Slurry circulation pulse anti-precipitation device for limestone slurry tank of thermal power plant

Abstract

The utility model relates to the technical field of mechanical engineering, in particular to a slurry circulation pulse anti-sedimentation device for a limestone slurry tank of a thermal power plant. The utility model discloses a slurry circulation pulse anti-sedimentation device for a limestone slurry tank of a thermal power plant. The slurry circulation pulse anti-sedimentation device comprises a limestone feeding device, an outlet main pipeline electric valve, an outlet main pipeline, a tower-entering branch pipe, a tower-entering branch pipe valve and the limestone slurry tank, the limestone feeding device is connected with the outlet main pipeline, and the outlet main pipeline electric valve is located at the joint of the limestone feeding device and the outlet main pipeline; the limestone slurry tank is connected with the outlet main pipeline through a tower-entering branch pipe, and the tower-entering branch pipe is provided with the tower-entering branch pipe valve. The device can maintain the operation of the tank when the stirring fails, determines the washing time according to the slurry condition, is low in manufacturing cost, simple and convenient to operate, safe and stable, and effectively solves the problem of slurry precipitation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a slurry circulation pulse anti-sedimentation device for limestone slurry tanks in thermal power plants. Background Technology

[0002] With rapid economic development, environmental pollution has become increasingly prominent. As a key sector of energy production, thermal power plants' flue gas emissions have become a major source of air pollution. Therefore, flue gas treatment in thermal power plants has become a core task for enterprises to fulfill their environmental responsibilities and respond to environmental protection policies, and desulfurization technology is a crucial link in this process.

[0003] In desulfurization systems, limestone slurry plays a crucial role as a core raw material for removing harmful substances from flue gas. Limestone, after being crushed and ground into powder, is mixed with water in a specific ratio to form a slurry. This slurry has a high density and contains a large number of stone particles. During storage, due to numerous uncontrollable factors within the slurry tank, such as the complexity of liquid flow, localized temperature and concentration differences, and the difficulty in achieving uniform mixing using traditional stirring methods, the slurry is highly prone to sedimentation.

[0004] Once sedimentation forms, it can trigger a series of serious problems. In pipelines, the precipitated solid particles can gradually accumulate and clog the pipes, hindering the normal transport of the slurry and affecting the continuity of the desulfurization process. Within the slurry tank, uneven sedimentation can lead to an imbalance in slurry distribution, with severe gypsum accumulation in some areas, further exacerbating the sedimentation problem and even causing the slurry to solidify. This not only significantly reduces desulfurization efficiency, increases energy consumption and raw material waste, but can also, in severe cases, cause equipment damage, rendering the entire desulfurization system unable to operate normally, resulting in high maintenance costs and production losses.

[0005] Therefore, it is urgent to develop an efficient, reliable and economical limestone slurry tank anti-sedimentation device to ensure the stable operation of the desulfurization system, improve the environmental protection efficiency of thermal power plants, and contribute to the development of my country's environmental protection cause. Utility Model Content

[0006] The purpose of this invention is to provide a pulse anti-sedimentation device for limestone slurry tank circulation in thermal power plants, so as to solve the problems mentioned in the background art.

[0007] A limestone slurry tank circulation pulse anti-sedimentation device for a thermal power plant includes a limestone feeding device, an electric valve for the main outlet pipe, the main outlet pipe, an inlet branch pipe, an inlet branch pipe valve, and a limestone slurry tank.

[0008] The limestone feeding device is connected to the outlet main pipeline, and the electric valve of the outlet main pipeline is located at the connection between the limestone feeding device and the outlet main pipeline;

[0009] The limestone slurry tank is connected to the main outlet pipe via several inlet branch pipes, each of which is equipped with an inlet branch pipe valve.

[0010] Furthermore, the outlet pipe surrounds the limestone slurry tank.

[0011] Furthermore, the limestone slurry tank is cylindrical, and the outlet main pipe surrounds the limestone slurry tank.

[0012] Furthermore, the branch pipes entering the tower are evenly distributed around the limestone slurry tank.

[0013] Furthermore, the inlet branch pipe branches vertically from the pipe surrounding the limestone slurry tank and inserts into the limestone slurry tank.

