化工学报2016，Vol.67Issue(12)：5268-5275,8.DOI:10.11949/j.issn.0438-1157.20160816
间歇氯化对电石渣循环捕集CO2性能的影响
Effect of indirect chlorination on cyclic CO2 capture performance of carbide slag
摘要
Abstract
A new method to improve the CO2 capture performance of carbide slag during the cyclic calcination/carbonation process by adding HCl intermittently (indirect chlorination) was proposed in this work. The effects of intermittent addition of HCl on the cyclic carbonation characteristics of carbide slag under different reaction conditions such as cycle number when HCl was added, carbonation temperature and volume ratio of CO2/HCl were investigated in a dual fixed-bed reactor by adding HCl into carbonation atmosphere. The results showed that the CO2 capture performance of carbide slag during the cyclic calcination/carbonation process can be improved by adding HCl intermittently during the carbonation. The optimum CO2 capture performance of carbide slag was achieved when HCl was only added during the first 4 cycles and the CO2 capture capacity after 10 cycles was 51% higher than that without addition of HCl. Chlorination happened between HCl and CaCO3, which decreased CO2 diffusion resistance through the compact product layer of CaCO3, and thus higher carbonation conversion was obtained. The optimum carbonation temperature was still 700℃ in the presence of HCl. As the volume ratio of CO2/HCl increased, the positive effect of HCl on the CO2 capture performance of carbide slag decreased.关键词
电石渣/间歇氯化/钙循环/CO2捕集Key words
carbide slag/indirect chlorination/calcium looping/CO2 capture分类
化学化工引用本文复制引用
马晓彤,李英杰,王文静,张婉,王泽岩..间歇氯化对电石渣循环捕集CO2性能的影响[J].化工学报,2016,67(12):5268-5275,8.基金项目
国家自然科学基金项目（51376003）；山东大学基本科研业务费专项资金项目（2014JC049）。@@@@supported by the National Natural Science Foundation of China (51376003) and the Fundamental Research Funds of Shandong University (2014JC049) （51376003）
