Method for preparing fatty acid ester by micro-channel reactor
A technology of microchannel reactor and fatty acid ester, which is applied in chemical instruments and methods, preparation of carboxylate, preparation of organic compounds, etc. It can solve the problems of high raw material requirements, low conversion rate and yield, long reaction time, etc. problems, to achieve the effect of wide adaptability of raw materials, high yield and short reaction residence time
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example 1
[0014] 5 g of cottonseed oil and 7.38 g of methanol reaction mixture 1 containing 0.15 g of concentrated sulfuric acid were injected into a quartz microchannel reactor 3 with an inner diameter of 0.53 mm through a high-pressure pump 2, and the reaction temperature was controlled at 115° C. and the residence time was 15 min. The reaction product 6 was collected and analyzed by gas chromatography to obtain a yield of 50.5% of cottonseed oil methyl ester.
example 2
[0016] After mixing 5g of cottonseed oil and 7.387g of methanol containing 0.30g of concentrated sulfuric acid, inject it into a stainless steel microchannel reactor with an inner diameter of 0.6mm at normal pressure and temperature controlled at 170°C through a high-pressure pump, and adjust the reactants in the microchannel. The residence time in the reactor was 30 min. The yield of cottonseed oil methyl ester obtained by the reaction is 87.4%.
example 3
[0018] After mixing 5 g of cottonseed oil and 9.233 g of methanol containing 0.15 g of concentrated sulfuric acid, the mixture was injected into a quartz microchannel reactor with an inner diameter of 0.2 mm through a high-pressure pump, and the reaction temperature was controlled at 115 °C and the residence time was 19.5 min. The yield of cottonseed oil methyl ester obtained by the reaction is 97.1%.
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