Desiccant Chemical Adsorption
- May 28, 2018 -


1, acidic desiccant: concentrated sulfuric acid, phosphorus pentoxide, used to dry acidic or neutral gas, concentrated sulfuric acid can not dry hydrogen sulfide, hydrogen bromide, hydrogen iodide strong reducing acid gas; phosphorus pentoxide Can not dry ammonia


2, Neutral desiccant: Anhydrous calcium chloride, the general gas can be dry, but anhydrous calcium chloride can not dry ammonia and ethanol;


3, alkaline desiccant: soda lime (CaO and NaOH, KOH mixture), quicklime (CaO), NaOH solids, used to dry neutral or alkaline gases.