Automatic tar tank drainage device

Abstract

This utility model belongs to the technical field of drainage devices, and in particular, it is an automatic drainage device for a tar storage tank. It includes a base, a tar storage tank, and a mechanized clarification tank. The tar storage tank is fixed above the base, and a limiting bracket is welded inside the tar storage tank. A reserved channel is opened on the side wall of the limiting bracket, and a float is slidably installed on one side of the limiting bracket. A drain outlet is opened on the side wall of the tar storage tank, and one side of the drain outlet is connected to an anti-clogging connecting pipe. One end of the anti-clogging connecting pipe is fixedly connected to a drain pipe, and the flange at the end of the drain pipe is connected to the mechanized clarification tank. The float in this application uses stainless steel honeycomb filling + PTFE coating, which reduces tar adhesion and extends the cleaning cycle. The drainage flows through the anti-clogging connecting pipe and the drain pipe into a closed loop to the mechanized clarification tank, improving ammonia recovery rate and reducing wastewater treatment costs. The float, through a density gradient design, automatically tracks the oil-water interface, replacing manual valve operation and enabling remote control.

Description

Technical Field

[0001] This utility model belongs to the technical field of drainage devices, specifically relating to an automatic drainage device for tar storage tanks. Background Technology

[0002] The cooling section is a preliminary gas purification and tar separation process. The tar-ammonia mixture separated from the gas flows from the gas-liquid separator to the mechanized ammonia clarification tank. In the mechanized ammonia clarification tank, it is separated into layers according to the principle of gravity stratification. The upper part is ammonia water, and the middle and lower parts are coal tar. Coal tar is the main economic by-product of the coking plant.

[0003] Because the tar moisture content in the ammonia clarification tank is too high and does not meet the standards for external sale, the tar separated from the mechanized clarification tank needs to be transported to the tar storage tank by the intermediate tar pump for heating, settling, and dehydration to reduce the moisture content to below the specified level before being sold or further processed. The tar-ammonia mixture liquid separated from the intermediate tar tank flows by gravity to the underground tank, and is then transported by the underground tank pump to the mechanized ammonia clarification tank to complete the closed-loop operation.

[0004] The drainage of existing tar storage tanks often relies on manual labor, requiring personnel to climb to the top to operate valves. Due to the density difference of ammonia water, the stratification is unstable, which can easily cause splashing and ammonia gas leakage, resulting in burns and poisoning. Furthermore, manual observation of the funnel is prone to misjudging the interface due to interference from the tar emulsion layer, leading to incomplete drainage or tar loss. Utility Model Content

[0005] To address the problems mentioned in the background art, the drainage of existing tar storage tanks often relies on manual labor, requiring personnel to climb to the top to operate valves. Due to the density difference of ammonia water, the stratification is unstable, easily causing splashing and ammonia gas leakage, resulting in burns and poisoning. Furthermore, manual observation of the funnel is prone to misjudging the interface due to interference from the tar emulsion layer, leading to incomplete drainage or tar loss. This utility model provides an automatic drainage device for tar storage tanks.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic drainage device for a tar storage tank, comprising a base, a tar storage tank and a mechanized clarification tank, wherein a tar storage tank is fixed above the base, a limiting bracket is welded inside the tar storage tank, a reserved channel is opened on the side wall of the limiting bracket, a float is slidably installed on one side of the limiting bracket, and a longitudinal limiting groove is opened at the connection between the limiting bracket and the limiting bracket.

[0007] A drain outlet is provided on the side wall of the tar storage tank. One side of the drain outlet is connected to an anti-clogging connecting pipe. One end of the anti-clogging connecting pipe is fixedly connected to the drain pipe, and the flange at the end of the drain pipe is connected to a mechanized clarification tank.

[0008] As a preferred embodiment of the automatic drainage device for tar storage tank of this utility model, a detachable tank cover is installed on the top of the tar storage tank, and the tank cover is bolted to the tar storage tank.

[0009] As a preferred embodiment of the automatic drainage device for tar storage tank of this utility model, the float is semi-cylindrical, the float is slidably engaged with the limiting bracket through a limiting groove, and the float is covered with a PTFE coating and filled with honeycomb polymer material.

