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Ammonia decomposition for hydrogen production is a chemical reaction. Liquid ammonia is heated to 800–850°C and decomposed under the action of a nickel-based catalyst to produce a hydrogen-nitrogen mixture containing 75% H₂ and 25% N₂.
Using liquid ammonia as raw material, it is vaporized and heated to a certain temperature in an ammonia decomposition furnace (cracking furnace). Under the action of a catalyst, ammonia decomposes into a mixed gas of 75% hydrogen and 25% nitrogen. The gas passes through a heat exchanger, a cooler, and is then purified by a molecular sieve adsorption purifier before use. Its advantages include easy availability and low cost of raw material ammonia, low consumption, low investment, compact size and high efficiency for producing shielding gas via ammonia cracking.
Since hydrogen and liquid ammonia involved in the production process are flammable and explosive, and ammonia is a toxic gas, while the process operates under high temperature and pressure, ammonia decomposition for hydrogen production involves relatively high safety risks. It is necessary to strengthen the analysis of hazardous and harmful factors and accident prevention to eliminate all kinds of accidents.
The main hazards in ammonia decomposition for hydrogen production include fire, explosion, poisoning and suffocation, scalding, etc., which may easily cause group injury accidents. Through three major measures: safety technology, safety management and safety training, accident risks can be effectively controlled to ensure safe production of ammonia decomposition for hydrogen production.
The above is the knowledge about ammonia decomposition for hydrogen production compiled and released by Suzhou Jiarui Gas System Co., Ltd. We hope it will be helpful to you.
