Method and apparatus for concentrating a liquid

Details Method and apparatus for concentrating a liquid Method and apparatus for concentrating a liquid

1980-02-11

1981-08-18

Yudkoff, Norman

Concentrating evaporators

Closed evaporating chambers

Indirectly heated

159DIG1, 159 1C, 159 16R, 204294, 219284, B01D 100

Patent

active

042844690

ABSTRACT:
A corrosive liquid such as sulphuric acid is concentrated by boiling in an evaporator vessel having a thermosyphon loop connected to the bottom of the vessel. Electrodes of carbon which is essentially free of any organic binders are located in one leg of the thermosyphon loop to heat the liquid by current conducted through the liquid. The electrodes are located well below the liquid surface so that boiling occurs only above the electrode level, reducing erosion of the electrodes. The electrodes are blanketed with air which flows through the porous carbon into the liquid, thereby protecting the seals and electrode connections and also introducing air into the thermosyphon loop to promote circulation of the liquid in the loop.

REFERENCES:
patent: 2772975 (1956-12-01), Rickers
patent: 3181593 (1965-05-01), Lindley
patent: 3298940 (1967-01-01), Ashley et al.

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