Non-condensable gas treatment system for lubricating oil regeneration system

Abstract

The utility model relates to a non-condensable gas treatment system for a lubricating oil regeneration system, which comprises a dehydrating tower, a primary tower, a vacuum tower and a cylindrical heating furnace, the tower tops of the primary tower and the vacuum tower are connected to a gas inlet pipe of a first cooler through pipelines, and a gas outlet pipe of the first cooler is connected to a gas inlet pipe on the side wall of a first vacuum tank through a pipeline; a gas outlet pipe at the top of the first vacuum tank is connected to a gas inlet pipe of a water-sealed tank through a pipeline, a gas outlet pipe of the water-sealed tank is connected to a non-condensable gas liquid separation tank through a pipeline, the non-condensable gas liquid separation tank is connected to a gas inlet pipe of a flame retardant device through a pipeline, and a gas outlet pipe of the flame retardant device is connected to a gas inlet pipe of a cylindrical heating furnace; a bypass is arranged on a pipeline from the water-sealed tank to the non-condensable gas liquid separation tank, and a washing tank is mounted on the bypass; a turning plate liquid level meter is arranged in the washing tank; and the end part of the air inlet pipe of the washing tank in the tank body is 1m away from the inner bottom of the tank body. And by arranging the washing tank, colloid and scorched particles carried in the non-condensable gas are effectively removed.

Description

Technical Field

[0001] The utility model relates to a non-condensable gas treatment system for a lubricating oil regeneration system, belonging to the technical field of non-condensable gas treatment in the lubricating oil regeneration field. Background Art

[0002] In the lubricating oil regeneration system, in the dehydration tower, primary distillation tower and pressurization tower, non-condensable gas will be discharged from the top of the tower, and the generated non-condensable gas will be concentrated in the cylindrical heating furnace for combustion treatment. Before entering the cylindrical heating furnace, it will pass through the flame retardant, which plays a role in safety control. However, since the non-condensable gas generated in the lubricating oil regeneration contains colloid and coke particles, the presence of these substances leads to a large amount of deposition in the pipeline, especially in the flame retardant, in actual production, affecting the working efficiency of the system, and the flame retardant often needs to be maintained or even replaced. Utility Model Content

[0003] In view of the problems existing in the prior art, a non-condensable gas treatment system for a lubricating oil regeneration system is provided.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A non-condensable gas treatment system for a lubricating oil regeneration system comprises a dehydration tower, a primary distillation tower, a pressure reducing tower and a cylindrical heating furnace, wherein the special feature of the system is that the tops of the primary distillation tower and the pressure reducing tower are connected to the air inlet pipe of a first cooler through pipelines, the air outlet pipe of the first cooler is connected to the air inlet pipe of the side wall of a first vacuum tank through a pipeline, the air outlet pipe on the top of the first vacuum tank is connected to the air inlet pipe of a water seal tank through a pipeline, the air outlet pipe of the water seal tank is connected to the non-condensable gas separator tank through a pipeline, the non-condensable gas separator tank is connected to the air inlet pipe of a flame retardant through a pipeline, and the air outlet pipe of the flame retardant is connected to the air inlet pipe of the cylindrical heating furnace; a bypass is arranged on the pipeline from the water seal tank to the non-condensable gas separator tank, and a water washing tank is installed on the bypass; a flap level gauge is arranged in the water washing tank; the end of the air inlet pipe of the water washing tank in the tank body is 1m away from the bottom of the tank body.

[0006] The advantage of the above technical solution is that by adding a water washing tank to the system, the non-condensable gas is passed into the water washing tank to remove colloid and coke particles in the non-condensable gas, thereby reducing the factors causing flame retardants and pipeline blockage.

[0007] On the basis of the above technical solution, this application makes the following improvements and perfections to the above technical solution:

[0008] Furthermore, the top of the dehydration tower is connected to the air inlet pipe of the second cooling tank through a pipe, the air outlet pipe of the second cooling tank is connected to the air inlet pipe on the side wall of the second vacuum tank through a pipe, and the top of the second vacuum tank is connected to the air inlet pipe of the water seal tank through a pipe.

[0009] The function of the above technical features in this application is: the gas discharged from the top of the dehydration tower has a very high temperature and is cooled by the second cooling tank.

[0010] Furthermore, a second vacuum pump is installed on the pipeline from the second vacuum tank to the air inlet pipe of the water seal tank; the bottom of the second vacuum tank is connected to the feed pipe of the water seal tank through a pipeline.

