Abstract: In this work，the research progress in HCl removal technology using Ca-based sorbents was summarized. The dechlorination characteristics of various Ca-based sorbents and different methods to improve sorbent performance were introduced. The influence of Ca/Cl molar ratio，reaction temperature，particle size，reaction atmosphere on the dechlorination of Ca-based sorbents was also discussed. The research emphases should be focused on the mechanism of dechlorination reactions and the solutions to key problems，such as low dechlorination efficiency. In addition，the necessity of HCl removal was discussed in the process of biomass gasification reforming for the hydrogen production coupling with CO2 capture using Ca-based sorbents. The possible effect of HCl on cyclic CO2 capture by Ca-based sorbents was proposed. Furthermore，the competitive reaction rules and interaction mechanisms between HCl and CO2 with Ca-based sorbents and their cooperative control method should be investigated. It is significantly important to simultaneously capture CO2 and HCl in the biomass gasification reforming for hydrogen production.

Key words: Ca-based sorbents, chlorine hydrid（HCl）, dechlorination performance

摘要： 对钙基吸收剂脱除HCl技术的国内外研究进展进行了综述，介绍了不同类型钙基吸收剂的脱氯特性和提高钙基吸收剂脱除HCl性能的各种方法，讨论了Ca/Cl摩尔比、反应温度、粒径、反应气氛等因素对吸收剂脱氯性能的影响规律。提出重点应加强钙基吸收剂脱氯反应机理研究，解决脱氯效率较低等关键问题。并论述了生物质气化重整制氢与钙基吸收剂捕集CO2耦合技术中HCl脱除的必要性，提出HCl对钙基吸收剂循环捕集CO2性能可能存在影响。指出需研究HCl和CO2与钙基吸收剂的竞争反应规律和相互作用机理并提出协同调控方法，这对于生物质气化重整制氢技术协同捕集CO2和HCl意义重大。

关键词: 钙基吸收剂, HCl气体, 脱氯性能