Ammonia Cracking Hydrogen generators are Catalytic cracking units in which Ammonia (NH3) is disassociated to Hydrogen and Nitrogen.
2NH3 = 3H2 + N2
Refrigeration grade Ammonia is from cylinders or tanks is used as feed. The product gas has 75% Hydrogen and 25% Nitrogen. This gas is further purified in a Molecular Sieves unit by removing un-cracked Ammonia and moisture.