Analysis Study of Performance and Reliability Impact in Boiler Through Differential Coal Calorific Value (Case Study: Pelabuhan Ratu Coal-Fired Power Plant)

Hendra Yudisaputro*, M. Nur Yuniarto, Yohanes, Agus Wibawa

*Corresponding author for this work

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

Abstract

This study presents an analysis of coal switching impact by using 3500–4300 kcal/kg of calorific value (plant design more than 4500 kcal/kg) through power plant performance. It aims to investigate changes in thermal efficiency and reliability of main equipment in the boiler and optimize fuel cost by determining the cheapest coal for the power generation process. The research has been done based on a 340 MW subcritical coal-fired power plant model and experimental test with five different types of coal. Furthermore, critical equipment identification and component reliability were analyzed by calculating the boiler system's Asset Criticality Ranking value. At the same time, Reliability Block Diagrams (RBD) were also simulated based on five years of historical failure data. The results show that thermal plant efficiency decreases 0.13% in line with decreased coal calorific value every 97 kcal/kg. The optimum calorific value for the electricity production process is between 4200 and 4300 kcal/kg. The critical component of the boiler equipment is the mill, with an average ACR value of 7.81. The five mill components with the lowest availability values based on RBD analysis are Coal Pipe, Damper, Lub Oil Station, Pyrite Gate and Swing Valve with values of 0.648, 0.74, 0.91, 0.922 and 0.881, respectively. The coal calorific value has a significant influence on the efficiency and reliability of the boiler so that proper maintenance activities are needed to avoid more severe damage.

Original languageEnglish
Title of host publicationRecent Advances in Renewable Energy Systems - Select Proceedings of ICOME 2021
EditorsMohan Kolhe, Aziz Muhammad, Abdel El Kharbachi, Tri Yogi Yuwono
PublisherSpringer Science and Business Media Deutschland GmbH
Pages105-111
Number of pages7
ISBN (Print)9789811915802
DOIs
Publication statusPublished - 2022
Event5th International Conference on Mechanical Engineering, ICOME 2021 - Virtual, Online
Duration: 25 Aug 202126 Aug 2021

Publication series

NameLecture Notes in Electrical Engineering
Volume876
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

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

Keywords

  • Calorific value
  • Coal
  • Efficiency
  • Heat rate
  • Reliability

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