Coking flue gas desulfurization liquid filtering equipment

Abstract

The utility model discloses coking flue gas desulfurization liquid filtering equipment which comprises a desulfurization tower, a flue gas inlet is formed in the middle of the desulfurization tower, a flue gas outlet is formed in the top of the desulfurization tower, a water pipe is welded to the outer side of the desulfurization tower, and a water pump is fixedly installed at the bottom of the water pipe. The atomization assembly sprays desulfurization liquid to conduct desulfurization treatment on flue gas, the sulfur-containing flue gas reacts with the liquid and is taken away by the liquid, substances such as dust and other large-particle impurities which cannot be subjected to chemical reaction can be precipitated at the bottoms of the first precipitation disc and the second precipitation disc, after the device operates for a certain period, the first gate valve is closed, then the second gate valve is opened, and the flue gas is subjected to desulfurization treatment. At the moment, mixed liquid enters a branch pipe and rushes out from a first flushing opening, water flow flushes away impurities and precipitates, flows into a second precipitation disc from a connecting pipe and then is discharged out from a blow-off pipe, dust is prevented from being accumulated and precipitated in the device, scaling and blocking in a pipeline and the desulfurization tower are avoided, and practicability and reliability of the device are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization, in particular to a coking flue gas desulfurization liquid filtering device. Background Art

[0002] The coking industry is an important part of the coal chemical industry, one of the most important upstream industries in the steel industry, and also a key polluting industry. The sulfur dioxide and nitrogen oxides in the coke oven flue gas generated by coke oven heating will cause a series of environmental problems. Therefore, it is necessary to carry out a desulfurization process for the coking flue gas. The existing desulfurization device will directly inhale a large amount of flue gas when working, and the coking flue gas contains a large amount of dust impurities generated during combustion. These dusts cannot be decomposed by the mixed liquid in the device. Over a long period of time, the impurities accumulate and stay inside the device, which will cause serious blockage inside the device and the pipeline, affecting the desulfurization process. For this reason, a method is proposed. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted in this utility model is:

[0005] A coking flue gas desulfurization liquid filtering device comprises a desulfurization tower, wherein a smoke inlet is provided in the middle of the desulfurization tower, a smoke outlet is provided at the top of the desulfurization tower, a water pipe is welded to the outside of the desulfurization tower, a water pump is fixedly installed at the bottom of the water pipe, a water suction port is provided at the bottom end of the water pipe, an atomization assembly is fixedly installed at the top end of the water pipe, a first gate valve is arranged in the middle of the water pipe, a branch pipe is welded at a position in the middle of the water pipe close to the first gate valve, a first flushing port is provided at one end of the branch pipe, a first sedimentation tray is fixedly installed inside the desulfurization tower, a connecting pipe is fixedly connected to the bottom of the first sedimentation tray, a dust mixture inlet is provided at the top end of the connecting pipe, a second flushing port is provided at the bottom end of the connecting pipe, and a second sedimentation tray is fixedly installed at the bottom end of the connecting pipe.

[0006] Preferably, the interior of the desulfurization tower is supported by the desulfurization mixed liquid, and the bottom of the desulfurization tower is connected to the water pumping port.

[0007] Preferably, the bottom of the first sedimentation tray is fixedly connected to the first flushing port, and the bottom of the first sedimentation tray is fixedly connected to the dust mixed liquid inlet.

[0008] Preferably, the bottom of the second sedimentation tray is fixedly connected to the second flushing port, and the first sedimentation tray and the second sedimentation tray have the same structure.

[0009] Preferably, a demisting assembly is fixedly installed inside the desulfurization tower, and the demisting assembly is arranged on the top of the atomization assembly.

[0010] Preferably, a sewage pipe is fixedly connected to the bottom of the second sedimentation tray, and a second gate valve is arranged inside the sewage pipe.

