Device for regenerating deep drawing base oil from waste lubricating oil

Abstract

The invention relates to the technical field of waste oil recovery treatment, in particular to a waste lubricating oil regeneration deep drawing base oil device which comprises an adsorption treatment box and a distillation retort, a waste oil pipe and a solvent oil pipe are connected to the adsorption treatment box, and activated carbon powder used for adsorbing waste lubricating oil impurities is arranged in the adsorption treatment box; an oil discharge outlet is formed in the bottom of the adsorption treatment box and connected with the distillation retort through an oil conveying pipe, and a filtering layer for filtering activated carbon powder is arranged at the position, corresponding to the oil discharge outlet, of the bottom of the adsorption treatment box; the distillation retort is connected with a nitrogen tank through a gas delivery pipe; the nitrogen tank is used for introducing nitrogen in the distillation process of the waste lubricating oil to remove solvent oil. According to the method, activated carbon adsorption and distillation extraction are combined, the recovery rate of the waste lubricating oil is increased, meanwhile, secondary waste and pollution of resources are reduced or avoided, and the problems that in the prior art, the comprehensive recycling efficiency of the waste lubricating oil is low and is generally only 60%-70%, and secondary waste and pollution of the resources still exist are solved.

Description

Technical Field

[0001] The invention relates to the technical field of waste oil recovery and treatment, in particular to a device for regenerating deep drawing base oil from waste lubricating oil. Background Art

[0002] Waste lubricating oil regeneration is a process of treating used lubricating oil by physical and chemical methods to remove impurities and deterioration and restore its lubricating properties. This technology not only helps protect the environment and reduce the pollution of soil and water sources by waste oil, but also saves oil resources, and has important economic and environmental values. Waste lubricating oil regeneration products can be used as base oil for new lubricating oil and are widely used in industrial production and civil fields. With the improvement of environmental awareness and the advancement of technology, the waste lubricating oil regeneration market has developed rapidly.

[0003] At present, the waste lubricating oil regeneration technology widely used in China is still based on separation technologies such as kettle distillation, molecular short-path distillation, and thin film evaporation technology. Although these technologies have certain industrial effects, the comprehensive reuse efficiency of waste lubricating oil in the existing technology is low, usually only 60% to 70%, and there is still secondary waste and pollution of resources. To this end, we propose a waste lubricating oil regeneration deep drawing base oil device. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a waste lubricating oil regeneration deep drawing base oil device, which has the characteristics of combining activated carbon adsorption with distillation extraction to improve the recovery rate of waste lubricating oil, while reducing or avoiding secondary waste and pollution of resources. It solves the problem that the comprehensive reuse efficiency of waste lubricating oil in the prior art is low, usually only 60% to 70%, and there is still secondary waste and pollution of resources.

[0005] The present invention provides the following technical solution: a waste lubricating oil regeneration deep drawing base oil device, comprising an adsorption treatment box and a distillation tank, the adsorption treatment box is connected to a waste oil pipe and a solvent oil pipe, and the adsorption treatment box is provided with activated carbon powder for adsorbing impurities in the waste lubricating oil;

[0006] The bottom of the adsorption treatment box is provided with an oil discharge port, which is connected to the distillation tank through an oil pipeline, and a filter layer for filtering activated carbon powder is provided at a position corresponding to the oil discharge port at the bottom of the adsorption treatment box;

[0007] The distillation tank is connected to a nitrogen tank through a gas pipeline, and the nitrogen tank is used to introduce nitrogen to remove solvent oil during the distillation process of waste lubricating oil.

[0008] Preferably, a stirring motor is provided on the top of the adsorption treatment box, the output shaft of the stirring motor is connected to the stirring frame inside the adsorption treatment box, and the stirring motor is used to drive the stirring frame to mix the waste lubricating oil, solvent oil and activated carbon powder.

[0009] Preferably, it also includes a gas heating furnace, which is connected to the gas pipeline and is used to increase the temperature of nitrogen and heat the waste lubricating oil with the high-temperature nitrogen.

[0010] Preferably, an air pump is provided on the gas delivery pipe, and the air pump is used to pump the gas in the nitrogen tank into the distillation tank.

[0011] Preferably, a flow valve 1 is provided on the waste oil pipe, and the flow valve 1 is used to control the oil inlet amount of the waste lubricating oil.

