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1. (WO2018102835) APPARATUS AND METHOD FOR EVAPORATION TO CONCENTRATE SENSITIVE SUBSTANCES IN SOLUTIONS

Pub. No.:    WO/2018/102835    International Application No.:    PCT/VN2017/000011
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Sat Nov 25 00:59:59 CET 2017
IPC: A23L 2/08
A23L 3/16
B01D 1/00
Applicants: NMT TECHNOLOGY CO., LTD
GVT VERFAHRENSTECHNIK GMBH
Inventors: NGUYEN, Minh Tan
WOLFGANG, M. Samhaber
Title: APPARATUS AND METHOD FOR EVAPORATION TO CONCENTRATE SENSITIVE SUBSTANCES IN SOLUTIONS
Abstract:
The invention relates to the apparatus and method for evaporation to concentrate heat- sensitive solutions at moderate temperature and ambient pressure by irrigating heat- sensitive solutions on the vapor/liquid contact surface enhanced structure (1.1.1), fluids is then be equally distributed within the vapor/liquid contact surface enhanced structure (1.1.1) in form of droplets and flow top down, the solution is simultaneously heated up by the primary heat exchanger located within the vapor/liquid contact surface enhanced structure (1.1.1). Air is blown through the vapor/liquid contact surface enhanced structure (1.1) in opposite direction of the fluid flow and circulated to entrain solvent vapour from evaporating compartment (1.1) to condensing compartment (1.2) through the connected space between these 2 compartments. Condensation of solvent vapour takes place on the surface of the indirect heat exchanger (1.2.1). Inert gas is introduced into the fluid circulation reservoir (2) in order to minimize the effect of oxidation processes to achieve high quality of concentrated product.