Method for preparing environmentally-friendly chlorinated plasticizer from waste grease, and product produced therethrough

A waste oil and plasticizer technology, applied in the direction of recycling fat oil/fatty acid from waste, fatty acid production, fat generation, etc., can solve the problem of affecting the compatibility of plasticizers and polyvinyl chloride, and the plasticization of polyvinyl chloride has no effect , Saturated components cannot be eliminated by epoxy, etc., to reduce the harm to human health, easy to control the process flow, and high utilization rate

Active Publication Date: 2019-07-05
FUJIAN MINGZHOU ENVIRONMENTAL PROTECTION DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Non-toxic and environmentally friendly plasticizers are mainly epoxy, including epoxy vegetable oil and epoxy fatty acid ester, etc., but the saturated components in vegetable oil cannot be epoxy-treated, and have no effect on the plasticization of PVC. On the contrary, they will Affect the compatibility of plasticizer and PVC, greatly increase the oil yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Heat 200g of waste slop oil after removing water impurities, heat to 50℃, dissolve all the solid fat partly, cool slowly, and carry out freezing fractionation. The freezing temperature is 20℃, and the high freezing point fat is cooled and filtered by pressing. The test acid value of the high freezing point grease is 11mgKOH / g, add 0.5g sodium bisulfate acid catalyst, chemical reagents, heat up to 100℃, slowly drip 15g methanol, sample test acid value 1.2mgKOH / g, let stand to acid The catalyst was removed, and 1.8g of sodium hydroxide and 36g of methanol were added, stirred and reacted at 65°C for 3 hours. The glycerol was removed by standing still to obtain crude methyl ester, which was distilled to 110°C under vacuum (-0.09Mpa~-0.1Mpa) to remove methanol. Continue to heat up to distill the fatty acid methyl esters, collect the fractions to obtain high-freezing point fatty acid methyl esters (the freezing point range is 30°C, and the iodine value is 5%), add 0.2g of azois...

Embodiment 2

[0052] Heat 200g of waste waste oil after removal of water impurities to 50°C, dissolve all solid fats and oils partly, slowly cool, and carry out freezing and fractionation. The freezing temperature is 20°C, and the high freezing point grease is cooled and filtered by pressing. The test acid value of the high freezing point grease is 45mgKOH / g, add 1.0g of ferrous sulfate as an acid catalyst, chemical reagent grade, heat up to 100℃, slowly add 40g of methanol dropwise, sample test acid value of 0.98mgKOH / g, let stand Remove the acid catalyst, add 1.6g of sodium hydroxide and 45g of methanol, stir, react at 70°C for 3.5 hours, let stand to remove the glycerol to obtain crude methyl ester, vacuum distillation (-0.09Mpa~-0.1Mpa) to 110°C to remove methanol , Continue to raise the temperature to steam the fatty acid methyl esters, collect the fractions to obtain the high freezing point fatty acid methyl esters (the freezing point range is 25°C, the iodine value is 15%), add 0.25g a...

Embodiment 3

[0054] 200g of waste waste oil after removal of water impurities, test acid value of 102mgKOH / g, add 1.5g of acid catalyst self-made activated carbon-supported p-toluenesulfonic acid, heat up to 100℃, slowly drip 55g methanol, sample test acid value 1.31mgKOH / g, stand still to remove the acid catalyst, then add 2.0g of sodium hydroxide and 50g of methanol, stir, react at 70℃ for 3.5 hours, stand still to remove glycerol, get crude methyl ester, vacuum (-0.09Mpa~-0.1 Mpa) Distill to 110°C to remove methanol, continue to raise the temperature to rectify the fatty acid methyl esters with a Kjeldahl distillation head, and collect the front fraction (temperature 220°C~240°C) to obtain high freezing point fatty acid methyl esters (the freezing point range is 20°C, 20%), add 0.15g of azoisobutyronitrile, heat to 100°C, pass in chlorine gas to carry out the chlorination reaction, after 3 hours of reaction, the sampling density is 1.12g / cm 3 , Stop chlorination, fill with nitrogen, remov...

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Abstract

The invention discloses a method for preparing an environmentally-friendly chlorinated plasticizer from waste grease. The method comprises the following steps: the waste grease, used as a raw material, and methanol undergo esterification and ester exchange to obtain a high-condensation point fatty acid methyl ester mainly containing saturated fatty acid methyl ester; and the high-condensation point saturated fatty acid methyl ester is post-treated under the action of a catalyst in the presence of introduced chlorine to obtain chloro fatty acid methyl ester. The environmentally-friendly chlorofatty acid methyl ester plasticizer prepared by the method of the invention has a good plasticizing effect, and makes PVC products have the advantages of difficult oil effusion, low condensation point, low price and good quality. The method has the advantages of simple preparation process, and suitableness for industrial production.

Description

Technical field [0001] The invention relates to a preparation method of a plasticizer for fine organic chemical products, in particular to a preparation method and product for preparing an environmentally friendly chlorinated plasticizer from waste grease. Background technique [0002] We are a country with a large population and consume a lot of fats, and consume a lot of fats every year, especially vegetable oils such as soybean oil, peanut oil, palm oil, rapeseed oil, etc., and are the main soybean oil importers. But at the same time, more catering waste grease will be generated. According to statistics, three to four million catering waste oil, slop oil, and waste oil are produced in China every year. If they cannot be recycled, they may return to the dining table and threaten people's health. [0003] Non-toxic and environmentally friendly plasticizers are mainly epoxy, including epoxy vegetable oils and epoxy fatty acid esters. However, the saturated components in vegetable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/00C11B13/00C08K5/101C08L27/06
CPCC11C3/003C11C3/00C11B13/00C08K5/101C08L27/06Y02W30/74
Inventor 傅俊红
Owner FUJIAN MINGZHOU ENVIRONMENTAL PROTECTION DEV
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