[0014] Furthermore, the outlet pipe is made of 2205 stainless steel pipe.

[0015] Furthermore, the limestone feeding device includes a limestone slurry circulation pump.

[0016] Furthermore, the electric valve for the main outlet pipeline is a remotely adjustable electric valve.

[0017] Furthermore, the remotely adjustable electric valve is an electric butterfly valve.

[0018] Furthermore, the valve on the inlet branch pipe is a manual valve.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. Improved system stability: When the limestone slurry tank agitator malfunctions, this device can ensure the tank continues to operate normally, avoiding the shutdown of the entire desulfurization system due to local failures. This greatly enhances the stability and reliability of the system operation and ensures the continuity of the desulfurization process in thermal power plants.

[0021] 2. Optimize operational flexibility and energy efficiency: The flushing time can be flexibly determined according to the slurry density and the actual sedimentation situation inside the tank, and the flushing operation can be precisely controlled. This prevents energy waste caused by excessive flushing and avoids the aggravation of sedimentation problems caused by insufficient flushing. While ensuring the anti-sedimentation effect, it does not affect the normal operation of the slurry pump, thus achieving efficient and energy-saving operation.

[0022] 3. Reduced Costs and Convenient Operation: The device features a rational structural design and low-cost materials. It eliminates the need for a dedicated high-pressure pump, reducing equipment purchase and operating costs. Operation is simple, combining remote control via electric valves and on-site adjustment via manual valves, facilitating maintenance and management and effectively reducing labor costs and operational complexity. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 Diagram of a limestone slurry tank slurry circulation pulse anti-sedimentation device;

[0025] The components include: 1. Limestone feeding device; 2. Main outlet pipe; 3. Electric valve for main outlet pipe; 4. Branch pipe for inlet; 5. Branch pipe valve for inlet; and 6. Limestone slurry tank. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following is in conjunction with the appendix Figure 1 Specific embodiments are described in detail below:

[0028] like Figure 1 As shown, a limestone slurry tank circulation pulse anti-sedimentation device for a thermal power plant includes a limestone feeding device 1, an outlet main pipe 2, an outlet main pipe electric valve 3, an inlet branch pipe 4, an inlet branch pipe valve 5, and a limestone slurry tank 6.

[0029] The limestone feeding device 1 is connected to the outlet main pipe 2. The outlet main pipe electric valve 3 is located at the connection between the limestone feeding device 1 and the outlet main pipe 2, and is used to control the switch to control the flow and flow of the slurry.

[0030] The limestone slurry tank 6 is connected to the main outlet pipe 2 via inlet branch pipes 4. There are several inlet branch pipes 4, and each inlet branch pipe 4 is equipped with an inlet branch pipe valve 5 to control the opening and closing of the inlet branch pipe 4. When there is a serious accumulation of gypsum in an area inside the limestone slurry tank 6, some inlet branch pipe valves can be closed to enhance the flushing effect of slurry flow and pressure at the accumulation location.

[0031] Furthermore, the main outlet pipe 2 surrounds the limestone slurry tank 6.

[0032] Furthermore, the limestone slurry tank 6 is cylindrical, and the main outlet pipe 2 is circumferentially surrounding the limestone slurry tank 6.

[0033] Furthermore, the branch pipes 4 entering the tower are evenly distributed around the limestone slurry tank 6.

[0034] The inlet branch pipes 4 are distributed around the bottom of the limestone slurry tank 6. The installation distance and number are determined according to the outlet flow rate of the slurry pump and the circumference of the slurry tank to ensure that all areas at the bottom of the tank can be effectively flushed and to avoid dead corners.

[0035] Furthermore, the inlet branch pipe 4 is vertically branched off from the pipe surrounding the limestone slurry tank 6 and inserted into the interior of the limestone slurry tank 6. The vertical structure helps the stability of the inlet branch pipe 4 and prevents the pipe from bending due to lateral forces.

