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微型变压吸附低压差吸附工艺

张 辉,刘应书,党璐璐,李 虎,翟 晖   

  1. 北京科技大学机械工程学院
  • 出版日期:2009-11-05 发布日期:2009-11-05

Experimental study on low differential pressure adsorption process of small-scale oxygen generation by pressure swing adsorption

ZHANG Hui,LIU Yingshu,DANG Lulu,LI Hu,ZHAI Hui   

  1. School of Mechanical EngineeringUniversity of Science and Technology Beijing
  • Online:2009-11-05 Published:2009-11-05

摘要: 通过对微型制氧流程的实验研究和分析,确定了单节流小流量反吹和均压工艺的最佳实验参数,在保证产氧浓度和氧气最大回收率的条件下,该工艺流程吸附压力最低。结果表明:小流量反吹工艺可以提高产品气中氧气浓度(体积分数),吸附塔出口端单向阀可以有效降低吸附压力;双节流反吹工艺虽然可以提高产品气中氧气浓度,但节流孔径限制了产品氧气输出,导致吸附压力升高;单节流小流量反吹工艺和均压工艺中均压时间与瞬洗时间均存在最佳值。

Abstract: Three cycles for small-scale oxygen generation were compared through experimentsin which the cycle with purging through one nozzle with low oxygen flux is proved to be the best. Such a cycle can produce oxygen at lower adsorption pressure. It was found that the one-way valve can reduce adsorption pressure and the small oxygen flux can enhance oxygen concentration in product. The cycle with double nozzles can also increase the oxygen concentration in productwhile it can hold higher adsorption pressure because of the narrow nozzle orifice. Both purging with large flux and equalization times have maximum values for the one nozzle purging cycle.

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