Cogeneration Plant : Optimization of Heat Recovery Steam Generator (HRSG)

Abstract

This research discusses the optimization of cogeneration plant at PT. Dian Swastatika Sentosa while the CFBs are eliminated in the steam production process, thus the steam is only produced by HRSG A, and HRSG B. The research has been conducted experimentally by adjusting the steam mass flow rate of 51% for HRSG A and 49% for HRSG B according to the scenario 2 and condition which have been determined in the pre experiment calculation. During the experiment, the total mass flow rate supplied for paper mill is 10.776 kg/s, which consists of 5.482 kg/s from HRSG A and 5.294 kg/s from HRSG B. The optimization results in the nett power of 3344.63 kW for PLTG A and 3328.33 kW for PLTG B, the required heat of combustion chamber are 13990.76 kW for PLTG A and 13466.462 kW for PLTG B, and the waste heat from the gas turbine are 10646.086 kW from PLTG A and 10138.132 kW from PLTG B.