Concentration process by multistage, multiple effect evaporator
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorShinsaku Ogawa
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Abstract
A method and apparatus in which the effects in multiple effect evaporation systems are separated into successive stages and the vapors in the stages of one effect are utilized as a heat source for the liquid in stages of a subsequent effect.
Claims9
In a multiple effect evaporation system for the concentration of liquids containing a solute in a solution wherein the vapor from each effect is used to heat the liquid in the next subsequent effect, the improvement which comprises dividing each effect into a number of successive stages through which the liquid flows in the direction of increasing concentration, each stage being provided with heating means, and utilizing the vapors selected from the stages in one effect as said heating means to heat the liquid in each stage in the next subsequent effect;
- said vapors being selected so that the vapors from the stages in one effect are utilized in order of decreasing concentration of solute in the solution to heat the liquids in the next subsequent effect in order of increasing concentration of solute in solution.
Dependencies are inferred from the claim text.