Process method for producing base oil by regenerating waste lubricating oil

A technology for regenerating base oil and waste lubricating oil, which is applied in the direction of lubricating composition, multi-stage series refining process, etc., which can solve the problem of flexible adjustment of production process of waste lubricating oil, inability to deal with highly oxidative deterioration, and emulsification of waste lubricating oil and other issues to achieve the effects of maximizing economic benefits, shortening residence time, good environmental benefits and social benefits

Active Publication Date: 2012-03-14
BEIJING JINYU MANGROVE ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two process methods take advantage of the high vacuum and low temperature operation advantages of molecular stills, avoid the oxidation of oil products, and are somewhat adaptable to the wide range of raw material sources, but neither of them can flexibly adjust the production process according to the composition characteristics of waste lubricating oil. Waste lubricating oil with high oxidation deterioration, serious emulsification and high acid value cannot be disposed of

Method used

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  • Process method for producing base oil by regenerating waste lubricating oil
  • Process method for producing base oil by regenerating waste lubricating oil
  • Process method for producing base oil by regenerating waste lubricating oil

Examples

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example 1

[0039] A process for regenerating base oil from waste lubricating oil of the present invention is achieved through the process steps of waste lubricating oil pretreatment, thin film evaporation, molecular distillation, clay refining and flash degassing:

[0040] 1) Pretreatment

[0041] Pump 15 tons of waste lubricating oil from the collection tank area into the settling tank of the pretreatment unit, acid value 0.2mgKOH / g waste lubricating oil, add 5% caustic soda 80kg to neutralize to 0.05mg KOH / g waste lubricating oil, stir for 30min , heat up at the same time, keep the waste lubricating oil at 70°C and let it settle for 10 hours to remove moisture and large particle size impurities, and then filter to further remove particle impurities above 5 μm, and then pump it into the raw material tank for Thin film evaporation provides raw materials;

[0042] 2) Thin film evaporation

[0043] The waste lubricating oil in the raw material tank is preheated to 140°C by the heat excha...

example 2

[0051] A process for regenerating base oil from waste lubricating oil of the present invention is achieved through the process steps of waste lubricating oil pretreatment, thin film evaporation, molecular distillation, clay refining and flash degassing:

[0052] 1) Pretreatment

[0053] Pump 15 tons of waste lubricating oil from the collection tank area into the settling tank of the pretreatment unit, acid value 0.2mgKOH / g waste lubricating oil, add 5% caustic soda 80kg to neutralize to 0.05mg KOH / g waste lubricating oil, stir for 40min , heat up at the same time, keep the waste lubricating oil at 75°C and let it settle for 12 hours to remove moisture and large particle size impurities, and then filter to further remove particle impurities above 5 μm, and then pump it into the raw material tank for Thin film evaporation provides raw materials;

[0054] 2) Thin film evaporation

[0055] The waste lubricating oil in the raw material tank is preheated to 150°C by the heat excha...

example 3

[0063] A process for regenerating base oil from waste lubricating oil of the present invention is achieved through the process steps of waste lubricating oil pretreatment, thin film evaporation, molecular distillation, clay refining and flash degassing:

[0064] 1) Pretreatment

[0065] Pump 15 tons of waste lubricating oil from the collection tank area into the settling tank of the pretreatment unit, acid value 0.2mgKOH / g waste lubricating oil, add 5% caustic soda 80kg to neutralize to 0.05mg KOH / g waste lubricating oil, stir for 40min , heat up at the same time, keep the waste lubricating oil at 80°C and let it settle for 8 hours to remove water and large particle size impurities, and then filter to further remove particle impurities above 5 μm, and then pump it into the raw material tank for Thin film evaporation provides raw materials;

[0066] 2) Thin film evaporation

[0067] The waste lubricating oil in the raw material tank is preheated to 150°C by the heat exchanger...

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Abstract

The invention discloses a process method for producing base oil by regenerating waste lubricating oil, realized by the steps of pretreatment of waste lubricating oil, thin film evaporation, molecular distillation, clay refining and degasification with flash evaporation. The use of the process can regenerate any waste lubricating oil collected from markets. According to different quality of the waste lubricating oil, the base oil yield is 50-90 %. The process can be flexibly adjusted, particularly, the process can be used for producing base oil with single specification of low and medium viscosity in parallel to maximize the production and processing capacity of devices, and can be used for producing base oil with three specifications of low, medium and high viscosity in series to separatethe base oil fraction from the waste lubricating oil completely according to different quality and values, so that the maximum economic benefit is achieved.

Description

technical field [0001] The invention relates to the technical field of waste lubricating oil processing, in particular to a process method for regenerating base oil from waste lubricating oil. Background technique [0002] Waste lubricating oil is the lubricating oil replaced during the use of equipment and machinery. Due to the effects of high temperature oxidation, thermal decomposition, shear wear, etc., light fractions, condensation products, colloids, asphaltenes, carbon particles are produced in the lubricating oil, and impurities such as fuel oil and metal abrasive particles are mixed. According to statistics, more than 4 million tons of waste lubricating oil are produced in my country every year. The extensive utilization of these waste lubricating oils not only causes a huge waste of resources, but also causes great harm to the environment. [0003] There are currently dozens of disposal processes for the recycling of waste lubricating oil. In the early sulfuric a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00C10G53/08
Inventor 潘利祥任立明吴斌张继勇
Owner BEIJING JINYU MANGROVE ENVIRONMENTAL PROTECTION TECH
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