... in the deep drying of cracked gas, ethylene and propylene, hydrogen-generation, air seperation, instrument air drying and fluorine treatment for ... as H2S, SO2, HF and paraffin in the waste gas, especially in the drinking water defluorination..Physical propertiesPerformance/TypeKA401KA402KA403KA404KA405KA406AppearanceWhite, ... catalyst carrierKA405: is for dehydrating and drying in air seperation etc.