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A Review on Desulfurization Technologies of Blast Furnace Gases

  • Air Pollution (H Zhang and Y Sun, Section Editors)
  • Published:
Current Pollution Reports Aims and scope Submit manuscript

Abstract

The blast furnace gas, a low-calorific value fuel, is worthy of recycling. However, the sulfuric contents in blast furnace gases would cause pipeline corrosion and air pollution that are adverse to reutilization of blast furnace gases. Therefore, desulfurization technologies of blast furnace gas are necessary, which have been recently attracting much attention. This article clarifies main sources and forms of sulfur in blast furnace gases. Then, COS/H2S removal methods that are commonly used are introduced. In fact, blast furnace gases usually exist in low-temperature and low-pressure conditions, whose major components are N2/CO/CO2/H2 and minor components are sulfide/chloride. When blast furnace gases are used as a fuel, the sulfuric component will be converted into SO2 that causes severe air pollution to atmospheric environments. However, according to recent findings, once sulfides are removed ahead of the utilization process of blast furnace gases, other air-polluting components (e.g., hydrogen chloride) could be also removed via synergistic effects. In light of these characteristics, this article discusses the feasibility of various desulfurization methods suitable for blast furnace gases with the aim to provide useful information for the development of blast furnace gas desulfurization technologies.

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Authors and Affiliations

  1. Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China

    Pengfei Li & Yuqun Zhuo

  2. Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing, 100084, People’s Republic of China

    Pengfei Li & Yuqun Zhuo

  3. State Key Laboratory of Iron and Steel Industry Environmental Protection, Beijing, 100088, People’s Republic of China

    Pengfei Li, Guangchun Wang & Yuan Dong

  4. Energy Conservation and Environment Protection Co. Ltd, Mcc Group, Beijing, 100088, People’s Republic of China

    Pengfei Li, Guangchun Wang & Yuan Dong

  5. Tsinghua Shanxi Institute of Clean Energy, Taiyuan, 030032, Shanxi, People’s Republic of China

    Yuqun Zhuo

  6. Research Institute of Petroleum Processing, SINOPEC, Beijing, 100083, People’s Republic of China

    Yaming Fan

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  1. Pengfei Li
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  2. Guangchun Wang
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  3. Yuan Dong
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Correspondence to Yuqun Zhuo.

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Li, P., Wang, G., Dong, Y. et al. A Review on Desulfurization Technologies of Blast Furnace Gases. Curr Pollution Rep 8, 189–200 (2022). https://doi.org/10.1007/s40726-022-00212-z

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  • DOI: https://doi.org/10.1007/s40726-022-00212-z

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