Co-combustion Characteristics of Low- and Medium-Rank Coal of the Circulating Fluidized Bed Boiler Coal Power Plant

2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA) Pub Date : 2019-04-27 DOI:10.1109/ICPEA.2019.8818503

N. Cahyo, R. Sitanggang, Hamdan Hartono Alif, C. Hudaya

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引用次数: 3

Abstract

Co-combustion testing of Low-Rank Coal (LRC) and Medium-Rank Coal (MRC) was carried out in a Circulating Fluidized Bed (CFB) Boiler with a capacity of 16.5 MWe to determine the effects on the performance and characteristics of operational boiler parameters. Coal was initially divided in two different bunkers based on its quality. The big bunker was filled with LRC and the smaller one was filled with MRC. To observe further impact on boiler performance, four different flow ratio percentages were set up through the coal feeder. We found that increasing the MRC ratio contributed to the rising furnace bed and inlet cyclone temperature. This also positively affected the boiler efficiency with the highest value of 86.77 % with full of MRC. However, the co-combustion caused drawbacks due to inhomogeneous temperature distribution within those furnaces. The average bed temperature ranged from 974 0C to 1,000 0C. The Net Plant Heat Rate (NPHR) increased slightly by 3.95 % of the original fuel design.

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循环流化床锅炉燃煤电厂中低阶煤的共燃特性

在16.5 MWe循环流化床(CFB)锅炉上进行了低阶煤(LRC)和中阶煤(MRC)共燃试验，以确定各参数对锅炉运行性能和特性的影响。最初，根据煤的质量，煤被分为两个不同的储存库。大地堡用LRC填充，小地堡用MRC填充。为了进一步观察对锅炉性能的影响，通过给煤机设置了四种不同的流量比百分比。研究发现，MRC比的增加有助于提高炉床温度和进口旋风器温度。这对锅炉效率也有积极的影响，当MRC满时，锅炉效率最高，达到86.77%。然而，由于这些炉内的温度分布不均匀，共燃烧造成了缺点。平均床温为974℃~ 1000℃。净厂热率(NPHR)比原燃料设计略有提高3.95%。

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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2019 IEEE 2nd International Conference on Power and Energy Applications (ICPEA)

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