The utility model discloses a filter high
viscosity phosphite's
intermediate storage tank, including tank body, the tank body is equipped with feed inlet, gas inlet, vacuum interface,
discharge gate and vent, and is controlled by valve independently respectively, stirring
paddle is located in the tank body, wherein, gas inlet is used for to the tank body in dry
hydrogen chloride gas, to make
potassium carbonate convert into
potassium chloride and separate out, vacuum interface is used for to
discharge the
carbon dioxide and
water gas of reaction generation. Since in liquid phosphite, the
solubility of
potassium chloride reduces along with temperature heightening, based on this characteristic, first dry
hydrogen chloride gas is passed into the high temperature (>100 DEG C) liquid phosphite containing
potassium carbonate catalyst, makes
potassium carbonate convert into potassium chloride, because the
solubility of potassium chloride reduces under high temperature, will separate out from liquid material, and high temperature can also reduce the
viscosity of high
viscosity liquid phosphite, double effect realizes the effect of fast filter speed, catalyst removal thoroughly together.