, gear four; 17, synchronous belt; 18, gear five; 19, rotating rod; 20, spiral blade; 21, limit plate; 22, spring; 23, sealing sleeve; 24, sealing ring. DETAILED DESCRIPTION

[0023] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced without the specific details, which are different from the description, and therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0025] Embodiment one

[0026] Please refer to Figures 1-5The utility model provides a technical scheme: a kind of SCR reaction device, including reaction cylinder 1, the one end of reaction cylinder 1 is fixedly installed with air inlet flange 2, the inside of reaction cylinder 1 is fixedly installed with air inlet cone tube 3, the other end of reaction cylinder 1 is fixedly installed with air outlet flange 4, the surface of the other end of reaction cylinder 1 is fixedly installed with NOx sensor 5 and exhaust temperature sensor 6, the inside of reaction cylinder 1 is fixedly installed with support plate 7, the surface of support plate 7 is fixedly installed with catalytic unit 8, the surface of reaction cylinder 1 is fixedly installed with fixed plate 9, the surface of reaction cylinder 1 is fixedly installed with fixed frame 10, the surface of fixed frame 10 is fixedly installed with motor 11, the output end of motor 11 is fixedly installed with gear one 12, the surface of gear one 12 is fixedly installed with gear two 13, annular rack 14 is sleeved in the inside of fixed plate 9, gear three 15 is sleeved in the inside of fixed plate 9, gear four 16 is fixedly installed on the surface of gear three 15, the outer surface of gear four 16 and gear one 12 is all sleeved with synchronous belt 17, the other end inside of synchronous belt 17 is sleeved with gear five 18, gear five 18 is fixedly installed on the surface of rotating rod 19, helical blade 20 is fixedly installed on the surface of rotating rod 19, first, reaction cylinder 1 is installed in corresponding work site, air inlet pipeline is stably connected with air inlet flange 2, air outlet pipeline is stably connected with air outlet flange 4, motor 11 is started, motor 11 drives gear one 12 to rotate, gear one 12 drives gear two 13 to rotate, then rotate gear two 13 drives annular rack 14 to rotate, then rotate annular rack 14 drives gear three 15 to rotate, then rotate gear three 15 drives gear four 16 to rotate, then rotate gear four 16 and gear one 12 drives synchronous belt 17 to move, then synchronous belt 17 moves and drives gear five 18 to rotate, gear five 18 drives rotating rod 19 to rotate, rotating rod 19 drives helical blade 20 to rotate in catalytic unit 8, then, after being treated gas enters reaction cylinder 1 through air inlet cone tube 3, after uniform dispersion, it is fully contacted with catalytic unit 8 and carries out SCR reaction, after reaction, gas flows to air outlet flange 4 direction and is discharged, in this process, NOx sensor 5 monitors nitrogen oxides content in exhaust gas in real time, exhaust temperature sensor 6 monitors reaction cylinder 1 temperature condition in real time, according to sensor feedback data, reaction condition is adjusted as needed, guaranteeing that reaction is stable and efficient.

[0027] Please refer to Figures 1-5The number of the catalytic units 8 is six groups and is distributed in the circumference of the rear end of the support plate 7, the rotating rod 19 and the spiral blade 20 are sleeved in the inside of the catalytic unit 8, the number of the rotating rod 19 and the spiral blade 20 is six groups, the surface of the gear one 12 is engaged with the surface of the synchronous belt 17, the surface of the gear four 16 is engaged with the surface of the synchronous belt 17, the surface of the gear five 18 is engaged with the surface of the synchronous belt 17, the number of the gear five 18 and the synchronous belt 17 is six groups and is distributed in the inside of the support plate 7 in the circumference, the surface of the annular rack 14 is engaged with the surface of the gear two 13, the surface of the annular rack 14 is engaged with the surface of the gear three 15, the gear two 13 is sleeved in the inside of the fixed plate 9, the number of the support plate 7 is two groups and is fixedly installed in the inside of the reaction cylinder 1, the two groups of the support plate 7 are connected and fixed through the catalytic unit 8, the gear five 18 and the synchronous belt 17 are sleeved in the inside of the front end support plate 7, the material of the sealing ring 24 is soft silica gel material, the number of the sealing ring 24 is multiple groups and is distributed in the inside surface of the sealing sleeve 23 in the array, the shape of the sealing ring 24 is semicircular, the rear end of the sealing sleeve 23 is combined with the surface of the air inlet flange plate 2 and the air outlet flange plate 4, one end of the spring 22 is connected and fixed with the surface of the limiting plate 21, the other end of the spring 22 is connected and fixed with the rear end surface of the sealing sleeve 23, the number of the limiting plate 21 is two groups and is close to the rear end of the air inlet flange plate 2 and the air outlet flange plate 4, one end of the spring 22 is connected and fixed with the surface of the limiting plate 21, the other end is connected and fixed with the rear end surface of the sealing sleeve 23, the connecting mode makes the spring 22 can buffer the external force through the stretching and contraction of itself when the sealing sleeve 23 is subjected to the external force, protects the sealing structure from being damaged, at the same time ensures that the sealing sleeve 23 always maintains the appropriate sealing position and maintains the good sealing state.

