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A method for recycling waste lubricating oil

A technology of waste lubricating oil and lubricating oil, which is applied in the direction of hydrocarbon oil treatment products, hydrocarbon oil treatment, lubricating composition, etc., can solve the problems of low utilization rate of waste lubricating oil raw materials, poor product properties, etc., and achieve the value of large-scale industrial promotion, The effect of good product properties and moderate conditions

Inactive Publication Date: 2018-08-07
台州天天环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a method for regeneration treatment of waste lubricating oil, which solves the problems of low raw material utilization rate of existing waste lubricating oil, poor product properties, etc.

Method used

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  • A method for recycling waste lubricating oil
  • A method for recycling waste lubricating oil
  • A method for recycling waste lubricating oil

Examples

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Effect test

Embodiment 1

[0039] A method for recycling waste lubricating oil, comprising the following steps:

[0040] (1) Solvent treatment: Stir and mix the waste lubricating oil and tetrahydrofuran methanol with a volume ratio of 1:1.5, stir for 1 hour, let stand for 8 hours to separate layers, centrifuge the upper lubricating oil, and remove the solvent by vacuum distillation of the oil sample. 90℃, pressure -0.1MPa;

[0041] (2) Membrane separation: The waste lubricating oil after solvent treatment first enters the first-stage membrane module, and the material pressure entering the first-stage membrane module is 2.0MPa, and the temperature is 65°C; then enters the second-stage membrane module, enters The pressure of the second-stage membrane module is 1.2MPa, and the temperature is 98°C; then it enters the next step of hydrogenation upgrading unit; the membrane element of the first-stage membrane module is a ceramic microfiltration membrane, and the membrane element of the second-stage membrane m...

Embodiment 2

[0048] A method for recycling waste lubricating oil, comprising the following steps:

[0049] (1) Solvent treatment: Stir and mix the waste lubricating oil and tetrahydrofuran methanol with a volume ratio of 1:1, stir for 0.5h, let stand for 8h to separate layers, centrifuge the upper layer of lubricating oil, and distill the oil sample under reduced pressure to remove the solvent, then distill under reduced pressure Temperature 90℃, pressure -0.1MPa;

[0050] (2) Membrane separation: The waste lubricating oil after solvent treatment first enters the first-stage membrane module, and the material pressure entering the first-stage membrane module is 1.5MPa, and the temperature is 70°C; then enters the second-stage membrane module, enters The pressure of the second-stage membrane module is 1MPa, and the temperature is 100°C; then it enters the next step of hydrogenation reforming unit; the membrane element of the first-stage membrane module is a ceramic microfiltration membrane, ...

Embodiment 3

[0057] A method for recycling waste lubricating oil, comprising the following steps:

[0058] (1) Solvent treatment: Stir and mix the waste lubricating oil and tetrahydrofuran methanol with a volume ratio of 1:2, stir for 1.5 hours, let stand for 8 hours to separate layers, centrifuge the upper layer of lubricating oil, and distill the oil sample under reduced pressure to remove the solvent, then distill under reduced pressure Temperature 90℃, pressure -0.1MPa;

[0059] (2) Membrane separation: The waste lubricating oil after solvent treatment first enters the first-stage membrane module, and the material pressure entering the first-stage membrane module is 2.5MPa, and the temperature is 60°C; then enters the second-stage membrane module, enters The pressure of the second-stage membrane module is 1.5MPa, and the temperature is 95°C; then it enters the next step of hydrogenation upgrading unit; the membrane element of the first-stage membrane module is a ceramic microfiltration...

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Abstract

The invention discloses a method for carrying out regeneration treatment on useless lubricating oil, and belongs to the technical field of an oil product quality improving technological process in a petroleum processing technology. The method comprises a solvent treatment step, a membrane separation step, a hydrogenation modification step, an adsorption, supplementation and purification step and a normal-pressure fractionation step. According to the method disclosed by the invention, most of metal and polar additives can be removed by adopting a solvent treatment method and a membrane separation method, aromatic hydrocarbon, heteroatoms, undissolved matters and most of residual carbon and residual metal can be removed through the hydrogenation modification step of a stationary bed, and residual polar additives can be further removed through the adsorption, supplementation and purification step, so that the light stability and the thermal stability of a product are increased, high-quality lubricating oil base oil can be produced, and byproducts of high-quality naphtha and high-quality diesel can be produced.

Description

technical field [0001] The invention relates to the technical field of oil upgrading process in petroleum processing technology, in particular to a method for regeneration treatment of waste lubricating oil. Background technique [0002] With the development of my country's machinery industry, the demand for lubricating oil continues to increase, and lubricating oil is used under high temperature and high pressure conditions, and its composition, structure and performance have undergone significant changes. At the same time, it is affected by corrosion and mechanical wear and the amount of lubricating oil additives. Continuously increasing, after the use of lubricating oil, a kind of dark waste lubricating oil with high aromatic content, high residual carbon value, many insolubles, large metal content and many polar residues is formed. The annual output of this kind of waste lubricating oil in my country reaches 15 million more than tons. This kind of waste lubricating oil is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M175/00C10M175/06C10G67/14
CPCC10G67/14C10G2300/1007C10G2400/04C10G2400/10C10M175/0008C10M175/0033C10M175/0041C10M175/005C10M175/0083C10M175/06
Inventor 邓文安李传吴波候影飞李庶峰李鹏谢海华文萍
Owner 台州天天环保科技有限公司
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