[0010] As a preferred embodiment of the automatic drainage device for tar storage tank of this utility model, a linkage shaft is installed inside the anti-clogging connecting pipe, a crushing blade is fixed on the outer wall of the linkage shaft, and one end of the linkage shaft is connected to a drive motor.

[0011] In a preferred embodiment of the automatic drainage device for tar storage tank of this utility model, the drive motor forms a rotating structure with the crushing blade through the linkage shaft. The crushing blade has a spiral interlaced double-edged structure, and the rotation axis of the crushing blade is orthogonal to the direction of water flow.

[0012] As a preferred embodiment of the automatic drainage device for tar storage tank of this utility model, the two ends of the drainage pipe are respectively flanged to the tar storage tank and the mechanized clarification tank, and a control valve is installed on the drainage pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The float in this application adopts stainless steel honeycomb filling + PTFE coating, which reduces the amount of tar adhesion, extends the cleaning cycle, and the drainage is circulated in a closed loop through the anti-clogging connection pipe and the drainage pipe to the mechanized clarification tank, which improves the ammonia recovery rate and reduces wastewater treatment costs. The float is designed with density gradient to automatically track the oil-water interface, replacing manual operation of valves and realizing remote control. This avoids the problems of existing tar storage tank drainage work requiring personnel to climb to the top to operate valves, which can easily cause burns and poisoning to workers, and the problem of incomplete drainage or tar loss due to manual observation of the funnel. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the tar storage tank in this utility model;

[0017] Figure 3 This is a schematic diagram of the limiting bracket in this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the drainage pipe in this utility model.

[0019] In the diagram: 1. Base; 2. Tar storage tank; 3. Tank cover; 4. Drain pipe; 5. Mechanized clarification tank; 6. Limiting bracket; 7. Float; 8. Limiting slide; 9. Reserved channel; 10. Drain outlet; 11. Anti-clogging connecting pipe; 12. Drive motor; 13. Linkage shaft; 14. Crushing blade; 15. Control valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] like Figures 1-4 As shown;

[0023] An automatic drainage device for a tar storage tank includes a base 1, a tar storage tank 2, and a mechanized clarification tank 5. The tar storage tank 2 is fixed above the base 1. A limiting bracket 6 is welded inside the tar storage tank 2. A reserved channel 9 is opened on the side wall of the limiting bracket 6. A float 7 is slidably installed on one side of the limiting bracket 6. A longitudinal limiting groove 8 is opened at the connection between the limiting brackets 6 and the limiting bracket 2. A drain outlet 10 is opened on the side wall of the tar storage tank 2. One side of the drain outlet 10 is connected to an anti-blocking connecting pipe 11. One end of the anti-blocking connecting pipe 11 is fixedly connected to a drain pipe 4. The end flange of the drain pipe 4 is connected to the mechanized clarification tank 5.

[0024] In this implementation plan: the float 7 of this application adopts stainless steel honeycomb filling + PTFE coating, which reduces the amount of tar adhesion, extends the cleaning cycle, and the drainage is circulated in a closed loop through the anti-clogging connection pipe 11 and the drainage pipe 4 to the mechanized clarification tank 5, which improves the ammonia recovery rate and reduces the wastewater treatment cost. The float 7 automatically tracks the oil-water interface through density gradient design, replacing manual operation of valves and realizing remote control.

[0025] In an optional embodiment, a removable cover 3 is installed on top of the tar storage tank 2, and the cover 3 is bolted to the tar storage tank 2.

[0026] In this implementation plan, the bolt connection design facilitates the disassembly and installation of the cover 3, saving time spent on internal cleaning.

[0027] In an optional embodiment, the float 7 is semi-cylindrical, and the float 7 is slidably engaged with the limiting bracket 6 through the limiting groove 8. The float 7 is covered with a PTFE coating and filled with honeycomb polymer material.

[0028] In this implementation scheme: the PTFE coating reduces tar adhesion, and the honeycomb polymer filling enables precise buoyancy control and reduces liquid level tracking error.

[0029] In an optional embodiment, a linkage shaft 13 is installed inside the anti-clogging connecting pipe 11, and a crushing blade 14 is fixed on the outer wall of the linkage shaft 13. One end of the linkage shaft 13 is connected to a drive motor 12. The drive motor 12 and the crushing blade 14 form a rotating structure through the linkage shaft 13. The crushing blade 14 has a spiral interlaced double-edged structure, and the rotation axis of the crushing blade 14 is orthogonal to the direction of water flow.

