An Investigation into the Effects of Coke Dry Quenching Waste Heat Production on the Cost of the Steel Manufacturing Process

Lin Lu (), Zhipeng Yan, Xilong Yao and Yunfei Han
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Lin Lu: College of Economics and Management, Taiyuan University of Technology, Jinzhong 030600, China
Zhipeng Yan: State Grid Shanxi Electric Power Company, Taiyuan 030021, China
Xilong Yao: College of Economics and Management, Taiyuan University of Technology, Jinzhong 030600, China
Yunfei Han: College of Economics and Management, Taiyuan University of Technology, Jinzhong 030600, China

Sustainability, 2025, vol. 17, issue 10, 1-30

Abstract: It is essential to evaluate the prospective development trends of coke dry quenching (CDQ) waste heat power generation, to reduce the comprehensive cost of the steelmaking system. Based on TIMES energy system optimization model, this study develops a model of China’s iron and steel production. Three scenarios are established, predictions and comparisons are conducted regarding the iron and steel production structure, total CDQ quantity, CO 2 and pollutant emissions under these scenarios. The findings indicate that: (1) The advancement of hydrogen metallurgy and EAF scrap smelting facilitates a reduction in the quantity of BF-BOF steelmaking and total CDQ consumption. (2) The decreasing demand for CDQ shows that the shift to clean production alters process pathways and compels the energy system from scale-driven to flexibility-focused. (3) The marginal value of the CDQ system is contingent upon the targeted policy support for multi-energy co-generation systems and their deep integration with hydrogen infrastructure. Accordingly, the utilization of CDQ waste heat power generation should be considered as a transitional strategy, it will be imperative to implement a reduction in capacity.

Keywords: TIMES model; CDQ waste heat power generation; steel system; cost analysis; scenario analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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