中南大学学报（自然科学版）Issue(5)：1959-1966,8.DOI:10.11817/j.issn.1672-7207.2015.05.052
活性炭变压吸附二氧化硫的传热传质规律
Heat and mass transfer in pressure swing adsorption of sulfur dioxide gas by activated carbon
摘要
Abstract
The heat and mass transfer in a fix bed of activated carbon (AC) for SO2 adsorption and the variation of the ratio of desorption gas condensability were investigated based on a double bed five steps pressure swing adsorption (PSA). The results show that the temperature curves of different heights change with the change of periodicity, and that mass transfer mainly occurs in the area of 0.08−0.15 m. The concentration of gas phase composition decreases gradually with the increase of adsorption column height. It enters a stability stage after 400 cycles. No SO2 is detected when the bed height is higher than 0.60 m. During the purge desorption and vacuum desorption stage, the ratio of desorption gas condensability increases, then tends to stable, and finally declines with the increase of desorption time. In experiment conditions, the best operation time for each stage are adsorption with 170 s, purge desorption with 15 s, vacuum desorption with 180 s, and balance pressure with 3 s. The average condensability of SO2 in desorption gas can achieve 2.0.关键词
变压吸附/温度/气相质量浓度/脱附气/浓缩率Key words
pressure swing adsorption/temperature/gas phase mass concentration/desorption gas/condensability ratio分类
资源环境引用本文复制引用
刘峥,李立清,黄贵杰,姚小龙..活性炭变压吸附二氧化硫的传热传质规律[J].中南大学学报（自然科学版）,2015,(5):1959-1966,8.基金项目
国家自然科学基金资助项目(20976200，21376274)@@@@(Projects(20976200,21376274) supported by the National Natural Science Foundation of China) （20976200，21376274）
