发明授权
US4599178A Recovery of glycerine from saline waters 失效
从盐水中回收甘油

Recovery of glycerine from saline waters
摘要:
A process for recovery of glycerine from saline waters-containing glycerine comprises evaporating the water to precipitate a major amount of any salts present, separating the liquid phase and diluting it with water to low viscosity, electrodialysing the diluted liquid phase to obtain, (1) a concentrate stream which is recycled to the evaporative step, and (2) a diluate stream which is subjected to fractionation distillation to obtain glycerine as an overhead fraction.
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