THE FLUCTUATING STEAM REQUIREMENTS AND FEASIBLE APPLICATION OF GAS TURBINES WITH A WASTE HEAT BOILER

Abstract

We introduce a Hungarian petroleum refinery with an industrial heat requirement fluctuating between 460 MW and 150 MW and evaluate the feasibility of a 300 t/h steam producing gas turbine with heat utilizing boilers while guaranteeing the provision of necessary operational safety reserves. The most suitable solution is accomplished with a continuous loading operation of the gas turbine block, due to the small requirement of steam there is an occurrence of periodic excess, which is utilized in the 215 MW steam turbine to acquire an operational safety reserve. During the period of maximum steam requirement, an inadequate steam quantity is acquired from these steam turbines, this can be secured by extraction before reheating. From the result of this analysis, it is not practicable to fulfil the fluctuating steam requirement of the gas turbine under partial loading.