Patent ID: 8377328
Filing Date: 2013-02-19
Classification: C07C,C09K

Abstract:
1. A method for producing an agent consisting of a substantially pure glycerol-containing by-product stream, optionally comprising water, for addition to liquids to enable said liquids to function at temperatures below the freezing point of water, and by-product streams comprising salt(s) and miscellaneous organics other than glycerol (MONG), said method comprising: a) reacting a triglyceride ester with an alcohol in the presence of a base catalyst to produce a glycerol phase comprising glycerol, catalyst, MONG and optionally water and/or unreacted alcohol and a monoester phase that can be processed further in order to be employed as biodiesel; b) separating said glycerol phase from said monoester phase; c) removing substantially all of the alcohol from the glycerol phase; d) neutralizing the glycerol phase with an acid to produce salts from the base catalyst and to separate the MONG, e) removing said salt(s), MONG, and optionally water from said glycerol phase to produce said agent.