[0028] Example two

[0029] Please refer to Figures 1-3 The surface of the reaction cylinder 1 is fixedly installed with the limiting plate 21, the surface of the limiting plate 21 is fixedly installed with the spring 22, the outer surface of the air inlet flange plate 2 and the air outlet flange plate 4 is sleeved with the sealing sleeve 23, the inside surface of the sealing sleeve 23 is fixedly installed with the sealing ring 24, when the external pipeline is connected, first the hand is contacted with the surface of the sealing sleeve 23, then the sealing sleeve 23 is pulled, the sealing sleeve 23 is moved to drive the spring 22 to shrink, then the sealing sleeve 23 is moved away from the surface of the air inlet flange plate 2 and the air outlet flange plate 4, then the external pipeline is connected, after the connection is completed, then the hand is separated from the surface of the sealing sleeve 23, then the spring 22 is reset, the sealing sleeve 23, the air inlet flange plate 2 and the air outlet flange plate 4 and the surface of the external pipeline are contacted, then the sealing ring 24 is contacted with the connection part of the air inlet flange plate 2, the air outlet flange plate 4 and the external pipeline, and the sealing is realized.

[0030] Working principle: when the device is in use, first hand and the surface of the sealing sleeve 23 contact, then pull the sealing sleeve 23, through the sealing sleeve 23 movement drive spring 22 to shrink movement, then through the sealing sleeve 23 movement and the surface of the air flange plate 2 and air flange plate 4 off, then the external pipeline is connected, after the connection, the hand and the surface of the sealing sleeve 23 off, then through the spring 22 reset movement, that is, the sealing sleeve 23 and the air flange plate 2, air flange plate 4 and the surface of the external pipeline contact, then the sealing ring 24 and the air flange plate 2, air flange plate 4 and the external pipeline contact, that is, sealing, then start the motor 11, the motor 11 drive gear one 12 rotation, gear two 13 rotation, then through the gear two 13 rotation drive ring gear 14 rotation, then through the ring gear 14 rotation drive gear three 15 rotation, then through the gear three 15 rotation drive gear four 16 rotation, then through the gear four 16 and gear one 12 rotation drive synchronous belt 17 movement, then through the synchronous belt 17 movement drive gear five 18 rotation, gear five 18 drive rotation rod 19 rotation, rotation rod 19 drive helical blade 20 rotation in the catalytic unit 8, then the gas to be treated into the reaction cylinder 1 through the air cone tube 3, uniform dispersion and catalytic unit 8 fully contact for SCR reaction, the reaction gas flows to the air flange plate 4 direction and is discharged, in this process, the NOx sensor 5 real-time monitoring of nitrogen oxides content in the exhaust gas, exhaust temperature sensor 6 real-time monitoring of reaction cylinder 1 temperature, according to the sensor feedback data as needed to adjust the reaction conditions, guarantee the reaction stable and efficient.

