Techno-Economic Analysis of Co-firing for Pulverized Coal Boilers Power Plant in Indonesia

IF 2.4 Q3 ENERGY & FUELS
Z. Arifin, Visang Fardha Sukma Insani, Muhammad Idris, Kartika Raras Hadiyati, Zakie Anugia, Dani Irianto
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引用次数: 1

Abstract

The utilization of co-firing (coal-biomass) in existing coal-fired power plants (CFPPs) is the fastest and most effective way to increase the renewable energy mix, which has been dominated by pulverized coal (PC) boilers, particularly in the Indonesian context. This study aims to investigate the technical and economic aspects of co-firing by conducting a pilot project of three PC boiler plants and capturing several preliminary figures before being implemented for the entire plants in Indonesia. Various measured variables, such as plant efficiency, furnace exit gas temperature (FEGT), fuel characteristic, generating cost (GC), and flue gas emissions, were identified and compared between coal-firing and 5%-biomass co-firing. The result from three different capacities of CFPP shows that co-firing impacts the efficiency of the plant corresponding to biomass heating value linearly and has an insignificant impact on FEGT. Regarding environmental impact, co-firing has a high potential to reduce SO2 and NOx emissions depending on the sulfur and nitrogen content of biomass. SO2 emission decreases by a maximum of 34% and a minimum of 1.88%. While according to economic evaluation, the average electricity GC increases by about 0.25 USD cent/kWh due to biomass price per unit of energy is higher than coal by 0.64×10-3 USD cent/kcal. The accumulation in the one-year operation of 5%-biomass co-firing with a 70% capacity factor produced 285,676 MWh of green energy, equal to 323,749 tCO2e and 143,474 USD of carbon credit. The biomass prices sensitivity analysis found that the fuel price per unit of energy between biomass and coal was the significant parameter to the GC changes.
印尼电站煤粉锅炉共烧技术经济分析
在现有的燃煤发电厂(CFPP)中利用共烧(煤生物质)是增加可再生能源组合的最快、最有效的方式,可再生能源组合一直以煤粉锅炉为主,尤其是在印度尼西亚。本研究旨在通过对三个PC锅炉厂进行试点项目,并在印度尼西亚的整个工厂实施之前获取几个初步数据,来调查共烧的技术和经济方面。确定了各种测量变量,如工厂效率、炉膛出口气体温度(FEGT)、燃料特性、发电成本(GC)和烟气排放,并在燃煤和5%生物质共烧之间进行了比较。CFPP三种不同容量的结果表明,共烧对生物质热值对应的植物效率有线性影响,对FEGT的影响不显著。关于环境影响,根据生物质的硫和氮含量,共烧在减少SO2和NOx排放方面具有很高的潜力。SO2排放量最大下降34%,最小下降1.88%。而根据经济评估,由于单位能源的生物质价格比煤炭高0.64×10-3美元美分/kcal,平均电力GC增加约0.25美元美分/kWh。在一年的运营中,以70%的容量因数进行的5%生物质共烧的积累产生了285676 MWh的绿色能源,相当于323749 tCO2e和143474美元的碳信用。生物质价格敏感性分析发现,生物质和煤炭之间的单位能源燃料价格是GC变化的重要参数。
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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来源期刊
CiteScore
4.50
自引率
16.00%
发文量
83
审稿时长
8 weeks
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