The main material of the ammonia decomposition inner shell is 310S high-temperature stainless steel heat-resistant steel, and the ammonia inlet pipe is made of INCOENL600 material. The furnace chamber is equipped with Z204 nickel catalyst, and the normal service life of the furnace chamber is greater than 5 years. Ammonia decomposition hydrogen production internal furnace chamber is the core component for decomposing hydrogen nitrogen mixture gas