[0030] In this implementation scheme: the drive motor 12 drives the crushing blade 14 to rotate through the linkage shaft 13, and the blade can crush solid impurities, ensuring unobstructed pipeline. The spiral interlaced double blade has high crushing efficiency, and the orthogonal water flow design increases the residence time of impurities, making it easier to crush them thoroughly.

[0031] In an optional embodiment, the drain pipe 4 is flanged at both ends to the tar storage tank 2 and the mechanized clarification tank 5, and a control valve 15 is installed on the drain pipe 4.

[0032] In this implementation plan: Control valve 15 is a V-type ball valve with a flow rate adjustment range of 0.5-2m³. 3 / h.

[0033] Working principle:

[0034] The tar-ammonia-water mixture was allowed to stand and dehydrate in tar storage tank 2. Since the water layer density was approximately 1 g / cm³, 3 The density of the tar layer is approximately 1.2 g / cm³. 3 Therefore, the water layer floats above the tar layer, and the float 7 passes through a depth of 0.95-1.05 g / cm³. 3 The density gradient design allows it to suspend at the oil-water interface, and its PTFE coating and honeycomb filling structure prevent adhesion.

[0035] When the liquid level is lower than the drain outlet 10, the float 7 sinks to the bottom of the limit bracket 6, the drain outlet 10 opens, the liquid level rises and pushes the float 7 to move up along the limit slide 8, the top of the elliptical cylinder presses and seals the drain outlet 10, thus preventing tar from overflowing.

[0036] When water flows through the anti-clogging connection pipe 11, the drive motor 12 drives the crushing blade 14 to rotate through the linkage shaft 13, and the blade can crush solid impurities to ensure the pipe is unobstructed.

[0037] Drainage flows through drain pipe 4 into mechanized clarification tank 5 for re-stratification. Control valve 15 regulates the flow rate. The tank cover 3 is designed to be removable for easy cleaning of residues inside the limit bracket 6.

[0038] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic drainage device for a tar storage tank, comprising a base (1), a tar storage tank (2), and a mechanized clarification tank (5), characterized in that: A tar storage tank (2) is fixed above the base (1). A limiting bracket (6) is welded inside the tar storage tank (2). A reserved channel (9) is opened on the side wall of the limiting bracket (6). A float (7) is slidably installed on one side of the limiting bracket (6). A longitudinal limiting groove (8) is opened at the connection between the limiting bracket (6) and the limiting bracket (6). The tar storage tank (2) has a drain outlet (10) on its side wall. One side of the drain outlet (10) is connected to an anti-blocking connecting pipe (11). One end of the anti-blocking connecting pipe (11) is fixedly connected to a drain pipe (4). The end flange of the drain pipe (4) is connected to a mechanized clarification tank (5).

2. The automatic drainage device for tar storage tank according to claim 1, characterized in that: The tar storage tank (2) is equipped with a detachable cover (3) on top, and the cover (3) is bolted to the tar storage tank (2).

3. The automatic drainage device for tar storage tank according to claim 1, characterized in that: The float (7) is semi-cylindrical. The float (7) is slidably engaged with the limiting bracket (6) through the limiting groove (8). The float (7) is covered with a PTFE coating and filled with honeycomb polymer material.

4. The automatic drainage device for tar storage tank according to claim 1, characterized in that: The anti-blocking connecting pipe (11) is equipped with a linkage shaft (13), and the outer wall of the linkage shaft (13) is fixed with a crushing blade (14). One end of the linkage shaft (13) is connected to a drive motor (12).

5. The automatic drainage device for tar storage tank according to claim 4, characterized in that: The drive motor (12) forms a rotating structure with the crushing blade (14) through the linkage shaft (13). The crushing blade (14) has a spiral interlaced double-edged structure, and the rotation axis of the crushing blade (14) is orthogonal to the direction of water flow.

6. The automatic drainage device for tar storage tank according to claim 1, characterized in that: The drain pipe (4) is flanged at both ends to the tar storage tank (2) and the mechanized clarification tank (5), and a control valve (15) is installed on the drain pipe (4).

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