Patent ID: 6221132
Filing Date: 2001-04-24
Classification: B01D,B01J,C01B,Y10S

Abstract:
A method of removing water from gaseous hydrogen halide, selected from the group consisting of HCl, HF, HBr, Hl and mixtures thereof, wherein the water contained in said hydrogen halide is between 1 to 500 ppm by volume, by passing a hydrogen halide stream containing water over an adsorbent comprising between 5 to 35% by weight magnesium halide, wherein the halide is the halide of the gaseous hydrogen halide, supported on an activated carbon substrate prepared by the steps comprising:subjecting an activated carbon substrate to vacuum conditions;depositing from 5 to 35% by weight magnesium halide on said activated carbon substrate under said vacuum conditions to create said adsorbent;drying said magnesium halide supported on activated carbon; andactivating said adsorbent by heating to a temperature of from 270.degree. C. (518.degree. F.) to 400.degree. C. (752.degree. F.).