Ammonia Cracking Hydrogen Plant

Gaseous ammonia in ammonia cylinders or tanks is depressurized by an ammonia pressure reducing valve. After depressurization, the gaseous ammonia passes through a heat exchanger and exchanges heat with the decomposition gas before being sent to the decomposition furnace (which contains activated nickel catalyst). At 800°C, the ammonia is decomposed into a hydrogen-nitrogen mixture. The high-temperature hydrogen-nitrogen mixture then re-enters the heat exchanger to exchange heat with the gaseous ammonia, cooling the decomposition gas while the gaseous ammonia recovers heat and heats up. After heat exchange, the decomposition gas enters a cooler for further cooling before being sent to the point of use.