Waste oil regeneration system

Abstract

The utility model discloses a waste oil regeneration system which comprises a vacuum fractionating tower and a coarse filter, the oil inlet is formed in the position of the heater, and the oil pump motor set is arranged in front of the fine filter. The decolorizing tank is connected to the fine filter, and silica gel sand is loaded in the decolorizing tank; the fine filter is connected to the decolorizing tank, and an oil outlet is formed in the fine filter; waste oil enters through the oil inlet, is heated to about 65 DEG C by the heater and then enters the vacuum tube fractionating tower, due to the low air pressure state in the vacuum fractionating tower, the boiling point of water in the waste oil is reduced, and the waste oil is vaporized into water vapor which is recycled by the gas circuit assembly and discharged out of the body. Other waste oil deposits at the bottom of the vacuum fractionating tower and is pumped into a decolorizing tank for decolorization through an oil pump motor set, silica gel sand with a nano-molecular structure is adopted in the decolorizing tank to adsorb carbon-containing melanin in the waste oil, physical decolorization, dehydration and regeneration of the waste oil are achieved, the silica gel sand can be recycled, heated, washed and reused, and the environment is not affected; and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste oil regeneration, in particular to a waste oil regeneration system. Background Art

[0002] Waste oil refers to the oil that has been replaced after being used for a period of time due to the infiltration of contaminants. Waste oil mainly includes waste engine oil, waste hydraulic oil, waste cutting oil, waste cold rolling oil, waste insulating oil, etc., as well as waste mineral oil generated in the automotive industry, mechanical processing industry, equipment manufacturing and other industries. The total amount of harmful impurities in waste oil is usually in the range of 5% to 35%, and the remaining 95% to 65% are oil components. Appropriate process methods are adopted to purify and regenerate the waste oil. The quality of the treated waste oil meets or exceeds the new oil standard.

[0003] At present, waste oil is treated by chemical methods, generally adding chemical reagents to the waste oil, removing slag and dehydration through chemical reactions, and then decolorizing it through acid washing. However, dehydration and decolorization through chemical methods will destroy the original additives in the oil and produce a large amount of waste residue, which increases the difficulty of waste treatment and has a great impact on the environment, which is not environmentally friendly.

[0004] Therefore, the prior art still needs to be improved and enhanced. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a waste oil regeneration system, aiming to solve the problem that the method of removing slag, dehydrating and decolorizing by chemical methods in the prior art will produce a large amount of waste slag, increase the difficulty of waste treatment, and have a great impact on the environment, which is not environmentally friendly.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, a waste oil regeneration system comprises:

[0008] A vacuum distillation tower, wherein the front end of the vacuum distillation tower is connected to a coarse filter through a pipeline;

[0009] A heater is arranged at the front end of the coarse filter, and an oil inlet is arranged at the heater;

[0010] A gas path assembly connected to a vacuum distillation tower;

[0011] The fine filter is connected to the vacuum distillation tower through a pipeline, and an oil pump motor unit is provided at the front end of the fine filter;

[0012] The decolorizing tank is connected to the oil pump motor unit, and silica gel sand is loaded in the decolorizing tank;

[0013] The fine filter is connected to the decolorizing tank and is provided with an oil outlet.

[0014] Furthermore, the gas circuit assembly comprises:

[0015] a heat exchanger connected to the vacuum distillation tower;

[0016] A vacuum pump, which is arranged on one side of the heat exchanger;

[0017] The vapor-liquid separator is arranged at one end of the vacuum pump and is provided with an exhaust port, and a water tank is arranged at the vapor-liquid separator.

