Method of treatment of filter cake from filtration of polymer polyols

摘要

There is described a method of treatment of filter cake from manufacturing of polyetherpolyol by which filter material - expanded SiO2 and filter diatomaceous earth contaminated by alkali salt and polyetherpolyol is in the presence of water exposed to temperature from 80 to 85 °C and consequently is solute alkali salt, filter diatomaceous earth and expanded silicon dioxide saturates to aqueous phase by formation surface polyetherpolyol layer.