FEASIBILITY ANALYSIS OF BIOMASS CO-FIRING IN INDONESIA COAL-FIRED POWER PLANT

• Main Author: Ariesta Aprilla, Cacha
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69499
• Institution: Institut Teknologi Bandung

The main issues of global climate change leads to the reduction of CO2 emissions as the most dominant emission of Greenhouse Gas (GHG) emissions. As a follow-up to the Paris Agreement, Indonesia's commitment has been written in the Nationally Determined Contribution (NDC) where Indonesia set a target of reducing GHG emission levels by 29% below the baseline emission level in 2030 with mitigation efforts with self-financing and a reduction of 41 % with international assistance. One of the mitigation measures taken by the power generation sub-sector is the application of biomass co-firing. This study is aimed at assessing the feasibility of implementing biomass cofiring in coal-fired power plants in terms of technology, economy, and environment. The Power Plant reviewed in this study is Coal-Fired Power Plant (2 x 110 MW), at Riau Province. The technology used is Circulating Fluidized Bed (CFB). Technological feasibility includes analysis of technological performance on the application of biomass co-firing to the currently operated technology. The biomass fuel that will be reviewed in this study is palm kernel shell with the ratio of biomass and coal varies 0-20% (energy units). Environmental aspects covered in this study are CO2 emission and air pollutants (SOx, NOx, and PM10). The economical aspects that will be reviewed in this study are the cost and the benefit. The cost aspects consist of fuel cost, modification cost, carbon tax. The benefit aspects consist of GHG emission reduction potential, fuel cost saving, carbon tax. The method that will be used in the calculation of the carbon emission and air pollutants refer to Guideline for Implementation and Reporting of Greenhouse Gas Inventory in The Energy Sector, Sub-sector Electricity, and EEA Guidebook 2019. This study shows that the Implementation of biomass co-firing with biomass ratio of 10-20% is feasible from the technical aspect with derating less than 2%, environmental aspect with PM10 less than 100 mg/Nm3 and NOx less than 550 mg/Nm3, economic aspects with Net Present Value achieves 4.4-22.4 million USD and Internal Rate of Return 19-66%. Implementation of biomass co-firing by direct co-firing shall be conducted with 10% biomass ratio, that lead to the GHG reduction of 130,000 tons CO2e/year. The Palm shells that shall be provided is 207 tons/day and the generated profit is 1.20 million USD/year.