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Refining technology for producing lubricant base oil by using waste engine oil

A technology of lubricating oil base oil and waste engine oil, which is applied in the direction of multi-stage serial refining process, petroleum industry, and hydrocarbon oil treatment, which can solve the problems of difficult industrial adoption, high cost, and large loss, and achieve low operating cost Effect

Inactive Publication Date: 2017-07-21
MAOMING KAIYUE SPECIAL AGENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, there are three methods for refining: 1. Sulfuric acid method, which has been eliminated due to the restriction of the environmental protection law; The source is complicated, and the crude distillate contains different harmful substances, so it is difficult to choose a suitable catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] After molecular distillation of waste engine oil, the kinematic viscosity at 40°C is 28.9mm.s -1 200 g of black (color number 10), rather smelly, opaque crude distillate.

[0018] 1. Degumming: After dehydrating the crude distillate oil at 120°C, cool it down to 80°C, add 6 grams of TiCl4, stir for 30 minutes, put it into a separatory funnel, and let it stand for 2 hours to get the degummed oil;

[0019] 2. Refining of high-temperature activated clay: add 12 grams of activated clay to the degummed oil, heat to 160°C, stir for 45 minutes, naturally cool down to 135°C, and filter to obtain refined oil of activated clay;

[0020] 3. Clarification: Add 10 grams of macroporous silica gel to the refined oil of activated clay, stir at 80°C for 30 minutes, then let it stand at constant temperature for 2 hours, and then filter. It is light yellow (chroma 1.5), odorless, clear and transparent in appearance. Obtain 162 grams of product, yield 81%.

Embodiment 2

[0022] Waste engine oil obtained by scraper falling film distillation has a viscosity of 65.9mm.s at 40°C -1 , slightly transparent, smelly, dark brown (chroma No. 8) crude distillate oil 200 grams.

[0023] 1. Degumming: Degumming the crude distillate oil, heating to 120°C for dehydration, then cooling down to 80°C, adding 4 grams of TiCl4, stirring for 30 minutes, putting it into a separatory funnel, standing for 2 hours, and then discharging the slag to obtain the degummed oil;

[0024] 2. Refining of high-temperature activated clay: add 10 grams of activated clay to the degummed oil, heat to 160°C, stir for 45 minutes, naturally cool down to 135°C, and filter to obtain refined oil of activated clay.

[0025] 3. Clarification: Add 8 grams of macroporous silica gel to the refined oil of activated clay, stir at 80°C for 30 minutes, let stand at constant temperature for 2 hours, and then filter. Obtain light yellow (chroma 1.0), no odor, 165 grams of clear, transparent produc...

Embodiment 3

[0027] Waste engine oil obtained by scraper falling film distillation has a viscosity of 37.5mm.s at 40°C -1 200 grams of reddish-brown, translucent crude distillate oil.

[0028] 1. Degumming, heat the crude distillate oil at 120°C for dehydration, then cool down to 80°C, add 2 grams of TiCl4, stir for 30 minutes, put it into a separatory funnel, let it stand for 2 hours, and discharge the slag to obtain the degummed oil;

[0029] 2. Refining high-temperature activated clay, adding 10 grams of activated clay to the degummed oil, heating to 160°C, stirring for 45 minutes, cooling down to 135°C naturally, and filtering to obtain refined oil of activated clay.

[0030] 3. Clarification: Add 8 grams of macroporous silica gel to the refined oil of activated clay, stir at 80°C for 30 minutes, let stand at constant temperature for 2 hours, and then filter. Obtained light yellow (chroma 1.0), no odor, 167 grams of clear, transparent product, yield 83.5%.

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PUM

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Abstract

Provided is a refining technology for producing lubricant base oil by using waste engine oil. The refining technology is used for conducting reduced pressure distillation on the waste engine oil, refining and treating the obtained coarse fraction oil to make the chromaticity not greater than 1.5, the lubricant base oil is free of foreign smell, clear and transparent and meets the requirement, and the yield is up to 80% or above. The refining technology comprises the three steps of degumming, high-temperature activated clay refining and clarification.

Description

technical field [0001] The invention belongs to refining and clarification technology of petroleum products, more precisely, it relates to a refining process for producing lubricating oil base oil by utilizing crude distillate oil obtained by vacuum distillation of waste engine oil. Background technique [0002] At present, lubricating oil base oil is produced from waste engine oil. The crude distillate oil obtained by vacuum distillation (including molecular distillation, scraper falling film distillation, etc.) has a deep color, generally greater than No. 6, or even No. 10; it has an odor, A little cloudy and needs further refining. [0003] Generally, there are three methods for refining: 1. Sulfuric acid method, which has been eliminated due to the restriction of the environmental protection law; The source is complicated, and the crude distillate contains different harmful substances, so it is difficult to choose a suitable catalyst. [0004] In view of the complexity...

Claims

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Application Information

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IPC IPC(8): C10G53/02
CPCC10G53/02C10G2300/1062
Inventor 梁耕生麦启文杨江强
Owner MAOMING KAIYUE SPECIAL AGENT