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Method for producing environment-friendly type plasticiser using waste oil and oil foot

A production method and an environment-friendly technology, applied in the field of waste recycling, can solve the problems of long reaction time, many post-processing steps, complicated processes, etc., and achieve the effects of shortening the reaction time, reducing energy consumption, and simplifying the process

Active Publication Date: 2009-02-25
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

The above-mentioned process has the disadvantages of strong catalyst acidity, high corrosiveness to equipment, dark product color, long reaction time, many post-treatment links, complicated process, and the acid wastewater generated cannot be effectively treated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] After the waste oil and oil bottoms are pretreated to remove impurities and moisture, add 20% methanol and 4% concentrated sulfuric acid of the oil weight, and start heating after the system is sealed. The reaction temperature is controlled at 100°C and the pressure is 0.6MPa. After 8 hours of reaction , the esterification rate was 95%, the reaction was finished, the temperature was controlled at 90°C, the unreacted methanol was distilled off, and the fatty acid methyl ester was obtained after standing still for water separation and alkali washing. Add hydrogen peroxide (35%) with a mass ratio of 40% of fatty acid methyl ester into an epoxidation reactor, heat to 50°C, then add dropwise formic acid (90%) with a mass ratio of 15%, and stir and react at a temperature of 60°C for 6 hours , after the reaction finishes, carry out washing-free separation, obtain the product epoxy fatty acid methyl ester plasticizer, through testing epoxy value 5.0%

Embodiment 2

[0026] After the waste oil and oil bottoms are pretreated to remove impurities and moisture, add 25% industrial methanol and 3% concentrated sulfuric acid of oil weight, and start heating after the system is sealed. The reaction temperature is controlled at 95°C, the pressure is 0.5MPa, and the reaction is 7 hours Finally, the esterification rate was 97%, the reaction was finished, the temperature was controlled at 98°C, the unreacted methanol was evaporated, and the fatty acid methyl ester was obtained after standing still for water separation and alkali washing. Add hydrogen peroxide (35%) with fatty acid methyl ester mass ratio 20% in the epoxidation reactor, heat to 50°C, then add 10% formic acid (85%) dropwise, stir and react at a temperature of 62°C for 8 hours, and react After the end, carry out washing-free separation to obtain the product epoxy fatty acid methyl ester plasticizer, and the epoxy value is 4.8% after testing

Embodiment 3

[0028] After the waste oil and oil bottoms are pretreated to remove impurities and moisture, add 10% methanol and 4% concentrated sulfuric acid of the oil weight, and start heating after the system is sealed. The reaction temperature is controlled at 70°C and the pressure is 0.9MPa. After 20 hours of reaction , the esterification rate is 98%, the reaction is finished, the temperature is controlled at 120°C, the unreacted methanol is steamed, and the alkali washes the water after standing to separate the water to obtain the fatty acid methyl ester, and the fatty acid methyl ester mass ratio is 25% hydrogen peroxide (50 %) into the epoxidation reactor, heated to 60°C, then added dropwise 20% formic acid (90%), stirred and reacted at a temperature of 70°C for 8 hours, after the reaction was completed, separated without washing to obtain the product epoxy Fatty acid methyl ester plasticizer, the tested epoxy value is 5.2%.

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Abstract

The invention discloses a method for recycling waste, and more particularly relates to a method for producing an environmental-protection plasticizer by waste oil and bottom oil. The method comprises the steps as follows: waste oil reacts with methanol, and the reacted ester reacts with hydrogen peroxide and further reacts with the methanol to finally obtain the product, namely an epoxy fatty acid methyl ester plasticizer. The method has the advantages of carrying out ester exchange by one step without decolorization, adding no stabilizer in the epoxidization process, reducing the reaction time and energy consumption by using a high-efficiency mixed reactor, simplifying the process, and being more environment-friendly. The method can be widely applied to various occasions where waste oil is generated.

Description

technical field [0001] The invention relates to a method for recycling waste, in particular to a method for producing an environment-friendly plasticizer by utilizing waste oil and oil residues. technical background [0002] Phthalate plasticizers are currently the most widely used type of plasticizers, such as DOP and so on. However, because such plasticizers contain aromatic compounds, which seriously threaten people's health and living environment, countries have successively issued laws to restrict the use of such products. Countries such as the United States are reducing their production year by year, causing the market price of this product to soar. PVC manufacturers strongly appeal for the emergence of substitutes for this type of product. Epoxy plasticizers are compounds with epoxy groups in the molecular structure. It not only has a plasticizing effect on PVC, but also stabilizes the active chlorine atoms on the polyvinyl chloride chain. The epoxy groups in the str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/1515C08L27/06
Inventor 沈健章金富
Owner 浙江嘉澳环保科技股份有限公司
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