高校化学工程学报2016，Vol.30Issue(5)：1027-1035,9.DOI:10.3969/j.issn.1003-9015.2016.05.007
真空变压吸附提纯合成气中CO的实验与模拟
Experimental and Simulative Studies on Vacuum Pressure Swing Adsorption Processes for CO Purification from Syngas
摘要
Abstract
A home-made copper-loaded activated carbon adsorbent was employed for CO adsorption. Simulation results showed high CO selectivity of the adsorbent and a mathematical model was used to predict its performance in adsorption fixed-beds, which were further confirmed by experiments. The CO purification process from syngas (28.2%CO/46.9%H2/2.3%CH4/1.2%CO2/21.4%N2)(V) by vacuum pressure swing adsorption (VPSA) was further studied based on numerical simulation. Numerical calculation results of 15 beds indicate that a CO rich product with 99.5%(V) purity and 95.0% recovery is achieved, and higher adsorbent productivity of 3.36 mol CO.kg ads-1.h-1 with lower specific power consumption of 0.107 kWh.Nm-3 feed can be achieved. The relationship between operation parameters and adsorption separation performance were studied systematically. Results of parameters analysis show that it is inappropriate to choose larger desorption vacuum degree and product gas flow for higher product purity and lower specific power consumption, and the product purity and recovery fluctuate greatly with the variation of feed and displacement flowrates. An optimal feed and displacement condition should be taken into account to obtain higher CO recovery under separation requirements. Meanwhile, these results also provide fundamental parameters for guiding the design and optimization of CO purification from industrial syngas exhaust gas and subsequent hydrogen purification devices.关键词
载铜活性炭/合成气/变压吸附/参数分析Key words
copper-loaded activated carbon/syngas/pressure swing adsorption/parameter analysis分类
化学化工引用本文复制引用
周言,阎海宇,李冬冬,张东辉..真空变压吸附提纯合成气中CO的实验与模拟[J].高校化学工程学报,2016,30(5):1027-1035,9.基金项目
天津市科技支撑项目(2009F3-0005)。 （2009F3-0005）
