THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Peng Li

,

Baokuan Li

,

Zhongqiu Liu

,

Wenjie Rong

EVALUATION AND ANALYSIS OF EXERGOECONOMIC PERFORMANCE FOR THE CALCINATION PROCESS OF GREEN PETROLEUM COKE IN VERTICAL SHAFT KILN

ABSTRACT
The main objective of this paper is to establish a mathematical framework to analyze the complex thermal economic performance of the calcination process. To find the factors affecting exergy efficiency loss, different exergy destruction is investigated in detail. Furthermore, the exergy flow cost model for exergy cost saving has also been developed. The results show that the vertical shaft furnace is a self-sufficiency equipment without additional fuel required, but the overall exergy destruction accounts for 54.11% of the total exergy input. In addition, the energy efficiency of the waste heat recovery boiler and thermal deaerator are 83.52% and 96.40%, whereas the exergy efficiency of the two equipment are 65.98% and 94.27%. Furthermore, the import exergy flow cost of vertical shaft furnace, waste heat recovery boiler and thermal deaerator are 366.5197 RMB per MJ, 0.1426 RMB per MJ, and 0.0020 RMB per MJ, respectively. Based on the result, several suggestions were proposed to improve the exergoeconomic performance. Assessing the performance of suggested improvements, the total exergy destruction of vertical shaft furnace is reduced to 134.34 GJ per hours and the exergy efficiency of waste heat recovery boiler is raised up to 66.02%. Moreover, the import exergy flow cost of the three different equipment is reduced to 0.0329 RMB per MJ, 0.1304 RMB per MJ, and 0.0002 RMB per MJ, respectively.
KEYWORDS
calcinations process, vertical shaft furnace, exergy analysis, exergy flow cost, Exergoeconomic analysis
PAPER SUBMITTED: 2021-06-09
PAPER REVISED: 2021-08-14
PAPER ACCEPTED: 2021-08-17
PUBLISHED ONLINE: 2021-10-10
DOI REFERENCE: https://doi.org/10.2298/TSCI210609294L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 2, PAGES [1999 - 2012]
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Evaluation and analysis of exergoeconomic performance for the calcination process of green petroleum coke in vertical shaft kiln

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence