文献类型：期刊文献

英文题名：Two-Stage VPSA Process for CO₂ Capture from Flue Gas Using Activated Carbon Beads

作者：Shen, Chunzhi[1];Liu, Zhen[1];Li, Ping[1];Yu, Jianguo[1]

机构：[1]E China Univ Sci & Technol, Coll Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：51

期号：13

起止页码：5011

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000302833600030)】；

基金：The authors are grateful for the financial support of the China 863 Program (Grant No. 2008AA062302), Shanghai International Cooperation Project (Grant No. 08160704000), and Shanghai Pujiang Talent Program (Grant No. 08PJ14034). The authors also acknowledge Professor Ling Licheng for providing the activated carbon beads.

语种：英文

摘要：Carbon dioxide removal from flue gas with a two-stage vacuum pressure swing adsorption (VPSA) process, which uses activated carbon (AC) beads as the adsorbent, was investigated both theoretically and experimentally. First, single-column VPSA experiments were studied for CO2/N-2 separation with high CO, feed concentration. Then, a two-stage VPSA process composed two columns for each stage was designed, and the effects of different parameters were investigated. The first-stage VPSA unit operates with a four-step Skarstrom cycle, which includes feed pressurization, adsorption, blowdown, and countercurrent purge with N-2. For the second-stage VPSA process, a cycle with feed pressurization, adsorption, pressure equalization, blowdown and pressure equalization was employed. With the proposed two-stage VPSA process, a CO2 purity of 95.3% was obtained with 74.4% recovery. The total specific power consumption of the two-stage VPSA process is 723.6 kJ/kg-CO2, while the unit productivity is 0.85 mol-CO2/kg.h.