ANALYSIS OF THE COMBUSTION OF COAL AND BIOMASS COMBINATIONS IN SURALAYA 1-4 POWER PLANT

• Main Author: Rahmi Maulida, Saufa
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/80831
• Institution: Institut Teknologi Bandung

Greenhouse gas (GHG) emissions are one of the causes of increasing temperatures on the Earth’s surface. In the energy sector, the largest contributor to GHG emissions is coal-fired power plants. One of the mitigations implemented by the government is to apply co-firing of biomass and coal in coal-fired power plants. Co-firing coal with biomass has the advantage of lower emissions came from fosil fuel and lower costs. However, the utilization of co-firing coal with biomass is still very small, namely 1-5%. In this research, a simulation of the combustion of a combination of coal and biomass was conducted for the case study of the Suralaya Power Plant Units 1-4 with a capacity of 400 MW. The modeling was carried out using Aspen Plus V12.1 software with two methods, co-milling and combined burners. The types of biomass that will be used are rice husk, sawdust, and SRF. Each biomass mass fraction will be varied with values of 10%, 20%, and 30%. The analysis results show that fosil fuel CO2 emissions decrease in both methods align with an increase in the percentage of the biomass. NOx emissions decreased with a maximum decrease in co-milling method up to 47.34%. SOx emissions decreased with a maximum decrease in co-milling method up to 73.98%. In both methods, there is a decrease in the power generated up to 34.6% in the co-milling method and 32.9% in the combined burners method. In terms of exhaust gas emissions, the co-milling method produces lower emissions compared to the combined burner method.