Development of PP Melt Index Inferential Model
The melt index (MI) is an important quality specification in polypropylene (PP) production industries. Accurate online measurement of MI becomes vital in PP quality control. A new MI inferential model is proposed by using macro heat of reaction (MHR) as a key factor in MI correlation. MHR is calculated from a dynamic propylene polymerization model. The proposed MI model is validated by plant data and the prediction error is less than 5%. Simulations are performed by three different MI inferential models. The results show that the proposed model has least errors in various operation conditions. The MI model could be used as online soft sensor model or MI control
Modelling of the liquid phase polymerization of olefins in loop reactors
Abstract In this work a new model for the polymerization of olefins in a loop reactor is presented. The reactor is modelled as two tubular reactors interconnected. In contrast to the traditional equivalent CSTR approach, this model allows important effects such as recycle rate, axial dispersion and heat transfer to be investigated. Some simulation results are presented.
Business Crime: Its Nature and Control
Part 1 The nature of business crime: business crime and organizational deviance the nature of business crime. Part 2 Empirical studies of business crime: employee crime and industrial relations - disputed definitions insurance fraud - can the insurance industry control it? taxation - enforcement, equity and effectiveness liquidations and receiverships - the battle for control, by Sally Wheeler financial institutions - securities and investments the regulation of industry - safety versus profits. Part 3 Control.