小型变压吸附制氧工艺技术研究
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摘要
设计两塔小型变压吸附工艺,研究吸附压力、吸附时间、均压时间对氧气浓度和回收率的影响。结果表明,在一定压力范围内,增加吸附压力可以提高氧气浓度和回收率;随着吸附时间的延长,氧气浓度不断增加,最后达到平稳;增加均压时间可以提高氧气浓度和回收率。运用响应面法分析吸附时间、均压时间、流量对氧气浓度的影响,结果显示,流量对氧气浓度的影响最大,吸附时间次之,均压时间影响最小,最佳工艺条件为:吸附时间5.66 s,均压时间1.00 s,流量5.11 L/min,此时氧气浓度为94.80%,氧气回收率为26.33%。
The effects of some main factors,such as adsorption pressure,adsorption time and pressure equalization time on the purity and recovery of oxygen were discussed systematically by means of two-bed PSA. The results show that increasing the adsorption pressure can improve the purity and recovery of oxygen in a certain pressure range. With the prolonging of the adsorption time,the purity of oxygen is increasing and finally reached steady. Increasing the pressure equalization time can also improve the oxygen purity and recovery. The influence of adsorption time,pressure equalization time and flow rate on the oxygen purity was analyzed by using the response surface methodology. The results show that the effect of flow rate on the oxygen purity is the biggest,followed by the adsorption time and pressure equalization time sequentially.And the optimum conditions are that the adsortion time is 5. 66 s,the pressure time is 1. 00 s,the flow rate is 5. 11 L/min,the oxygen concentration is 94. 80% and the oxygen recovery rate is 26. 33%.
The effects of some main factors,such as adsorption pressure,adsorption time and pressure equalization time on the purity and recovery of oxygen were discussed systematically by means of two-bed PSA. The results show that increasing the adsorption pressure can improve the purity and recovery of oxygen in a certain pressure range. With the prolonging of the adsorption time,the purity of oxygen is increasing and finally reached steady. Increasing the pressure equalization time can also improve the oxygen purity and recovery. The influence of adsorption time,pressure equalization time and flow rate on the oxygen purity was analyzed by using the response surface methodology. The results show that the effect of flow rate on the oxygen purity is the biggest,followed by the adsorption time and pressure equalization time sequentially.And the optimum conditions are that the adsortion time is 5. 66 s,the pressure time is 1. 00 s,the flow rate is 5. 11 L/min,the oxygen concentration is 94. 80% and the oxygen recovery rate is 26. 33%.
引文
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[5]刘应书,乐恺,冯俊小,等.微型PSA制氧技术试验研究[J].北京科技大学学报,2001,23(6):549-551.
[6]安爱华.浅议变压吸附制氧技术及其应用[J].有色金属设计,2001,28(1):18-22.
[7]祝显强,刘应书,焦璐璐,等.快速真空变压吸附制氧的排放气充压过程研究[J].工程科学学报,2015,37(11):1513-1519.
[8]祝显强,刘应书,杨雄,等.中间气两步充压对快速真空变压吸附制氧的影响[J].化工学报,2016,67(10):4264-4272.
[9]祝显强,刘应书,曹永正,等.高原低气压环境局部弥散供氧特性[J].应用基础与工程科学学报,2016,24(2):378-390.
[10]翟晖,刘应书,张辉,等.小型变压吸附制氧的真空解吸实验[J].化工进展,2008,27(7):1061-1064.
[11]王磊,朱孟府,陈平,等.小型医用制供氧系统的研制[J].医疗卫生装备,2016,37(5):8-12.
[12]王磊,朱孟府,陈平,等.小型制供氧装置的研究现状[J].医疗卫生装备,2016,37(2):117-120.
[13]陈平,朱孟府,于佳,等.便携式制氧机研制[J].医疗卫生装备,2013,34(10):77-79.
[14]王永菲,王成国.响应面法的理论与应用[J].中央民族大学学报:自然科学版,2005,14(3):236-240.
[15]卜令兵,刘应书,刘文海,等.压力对微型变压吸附制氧的影响[J].化工进展,2006,25(5):569-572.
[16]Zhang Yuwen,Wu Yuyuan,Gong Jianying,et al.The experimental study on the performance of a small-scale oxygen concentration by PSA[J].Separation and Purification Technology,2005,42:123-127.
[17]曹永正,刘应书.两塔变压吸附循环中两步均压的研究[J].湖南师范大学自然科学学报,2016,39(2):53-58.
[18]杨德.试验设计与分析[M].北京:中国农业出版社,2002.