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1. (WO2012042113) FALLING FILM EVAPORATOR

Pub. No.:    WO/2012/042113    International Application No.:    PCT/FI2011/050838
Publication Date: Apr 5, 2012 International Filing Date: Sep 28, 2011
IPC: B01D 1/06
Applicants: RINHEAT OY
ARTAMO, Arvi
JUHOLA, Pentti
Inventors: ARTAMO, Arvi
JUHOLA, Pentti
Title: FALLING FILM EVAPORATOR
Abstract:
The invention relates to a falling film evaporator, comprising an outer shell formed by a cylindrical shell (1) and convex ends (2,3), at least one tube bundle (4,5) formed of vertical tubes (6) arranged inside the outer shell, whereby a heat- releasing, condensable vapour can be fed into the vertical tubes (6) from below up- wards, and a heat-receiving, vaporizable liquid can be fed to the upper end of said tube bundle (4,5) to flow downwards along the outer surface of the vertical tubes (6) as a thin liquid layer, whereby means for discharging non-condensable gases contained in the heat-releasing vapour has been arranged in the tube bundle (4, 5). The invention is characterized in that the evaporator comprises two or more tube bundles (4, 5) each being provided with a tube plate (7, 8) of its own, whereby the vertical tubes (6) of each tube bundle (4, 5) are at their lower ends attached to the tube plate (7, 8) of the corresponding tube bundle (4, 5) and at their upper ends to collecting manifolds (9) of the corresponding tube bundle (4, 5).