[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0012] In the utility model, the atomizing component sprays the desulfurization liquid to desulfurize the flue gas, the sulfur-containing flue gas will react with the liquid and be carried away by the liquid, while the large particle impurities such as dust that cannot produce chemical reactions will settle at the bottom of the first sedimentation tray and the second sedimentation tray. After the device has been running for a period of time, the first gate valve is closed and the second gate valve is opened. At this time, the mixed liquid will enter the branch pipe and gush out from the first flushing port, the water flow will wash away the impurity sediment and flow into the second sedimentation tray from the connecting pipe, and then be discharged to the outside from the sewage pipe, so as to avoid the accumulation and precipitation of dust inside the device, resulting in scaling and blockage inside the pipeline and the desulfurization tower, thereby realizing the practicality and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0014] Figure 2 A schematic diagram of a smoke outlet according to an embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of an atomization assembly according to an embodiment of the utility model;

[0016] Figure 4 A schematic diagram of a water pump according to an embodiment of the utility model;

[0017] Figure 5 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0018] Reference numerals:

[0019] 1. Desulfurization tower; 2. Smoke inlet; 3. Smoke outlet; 4. Water pipe; 5. Water pump; 6. Atomization component; 7. First gate valve; 8. Branch pipe; 9. First flushing port; 10. First sedimentation tray; 11. Dust mixture inlet; 12. Connecting pipe; 13. Second flushing port; 14. Second sedimentation tray; 15. Drain pipe; 16. Second gate valve; 17. Water pumping port; 18. Demisting component. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0021] A coking flue gas desulfurization liquid filtering device provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0022] Example:

[0023] Combination Figure 1-5 As shown, the utility model provides a coking flue gas desulfurization liquid filtering device, including a desulfurization tower 1, a smoke inlet 2 is provided in the middle of the desulfurization tower 1, and the smoke exhaust port of a factory such as a coke oven is externally connected. A smoke outlet 3 is provided on the top of the desulfurization tower 1, and the flue gas treated by desulfurization will be discharged to the outside from here to achieve harmless treatment. A water pipe 4 is welded on the outside of the desulfurization tower 1, and a water pump 5 is fixedly installed at the bottom of the water pipe 4. A water pumping port 17 is provided at the bottom of the water pipe 4. The interior of the desulfurization tower 1 carries a desulfurized mixed liquid, and the bottom of the desulfurization tower 1 is connected to the water pumping port 17. The desulfurization mixture in the desulfurization tower 1 is continuously pumped up from the water inlet 17 into the water pipe 4 through the operation of the water pump 5 to provide a circulating supply. An atomizing assembly 6 is fixedly installed at the top of the water pipe 4. The desulfurization mixture pumped up by the water pump 5 will be atomized and sprayed out under the action of the atomizing assembly 6 to desulfurize the flue gas discharged from the smoke inlet 2 to increase the contact area. The sulfur-containing gas in the flue gas will contact with the mixed liquid to produce a chemical reaction to form a new mixed liquid, which will fall into the desulfurization tower 1 again.

[0024] Among them, a first gate valve 7 is arranged in the middle of the water pipe 4, and the flow direction of the liquid is realized by controlling the first gate valve 7 to prevent the liquid flow from being chaotic and affecting the desulfurization treatment. A branch pipe 8 is welded in the middle of the water pipe 4 near the first gate valve 7, and a first flushing port 9 is opened at one end of the branch pipe 8. When the first gate valve 7 is closed, the liquid will flow to the branch pipe 8 and then flow out from the first flushing port 9 to flush the impurities. A first sedimentation tray 10 is fixedly installed inside the desulfurization tower 1, and most of the chemically treated mixed liquid at the bottom will fall into the first sedimentation tray 10. When it accumulates to a certain extent, the mixed liquid will overflow, leaving the precipitated impurity dust at the bottom of the first sedimentation tray 10, so as to prevent dust impurities from falling into the desulfurization tower 1 and causing blockage. A connecting pipe 12 is fixedly connected to the bottom of the first sedimentation tray 10, and a dust mixed liquid inlet 11 is opened at the top of the connecting pipe 12. The mixed liquid flowing to the branch pipe 8 The mixed liquid will eventually be discharged from the first flushing port 9, flushing the sediment at the bottom of the first sedimentation tray 10, and carrying it to the dust mixed liquid inlet 11, and falling into the connecting pipe 12 to achieve cleaning. The bottom of the first sedimentation tray 10 is fixedly connected to the first flushing port 9, and the bottom of the first sedimentation tray 10 is fixedly connected to the dust mixed liquid inlet 11. A second flushing port 13 is opened at the bottom of the connecting pipe 12, and a second sedimentation tray 14 is fixedly installed at the bottom of the connecting pipe 12. The bottom of the second sedimentation tray 14 is fixedly connected to the second flushing port 13. A small part of the treated mixed liquid at the top of the desulfurization tower 1 falls into the second sedimentation tray 14, and the mixed liquid overflowing from the first sedimentation tray 10 will also flow into the second sedimentation tray 14 for secondary precipitation, thereby reducing the impurity dust from falling into the bottom of the desulfurization tower 1 again, and further avoiding the occurrence of blockage. The first sedimentation tray 10 and the second sedimentation tray 14 have the same structure.