[0012] Preferably, a second flow valve is provided on the solvent oil pipe, and the second flow valve is used to control the oil inflow of the solvent oil.

[0013] Preferably, the adsorption treatment box is provided with a controller, and the controller is used to control the operation of the stirring motor, flow valve 1 and flow valve 2.

[0014] Preferably, it also includes a desorption mechanism, which includes an air intake pipe, a heating jacket, an exhaust pipe and an organic waste gas catalytic combustion device;

[0015] The air intake pipe is connected to the adsorption treatment box, and a heating jacket is arranged on the air intake pipe. The adsorption treatment box is connected to the organic waste gas catalytic combustion equipment through the exhaust pipe.

[0016] Preferably, a sealing cover is provided on the side of the adsorption treatment box, and the sealing cover is used to add activated carbon powder into the adsorption treatment box. A booster pump is installed on the adsorption treatment box.

[0017] Preferably, the bottom of the adsorption treatment box is connected with supporting feet, and the controller is provided with a display screen and control buttons.

[0018] The present invention provides a device for regenerating deep-drawn base oil from waste lubricating oil. By setting an adsorption treatment box, the activated carbon powder in the adsorption treatment box is used to adsorb colored impurities in the waste lubricating oil, and the activated carbon powder is diluted with solvent oil to reduce its viscosity, which is convenient for the adsorption of the activated carbon. After adsorption, the waste lubricating oil is distilled and recovered, and the recovery rate can reach more than 90%. The activated carbon after adsorption can be desorbed and recovered to avoid waste and secondary pollution of the activated carbon. The activated carbon after desorption and recovery can continue to adsorb the waste lubricating oil. The problem of low comprehensive reuse efficiency of waste lubricating oil in the prior art, usually only 60% to 70%, and the problem of secondary waste and pollution of resources is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the adsorption treatment box of the present invention.

[0021] In the figure: 1. adsorption treatment box; 2. waste oil pipe; 3. solvent oil pipe; 4. activated carbon powder; 5. stirring motor; 6. stirring frame; 7. filter layer; 8. oil drain port; 9. oil pipeline; 10. distillation tank; 11. nitrogen tank; 12. gas heating furnace; 13. air pump; 14. gas pipeline; 15. controller; 16. flow valve one; 17. flow valve two; 18. air inlet pipe; 19. heating jacket; 20. exhaust pipe; 21. catalytic combustion equipment for organic waste gas; 22. support foot; 23. display screen; 24. control button; 25. sealing cover; 26. booster pump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides a technical solution:

[0024] Embodiment 1:

[0025] like Figure 1 and 2 As shown, a device for regenerating deep-drawn base oil from waste lubricating oil comprises an adsorption treatment box 1 and a distillation tank 10. The adsorption treatment box 1 is connected with a waste oil pipe 2 and a solvent oil pipe 3. Activated carbon powder 4 capable of adsorbing impurities in the waste lubricating oil is arranged in the adsorption treatment box 1. The waste lubricating oil enters the adsorption treatment box 1 through the waste oil pipe 2, and the solvent oil enters the adsorption treatment box 1 through the solvent oil pipe 3 to dilute the waste lubricating oil, and the dilution ratio is 1:1. The amount of activated carbon powder 4 added to the adsorption treatment box 1 can be adjusted as needed, specifically about 1% of the mass fraction of the diluted waste lubricating oil.

[0026] An oil drain port 8 is provided at the bottom of the adsorption treatment box 1, and the oil drain port 8 is connected to the distillation tank 10 through an oil pipe 9. A filter layer 7 for filtering activated carbon powder 4 is provided at the position of the bottom of the adsorption treatment box 1 corresponding to the oil drain port 8; the filter layer 7 provided at the oil drain port 8 adopts a precision filter mesh or filter element or other filtering equipment, which is used to filter out the activated carbon powder 4 in the waste lubricating oil, and the waste lubricating oil after adsorption enters the distillation tank 10.

[0027] The distillation tank 10 is connected to the nitrogen tank 11 through the gas pipe 14, and the nitrogen tank 11 is used to introduce nitrogen to remove the solvent oil during the distillation of the waste lubricating oil. After the regenerated waste lubricating oil is filtered, the solvent oil contained in the regenerated oil accounts for about 1 / 2 of the total oil volume, and the solvent oil must be removed to obtain pure lubricating oil. At the same time, most of the solvent oil can be effectively removed by traditional vacuum distillation and heating evaporation, but it is difficult to remove the remaining small amount of solvent oil, and the remaining solvent oil will affect the quality of the regenerated waste lubricating oil, especially the viscosity. Therefore, when evaporating and removing the solvent oil, nitrogen is introduced to perform solvent oil gas stripping removal, which can effectively improve the solvent oil removal effect.

