Anti-blocking system for desulfurization oxidation air pipe

Abstract

The utility model particularly discloses a desulfurization oxidation air pipe anti-blocking system which comprises an oxidation air pipe main pipeline, and a pressure transmitter is arranged on the oxidation air pipe main pipeline. The oxidation air pipe branch pipes are communicated with the oxidation air pipe main pipeline, branch pipe valves are arranged on the oxidation air pipe branch pipes, and the oxidation air pipe branch pipes operate independently; the plurality of flushing pipelines are in one-to-one correspondence with the plurality of oxidation air pipe branch pipes, and flushing pipeline valves are arranged on the flushing pipelines. According to the utility model, the blockage condition in the branch pipe can be accurately judged, the condition that the slurry oxidation effect of the desulfurization tower is insufficient during operation is effectively avoided, and certain guiding significance is provided for the safe operation and maintenance work of the absorption tower.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization absorption towers, in particular to a desulfurization oxidation air duct anti-blocking system. Background Art

[0002] The oxidation air system of the desulfurization absorption tower is an important component of the desulfurization system. An oxidation fan is used to pump a large amount of air into the absorption tower to force oxidation of calcium sulfite. The oxygen introduced by the oxidation air duct reacts with sulfur dioxide and oxidizes it into calcium sulfate. If the oxidation efficiency of the oxidation air duct is low, the calcium sulfite cannot be fully oxidized, which will cause poisoning of the slurry in the absorption tower, resulting in a decrease in desulfurization efficiency and the concentration of sulfur dioxide emitted exceeding the requirement. Therefore, it is of great significance to reasonably design the oxidation air duct and ensure sufficient oxidation efficiency for achieving the desulfurization effect. The technical supervision indicators of the oxidation air duct of the existing production team are rough, and it is impossible to accurately judge the blockage point of the oxidation air duct. Utility Model Content

[0003] In order to improve the problem of blockage in an absorption tower, the utility model provides a desulfurization oxidation air duct anti-blockage system.

[0004] The utility model provides a desulfurization oxidation air duct anti-blocking system adopts the following technical solutions:

[0005] A desulfurization oxidation air duct anti-blocking system, comprising:

[0006] The oxidation air duct main pipeline is provided with a pressure transmitter on the oxidation air duct main pipeline;

[0007] Multiple oxidation air duct branches are connected to the oxidation air duct main pipeline, and branch valves are provided on the oxidation air duct branches for independent operation;

[0008] The plurality of flushing pipes correspond to the plurality of oxidation air duct branches one by one, and flushing pipe valves are arranged on the flushing pipes.

[0009] Furthermore, an anti-corrosion coating is provided inside the oxidation air duct main pipe, the plurality of oxidation air duct branches and the plurality of flushing pipes.

[0010] Furthermore, the main pipeline of the oxidation air duct adopts a straight line design, and buffer elbows are provided where necessary.

[0011] Furthermore, the turning angle of the buffer elbow is less than 45 degrees.

[0012] Furthermore, the diameter of the oxidation air duct branch is 25-35 cm.

[0013] Furthermore, the distance between every two oxidation air duct branches is 1.3-1.7m.

[0014] Furthermore, the branch pipe valve and the flushing pipe valve are both solenoid valves.

[0015] Furthermore, a tee pipe is provided at the connection between the oxidation air duct main pipe and the plurality of oxidation air duct branch pipes.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects:

[0017] 1. Automatic monitoring: This system automatically monitors the pressure changes in the oxidation air duct through the pressure transmitter, without manual intervention, which improves the accuracy and efficiency of monitoring;

[0018] 2. Efficient flushing: Based on real-time monitoring data, the system can find the blockage point in a timely and accurate manner and flush accurately, thus ensuring the smooth flow of the oxidation air duct and improving the desulfurization efficiency of the absorption tower;

[0019] 3. Technical supervision: It makes up for the lack of methods to monitor the blockage of the oxidation air system during operation;

[0020] 4. This system determines the blockage of the oxidation air duct of the desulfurization absorption tower through real-time monitoring of the pressure transmitter and judgment of pressure changes during flushing, etc., to accurately determine the blockage in the branch pipe, effectively preventing the insufficient oxidation effect of the slurry in the desulfurization tower during operation, and has certain guiding significance for the safe operation and maintenance of the absorption tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0022] Figure numerals: 1. Desulfurization absorption tower; 2. Oxidation air duct main pipeline; 3. Pressure transmitter; 4. Oxidation air duct branch pipe; 5. Flushing pipeline; 6. Branch pipe valve; 7. Tee pipe; 8. Flushing pipeline valve. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] The utility model embodiment discloses a desulfurization oxidation air duct anti-blocking system. Figure 1 The desulfurization oxidation air duct anti-blocking system includes an oxidation air duct main pipe 2, on which a pressure transmitter 3 is arranged; a plurality of oxidation air duct branches 4 are connected to the oxidation air duct main pipe 2, on which branch pipe valves 6 are arranged for independent operation; a plurality of flushing pipes 5, corresponding to the plurality of oxidation air duct branches 4 one by one, and flushing pipe valves 8 are arranged on the flushing pipes 5. Both the branch pipe valves 6 and the flushing pipe valves 8 are solenoid valves.

