Development of Micro Separation Technology Modules. Part 2: Distillation

• Published in: Chemie ingenieur technik Vol. 87; no. 9; pp. 1207 - 1214
• Main Authors: Stanisch, Benjamin, Wellsandt, Tim, Strube, Jochen
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.09.2015; WILEY‐VCH Verlag
• Subjects: Capillarity; Capillary separation; Devices; Distillation; Liquid-liquid extraction; Micro separation; Modules; Process intensification; Process parameters; Process simulation; Rectification; Separation; Simulation
• ISSN: 0009-286X; 1522-2640
• DOI: 10.1002/cite.201400075

The subject of previous work on liquid‐liquid extraction is complemented in this paper through the research activities in micro distillation. After a detailed literature study comparing the performance, strengths, and weaknesses of published micro distillation methods, critical process parameters based on model studies will be discussed. Apparative approaches to micro distillation are presented, where the capillary module used for distillation can provide a successful phase separation of gas‐liquid mixtures up to volume feeds of 10 mL min−1. As complementation of previous work on liquid‐liquid extraction, distillation using micro effects is examined based on literature data and simulation studies. The critical parameters influencing the separation performance are identified and experimental work separating a ethanol‐water mixture by using a capillary force based micro device is presented.