检索结果-南通市图书馆

检索条件"主题词=stage efficiency"

共 1 条记录，以下是1-10 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Counter current chromatography numerical simulation

Counter current chromatography numerical simulation

引用

第十届全国计算(机)化学学术会议

作者： Zhaohui Yang,Bing Wang,Yizeng Liang (College of Chemistry and Chemical Engineering,Research Center of Modernization of Chinese Medicines, Central South University,Changsha,410083,People’s Republic of China,)

For measuring a certain solute’s concentration distribution in counter current chromatography tube,a numerical model was suggested for calculation of the retention volume (V) and simulation of ***-stage ratio(RSR) was introduced to describe retention time;it has positive proportion to the retention time(RSR =(F/V)t,where F is the flow rate;V is the balance mobile phase volume;t is time.).RSR(RSR =[(1-S+ kS)/(1 - S)](1 -1/n), where S is the retention ratio of stationary phase,n is stages number.) is a constant for a specified k value for a large number of stages(k value is defined as the proportion of concentration in the stationary phase and mobile phase).For a certain material,the concentration distribution is a Negative Binomial(x= Cpqx,where x is the concentration for a solute which distribution ratio is k,x is the initial concentration,p=(1-S)/(1-S+kS), q = kS/(1-S+kS)).For some solvent system,the consumed time for the balance of the solvents is very long and the consumption of solvents is costly,solvents reuse became very important,especially for the balanced ***-feed is essential for such a time and money consumed *** numerical model can predict the optimal feed *** influence to the process for the amount of a feeding solute is discussed *** efficiency(E),which was defined as E = n/n(n is stages,which can be measured by the equation n=1/2πqX,where X is the dimensionless concentration.),was introduced to determine the effect to the spectrum by different k values of different components.

关键词： numerical model retention volume row-stage ratio negative binomial multi-feed stage efficiency

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

全选清除本页清除全部题录导出标记到“检索档案”

共1页 << < 1 > >>

回到顶部

执行限定条件

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：