Coal Fuel Efficiency with Mixed Palm Shell Biomass for Steam Power Plant

H. Eteruddin, Zulfahri Dept, of Electrical, Engineering, M. Ridwan, Y. Arief, Fathimah Hasanti
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Abstract

The accumulation of coal-based fuels is depleting and to obtain coal fuel requires a great amount of money, as a corollary, measures must be taken to reduce the usage of this fuel. PT. Pembangkit Jawa Bali (PJB) is currently investigating the co-firing technique by using oil palm shell biomass waste as a combination coal fuel with a proportion of 95% coal and 5% palm shell, the efficiency results will be compared to 100% of coal fuel. In this research, the Mathcad program and the Professional Simulator 8 were employed, the specific fuel consumption (SFC) technique is used to determine the efficiency of production expenses, as well as the direct and indirect methods to calculate the boiler efficiency. The results reveal that 4.09 IDR/kWh reduction in primary energy expenses could be achieved (0.65%). Co-firing fuel will undoubtedly have a significant impact on the boiler's performance, therefore when using 100% of coal as a fuel, the boiler efficiency value is 63.38% (Direct Method), while using the Indirect Method will produce up to 82.24%, respectively. However, when using co-firing fuel with 95% of coal and 5% of palm shell (Direct Method), the boiler efficiency value is 63.92%, and 83.71% when using the Indirect Method.
混合棕榈壳生物质用于蒸汽发电厂的煤燃料效率
煤基燃料的积累正在耗尽,获得煤燃料需要大量的资金,因此必须采取措施减少这种燃料的使用。PT. Pembangkit Jawa Bali (PJB)目前正在研究使用油棕壳生物质废弃物作为组合煤燃料的共烧技术,其比例为95%的煤和5%的棕榈壳,其效率结果将与100%的煤燃料进行比较。本研究采用Mathcad程序和Professional Simulator 8,采用比燃料消耗(SFC)法确定生产费用效率,采用直接法和间接法计算锅炉效率。结果表明,可实现一次能源费用降低4.09 IDR/kWh(0.65%)。混燃燃料无疑会对锅炉的性能产生重大影响,因此当100%使用煤炭作为燃料时,锅炉效率值(直接法)为63.38%,而使用间接法时,锅炉效率值分别高达82.24%。而使用95%煤和5%棕榈壳共燃燃料(直接法)时,锅炉效率值为63.92%,使用间接法时,锅炉效率值为83.71%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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