[0028] Embodiment 2:

[0029] On the basis of the first embodiment, a stirring motor 5 is provided on the top of the adsorption treatment box 1, and the output shaft of the stirring motor 5 is connected to the stirring frame 6 inside the adsorption treatment box 1. The stirring motor 5 can drive the stirring frame 6 to mix the waste lubricating oil, solvent oil and activated carbon powder 4. The mixing of the waste lubricating oil and the solvent oil facilitates the dilution of the waste lubricating oil by the solvent oil and makes the mixture uniform. The waste lubricating oil and the activated carbon powder 4 are mixed to make them uniform, increase the contact area, and facilitate adsorption.

[0030] Embodiment three:

[0031] On the basis of the second embodiment, it also includes a gas heating furnace 12, which is connected to the gas pipeline 14. The gas heating furnace 12 is used to increase the temperature of the nitrogen and heat the waste lubricating oil with the high-temperature nitrogen. By setting up the gas heating furnace 12, the nitrogen can be heated, and after heating, it is directly introduced into the distillation tank 10 to mix with the waste lubricating oil, which improves the heating efficiency and avoids the coking phenomenon caused by heating to a certain extent. The gas pipeline 14 is provided with an air pump 13, and the air pump 13 can pump the gas in the nitrogen tank 11 into the distillation tank 10. Nitrogen can be used for solvent oil gas stripping and removal, thereby improving the solvent oil removal effect.

[0032] Embodiment 4:

[0033] On the basis of the third embodiment, the waste oil pipe 2 is provided with a flow valve 16, which can control the oil intake of the waste lubricating oil, thereby ensuring the ratio of the waste lubricating oil to the activated carbon. The solvent oil pipe 3 is provided with a flow valve 2 17, which can control the oil intake of the solvent oil, thereby ensuring the ratio of the solvent oil to dilute the waste lubricating oil.

[0034] The adsorption treatment box 1 is provided with a controller 15, which can control the operation of the stirring motor 5, the flow valve 1 16 and the flow valve 2 17. Thus, the amount of waste lubricating oil entering the adsorption treatment box 1, the amount of solvent oil entering the adsorption box, and the mixing between the two and the activated carbon powder 4 are adjusted.

[0035] A sealing cover 25 is provided on the side of the adsorption treatment box 1. By providing the sealing cover 25, it is convenient to add activated carbon powder 4 into the adsorption treatment box 1. A booster pump 26 is installed on the adsorption treatment box 1. The booster pump 26 can increase the pressure in the adsorption treatment box 1 to a certain extent, and then squeeze the desorbed waste lubricating oil into the oil pipeline 9 and the distillation tank 10, thereby improving the discharge efficiency of the waste lubricating oil after adsorption.

[0036] The bottom of the adsorption treatment box 1 is connected with a support leg 22, and the stability of the stirring and adsorption process of the adsorption treatment box 1 can be ensured by setting the support leg 22. The controller 15 is provided with a display screen 23 and a control button 24. Through the control button 24 and the display screen 23, various parameters such as the oil intake of waste lubricating oil and the oil intake of solvent oil can be set. The adsorption treatment box 1 and the distillation tank 10 are also provided with a temperature sensor for cooperating with the controller 15 to adjust the air intake temperature during desorption and the temperature of the nitrogen entering the distillation tank 10.

[0037] Embodiment five:

[0038] On the basis of Example 4, a desorption mechanism is also included, which includes an intake pipe 18, a heating jacket 19, an exhaust pipe 20 and an organic waste gas catalytic combustion device 21; the intake pipe 18 is connected to the adsorption treatment box 1, and a heating jacket 19 is arranged on the intake pipe 18, and the adsorption treatment box 1 is connected to the organic waste gas catalytic combustion device 21 through the exhaust pipe 20.

[0039] After the activated carbon is saturated with adsorption, it can be desorbed by introducing high-temperature air. Therefore, the desorption mechanism uses the air inlet pipe 18 and the heating jacket 19 to heat the gas entering the adsorption treatment box 1, and uses the high-temperature gas to desorb the saturated activated carbon powder 4. The waste gas after desorption is not directly discharged or burned, but is introduced into the organic waste gas combustion equipment for treatment.

