HU Xiude, JIA Weihua, YANG Mingming, LIU Yongzhuo, GUO Qingjie
（a. College of Chemical Engineering； b. Key Laboratory of Clean Chemical Processing of Shandong Province, Qingdao University of Science and Technology, Qingdao 266042, China）
Abstract： Three kinds of Ca-based compound oxygen carriers were prepared by the chemical impregnation mechanical mixing method. A series of experiments of coal chemical-looping gasification with these oxygen carriers were carried out in a fluidized bed reactor. The reactivity, regeneration and sulfur release characteristics of these oxygen carriers were investigated. The results show that at 900 ℃ , the carbon conversion efficiency, cold gas efficiency and synthesis gas content of these compound oxygen carriers are higher than those of CaBen oxygen carrier. The inhibition of CaO to CaSO4 side reaction is obvious. A ten-redox experiment of CaCaBen oxygen carrier with coal is performed to investigate its multiple-cycle reaction performance. The cold gas efficiency maintains at about 83% and the compound oxygen carrier CaCaBen shows a stable reactivity during the multiple redox cycles.
Keywords: compound oxygen carrier; fluidized bed; chemical-looping gasification;sulfur release
中图分类号：TQ 534. 9 文献标志码：A
文章编号：1008-5548（2014）06-0009-05
DOI:10.13732/j.issn.1008-5548.2014.06.002
收稿日期：2014-03-07， 修回日期：2014-03-18，在线出版时间：2014-12-22。
基金项目：国家自然科学基金项目，编号：21276129，20876079；韩 国 能源研究所国际合作研究项目，编号：B3-2421-06。
第一作者简介：胡修德（1987—），男，硕士研究生，研究方向为煤化学链气化。 E-mail: hxde422@163.com。
通信作者简介：郭庆杰（1967—），男，博士，教授，研究方向为清洁化工。E-mail: qj_guo@yahoo.com。
