Membrane dryers for high purity hydrogen production
Various analytical instrumentation in laboratory demand the use of high purity hydrogen. Conventional procedures for hydrogen production employ the electrolysis of deionised water. However, the hydrogen stream produced is saturated with water and requires to be dried. Existing drying technologies adapt silica gel desiccant and nafion tubing. Such technologies proved to be troublesome for their sustenance. Membrane technology can be suggested as an alternative to overcome the existing limitations.
The aim of the project is to design and develop a membrane dryer that can perform an efficient separation. Initial studies carried out with cellulose acetate (CA) membranes for the dehydration of hydrogen gas proved promising. Various design aspects to be evaluated include the design of cellulose acetate membranes and gas permeators.