step 1
nitrogen and hydrogen are combined and cleaned in the mixer
step 2
the gases are compressed at 200atm
step 3
the gases are heated at 450 degrees celcius and passed over finely divided iron catalysts where they form ammonia
step 4
the ammonia is condensed into liquid ammonia
step 5
the nitrogen and hydrogen are recycled back to the start
sources of the raw materials used in the contact process
nitrogen is obtained through fractional distillation of liquid air
hydrogen is obtained through the reaction of methane and steam