PURPOSE: To efficiently produce high purity gaseous HCl by passing crude gaseous HCl through a tower packed with solid activated carbon of a specified diameter at a specified superficial velocity under the conditions of a specified temp. and a specified pressure.
CONSTITUTION: Crude gaseous HCl contg. 1-3C chlorohydrocarbons is passed through a tower packed with solid activated carbon of 1-10mm average diameter at 100-2,000hr-1 superficial velocity under the conditions of 0-100°C and 0-5kg/cm2 G pressure to produce high purity gaseous HCl. The activated carbon with the adsorbed 1-3C chlorohydrocarbons is heated to 100-300°C and high purity gaseous HCl is passed through the tower to desorb the chlorohydrocarbons. The adsorbing ability of the activated carbon packed tower is restored.
TAKAGI TAKEHIKO
KAWAKAMI HARUHIKO
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