Apparatus for concentrating salt-containing solutions with micro

Details Apparatus for concentrating salt-containing solutions with micro Apparatus for concentrating salt-containing solutions with micro

1998-03-12

2000-06-27

Leung, Philip H.

Electric heating

Microwave heating

Waveguide applicator

219738, 219746, 219762, 219704, 23307, H05B 670, G21F 904

Patent

active

060809779

ABSTRACT:
An apparatus for concentrating and solidifying a salt solution includes a vessel for containing the salt solution having an exposed surface, the vessel having a generally open upper portion, a cover for sealing the generally open upper portion of the vessel and having a generally hood shaped portion, the cover including at least one inlet conduit for admitting the salt solution to the vessel and a discharge conduit for vapor, and a magnetron for generating microwaves for heating the solution in the vessel. A microwave waveguide is disposed between the magnetron and the vessel and incorporates the cover, for directing microwaves from the magnetron into the vessel, the waveguide transitioning within the cover from the generally hood shaped portion into a horn having a variable cross-section and/or variable vertical spacing with respect to the vessel. This structure enables microwaves to be radiated directly onto the exposed surface of the salt solution in the vessel.

REFERENCES:
patent: 2627571 (1953-02-01), Hiehle et al.
patent: 2820127 (1958-01-01), Argento et al.
patent: 4179493 (1979-12-01), Sadan
patent: 4514329 (1985-04-01), Wakabayashi et al.
patent: 4711983 (1987-12-01), Gerling
patent: 4940865 (1990-07-01), Johnson et al.
patent: 5237152 (1993-08-01), Gegenwart et al.

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