[0025] Furthermore, a sewage pipe 15 is fixedly connected to the bottom of the second sedimentation tray 14, and a second gate valve 16 is arranged inside the sewage pipe 15. The second gate valve 16 is in a closed state under normal circumstances to prevent the liquid inside the desulfurization tower 1 from failing to circulate. When the second gate valve 16 is opened, a mixed liquid rich in a large amount of sediment will rush out of the sewage pipe 15 to clean the first sedimentation tray 10 and the second sedimentation tray 14 for repeated utilization. A defogger assembly 18 is fixedly installed inside the desulfurization tower 1. The defogger assembly 18 is arranged on the top of the atomization assembly 6 to liquefy part of the rising mist to prevent sulfur-containing compounds from being discharged to the outside and polluting the environment.

[0026] The working principle and use process of the utility model are as follows: first, after the device has been running for a period of time, the water pump 5 is started to draw the mixed liquid at the bottom of the desulfurization tower 1 into the water pipe 4, and the first gate valve 7 is closed. At this time, the mixed liquid will flow into the branch pipe 8 and be sprayed out from the first flushing port 9 to flush the precipitated impurities gathered at the bottom of the first sedimentation tray 10 into the dust mixed liquid inlet 11. At this time, the precipitated mixture will fall into the connecting pipe 12 and then flow out from the second flushing port 13 at the bottom of the connecting pipe 12 to flush the bottom of the second sedimentation tray 14 for secondary precipitation. At this time, the second gate valve 16 is opened to allow the precipitated mixture to flow out from the sewage pipe 15 to the outside.

[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A coking flue gas desulfurization liquid filtering device, comprising a desulfurization tower (1), characterized in that: A smoke inlet (2) is provided in the middle of the desulfurization tower (1), a smoke outlet (3) is provided at the top of the desulfurization tower (1), a water pipe (4) is welded to the outside of the desulfurization tower (1), a water pump (5) is fixedly installed at the bottom of the water pipe (4), a water suction port (17) is provided at the bottom end of the water pipe (4), an atomization assembly (6) is fixedly installed at the top end of the water pipe (4), a first gate valve (7) is provided in the middle of the water pipe (4), and a nozzle (2) is provided in the middle of the water pipe (4) near the first gate valve (7). A branch pipe (8) is welded at a position, a first flushing port (9) is provided at one end of the branch pipe (8), a first sedimentation tray (10) is fixedly installed inside the desulfurization tower (1), a connecting pipe (12) is fixedly connected to the bottom of the first sedimentation tray (10), a dust mixed liquid inlet (11) is provided at the top of the connecting pipe (12), a second flushing port (13) is provided at the bottom end of the connecting pipe (12), and a second sedimentation tray (14) is fixedly installed at the bottom end of the connecting pipe (12).

2. A coking flue gas desulfurization liquid filtering device according to claim 1, characterized in that: The interior of the desulfurization tower (1) is loaded with desulfurized mixed liquid, and the bottom of the desulfurization tower (1) is connected to a water pumping port (17).

3. The coking flue gas desulfurization liquid filtering equipment according to claim 1 is characterized in that: The bottom of the first sedimentation tray (10) is fixedly connected to the first flushing port (9), and the bottom of the first sedimentation tray (10) is fixedly connected to the dust mixed liquid inlet (11).

4. The coking flue gas desulfurization liquid filtering equipment according to claim 1 is characterized in that: The bottom of the second sedimentation tray (14) is fixedly connected to the second flushing port (13), and the first sedimentation tray (10) and the second sedimentation tray (14) have the same structure.

5. The coking flue gas desulfurization liquid filtering equipment according to claim 1 is characterized in that: A demisting assembly (18) is fixedly installed inside the desulfurization tower (1), and the demisting assembly (18) is arranged on the top of the atomization assembly (6).

6. The coking flue gas desulfurization liquid filtering equipment according to claim 1 is characterized in that: The bottom of the second sedimentation tray (14) is fixedly connected to a sewage discharge pipe (15), and a second gate valve (16) is arranged inside the sewage discharge pipe (15).

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