The design of a novel continuous counter current extractor/separator with mini-hydrocyclones. | [Journal of Pakistan Institute of Chemical Engineers • 1994]

Author(s):

1. Z. H. Rizvi: Institute of Chemical Engineering Technology, Punjab University, Lahore, Pakistan

2. P. E. Preece: Swansea University, Wales, UK

3. C. Mcgreavy: Chemical Engineering Department, University of Leeds, UK

4. G. E. Sachs: Chemical Engineering Department, University of Leeds, UK

Abstract:

The design and operating characteristics of a new type of two stage continuous counter current extractor / separator for liquid-liquid extraction are described. Interface control is achieved without instrumentation, and the stage arrangement is compact and requires less space than does usual contacting equipment. The design is also potentially capital cost effective since extraction and separation are carried out in the same vessel. Extraction and separation are achieved without moving parts in the main contacting vessel. A series of experiments were conducted using "TCE-Water-EA' system. Ethyl acetate was extracted from TCE into water. As calculated by the McCabe-Thiele method, the number of theoretical stages consistently increases with the increase in number of light phase injections. The direct and indirect methods of light phase injections were investigated to enhance the degree of extraction. To investigate the performance of the individual stages using the direct and indirect methods of light phase injections, the stage efficiencies were evaluated under varying operating conditions.

Page(s): 1-24

DOI: DOI not available

Published: Journal: Journal of Pakistan Institute of Chemical Engineers, Volume: 21-22, Issue: 1--2, Year: 1994

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