化工学报2013，Vol.64Issue(4)：1364-1372,9.DOI:10.3969/j.issn.0438-1157.2013.04.033
烟气中水蒸气对钙基吸收剂碳酸化的影响特性
Effect of steam in flue gas on CO2 capture for calcium based sorbent
摘要
Abstract
Effect of steam and CO2 concentration in atmosphere at both calcination and carbonation stages on CO2 capture for calcium-based sorbent was investigated in a twin-bed calcination/carbonation cycle reaction system. Microstructure analysis from electronic scan image and N2 adsorption/desorption was supplemented to understand mechanism affecting carbonation by steam. The results show that steam in atmosphere of both calcination and carbonation stages can enhance CO2 capture performance of sorbents, and the optimal mass percent in these atmospheres is 10% and 5%, respectively. Effect of steam at carbonation stage on CO2 capture was stronger for sorbent modified by alumina cement than for natural limestone. High CO2 partial pressure at calcination stage results in severe sintering, thus low capacity of CO2 capture. Increase of CO2 capture performance can be achieved by using steam in the atmosphere of both calcination and carbonation stages because steam in flue gas can improve micro-porosity of these sorbents.关键词
水蒸气/钙基吸收剂/碳酸化Key words
steam/ calcium-based sorbent/ carbonation分类
能源科技引用本文复制引用
陈惠超,赵长遂,沈鹏..烟气中水蒸气对钙基吸收剂碳酸化的影响特性[J].化工学报,2013,64(4):1364-1372,9.基金项目
国家自然科学(青年)基金项目(51206024) （青年）
中国博士后科学基金特别资助项目(2012T50428) （2012T50428）
中国博士后科学基金项目(2011M500837). （2011M500837）
