Thesis (M.Eng.)--Chulalongkorn University, 2011

In general, the production process in all plants do not have single process or have only single unit operation separated from other process but they have several operation units. And due to the restriction of the environment, safety and operating condition, it is very necessary to have the control system to control the condition and compensate for any deviation occurred. The methyl amines process is a complex chemical process with reaction and separation sections connected by several recycle streams. There are three consecutive reversible reactions that produce three different chemical components. In this thesis, the plantwide control strategy is considered for the methyl amines process. Fixture point theorem is applied to the plantwide control structures design for selecting appropriated set of controlled variables. A commercial process simulation software achieves the dynamics simulation of this research, both of steady-state and dynamics conditions.