采用自制的载铜活性炭为吸附剂，实验验证了CO高吸附选择性和吸附固定床数学模型的准确性。通过数值模拟研究了多塔真空变压吸附(VPSA)提纯合成气(28.2%CO/46.9%H2/2.3%CH4/1.2%CO2/21.4%N2)(V)中CO的工艺流程。15塔数值计算结果可获得99.5%(V) CO 纯度和95.0%CO 回收率，同时吸附剂产率高达3.36 mol CO.kgads-1.h-1，而单位能耗低至0.107 kWh.Nm-3 feed。最后，系统考察了操作参数对CO吸附分离性能的影响规律。参数分析研究结果表明，解吸真空度和产品气流量都不宜过大以保证较高产品纯度和较低单位能耗，而产品纯度和回收率受进料流量和置换流量的变化波动较大，应在满足分离要求下选择最佳的进料和置换条件以获得较高的CO回收价值，从而为指导工业合成气尾气提纯CO工艺以及后续氢气纯化工艺装置的设计和调优提供了基本的操作参数。%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.
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