Numerical Study of the Effect of Excess Air Variation and Biomass Amount at Co-Firing Process for Tangential Coal Pulverized Boiler

Aryo Wicaksono*, Bambang Arip Dwiyantoro

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

There is a power plant with a capacity of 3 × 315 MW which has a tangential pulverized boiler type. This power plant uses an LRC and MRC Coal type for the fuel to produce steam which is used to rotate steam turbine that coupled with a generator to produce electric power. The Indonesian government is striving used biomass to decrease using coal fuel until 23%. Previous sub-critical power plant not designed to be a co-firing fuel, and the best way to implement that system is using the direct co-firing method. This power plant has been an experiment using biomass until 1%, and there is no significant effect for the equipment. For the effectiveness combustion still need to do research. In this research are using 3 types fuels, 97.5% coal and 2.5% biomass, 95% coal and 5% biomass, 92.5% coal and 7.5% biomass. And it is also using excess air variation of 15%, 17%, and 20%. Efficiency’s formula was carried out to find optimum variables with biomass and excess air at this power plant that the CFD numerical analysis was carried out to find an optimum model to analyze in more detail the effect to temperature contour, velocity particle combustion. In the end, we obtained that the efficiency biomass is still underusing coal but 97.5% biomass is the best for efficiency between the other variable.

Original languageEnglish
Title of host publicationRecent Advances in Mechanical Engineering - Select Proceedings of ICOME 2021
EditorsIvan Tolj, M.V. Reddy, Achmad Syaifudin
PublisherSpringer Science and Business Media Deutschland GmbH
Pages265-272
Number of pages8
ISBN (Print)9789811908668
DOIs
Publication statusPublished - 2023
Event5th International Conference on Mechanical Engineering, ICOME 2021 - Virtual, Online
Duration: 25 Aug 202126 Aug 2021

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference5th International Conference on Mechanical Engineering, ICOME 2021
CityVirtual, Online
Period25/08/2126/08/21

Keywords

  • Biomass
  • CFD
  • Co-firing
  • Coal pulverized
  • Excess air
  • Pulverizer

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