[0018] The technical solution adopted by the utility model has the following beneficial effects:

[0019] In this application, waste oil enters through the oil inlet, is heated to about 65° by the heater, and enters the vacuum distillation tower. Due to the low pressure in the vacuum distillation tower, the boiling point of water in the waste oil is reduced, and it is vaporized into water vapor and then pumped out of the body by the gas path component. The remaining waste oil is pumped out to the decolorization tank through the oil pump motor unit for decolorization. Silica gel sand is used in the decolorization tank to absorb the carbonaceous melanin in the waste oil to achieve physical decolorization and dehydration. After the silica gel sand is saturated with adsorption, it can be recycled and washed with heated water for repeated use, which has no impact on the environment, and the use of silica gel sand for decolorization reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of a waste oil regeneration system provided by the utility model;

[0021] 1. Vacuum distillation tower; 2. Heater; 3. Coarse filter; 4. Oil inlet; 5. Oil pump motor unit; 6. Fine filter; 7. Decolorization tank; 8. Fine filter; 9. Oil outlet; 10. Heat exchanger; 11. Vacuum pump; 12. Vapor-liquid separator; 13. Water tank; 14. Exhaust port. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0024] It should also be noted that the same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this example, see Figure 1 A waste oil regeneration system comprises a vacuum distillation tower 1, the front end of the vacuum distillation tower 1 is connected to a coarse filter 3 through a pipeline; a heater 2 is arranged at the front end of the coarse filter 3, and an oil inlet 4 is arranged at the heater 2; an air path component is connected to the vacuum distillation tower 1; a fine filter 6 is connected to the vacuum distillation tower 1 through a pipeline, and an oil pump motor unit 5 is arranged at the front end of the fine filter 6; a decolorization tank 7 is connected to the fine filter 6, and silica gel sand is loaded in the decolorization tank 7; a fine filter 8 is connected to the decolorization tank 7, and an oil outlet 9 is arranged on the fine filter 8.

[0027] Waste oil enters through the oil inlet 4, is heated to about 65° by the heater 2, and then is initially filtered. After the waste oil at 65° enters the vacuum tube fractionator, due to the low pressure in the vacuum fractionator 1, the boiling point of water in the waste oil is reduced, and it is vaporized into water vapor and then recovered and processed by the gas circuit component. The remaining waste oil is pumped out through the oil pump motor unit 5 to the decolorization tank 7 for decolorization. Silica gel sand is used in the decolorization tank 7. The carbon-containing melanin in the waste oil is adsorbed by the nano-scale micropores on the surface of the silica gel sand, realizing physical decolorization and dehydration treatment, completing the regeneration and purification of the waste oil. Compared with the traditional waste oil regeneration process, there is no waste discharge in the whole process, no impact on the environment, and the use of silica gel sand reduces the cost of use.

[0028] In the implementation of the present utility model, please refer to Figure 1The gas circuit assembly includes a heat exchanger 10 and a vapor-liquid separator 12. The heat exchanger 10 is connected to the vacuum distillation tower 1. The vacuum pump 11 is arranged on one side of the heat exchanger 10. The vapor-liquid separator 12 is arranged at one end of the vacuum pump 11 and is provided with an exhaust port 14. A water tank 13 is provided at the vapor-liquid separator 12.

[0029] The waste oil enters the vacuum distillation tower 1 through the heater 2 and the coarse filter 3 under the suction force of the vacuum pump 11. The water in the waste oil in the tower is vaporized into water vapor under the vacuum state of about 65 degrees and is pumped away by the vacuum pump. The water vapor is cooled by the heat exchanger 10 and reduced to crystal water by the vapor-liquid separator 12, which is discharged from the water tank 13. The oil-water separation is completed without generating impurities and waste materials, thereby improving the degree of environmental protection.

[0030] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the solutions disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the claims.

Claims

1. A waste oil regeneration system, characterized in that: It includes: A vacuum distillation tower, wherein the front end of the vacuum distillation tower is connected to a coarse filter through a pipeline; A heater is arranged at the front end of the coarse filter, and an oil inlet is arranged at the heater; A gas path assembly connected to a vacuum distillation tower; The fine filter is connected to the vacuum distillation tower through a pipeline, and an oil pump motor unit is provided at the front end of the fine filter; A decolorizing tank connected to a fine filter and loaded with silica gel sand; The fine filter is connected to the decolorizing tank and is provided with an oil outlet.

2. The waste oil regeneration system according to claim 1, characterized in that: The gas circuit assembly comprises: a heat exchanger connected to the vacuum distillation tower; A vacuum pump, which is arranged on one side of the heat exchanger; The vapor-liquid separator is arranged at one end of the vacuum pump and is provided with an exhaust port, and a water tank is arranged at the vapor-liquid separator.

Images