Method for regenerating waste lubricating oil by combining solvent extraction with composite metal oxide adsorbent

A technology of adsorbent regeneration and composite metal, which is applied in the direction of lubricating compositions, etc., to achieve the effects of high yield, high oil yield and high efficiency

Inactive Publication Date: 2018-11-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method of the invention can not only eliminate the problems of corroding equipment and polluting the environment caused by the traditional sulfuric acid process, but also has simple process, convenient and flexible operation, low energy consumption, high efficiency, and can reach the quality standard of regenerated oil

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  • Method for regenerating waste lubricating oil by combining solvent extraction with composite metal oxide adsorbent

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Embodiment 1

[0025] In this embodiment, a method for regenerating waste lubricating oil by solvent extraction combined with a composite metal oxide adsorbent comprises the following steps:

[0026] a. Weigh 60mmol of anhydrous CaCl respectively 2 , 5mmol of FeCl 3 ·6H 2 O and 25mmol of AlCl 3 ·6H 2 O, dissolved in 50 mL without CO 2 Prepare a mixed salt solution in water, and at the same time weigh 160mmol of NaOH and dissolve it in 100mL deionized water to prepare a mixed alkali solution. Under normal temperature conditions, under the action of magnetic stirring, slowly add the mixed salt solution to the NaOH solution. After stirring for 2 hours, Carry out static aging, after aging for 4 hours, take out suction filtration, wash with water 2 to 3 times, dry at 105°C to obtain ternary metal hydroxide, and then calcinate the ternary metal hydroxide at 750°C for 3 hours , and then grind and crush the calcined product to obtain a composite metal oxide decolorizer, which is used as a compo...

Embodiment 2

[0033] This embodiment is basically the same as Embodiment 1, especially in that:

[0034] In this embodiment, a method for regenerating waste lubricating oil by solvent extraction combined with a composite metal oxide adsorbent comprises the following steps:

[0035] a. Weigh 60mmol of anhydrous CaCl respectively 2 , 5mmol of FeCl 3 ·6H 2 O and 25mmol of AlCl 3 ·6H 2 O, dissolved in 50 mL without CO 2 Mixed salt solution was prepared in water. At the same time, 160 mmol of NaOH was dissolved in 100 mL of deionized water to prepare a mixed alkali solution. Under normal temperature conditions, under the action of magnetic stirring, the mixed salt solution was slowly added to the NaOH solution. After stirring for 5 hours, Carry out static aging, after aging for 4 hours, take out suction filtration, wash with water 2 to 3 times, dry at 105°C to obtain ternary metal hydroxide, and then calcinate the ternary metal hydroxide at 750°C for 3 hours , and then grind and crush the ...

Embodiment 3

[0042] This embodiment is basically the same as the previous embodiment, and the special features are:

[0043] In this embodiment, a method for regenerating waste lubricating oil by solvent extraction combined with a composite metal oxide adsorbent comprises the following steps:

[0044] a. Weigh 60mmol of anhydrous CaCl respectively 2 , 5mmol of FeCl 3 ·6H 2 O and 25mmol of AlCl 3 ·6H 2 O, dissolved in 50 mL without CO 2 Mixed salt solution was prepared in water. At the same time, 160 mmol of NaOH was dissolved in 100 mL of deionized water to prepare a mixed alkali solution. Under normal temperature conditions, under the action of magnetic stirring, the mixed salt solution was slowly added to the NaOH solution. After stirring for 4 hours, Carry out static aging, after aging for 4 hours, take out suction filtration, wash with water 2 to 3 times, dry at 105°C to obtain ternary metal hydroxide, and then calcinate the ternary metal hydroxide at 750°C for 3 hours , and then...

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Abstract

The invention discloses a method for regenerating waste lubricating oil by combining solvent extraction with a composite metal oxide adsorbent. The method comprises the steps: loading waste lubricating oil to be regenerated into a container, placing in a constant temperature drying box, depositing for at least 12 h, and removing primary upper clear oil; then adding an organic solvent to the primary upper clear oil, carrying out extraction and refining treatment, cooling the obtained oil-containing mixture to room temperature, then depositing the oil-containing mixture for at least 2 h, then removing secondary upper clear oil, next taking the secondary upper clear oil, mixing with the composite metal oxide adsorbent to form a reactant system, controlling the temperature of the reactant system to 60-90 DEG C, and decolorizing the secondary upper clear oil for 20-40 min; and finally, separating to remove a compound metal oxide decolorizer, and thus obtaining regenerated base oil. Qualityindexes of the waste oil treated by the method meet the requirement standards of the base oil, an acid-free and alkali-free process is adopted throughout the process, the yield of the regenerated oilis high, the repeated utilization rate of the adsorbent is high, and the requirements of green sustainable development are met.

Description

technical field [0001] The present invention relates to a method for recycling and reusing waste lubricating oil, in particular to a method for recycling and reusing waste lubricating oil by solvent extraction, and also relates to a method for recycling waste lubricating oil by using a composite metal oxide adsorbent The method of recycling and utilization is applied to the technical field of waste resource treatment. Background technique [0002] The National Bureau of Technical Supervision of China has formulated the "Technical Guidelines for the Recovery and Recycling of Waste Lubricating Oil" (GB / T17145--1997), which stipulates the definition of waste lubricating oil: "When lubricating oil is used in various machinery and equipment, due to Affected by air oxidation, thermal decomposition and impurity pollution, its physical and chemical properties reach their respective oil change indicators, and the replaced oil is collectively called waste lubricating oil. Waste lubrica...

Claims

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Application Information

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IPC IPC(8): C10M175/00
CPCC10M175/0008C10M175/005C10M175/0083
Inventor 陆永生胡超张在屋钱光人
Owner SHANGHAI UNIV
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