[0025] The utility model is equipped with a high-precision pressure transmitter 3, which can monitor the pressure of the oxidation air duct in real time. The sensor inside the pressure transmitter 3 transmits the monitoring data to the control console for monitoring. By monitoring the changes in the oxidation air duct pressure, the blockage of the oxidation air duct main pipe 2 can be determined; by closing the branch pipe valve 6, the blockage of each branch pipe can be determined, and the blockage problem of the oxidation air duct can be accurately determined by observing the changes in the pipeline pressure before and after flushing. Regular maintenance plan formulates a detailed maintenance and inspection plan, regularly cleans the oxidation air duct, monitors potential blockage sources, ensures long-term and reliable operation of the system, and effectively reduces the blockage of the oxidation air duct of the desulfurization absorption tower 1, thereby improving overall operation efficiency and safety.

[0026] Reference Figure 1 An anti-corrosion coating is arranged inside the oxidation air duct main pipe 2, multiple oxidation air duct branches 4 and multiple flushing pipes 5 to reduce the adhesion and accumulation of corrosive substances, provide a smooth surface for the fluid, and reduce pressure loss and blockage risks.

[0027] Reference Figure 1 The layout of the main duct 2 of the oxidation air duct of the desulfurization absorption tower 1 follows a certain flow direction and avoids unnecessary curves, including: adopting a straight line design to reduce any form of bends and sharp turns to ensure smooth airflow; setting appropriate buffer elbows where necessary to reduce the instantaneous changes in airflow and make the turning angle less than 45 degrees.

[0028] Reference Figure 1 According to the diameter of the desulfurization absorption tower 1, the oxidation air duct branch 4 should be reasonably set at a distance to enhance the stability of the air flow and reduce the difficulty of operation during operation and maintenance. The diameter of the oxidation air duct branch 4 is set to 25-35 cm, and the distance between every two oxidation air duct branches 4 is 1.3-1.7m. The pipeline spacing and performance meet the GB / T1447 and GB / T1449 specifications to ensure that tools and personnel can enter and exit freely during maintenance and repair. There are multiple pipelines, and they are suspended to ensure that they are properly spaced to avoid mutual influence.

[0029] A tee pipe 7 is provided at the connection between the oxidation air duct main pipe 2 and the plurality of oxidation air duct branches 4. The design of the tee pipe 7 takes into account the balanced flow distribution and the adaptation to the system requirements. The tee pipe 7 is provided at the key point where the system needs to divert the flow, so as to evenly distribute the flow to different branches. The number of tees 7 is minimized. Excessive diversion will increase the complexity of the airflow, thereby increasing the risk of blockage. In summary, this embodiment considers designing 8 oxidation air duct branches 4 and 6 tees 7.

[0030] The utility model pressure transmitter continuously monitors the pressure change in the oxidation air duct. The sensor transmits the monitored data to the control console. The eight oxidation air branch pipes operate independently of each other. Close the manual door of one oxidation air branch pipe separately. Observe the change of the pressure transmitter when closing. If the pressure rises, it means that this pipe is not completely blocked. The higher the pressure rises, the more serious the blockage of the remaining branches. Close the manual door of one oxidation air branch pipe separately, open the corresponding flushing water manual door for flushing. The flushing time is five minutes. Compare the pressure changes of the oxidation air duct before and after flushing. If the pressure drops after flushing, it means that the blockage of the oxidation air duct has been alleviated.

[0031] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A desulfurization and oxidation air duct anti-blocking system, characterized in that: include: The oxidation air duct main pipeline is provided with a pressure transmitter on the oxidation air duct main pipeline; Multiple oxidation air duct branches are connected to the oxidation air duct main pipeline, and branch valves are provided on the oxidation air duct branches for independent operation; The plurality of flushing pipes correspond to the plurality of oxidation air duct branches one by one, and flushing pipe valves are arranged on the flushing pipes.

2. A desulfurization and oxidation air duct anti-blocking system according to claim 1, characterized in that: Anti-corrosion coatings are arranged inside the oxidation air duct main pipe, the plurality of oxidation air duct branches and the plurality of flushing pipes.

3. A desulfurization and oxidation air duct anti-blocking system according to claim 1, characterized in that: The main pipeline of the oxidation air duct adopts a straight line design, and buffer elbows are arranged where necessary.

4. A desulfurization and oxidation air duct anti-blocking system according to claim 3, characterized in that: The turning angle of the buffer elbow is less than 45 degrees.

5. A desulfurization and oxidation air duct anti-blocking system according to claim 1, characterized in that: The diameter of the oxidation air duct branch is 25-35 cm.

6. A desulfurization and oxidation air duct anti-blocking system according to claim 1, characterized in that: The distance between every two oxidation air duct branches is 1.3-1.7m.

7. A desulfurization and oxidation air duct anti-blocking system according to claim 1, characterized in that: The branch pipe valve and flushing pipeline valve are both solenoid valves.

8. The desulfurization and oxidation air duct anti-blocking system according to claim 1 is characterized by: A tee pipe is arranged at the connection between the oxidation air duct main pipe and the plurality of oxidation air duct branch pipes.

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