[0011] Furthermore, a first vacuum pump is installed on the pipeline from the first vacuum tank to the water seal tank; the bottom of the first vacuum tank is connected to the feed pipe of the water seal tank through a pipeline.

[0012] The function of the above-mentioned technical features in this application is: the first vacuum pump and the second vacuum pump adopt a water ring vacuum pump, and the water in the water seal tank can be used to supply water to the first vacuum pump and the second vacuum pump. The first vacuum pump passes the gas in the extraction tank at the top of the first vacuum tank into the water seal tank for separation and treatment, and the second vacuum pump has the same working principle; the mixture generated at the bottom of the first vacuum tank is transported to the water seal tank for separation, and in the water seal tank, the oil body in the upper layer is transported out for storage or further treatment, and the water in the lower layer can be recycled. After the non-condensable gas is separated in the water seal tank, it is sent to the water washing tank for further removal of the colloid and coke particles therein; the mixture sent into the water seal tank from the bottom of the vacuum tank will also contain some non-condensable gas, and this part of the non-condensable gas is mixed with the non-condensable gas at the top.

[0013] Furthermore, a glass tube level gauge is installed on the side wall of the water washing tank.

[0014] The beneficial effect of the above technical features in the present application is: by installing a glass tube liquid level meter, the interface of the liquid level in the tank body is observed so as to control the separation of the oil body in the tank body.

[0015] The advantages of the non-condensable gas treatment system for the lubricating oil regeneration system designed in this application are:

[0016] By setting up a water washing tank, the colloid and coke particles carried in the non-condensable gas are effectively removed, reducing the blockage in the pipeline, especially at the flame retardant;

[0017] Installing a flap level gauge in the washing tank can control the liquid level in the tank to avoid overflowing from a full tank.

[0018] A glass tube level gauge is installed on the side wall of the water washing tank to observe the interface of the liquid level in the tank. When the oil-liquid interface is obvious and the depth of the oil above reaches a certain depth, the liquid can be separated through the discharge pipe on the side wall to remove the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of a non-condensable gas treatment system for a lubricating oil regeneration system according to the present application.

[0020] The accompanying drawings are marked as follows: 1. Dehydration tower; 2. Primary distillation tower; 3. Pressure reducing tower; 4. First cooler; 5. First vacuum tank; 6. First vacuum pump; 7. Water seal tank; 8. Non-condensable gas separator tank; 9. Flame arrester; 10. Cylindrical heating furnace; 11. Second cooler; 12. Second vacuum tank; 13. Second vacuum pump; 14. Water washing tank. DETAILED DESCRIPTION

[0021] The following embodiments, in conjunction with the accompanying drawings, are only intended to illustrate the technical solutions described in the claims and are not intended to limit the protection scope of the claims.

[0022] Combined with Figure 1 A non-condensable gas treatment system for a lubricating oil regeneration system comprises a dehydration tower 1, a primary distillation tower 2, a vacuum tower 3 and a cylindrical heating furnace 10, the tops of the primary distillation tower 2 and the vacuum tower 3 are connected to the air inlet pipe of a first cooler 4 through a pipeline, the air outlet pipe of the first cooler 4 is connected to the air inlet pipe of the side wall of a first vacuum tank 5 through a pipeline, the air outlet pipe at the top of the first vacuum tank 5 is connected to the air inlet pipe of a water seal tank 7 through a pipeline, and a first vacuum pump 6 is installed on the pipeline from the first vacuum tank 5 to the water seal tank 7; the bottom of the first vacuum tank 5 is connected to the air inlet pipe of the first vacuum tank 5 through a pipeline. The feed pipe of the water seal tank 7; the air outlet pipe of the water seal tank 7 is connected to the non-condensable gas separator tank 8 through a pipeline, the non-condensable gas separator tank 8 is connected to the air inlet pipe of the flame retardant 9 through a pipeline, and the air outlet pipe of the flame retardant 9 is connected to the air inlet pipe of the cylindrical heating furnace 10; a bypass is arranged on the pipeline from the water seal tank 7 to the non-condensable gas separator tank 8, and a water washing tank 14 is installed on the bypass; a flap level gauge is arranged in the water washing tank 14; the end of the air inlet pipe of the water washing tank 14 in the tank body is 1m away from the bottom of the tank body; a glass tube level gauge is installed on the side wall of the water washing tank 14.

