F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
F28F 3/00 (2006.01) F28F 3/12 (2006.01) F28F 21/00 (2006.01)
Patent
CA 2083118
ABSTRACT OF THE DISCLOSURE A heat exchanger, evaporator made from the heat exchanger, and method of utilization thereof, take advantage of the thin yet strong and good heat exchange surface that is provided by a metal-plastic laminate. A laminate is typically either one plastic layer and a metal layer, or two plastic layers sandwiching a metal layer between them. The laminate normally has a thickness of less than about 200 microns, for example the metal foil layer having a thickness of about 5-40 microns and the plastic layer a thickness of about 12-25 microns. Aluminum, copper, and brass are good metals, while polyester and polyolefins are good plastics. Cellulose pulp mill plant liquid effluents may be passed in a falling film over the laminates to evaporate them, while steam is passed in the interior chamber between two laminates forming an evaporator.
A. Ahlstrom Corporation
Gowling Lafleur Henderson Llp
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