Framework of dynamic simulation for complex chemical processes

The current state of the art of a modelling and dynamic simulation system for complex chemical and biochemical processes is discussed. Process modelling activity involves modelling a physical plant and external tasks imposed on the plant, and details of both aspects are discussed. Typical software structure is concerned with a model builder, result analyser, translator, solution methods, model library and external software interface. Some of them are explained in moderate depth. Recent progress of functionality and numerical methods is presented. Numerical methods incorporating symbolic and structural techniques improve accuracy and efficiency. In order to illustrate benefits of employing dynamic simulation tools, one typical chemical process consisting of a mixing tank, tubular reactor and gas absorber is chosen and dynamic simulation is carried out. Taking into account the work in this paper, some suggestions for future development of a unified framework of a modelling package are made.