[0040] Exhaust gas catalytic combustion equipment is an environmentally friendly equipment used to treat industrial organic waste gas. It uses a catalyst to oxidize and decompose organic matter in the waste gas into harmless carbon dioxide and water at a lower temperature, while releasing heat. This equipment usually includes a heat exchanger, a catalytic combustion chamber, a control system and other parts, which can effectively improve energy utilization efficiency and reduce environmental pollution. The working principle of catalytic combustion equipment is to use a catalyst to reduce the activation energy of organic waste gas combustion, thereby achieving flameless combustion at a lower temperature.

[0041] During the desorption process, the adsorption treatment box 1 is first emptied, and only the valves on the air inlet pipe 18 and the exhaust pipe 20 are opened, and the valves on the oil delivery pipe 9, the waste oil pipe 2 and the solvent oil pipe 3 are all closed. The stirring motor 5 drives the stirring frame 6 to stir the activated carbon powder 4 in the desorption process, so that the contact area between the activated carbon powder 4 and the hot air is larger and more uniform, thereby improving the desorption efficiency.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for regenerating deep drawing base oil from waste lubricating oil, characterized in that: It comprises an adsorption treatment box (1) and a distillation tank (10), wherein the adsorption treatment box (1) is connected to a waste oil pipe (2) and a solvent oil pipe (3), and activated carbon powder (4) for adsorbing impurities in waste lubricating oil is arranged in the adsorption treatment box (1); The bottom of the adsorption treatment box (1) is provided with an oil discharge port (8), the oil discharge port (8) is connected to the distillation tank (10) via an oil delivery pipe (9), and a filter layer (7) for filtering activated carbon powder (4) is provided at a position corresponding to the oil discharge port (8) at the bottom of the adsorption treatment box (1); The distillation tank (10) is connected to a nitrogen tank (11) via a gas pipe (14), and the nitrogen tank (11) is used to introduce nitrogen to remove solvent oil during the distillation process of waste lubricating oil.

2. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 1, characterized in that: A stirring motor (5) is arranged on the top of the adsorption treatment box (1), and the output shaft of the stirring motor (5) is connected to a stirring frame (6) inside the adsorption treatment box (1). The stirring motor (5) is used to drive the stirring frame (6) to mix the waste lubricating oil, solvent oil and activated carbon powder (4).

3. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 1, characterized in that: It also comprises a gas heating furnace (12), wherein the gas heating furnace (12) is connected to the gas transmission pipe (14), and the gas heating furnace (12) is used to increase the temperature of nitrogen and heat the waste lubricating oil by means of the high-temperature nitrogen.

4. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 3, characterized in that: An air pump (13) is provided on the air delivery pipe (14), and the air pump (13) is used to pump the gas in the nitrogen tank (11) into the distillation tank (10).

5. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 1, characterized in that: The waste oil pipe (2) is provided with a flow valve (16), and the flow valve (16) is used to control the oil inflow of the waste lubricating oil.

6. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 5, characterized in that: The solvent oil pipe (3) is provided with a second flow valve (17), and the second flow valve (17) is used to control the inflow amount of the solvent oil.

7. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 6, characterized in that: The adsorption treatment box (1) is provided with a controller (15), and the controller (15) is used to control the operation of the stirring motor (5), the flow valve 1 (16) and the flow valve 2 (17).

8. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 1, characterized in that: It also includes a desorption mechanism, which includes an air intake pipe (18), a heating jacket (19), an exhaust pipe (20) and an organic waste gas catalytic combustion device (21); The air intake pipe (18) is connected to the adsorption treatment box (1), and a heating jacket (19) is provided on the air intake pipe (18). The adsorption treatment box (1) is connected to the organic waste gas catalytic combustion equipment (21) via an exhaust pipe (20).

9. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 1, characterized in that: A sealing cover (25) is provided on the side of the adsorption treatment box (1), and the sealing cover (25) is used to add activated carbon powder (4) into the adsorption treatment box (1). A booster pump (26) is installed on the adsorption treatment box (1).

10. The device for regenerating deep drawing base oil from waste lubricating oil according to claim 1, characterized in that: The bottom of the adsorption treatment box (1) is connected to a support foot (22), and the controller (15) is provided with a display screen (23) and a control button (24).

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