Úprava řídícího systému výroby LCO2

Abstract

In the initial chapter of my diploma thesis I conducted an analysis of the control system of the liquid CO2 plant in Linde Gas Inc., based in Litvínov. I pointed out the deficiencies and mistakes caused by the daily use of the control system. Furthermore, in the three following chapters dealing with regulators, sequences, new analog inputs and visualization diagrams, I proposed and made some changes which should lead to the deficiencies correction - taken from the analysis of the control systém - and to the efficiency enhancement of the plant operation. I assessed the effects of the changes and new elements of the control system on the operation quality. Then I summarized the diploma thesis points.