Method of evaporating and cooling liquid

摘要

A method for evaporating a starting solution to produce an end solution by spraying the starting solution into a gaseous medium under the conditions that the heat content of the starting solution in contact with the gaseous medium is smaller than the heat content of the gaseous medium; the duration of contact is such that most of the evaporation of solution takes place under conditions of constant enthalpy; and the vapor pressure of the gaseous medium is less than the vapor pressure of the liquid/gas interface of the end solution including the step of spraying the starting solution supplied by delivering devices using a pump through spray heads, each spray head includes a member having a plurality of holes the radii of which are not less than 0.025 mm and the distance between them is at least 0.3 mm for producing a shower of starting solution droplets of substantially constant radius substantially independent of spray head operating pressure. An apparatus for evaporating a starting solution is also provided.