Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China.
Environ Sci Pollut Res Int. 2023 Jul;30(31):76471-76490. doi: 10.1007/s11356-023-27872-8. Epub 2023 Jun 6.
Sulfur dioxide, which comes from the flue gas emitted by the steel and coal power industries, is extremely harmful to humans and the natural environment. Due to its high efficiency and economy, dry fixed-bed desulfurization technology and Ca-based adsorbents have attracted wide attention. In this paper, a detailed outline of the process of the fixed-bed reactor, performance indexes, economic value, recent research, and industrial applications of the dry fixed-bed desulfurization process was summarized. The classification and properties, preparation method, desulfurization mechanism, and influencing factors of Ca-based adsorbents were discussed. This review indicated the challenges in the commercialization of dry Ca-based fixed-bed desulfurization and demonstrated the possible solutions. It is beneficial to promote industrial application by improving the utilization efficiency of Ca-based adsorbent, reducing the amount of adsorbent and operation cost, and developing ideal regeneration methods.
二氧化硫来自钢铁和燃煤工业排放的烟道气，对人类和自然环境极其有害。由于其高效和经济，干法固定床脱硫技术和钙基吸附剂引起了广泛关注。本文详细总结了干法固定床脱硫工艺的固定床反应器过程、性能指标、经济价值、最新研究和工业应用。讨论了钙基吸附剂的分类和性质、制备方法、脱硫机理和影响因素。本文综述了干法钙基固定床脱硫商业化面临的挑战，并提出了可能的解决方案。通过提高钙基吸附剂的利用率、降低吸附剂用量和运行成本，以及开发理想的再生方法，有利于促进工业应用。