[0031] The above is only the preferred embodiment of the present application, not other forms of the present application limit, any skilled in the art of technical personnel may use the above disclosed technology content to change or modification of equivalent changes equivalent embodiments applied to other fields, but any simple modification, equivalent changes and modification of the above embodiments, which do not deviate from the technical scheme of the present application, according to the technical essence of the present application, still belong to the protection scope of the present application technical scheme.

Claims

1. An SCR reactor device comprising a reactor barrel (1), characterized in that: One end of the reaction cylinder (1) is fixedly installed with an air inlet flange (2), the inside of the reaction cylinder (1) is fixedly installed with an air inlet cone (3), the other end of the reaction cylinder (1) is fixedly installed with an air outlet flange (4), the surface of the other end of the reaction cylinder (1) is fixedly installed with a NOx sensor (5) and an exhaust temperature sensor (6), the inside of the reaction cylinder (1) is fixedly installed with a support plate (7), the surface of the support plate (7) is fixedly installed with a catalytic unit (8), the surface of the reaction cylinder (1) is fixedly installed with a fixed plate (9), the surface of the reaction cylinder (1) is fixedly installed with a fixed frame (10), the surface of the fixed frame (10) is fixedly installed with a motor (11), the output end of the motor (11) is fixedly installed with a gear one (12), the surface of the gear one (12) is fixedly installed with a gear two (13), the inside of the fixed plate (9) is sleeved with an annular gear rack (14), the inside of the fixed plate (9) is sleeved with a gear three (15), the surface of the gear three (15) is fixedly installed with a gear four (16), the outer surfaces of the gear four (16) and the gear one (12) are both sleeved with a synchronous belt (17), the other end inside of the synchronous belt (17) is sleeved with a gear five (18), the surface of the gear five (18) is fixedly installed with a rotating rod (19), the surface of the rotating rod (19) is fixedly installed with a spiral blade (20).

2. The SCR reactor of claim 1, wherein: The number of the catalytic unit (8) is six groups and is circumferentially distributed at the rear end of the support plate (7), the rotating rod (19) and the spiral blade (20) are sleeved in the catalytic unit (8), and the number of the rotating rod (19) and the spiral blade (20) is both six groups.

3. The SCR reactor of claim 1, wherein: The surface of the gear one (12) is engaged with the surface of the synchronous belt (17), the surface of the gear four (16) is engaged with the surface of the synchronous belt (17), the surface of the gear five (18) is engaged with the surface of the synchronous belt (17), and the number of the gear five (18) and the synchronous belt (17) is both six groups and is circumferentially distributed in the inside of the support plate (7).

4. The SCR reactor of claim 1, wherein: The surface of the annular gear rack (14) is engaged with the surface of the gear two (13), the surface of the annular gear rack (14) is engaged with the surface of the gear three (15), and the gear two (13) is sleeved in the inside of the fixed plate (9).

5. The SCR reactor of claim 1, wherein: The number of the support plate (7) is two groups and is fixedly installed in the inside of the reaction cylinder (1), the two groups of support plates (7) are fixedly connected through the catalytic unit (8), and the gear five (18) and the synchronous belt (17) are sleeved in the inside of the front support plate (7).

6. The SCR reactor of claim 1, wherein: The surface of the reaction cylinder (1) is fixedly installed with a limiting plate (21), the surface of the limiting plate (21) is fixedly installed with a spring (22), the outer surfaces of the air inlet flange (2) and the air outlet flange (4) are both sleeved with a sealing sleeve (23), and the inside surface of the sealing sleeve (23) is fixedly installed with a sealing ring (24).

7. An SCR reaction device according to claim 6, characterized in that: The material of the sealing ring (24) is soft silica gel material, the number of the sealing ring (24) is multiple and is arrayed on the inner surface of the sealing sleeve (23), the shape of the sealing ring (24) is semicircular, and the rear end of the sealing sleeve (23) is attached to the surfaces of the air inlet flange (2) and the air outlet flange (4).

8. An SCR reaction device according to claim 6, characterized in that: One end of the spring (22) is connected and fixed to the surface of the limiting plate (21), the other end of the spring (22) is connected and fixed to the rear end surface of the sealing sleeve (23), and the number of the limiting plate (21) is two and is located close to the rear ends of the air inlet flange (2) and the air outlet flange (4).

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