Ammonia decomposition for hydrogen production is a process in which liquid ammonia is decomposed at high temperatures to produce hydrogen and nitrogen gases. The basic principle is to decompose liquid ammonia into hydrogen and nitrogen under high temperature and pressure conditions, with the chemical equation: 2NH ∝=3H ₂+N ₂. This reaction is an endothermic reaction and usually needs to be carried out under high temperature and high pressure conditions. ‌

Process flow of ammonia decomposition for hydrogen production

Raw material preparation: Liquid ammonia is placed in a high-pressure container.

Heating decomposition: Liquid ammonia is heated to 400-500 ℃ and then decomposed into hydrogen and nitrogen under the action of nickel based catalysts.

Gas purification: The generated gas is purified by molecular sieve adsorption to remove residual ammonia and obtain pure nitrogen hydrogen mixed gas. ‌

Application areas of ammonia decomposition for hydrogen production

Industrial application: Used as a protective gas in the production of black, colored, and mechanical plates, strips, and wires.

Chemical industry: used as a reducing gas for tin bath protection in float glass production, and as a protective gas for bright annealing of pipes and standard parts. ‌

Other applications: Used for sintering of powder metallurgy, tungsten molybdenum materials, hard alloys, electronic materials, etc.

Advantages of ammonia decomposition for hydrogen production

Efficient: The ammonia decomposition hydrogen production device can achieve a decomposition rate of 99.9% under suitable temperature and pressure.

Environmental Protection: This process does not generate negative reactions, only requires the removal of water and residual ammonia.