A Plate Model for Moving Feed-Injection Chromatography. I. Simulation Results

H. Y. Ha, K. H. Row, W. K. Lee

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The plate model was used to clarify the characteristics of a moving feed-injection system. The selected sample system was gas-liquid chromatography for the separation of close-boiling components such as diethyl ether and dichloromethane. The solution of the model for the moving feed-injection system with simplified assumptions was obtained by summing up a series of solutions for a single pulse of feed. The results of the simulation showed that the efficiency of a chromatographic column could be improved by using the moving feed-injection system: the system had narrower bandwidths, higher outlet concentrations, and better resolutions when these were compared to those of preparative chromatography. Moreover, the system had much flexibility in its operation so that the retention times and the bandwidths of the components to be separated could be controlled by changing the feed port velocities. The velocity had optimum values; beyond the optimum value, the resolution became worse. An increased number of ports for feed-injection improved the resolution.

Original languageEnglish
Pages (from-to)141-155
Number of pages15
JournalSeparation Science and Technology
Volume22
Issue number1
DOIs
StatePublished - 1 Jan 1987
Externally publishedYes

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