Anti-blocking cleaning device for horizontal flue of reaction tower

Abstract

The utility model discloses an anti-blocking cleaning device for a horizontal flue of a reaction tower, which comprises the reaction tower, a bag-type dust collector and the horizontal flue, the horizontal flue is arranged between the reaction tower and the bag-type dust collector, a group of spray heads are respectively arranged at trisection positions of the total length of the horizontal flue, each group of spray heads consists of three flat spray nozzles which are longitudinally distributed, branch pipelines are arranged at the bottoms of the flat nozzles, all the branch pipelines are converged to a main pipeline, the main pipeline is connected with an air cannon, and a sound wave soot blower is arranged above the nozzles. The sound wave soot blower is arranged on the inner wall of the horizontal flue, the sound wave soot blower is used in cooperation with the air cannon, secondary raising, settling and adhering early-stage fly ash is impacted, the fly ash is carried to the downstream by means of flue gas, nozzles are reasonably arranged, the settling and adhering fly ash is alternately conveyed, the purpose of treating blockage is achieved, use is convenient, operation is easy, and the cost is low. The construction cost is reduced, the working efficiency is improved, and the construction safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to a waste incinerator flue cleaning device, and more particularly to a reaction tower horizontal flue anti-clogging cleaning device, belonging to the field of coke removal technology. Background Technology

[0002] With the development of domestic waste incineration technology, waste-to-energy incineration has become the mainstream trend of comprehensive waste utilization. The emission standards for flue gas pollutants in the waste-to-energy incineration industry are becoming increasingly stringent, leading to a greater input of auxiliary materials for pollutant removal. After waste incineration, the particle size in the flue gas increases dramatically. After semi-dry and dry acid removal processes, the particle size also increases simultaneously. Because these particles have significant agglomeration properties, sedimentation and caking easily occur in the horizontal flue gas duct area of ​​the reaction tower, clogging the flue gas passages. This results in increased induced draft fan current, which in severe cases can cause the waste incinerator to shut down, and even more seriously, can cause the dust collector to collapse due to overload, resulting in huge losses. To address these issues, the traditional cleaning method involves manual blowing with compressed air. This method requires a large amount of manpower, is time-consuming, and inefficient. Furthermore, during cleaning, the manhole doors need to be kept open for extended periods, allowing large amounts of cold air to enter the flue gas system. The condensation of acidic flue gas causes severe corrosion of the entire system, further increasing the difficulty of cleaning. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a horizontal flue anti-clogging and cleaning device for reaction towers. In high-temperature and high-dust environments, it can quickly clean away clogged fly ash, thereby saving daily labor costs, reducing plant power consumption, improving the reliability and durability of equipment operation, reducing the risk of safety accidents, and reducing environmental risks.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] A device for preventing blockage and cleaning a horizontal flue of a reaction tower includes a reaction tower, a bag filter, and a horizontal flue. The horizontal flue is provided between the reaction tower and the bag filter. Each of the three equal sections of the total length of the horizontal flue is provided with a set of nozzles. Each set of nozzles consists of three longitudinally distributed flat nozzles. The bottom of each flat nozzle is provided with a branch pipe, and all the branch pipes converge into a main pipe. The main pipe is connected to an air cannon. An acoustic soot blower is provided at the top of the horizontal flue.

[0006] There are a total of 9 flat nozzles, which are located on the inner wall of the bottom of the horizontal flue.

[0007] There are two sonic soot blowers, located on the upper side of the split surface of the horizontal flue.

[0008] The acoustic soot blower is provided with an insulated outer shell, and a needle-punched felt with a thickness of 100mm is laid between the acoustic soot blower and the insulated outer shell.

[0009] The opening angle of the flat nozzle is 30°-60°.

[0010] The positive and beneficial effects of this utility model are:

[0011] 1. This utility model, by setting nozzles on the inner wall of the horizontal flue and using air cannons, can quickly clean up the clogged fly ash, reduce construction costs, improve work efficiency, and is convenient and easy to use.

