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Method of using waste grease to prepare epoxy plasticizer and product thereof

A technology of epoxy plasticizer and waste oil, applied in fatty acid esterification, organic chemistry and other directions, can solve the problems of cumbersome post-treatment process, high cost, large consumption of methanol, etc., to achieve increased energy consumption and high plasticization efficiency , good compatibility

Active Publication Date: 2019-07-05
浙江嘉澳环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above methods use transesterification of glycerides into fatty acid methyl esters, which consume a large amount of methanol, and the glycerin is discarded in vain, resulting in higher costs and more cumbersome post-treatment processes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 200 g of high acid value catering waste oil with an acid value of 20 mgKOH / g after freezing fractionation (the temperature of freezing fractionation is 20° C.) into the reaction flask, add 1.0 g of solid acid catalyst stannous oxide (Aladdin reagent), and stir , heated to 170°C, vacuumed, and the internal pressure of the system was kept at -0.1MPa, and 18g of isooctyl alcohol was gradually introduced in a dropwise manner, so that the fatty acid and isooctyl alcohol in the waste oil were esterified to generate fatty acid octanol Esters, glycerides in the system remain basically unchanged, react for 2 hours, the acid value drops to 0.45mgKOH / g, stop the reaction, continue vacuuming to remove the residual octanol, and filter the solid acid catalyst after cooling down to obtain 208.5g Esterification product, it is packed in the epoxy reaction bottle, is heated to 60 ℃, then drips the mixture of hydrogen peroxide 50g and formic acid 7.5g, carries out epoxy reaction, takes...

Embodiment 2

[0055] Add 200 g of high acid value catering waste oil and fat with an acid value of 65 mgKOH / g after freezing fractionation (the temperature of freezing fractionation is 20° C.) into the reaction flask, add 1.8 g of aqueous cerium sulfate solid acid catalyst (Aladdin reagent), and stir , heated to 130°C, vacuumed, and kept the internal pressure of the system at -0.1MPa, and gradually introduced 38g of butanol in a dropwise manner, so that the fatty acid and butanol present in the waste oil undergo esterification reaction to generate fatty acid butyl ester, React for 3 hours, the acid value drops to 0.35mgKOH / g, stop the reaction, continue vacuuming to remove the residual butanol, and filter the solid acid catalyst after cooling down to obtain 216.4g of esterified product, which is packed into an epoxy reaction bottle , heated to 60°C, and then dropwise added a mixture of 56g of hydrogen peroxide and 9g of formic acid to carry out an epoxy reaction, take a sample to test the io...

Embodiment 3

[0057] Add 200g of catering waste oil and fat with high acid value and low condensation (solidification temperature is 5-10°C) with an acid value of 15mgKOH / g into the reaction bottle, and add 1.2g of supported alumina solid acid catalyst, Qubu Huiquan Biotechnology Co., Ltd. , stirred, heated to 130°C, vacuumed, and kept the internal pressure of the system at -0.09MPa, and gradually introduced 15g of isobutanol in a dropwise manner, so that the fatty acid and isobutanol reacted to form isobutyl fatty acid ester, and reacted for 1 hour , the acid value drops to 0.4mgKOH / g, stop the reaction, continue vacuuming to remove the residual isobutanol, filter the solid acid catalyst after cooling down, obtain 203.19g esterification product, put it into an epoxy reaction bottle, heat to 60°C, then dropwise add a mixture of 42g of hydrogen peroxide and 6.5g of formic acid to carry out the epoxy reaction, take a sample to test the iodine value, the iodine value is 2.5%, stop the reaction,...

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PUM

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Abstract

The invention discloses a method of utilizing waste kitchen grease to prepare an epoxy plasticizer and a product thereof. The method comprises following steps: carrying out freezing fractionation on waste grease to remove saturated grease that is helpless to epoxidation; carrying out esterification reactions between waste grease and alcohols under the catalytic action of a solid acid to reduce theacid value; and finally adding formic acid and hydrogen peroxide to carry out epoxidation reactions. The prepared epoxy plasticizer has the advantages of good plasticization effect, high flash point,and little thermal weight loss, and the PVC product is resistant to oil precipitation. The preparation technology is simple and is suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method of a fine organic chemical product plasticizer, in particular to a preparation method and product of an epoxy plasticizer prepared from waste oil. Background technique [0002] China is a country with a large population and consumes a lot of oil, especially vegetable oils such as soybean oil, peanut oil, palm oil, and rapeseed oil. We are a major importer of soybean oil. But at the same time, more food and beverage waste oil will be produced. According to statistics, three to four million catering waste oil, hog oil, and gutter oil are produced in China every year. If they cannot be recycled, they may flow back to the dining table, posing a threat to people's health. [0003] Non-toxic and environmentally friendly plasticizers are mainly epoxy, including epoxy vegetable oil and epoxy fatty acid ester. Epoxy vegetable oil is based on vegetable oil such as soybean oil, rapeseed oil, corn oil, cottonseed oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/42C07D301/12C08L27/06C08L23/06C08K5/1515C11C3/04
CPCC07D301/12C07D303/42C08K5/1515C08L27/06C11C3/04C08L23/06
Inventor 沈健傅俊红
Owner 浙江嘉澳环保科技股份有限公司
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