CFD Modeling to Analyze Palm Shell Co-firing Percentage on Ketapang CFB Power Plant

Abstract

Biomass is one of the world’s greatest sustainable energy potentials. Utilization of biomass in the form of Co-firing coal fuel with biomass is one alternative to reduce the dependence of fossil fuels towards green power plant. This paper addresses Co-Firing modelling test results up to 50% biomass using palm kernel shell (palm kernel shell) in Ketapang Coal Fired Power Plant (CFPP) 2x10 MW. Ketapang CFPP has circulating fluidized bed (CFB) boiler. There are several advantages by using direct co-firing in CFB boiler: direct co-firing has the lowest investment cost, CFB has a wider range of biomass selection characteristics and characteristics than PC Boilers, CFB can process biomass materials with higher moisture content, etc. Result shown that the optimum percentage of palm kernel shell biomass use in the Ketapang Power Plant is 30% palm kernel shell. This is caused by the temperature value at 18 cm above the furnace bed and furnace exit gas temperature of 30% palm kernel shell which is not too much different from the temperature value at 18 cm above the bed furnace and furnace exit gas temperature of 0% palm kernel shell. This is also strengthened by the high value of the CO2 mass fraction in the 30% palm kernel shell mixture, which indicates that an ideal combustion.