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模拟移动床分离人参皂苷Rg1和Re的稳态、暂态过程

Fine Chemicals(2009)

Cited 23|Views21
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Abstract
利用三带无回流模拟移动床(Moving-bed Simulation,简称MBS)系统分离了人参皂苷Rg1、Re,对其分离的稳态和暂态过程进行了考察。首先,用三角形法确定了MBS的可分离区间,从而确定MBS操作参数选择范围。对稳态过程,分析了三角形区间内不同参数对MBS产品质量分数的影响。对暂态过程,讨论了三角形中不同参数对暂态过程经历时间的影响。还讨论了采用预注入(Pre-loading)和预洗脱(Pre-elution)对暂态过程经历时间的影响。结果表明:在暂态过程中,增大进样流量(QF)或降低切换时间(tS),可以缩短两个出口的暂态过程经历的时间。用Pre-loading和Pre-elution可以显著地缩短暂态过程经历时间。
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Key words
steady-state,moving-bed simulation,transient,Ginsenoside Rg1 and Re,modernization technology of traditional Chinese medicines
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