What is hydrogen production from ammonia decomposition?
2021.01.07
Hydrogen production by ammonia decomposition 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 mixed gas containing 75% H₂ and 25% N₂.
Using liquid ammonia as raw material, hydrogen production via ammonia decomposition vaporizes ammonia first, then heats it 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. After passing through a heat exchanger, cooler and molecular sieve adsorption purifier, the gas is ready for use. Its advantages include easy availability and low cost of raw material ammonia, low consumption, as well as low investment, compact size and high efficiency for producing shielding gas by ammonia cracking.
Since hydrogen (compressed) and ammonia (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, hydrogen production by ammonia decomposition carries relatively high safety risks. It is necessary to strengthen the analysis of hazardous and harmful factors and accident prevention and control to eliminate all kinds of accidents.
Major hazards in hydrogen production by ammonia decomposition 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 hydrogen via ammonia decomposition.
The above information is compiled and released by Suzhou Jiarui Gas, a supplier of special adsorbents for hydrogen production.
Suzhou Jiarui Gas System Co., Ltd. is a high-tech enterprise specializing in the research and development of gas separation and purification technologies. The company is equipped with a R&D building and a gas separation equipment assembly workshop. It provides customers with services including PSA hydrogen, nitrogen and oxygen production, as well as carbon dioxide purification and removal. We look forward to win-win cooperation with you.