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A method for preparing sulfurized fatty acid by using kitchen waste oil and a method for lubricating oil

A technology for sulfurized fatty acid and waste oil, which is applied in the directions of fatty acid production, fat oil/fat refining, fatty acid preparation/refining, etc., to achieve the effects of reducing manufacturing cost, convenient material acquisition, and simple steps

Active Publication Date: 2022-06-03
正大国际科技(常德)集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few studies on the separation and purification of fatty acids from kitchen waste oil using ionic liquids as catalytic systems

Method used

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  • A method for preparing sulfurized fatty acid by using kitchen waste oil and a method for lubricating oil
  • A method for preparing sulfurized fatty acid by using kitchen waste oil and a method for lubricating oil

Examples

Experimental program
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Effect test

Embodiment 1

[0095] Step 1: Preparation of Aerogel Nanoparticles A: Mix 10 g of cellulose nanofibers (mass fraction of 1.56%) with deionized water, and ultrasonically treat for 8 minutes to obtain a nanoparticle dispersion. Triethoxysilane (KH-550) was added to KH-550 in a ratio of 1:1 by mass to obtain a mixed solution. The mixed solution was stirred at a rotating speed of 650 r / min for 2 hours at room temperature, frozen in liquid nitrogen for 40 minutes, and vacuum frozen After drying for 28 hours, it was put into an oven and dried at 100° C. for 30 minutes to obtain KH-550 modified cellulose aerogel nanoparticles.

[0096] Step 2: Preparation of Aerogel Nanoparticles B: Mix 2 grams of cellulose nanofibers with deionized water, ultrasonically treat for 10 minutes to obtain a dispersion, add ethylenediaminetetraacetic acid (EDTA) aqueous solution, and stir at room temperature for 36 h , filtered with suction, washed several times with ultrapure water, and dried at 90° C. for 30 minutes t...

Embodiment 2

[0099] Except that the mass parts of KH-550-modified cellulose nanoparticles as aerogel nanoparticles A in step 3 of Example 1 were replaced by 2 parts and EDTA-modified cellulose as aerogel nanoparticles B Except that the mass part of the aerogel nanoparticles was changed to 1.5 parts, the rest of the component contents and operating conditions were the same as those in Example 1.

Embodiment 3

[0101] Except that the parts by mass of KH-550-modified cellulose nanoparticles as aerogel nanoparticles A in step 3 of Example 1 were replaced with 10 parts by mass and EDTA-modified cellulose as aerogel nanoparticles B Except that the mass part of the aerogel nanoparticles was changed to 5 parts, the rest of the component contents and operating conditions were the same as those in Example 1.

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Abstract

The invention discloses a method for preparing sulfurized fatty acid by using kitchen waste oil, which comprises the steps of purifying kitchen waste oil, catalytic hydrolysis, separation, distillation and sulfuration, wherein a compound ionic liquid catalyst is used in the catalytic hydrolysis step, and The mass fraction ratio of the catalyst to the kitchen waste oil is 1:(30-50), and sulfur powder is used in the vulcanization step to vulcanize the fatty acid. In addition, the present invention also provides a method for preparing an airgel-loaded lubricating oil, wherein the antioxidant in the lubricating oil is the sulfurized fatty acid obtained by the aforementioned method.

Description

technical field [0001] The invention belongs to the technical field of fatty acid preparation, and in particular relates to a method for preparing sulfurized fatty acid by using kitchen waste oil and the use of the prepared sulfurized fatty acid in preparing lubricating oil. Background technique [0002] Kitchen waste oil is a general term for all kinds of low-quality oils that exist in life, generally including greasy floating objects in the sewers, waste oil discharged from hotels and catering companies, and leftover oil after repeatedly frying food. There are tens of millions of tons of kitchen waste oil in kitchen waste every year, and its direct discharge not only causes direct waste of resources, but also has a huge impact on people's living environment. Therefore, how to fully tap and utilize the abundant kitchen waste oil resources and turn waste into treasure is an urgent problem that needs to be solved. [0003] At present, people have carried out research on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00C11B3/10C11C1/04C11C1/10C10M135/06C10M169/04C10M159/02C10N30/06C10N30/10C10N30/12
CPCY02W30/74
Inventor 何新桥
Owner 正大国际科技(常德)集团有限公司
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