Cracking of ammonia is one of the most
economical way for on-site generation of hydrogen gas for industrial
purposes. For this process, the temperature of 850 degree C is
maintained in the electrically heated furnace.
cast retort is installed in the center of this furnace. This furnace
is filled with nickel catalyst. At this stage, the ammonia cracking
takes place in presence of nickel catalyst. The process separates
its vital element into 75 % hydrogen and 25% nitrogen gas at dew
point of (-)30 degree C.
In fact, nitrogen gas is
generally inert. This mixture is treated as pure hydrogen gas. This
becomes the most economical, trusted, tried and dependable source of
on-site hydrogen generation for many small and large industries. A
molecular sieve purifier is used after ammonia cracking unit for
reducing residual ammonia content and to get very dry gas. This
reduces ammonia down to 1-ppm level and dries gas up to (-) 80°C