[0012] 2. This utility model uses an acoustic soot blower installed on the inner wall of a horizontal flue, in conjunction with an air cannon, to impact and agitate the initial fly ash that has settled and adhered, and then carry it downstream with the help of flue gas. The nozzles are arranged in a reasonable manner to alternately transfer and transport the settled and adhered fly ash, thereby achieving the purpose of clogging. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a schematic diagram of the nozzle structure of this utility model;

[0016] Figure 4 This is a side view of the nozzle of this utility model;

[0017] Among them: 1-Horizontal flue, 2-Flat nozzle, 3-Branch pipe, 4-Solenoid valve, 5-Main pipe, 6-Air cannon, 7-Sonic soot blower. Detailed Implementation

[0018] The present invention will be further explained and described below with reference to the accompanying drawings:

[0019] See the example. Figures 1-4 A device for preventing blockage and cleaning a horizontal flue of a reaction tower includes a reaction tower, a bag filter, and a horizontal flue 1. The horizontal flue 1 is set between the reaction tower and the bag filter. A set of nozzles is set in three equal sections of the total length of the horizontal flue 1. Each set of nozzles consists of three longitudinally distributed flat nozzles 2. Branch pipes 3 are set at the bottom of the flat nozzles 2, and all branch pipes 3 converge to a main pipe 5. The main pipe 5 is connected to an air cannon 6. An acoustic soot blower 7 is set at the upper part of the horizontal flue 1.

[0020] There are nine flat nozzles 2, which are located on the inner wall at the bottom of the horizontal flue 1.

[0021] There are two sonic soot blowers 7, located on the upper side of the split surface of the horizontal flue 1.

[0022] An insulating shell is provided on the outside of the sonic soot blower 7, and a needle-punched felt with a thickness of 100mm is laid between the sonic soot blower 7 and the insulating shell.

[0023] In the above description, the horizontal flue of the reaction tower is divided into three equal parts along its total length. At the bottom of each section, three three-channel air cannon fan-shaped nozzles (duck-shaped nozzles) are installed side-by-side, totaling three groups of nine nozzles. The nozzle diffusion angle is 30°-60°, and the nozzle material is Q345B or 304 stainless steel. The bottom of the nozzles passes through the circular flue base plate and connects to the DN50 branch pipe of the air cannon. Each branch is equipped with an on / off type electromagnetic ball valve or pneumatic ball valve. Each furnace horizontal flue is equipped with at least one air cannon, with a capacity of at least 100 liters, and is equipped with an inlet valve, pressure gauge, pressure relief valve, and solenoid valve. The nozzles are arranged along the flue gas flow direction.

[0024] In the above description, at each of the three equal divisions along the total length of the horizontal flue at the outlet of the reaction tower, two low-frequency acoustic sootblowers are installed on the upper side of the dividing surface. The acoustic sootblowers are equipped with metal connecting hoses, solenoid valves, pressure regulating filter valves, PLCs or circuit boards, control boxes, etc. The acoustic sootblowers need to be covered with 100mm thick needle-punched felt and wrapped with thermal insulation iron or aluminum sheet.

[0025] This invention utilizes a sonic soot blower installed on the inner wall of a horizontal flue, in conjunction with an air cannon, to agitate and lift the initial settling and adhering fly ash through impact. The fly ash is then carried downstream by the flue gas. By rationally arranging nozzles to alternately transfer and transport the settling and adhering fly ash, the blockage is effectively controlled. This invention is convenient to use, simple to operate, reduces construction costs, improves work efficiency, and ensures construction safety.

Claims

1. A device for preventing blockage and cleaning a horizontal flue in a reaction tower, comprising a reaction tower, a bag filter, and a horizontal flue (1), wherein the horizontal flue (1) is provided between the reaction tower and the bag filter, characterized in that: A set of nozzles is provided at each of the three equal divisions of the total length of the horizontal flue (1). Each set of nozzles consists of three longitudinally distributed flat nozzles (2). A branch pipe (3) is provided at the bottom of the flat nozzle (2), and all the branch pipes (3) converge to the main pipe (5). The main pipe (5) is connected to the air cannon (6). An acoustic soot blower (7) is provided at the upper part of the horizontal flue (1).

2. The anti-clogging and cleaning device for a horizontal flue of a reaction tower according to claim 1, characterized in that: There are a total of 9 flat nozzles (2), which are located on the inner wall of the bottom of the horizontal flue (1).

3. The anti-clogging and cleaning device for a horizontal flue of a reaction tower according to claim 1, characterized in that: There are two sonic soot blowers (7), which are located on the upper side of the dividing surface of the horizontal flue (1).

4. The anti-clogging and cleaning device for a horizontal flue of a reaction tower according to claim 3, characterized in that: The acoustic soot blower (7) is provided with an insulating shell, and a needle-punched felt is laid between the acoustic soot blower (7) and the insulating shell, the needle-punched felt being 100mm thick.

5. The anti-clogging and cleaning device for a horizontal flue of a reaction tower according to claim 1, characterized in that: The opening angle of the flat nozzle (2) is 30°-60°.

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