MANUFACTURING PROCESS OF HIGH PURITY METHYLESTER

摘要

Disclosed herein is a process for producing methyl ester by transesterif icat ion of fat or oil with methanol in the presence of a strong base catalyst, the process composed of : removing methanol from the reaction mixture by evaporation to produce a methyl ester layer; cooling the methyl ester layer; and removing the residual catalyst by either filtration or centrifugal separation to recover methyl ester. The process is advantageous in that it can produce high purity & high yield methyl ester, useful for biodiesel application, without waste water byproduct, realizing an environmentally friendly and economical process.