Method for synthetizing biological diesel oil by oil and fat materials

A technology for synthesizing biodiesel and biodiesel, which is applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, and the petroleum industry. It can solve the problems of complex processing, affecting mass transfer, and poor solubility, and achieve high catalytic activity and reaction conditions. Mild, simple and easy-to-control reaction process

Active Publication Date: 2004-02-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are some unavoidable disadvantages in the preparation of biodiesel by chemical method: ① The free fatty acid and water in the oil raw material seriously affect the progress of the reaction; ② The solubility of methanol in oil is not good, which easily leads to the formation of emulsion and complicates the subsequent treatment process ; ③ The process requires that the amount of methanol used greatly exceeds the reaction molar ratio, and the evaporation and reflux of excess methanol increases the energy consumption of the process
These acyl receptors seriously affect the enzyme reaction

Method used

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  • Method for synthetizing biological diesel oil by oil and fat materials
  • Method for synthetizing biological diesel oil by oil and fat materials

Examples

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Example

[0018] Example 1: Put 9.6 g of methyl acetate and 9.65 g of soybean oil into a triangular flask with a stopper and mix them evenly. After heating to 40°C in a reciprocating shaker with automatic temperature control, add 30% oil based on the mass of oil The immobilized lipase Novozym 435 started to react, and after 5-7 hours, 9.2g of biodiesel was produced.

Example

[0019] Example 2: Put 10g of ethyl acetate and 9.65g of soybean oil into a triangular flask with a stopper and mix them evenly. After heating to 40℃ in a reciprocating shaker with automatic temperature control, add 30% fixed oil based on the mass of oil. The lipase Novozym 435 started to react, and after 10 to 14 hours, 8.2 g of biodiesel was produced.

Example

[0020] Example 3: Put 9.6g of methyl acetate and 9.65g of rapeseed oil into a corkscrew with a stopper and mix them evenly. After heating to 40°C in a reciprocating shaker with automatic temperature control, add 30% based on the oil mass The immobilized lipase Novozym 435 started to react, and after 5-7 hours, 9.2g of biodiesel was produced.

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Abstract

A process for synthesizing biologic diesel oil from raw oil material features that the short-chain ester of fatty acid (methyl acetate or ethyl acetate) is used as acyl receptor and the biologic enzyme is used to catalyze the transesterifying reaction of oil, and includes such steps as transesterifying reaction between said ester of fatty acid and oil to obtain biologic diesel oil and glyceride triacetate, and reaction between said glyceride triacetate and methanol to obtain short-chain ester for fatty acid for cyclic use.

Description

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Claims

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Application Information

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Owner TSINGHUA UNIV
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