Method for regenerating and extracting waste mineral oil by filling nitrogen extracting

A technology of waste mineral oil and extraction method, which is applied in the direction of lubricating composition, only multi-stage serial refining process, etc., and can solve the problems of serious secondary pollution and low quality of regenerated oil products

Inactive Publication Date: 2013-06-12
佛山市和挚承环保科技有限公司
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Problems solved by technology

Although this method is simple in process and convenient in equipment operation, the quality of regenerated oil is low and secondary pollution is serious

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  • Method for regenerating and extracting waste mineral oil by filling nitrogen extracting

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Embodiment Construction

[0013] The waste mineral oil regeneration method of the present invention: firstly, input the pretreated waste mineral oil into the distillation reaction kettle to reach 50-60% of the volume of the kettle, close the oil inlet valve, and open the vacuum system after adding the distillation auxiliary agent, and the system takes about 30 minutes The pressure drops to -0.1-0.02MPa, and at the same time start the circulation heating system to heat the waste oil to 60-70 0 At C, the mixed water components in the waste oil start to distill and vacuum dehydrate; then nitrogen is filled into different parts of the distilled waste mineral oil: Nitrogen is filled into the waste oil to make the oil stir and tumbling, and the additives are continuously mixed Mixing and reaction, decolorization and deodorization of regenerated oil; Nitrogen filling in the upper space of waste oil liquid can remove space miscellaneous gas, prevent light oil components from oxidizing and igniting, and prevent ...

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Abstract

The invention discloses a method for regenerating and extracting waste mineral oil by filling nitrogen. The method comprises the following steps of: (1) delivering waste mineral oil into a distillation reactor, distilling at reduced pressure after reducing the pressure to -0.1MPa to -0.02Mpa, and dehydrating in vacuum; (2) filling nitrogen into different parts of the distillation reactor, removing other residual miscellaneous gases in the space of the distillation reactor, stirring the dehydrated waste mineral oil, and forming a negative-pressure zone at the inlet of a rectification tower; and (3) circularly heating the stirred waste mineral oil to 120-320 DEG C according to different thermophases, separating out oil steam with different components, mixing the oil steam with nitrogen molecules, transporting quickly, and extracting. The method effectively solves the problems of low regeneration yield of the waste mineral oil, low extraction efficiency and environment pollution.

Description

technical field [0001] The invention relates to the field of waste mineral oil regeneration technology, in particular to a nitrogen-filled extraction method for waste mineral oil regeneration. Background technique [0002] Mineral oil refers to lubricating oil extracted from petroleum. Mineral lubricating oil becomes waste lubricating oil after use and failure. Among them, only 3-10% of it really deteriorates and cannot be regenerated. Most of it can be removed through corresponding processes. The invalid additives, deteriorated dirt and impurities in the waste lubricating oil can produce a base oil that meets the quality requirements, and after further refining treatment, a finished lubricating oil with good quality can be obtained. [0003] In order to improve the yield and extraction efficiency of base oil and reduce environmental pollution, professional scientific and technological workers are studying various new techniques to solve the technical problems of base oil yi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02C10M175/02
Inventor 刘展鸿郑志坚范维忠梅罩伟
Owner 佛山市和挚承环保科技有限公司
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