[0036] Furthermore, the main outlet pipe 2 is made of 2205 stainless steel, which has excellent corrosion resistance and can effectively resist the erosion of limestone slurry, ensuring long-term stable operation of the pipeline and reducing maintenance and replacement costs. It also possesses high strength and toughness, and is not easily deformed or damaged when subjected to slurry erosion and certain pressure, ensuring the integrity and reliability of the device structure, extending the service life of the device, and thus guaranteeing the continuous and efficient operation of the desulfurization system in the thermal power plant.

[0037] Furthermore, the limestone feeding device 1 includes a limestone slurry circulation pump to provide sufficient fluid power for the conveying of limestone.

[0038] Furthermore, the outlet main pipeline electric valve 3 is a remotely adjustable electric valve, which can be controlled by a remote computer program.

[0039] Furthermore, the remotely adjustable electric valve is an electric butterfly valve, which has the advantages of convenient remote operation, precise flow control, and high degree of automation.

[0040] Furthermore, the inlet branch valve 5 is a manual valve, which is simple, stable, and practical in structure.

[0041] Working principle:

[0042] The slurry in the limestone slurry tank 6 is driven by the limestone slurry circulation pump of the limestone feeding device 1, flowing from the pump outlet into the main outlet pipe 2. The electric valve 3 of the main outlet pipe can be remotely controlled, and the timing and flow rate of the slurry entering the subsequent pipe can be controlled by opening or closing the electric valve to achieve operations such as periodic flushing.

[0043] The slurry then flows into the inlet branch pipe 4, which is connected to the main outlet pipe 2. The inlet branch pipe 4 is distributed around the bottom of the limestone slurry tank 6. The installation distance and number are determined according to the slurry pump outlet flow rate and the circumference of the slurry tank to ensure that all areas at the bottom of the tank can be effectively flushed and to avoid dead corners.

[0044] The manual inlet valve 5 on each inlet branch pipe can be adjusted according to the actual situation. When gypsum is severely silted up in certain areas inside the slurry tank, some valves can be manually closed to allow more slurry to flow to the severely silted areas, increasing the slurry flow and pressure in those areas, thereby enhancing the flushing effect on the silted areas.

[0045] Throughout the process, the limestone slurry circulation pump of the limestone feeding device 1 within the limestone slurry tank 6 serves as the power source to achieve self-circulating pulse flushing of the slurry, eliminating the need for an additional high-pressure pump. This circulating pulse flushing mechanism effectively prevents limestone slurry sedimentation within the tank, ensuring stable system operation. Furthermore, the flushing time and valve status can be flexibly adjusted according to slurry density and sedimentation levels within the tank, without affecting the normal operation of the slurry pump and ensuring the efficient operation of the entire desulfurization process system.

[0046] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A pulse anti-sedimentation device for limestone slurry tank circulation in a thermal power plant, characterized in that, It includes a limestone feeding device, an electric valve for the main outlet pipe, the main outlet pipe, the inlet branch pipe, the inlet branch pipe valve, and a limestone slurry tank. The limestone feeding device is connected to the outlet main pipeline, and the electric valve of the outlet main pipeline is located at the connection between the limestone feeding device and the outlet main pipeline; The limestone slurry tank is connected to the main outlet pipe via several inlet branch pipes, each of which is equipped with an inlet branch pipe valve.

2. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 1, characterized in that, The outlet pipe surrounds the limestone slurry tank.

3. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 2, characterized in that, The limestone slurry tank is cylindrical, and the outlet main pipe surrounds the limestone slurry tank.

4. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 1, characterized in that, The inlet branch pipes are evenly distributed around the limestone slurry tank.

5. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 3, characterized in that, The inlet branch pipe branches vertically from the pipe surrounding the limestone slurry tank and is inserted into the limestone slurry tank.

6. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 1, characterized in that, The main outlet pipe is made of 2205 stainless steel.

7. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 1, characterized in that, The limestone feeding device includes a limestone slurry circulation pump.

8. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 1, characterized in that, The electric valve for the main outlet pipeline is a remotely adjustable electric valve.

9. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 8, characterized in that, The remotely adjustable electric valve is an electric butterfly valve.

10. The limestone slurry tank slurry circulation pulse anti-sedimentation device for thermal power plants according to claim 1, characterized in that, The valve on the inlet branch pipe is a manual valve.

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