Abstract

The performance of a three-module single-compressor membrane cascade of the “continuous membrane column” type in separation of a ternary gas mixture close in composition to power plant flue gas (N₂/O₂/CO₂ = 84/9.6/6.4 vol %) has been experimentally evaluated. Within the scope of the study, the operation of each of the sections of the device, stripping and enrichment, has been analyzed and the relations between the compositions of gas stream taken out of these sections and the ratio of flow rate of these streams to the feed flow rate of the membrane cascade have been determined. In addition, the effectiveness of carbon dioxide capture has been assessed. The CO₂ purity achieved was as high as 91 vol %. The prospects of using the device under study for capturing carbon dioxide from power plant flue gas have been demonstrated.

中文翻译：

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在二氧化碳捕集应用中膜级联式“连续膜柱”效率的实验评估

摘要

“连续膜塔”型三模块单压缩机膜级联在分离与电厂烟气成分接近的三元气体混合物时的性能（N ₂ / O ₂ / CO ₂ = 84 / 9.6 / 6.4已通过实验评估。在研究范围内，分析了该装置各段的操作，汽提和浓缩，并从这些段中取出的气流组成与这些气流与塔的流量之比之间的关系。已经确定了膜级联的进料流速。另外，已经评估了二氧化碳捕获的有效性。一氧化碳₂获得的纯度高达91体积％。已经证明了使用所研究的设备从电厂烟气中捕集二氧化碳的前景。