Liquid purification or separation – With heater or heat exchanger – With mechanical agitator or movable separator
Patent
1988-11-14
1991-02-26
Sever, Frank
Liquid purification or separation
With heater or heat exchanger
With mechanical agitator or movable separator
210180, 210184, 210226, 210351, 210359, 210386, B01D 1700, B01D 2512, B01D 3322
Patent
active
049959727
ABSTRACT:
Disclosed herein are a method and apparatus for removing liquid from a permeable material, such as slurries, sludges, porous solids and permeable foams. The method and apparatus involve constraining the material to be deliquified such that the material interfaces with at least one surface which is permeable to the liquid to be removed and then heating the material at one or more locations remote from the permeable surface or surfaces. Such constraining and heating of the material causes the in situ vaporization of the liquid in the vicinity of the remote location or locations. The vaporized liquid expands and forces at least some of the remaining unvaporized liquid through the permeable surface or surfaces. Because only a portion of the liquid contained in the material must be vaporized and such vaporized portion is used to remove at least some of the remaining unvaporized liquid (thereby avoiding the necessity of vaporizing all of the liquid contained in the material), significant reductions in the energy required to substantially deliquify the material may be realized through the use of the method and apparatus disclosed herein.
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Kramer Kent M.
Kramer Timothy A.
Selitto, Jr. Ralph W.
Sever Frank
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