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Method for regenerating waste lubricating oil

A technology of waste lubricating oil and lubricating oil, applied in the direction of lubricating composition, etc., can solve the problems of large equipment investment, long recovery period, low product yield, etc., and achieve the effect of ensuring diversity and improving product output rate

Inactive Publication Date: 2012-01-04
JIANGSU DIAOHUANG PETROCHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology has the following disadvantages: 1) Large equipment investment and long payback period
2) The product yield is low. Due to the existence of multiple distillation processes, part of the lubricating oil is cracked into light oil such as non-standard diesel oil, which affects the product yield. The highest can only reach about 75%.

Method used

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Experimental program
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Effect test

Embodiment Construction

[0024] The waste lubricating oil regeneration method comprises the following steps in turn:

[0025] 1. Raw material oil enters the factory: before the raw material oil enters the factory, the water content and oil content of the raw material must be tested. In principle, those with a moisture content greater than 5% are not allowed to enter the factory. After the raw oil enters the factory, it is transferred from the oil tank truck to the raw material storage tank.

[0026] 2. Sedimentation to remove water and impurities: The raw material oil is stored in the raw material storage tank after entering the factory, and the raw material storage tank also serves as a settling tank. Generally, after the raw material oil has settled for more than 72 hours, it can be released from the oil outlet and then proceed to the next process (it is best to heat at a low temperature of 50-60 ° C, and the settling time can be relatively reduced).

[0027] 3. Heating and dehydration: Put the se...

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Abstract

The invention discloses a method for regenerating waste lubricating oil, which comprises the following steps in turn: 1) delivering raw material oil into a plant; 2) removing water and impurities by settling; 3) dewatering by heating; 4) removing impurities by centrifugation; 5) removing a dispersant by heating; 6) refining by acid; 7) neutralizing by alkali; 8) absorbing with carclazyte and filtering; 9) blending lubricating oil; and 10) warehousing finished oil. The regenerated lubricating oil produced by the invention has the advantages that: through removal of water and impurities and dispersant, refining by acid, neutralization by alkali and absorption and filtration by carclazyte, the diversity of the raw material oil is ensured without influencing the quality of product and the product yield is improved; and the product yield generally reaches about 90 percent, which is 10 percent higher than that of common regeneration technology. Particularly, the removal of the dispersant from the raw material oil guarantees the quality of the base oil of the regenerated lubricating oil is ensured, and the performance of the blended lubricating oil reaches or exceeds related standards inChina.

Description

technical field [0001] The invention belongs to the technical field of waste lubricating oil regeneration and relates to a method for producing regenerated lubricating oil by using waste lubricating oil as a raw material. Background technique [0002] Due to external pollution during use, lubricating oil will produce a large amount of colloids and oxides, which will reduce or even lose its due effect and be discarded. Although it is famous for its huge output, its economic value is extremely low, which leads to its It has always been in the status of "waste", and in order to dispose of it every year, it is dumped or incinerated regardless of the consequences. [0003] Waste lubricating oil actually does not contain many degenerate components, and is concentrated in the fraction of polar compounds. If these metamorphic components can be removed during regeneration, it is not difficult to produce high-quality base oil, and the same additive formula as natural oil can be used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00C10M177/00C10M169/04
Inventor 徐新华
Owner JIANGSU DIAOHUANG PETROCHEM TECH
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