Coal Blending Effect in Coal Fired Power Plant Performance
Keywords:
coal, efficiency, HRC, LRCAbstract
Coal is one of most favorable energy source due to its high calorific value and easily processed. In 2022 until 2024, coal price rose significantly, leading to energy crisis because some CFPP need to stop operating due to lack of coal supply, especially CFPP with high rank coal as its primary fuel designed. Coal blending with LRC is one of best method to maintain CFPP sustainability in the middle of coal crisis. A simulation using GateCycle as a tool is conducted to study change of boiler operating parameter and boiler performance while using coal blending method in 100 MW Ombilin CFPP. From the simulation and study, increased LRC composition will result in increasing of coal flow by 0.253 t/h for every 1% LRC composition and FDF electrical load by 18.48% due to increased combustion air flow. Boiler efficiency also reduced from 91.94 %to 86.20% due to high moisture content. With maximum mill capacity as its constraint, in order to produce 100 MW, maximum allowable LRC composition of coal blending in Ombilin CFPP is 37%.
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