Thesis (M.Eng.)--Chulalongkorn University, 2009

This study is using plantwide control strategies for designing the control structures of an alkali-catalyzed process to produce biodiesel from palm oil that are designed to achieve the control objective. Dynamic behavior of an alkali-catalyzed process produces biodiesel from palm oil is a complex plant consisting of many unit operations. Plantwide control strategies using Luyben's heuristics method and Fixture point of Wongsri were adapted for developed control loops in the biodiesel production plant. In this work presents alkali-catalyzed process to pro- duce biodiesel simulation via using software Aspen HYSYS version 3.1 and design control structure to achieve purity of biodiesel product greater than 99.65%wt. and glycerol by-product greater than 92%wt. (ASTM speci_cation). The control structure for biodiesel production plant showed purity of biodiesel and glycerol by-product greater than ASTM