Evaluation of ultra-low emission transformation process of coke oven flue gas in iron and steel industry using LCA method

SHI Meixue; SUN Sijia; XIAO Liping; DENG Zhiyi; ZHAO Cheng; CHEN Zhihang

doi:10.13205/j.hjgc.202510024

Volume 43 Issue 10

Oct. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(10): 217-225

SHI Meixue, SUN Sijia, XIAO Liping, DENG Zhiyi, ZHAO Cheng, CHEN Zhihang. Evaluation of ultra-low emission transformation process of coke oven flue gas in iron and steel industry using LCA method[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 217-225. doi: 10.13205/j.hjgc.202510024

Citation:

SHI Meixue, SUN Sijia, XIAO Liping, DENG Zhiyi, ZHAO Cheng, CHEN Zhihang. Evaluation of ultra-low emission transformation process of coke oven flue gas in iron and steel industry using LCA method[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 217-225. doi: 10.13205/j.hjgc.202510024

Citation:

SHI Meixue, SUN Sijia, XIAO Liping, DENG Zhiyi, ZHAO Cheng, CHEN Zhihang. Evaluation of ultra-low emission transformation process of coke oven flue gas in iron and steel industry using LCA method[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 217-225. doi: 10.13205/j.hjgc.202510024

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Evaluation of ultra-low emission transformation process of coke oven flue gas in iron and steel industry using LCA method

doi: 10.13205/j.hjgc.202510024

1. College of Environment and Resources, Xiangtan University, Xiangtan 411105, China;
2. Shaoyang Poletechnic, Shaoyang 422004, China;
3. Guangdong Key Lab of Water & Air Pollution Control, Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Science, MEE, Guangzhou 510535, China

Received Date: 2023-12-26
Accepted Date: 2024-03-05
Rev Recd Date: 2024-01-23

Available Online: 2025-12-03

Publish Date: 2025-10-01

Abstract

Abstract

The ultra-low emission transformation treatment of coke oven flue gas is one of the key projects in the steel industry. The selection and optimization of the treatment process are crucial to achieving ultra-low emission modification goals， which can be evaluated using quantitative methods. In this paper， two treatment processes of existing coke oven flue gas ultra-low emission modification in a large steel company（Company S） were considered as the research objects. Based on field investigations， the life cycle assessment（LCA） method was adopted to build a relevant model and the quantitative impact results of two processes were calculated by Simapro software. The results showed that Process A （activated coke adsorption desulfurization and denitration） achieved a 64.56% reduction in environmental impact， compared to Process B （dense-flow absorber flue gas desulfurization + ceramic filter cartridge desulfurization and denitration integrated process）， representing an optimized ultra-low emission solution for coke oven flue gas treatment. The potential environmental impacts of two processes were mainly distributed in human carcinogenicity， ozone formation （impacts on human health）， freshwater ecotoxicity， freshwater eutrophication， and marine ecotoxicity. Furthermore， the key affecting factors for both processes were coke oven gas and electricity. In view of the two key factors， preliminary suggestions were proposed on improving the environmental impacts of both processes， which could serve as a reference for the selection and optimization of ultra-low emission transformation processes for coke oven flue gas.
- iron and steel industry,
- coke oven flue gas,
- ultra-low emission,
- life cycle assessment,
- modeling

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References(19)

References

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