EFFECT OF THE PARAMETERS TO THE PREDICTIVE CONTROL OF A GAS FIRED FURNACE FOR CHEMICAL GASOLINE

KRESS, T.; VOLK, U.; GOLISCH, H.; HABER, R.

Abstract

The paper deals with the Generalized Predictive Control (GPC) of a gas fired furnace for chemical gasoline. The remaining sulphur and nitrogen are removed from light gasoline in a reactor at high temperature. The gasoline is fed to the reactor through a furnace. The control aim is to keep the feed temperature (at the furnace output which is also the reactor input) constant. Further on the oxygen surplus in the flue gas is minimized within its limits. Measurable disturbances are changes in the fuel gas density, in the furnace feed inlet temperature and in the hydrogen and gasoline flows. A multivariable predictive controller was designed, the controller parameters were tuned based on repeated simulation and the controller was implemented successfully. The paper shows the control cost function, the structure of the process model and the effect of some controller parameters to the control behaviour.

Coresponding author e-mail: robert[dot]haber[at]fh-koeln[dot]de

Session: Model Predictive Control