Ammonia decomposition for hydrogen production is a chemical reaction， which means that liquid ammonia is heated to 800 ~ 850 ℃， and ammonia is decomposed under the action of nickel based catalyst to obtain hydrogen nitrogen mixed gas containing 75%h2 and 25%n2.

The gas produced by this method is a good protective gas， which can be widely used in semiconductor industry， metallurgical industry， and other industries and scientific research that need protective atmosphere. It is composed of the vaporizer， electric heating element， ammonia pressure reducing valve and other main components，