[0023] The top of the dehydration tower 1 is connected to the air inlet pipe of the second cooling tank 11 through a pipe, the air outlet pipe of the second cooling tank 11 is connected to the air inlet pipe on the side wall of the second vacuum tank 12 through a pipe, and the top of the second vacuum tank 12 is connected to the air inlet pipe of the water seal tank 7 through a pipe; a second vacuum pump 13 is installed on the pipeline from the second vacuum tank 12 to the air inlet pipe of the water seal tank 7; the bottom of the second vacuum tank 12 is connected to the feed pipe of the water seal tank 7 through a pipe.

[0024] During production, the exhaust gas from the top of the dehydration tank 1 is cooled in the second cooler and then enters the second vacuum tank 12. Under the action of the second vacuum pump 13, the non-condensable gas in the second vacuum tank 12 is discharged from the top into the water seal tank 7. After passing through the water seal tank 7, the non-condensable gas enters the water washing tank 14, where the colloid and coke particles therein are removed by water washing. The air inlet pipe in the water washing tank 14 is passed below the liquid level in the water washing tank to allow the non-condensable gas to be fully mixed with the water body. The flap level gauge in the water washing tank 14 can control the height of the liquid level in the water washing tank to avoid overflow of the full tank. Otherwise, after the gas is discharged from the top of the water washing tank, it enters the non-condensable gas separator 8 for gas-liquid separation, and the gas enters the cylindrical heating furnace 10 for combustion through the flame retardant 9; the non-condensable gas at the top of the primary distillation tower 2 and the pressure reducing tower 3 is also sent to the cylindrical heating furnace 10 for combustion through a similar process.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-condensable gas treatment system for a lubricating oil regeneration system, comprising a dehydration tower (1), a primary distillation tower (2), a pressure reducing tower (3) and a cylindrical heating furnace (10), characterized in that: The tops of the primary distillation tower (2) and the pressure reducing tower (3) are connected to the air inlet pipe of the first cooler (4) through pipelines, the air outlet pipe of the first cooler (4) is connected to the air inlet pipe of the side wall of the first vacuum tank (5) through pipelines, the air outlet pipe at the top of the first vacuum tank (5) is connected to the air inlet pipe of the water seal tank (7) through pipelines, the air outlet pipe of the water seal tank (7) is connected to the non-condensable gas separator tank (8) through pipelines, the non-condensable gas separator tank (8) is connected to the air inlet pipe of the flame retardant (9) through pipelines, and the air outlet pipe of the flame retardant (9) is connected to the air inlet pipe of the cylindrical heating furnace (10); a bypass is provided on the pipeline from the water seal tank (7) to the non-condensable gas separator tank (8), and a water washing tank (14) is installed on the bypass; a flap liquid level gauge is provided in the water washing tank (14); the end of the air inlet pipe of the water washing tank (14) inside the tank body is 1 m away from the bottom of the tank body.

2. The non-condensable gas treatment system for a lubricating oil regeneration system according to claim 1, characterized in that: The top of the dehydration tower (1) is connected to the air inlet pipe of the second cooling tank (11) via a pipe, the air outlet pipe of the second cooling tank (11) is connected to the air inlet pipe on the side wall of the second vacuum tank (12) via a pipe, and the top of the second vacuum tank (12) is connected to the air inlet pipe of the water seal tank (7) via a pipe.

3. The non-condensable gas treatment system for a lubricating oil regeneration system according to claim 2, characterized in that: A second vacuum pump (13) is installed on the pipeline of the air intake pipe from the second vacuum tank (12) to the water seal tank (7).

4. The non-condensable gas treatment system for a lubricating oil regeneration system according to claim 3, characterized in that: The bottom of the second vacuum tank (12) is connected to the feed pipe of the water seal tank (7) via a pipeline.

5. The non-condensable gas treatment system for a lubricating oil regeneration system according to claim 1, characterized in that: A first vacuum pump (6) is installed on the pipeline from the first vacuum tank (5) to the water seal tank (7).

6. The non-condensable gas treatment system for a lubricating oil regeneration system according to claim 5, characterized in that: The bottom of the first vacuum tank (5) is connected to the feed pipe of the water seal tank (7) via a pipeline.

7. The non-condensable gas treatment system for a lubricating oil regeneration system according to claim 1, characterized in that: A glass tube liquid level gauge is installed on the side wall of the water washing tank (14).

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