PRINCIPLE OF OPERATION
Ammonia Cracker gas generator produces mixture of Hydrogen and Nitrogen
which is commonly used in Heat treatment furnaces. Ammonia gas from
cylinders is passed over a bed of Nickel Catalyst at 850 degree celcius
temperatures and cracking takes place into its basic constituents i.e. 75%
H2 & 25% N2. Ammonia cracking reaction is Endothermic and hence it
requires heat from outside source. The source is electrically heated type
furnace (Rectangular shape) and a Retort made of heat resistant provided
inside to hold the catalyst.
Process
The ammonia cracking reaction is endothermic and takes place at
approximately at 850 degree celcius temperatures. The heat of reaction is
supplied by providing electrical heating elements in the heating chamber.
The furnace has temperature controller for automatic temperature control,
which controls the reaction temperature.
The cracked ammonia gas coming out from the bottom of the retort at around
850 degree celcius is then passed through the heat inter-changer to pre-heat
the un-cracked ammonia feed. Here the cracked gases gets cooled to around
400 degree celcius. For further cooling these gases now passes through a
water cooler to bring them to around 40 degree celcius.
Features
- Fully automatic, skid mounted units.
- Rectangular furnace has hinged type door for easy inspection and
maintenance.
- Power consumption is low as 0.5 KW per NM3 of gas generated.
- Skin temperature as low as 35 degree celcius above ambient.
- High turn down ratio.
- Very safe and proven design, No operator is required.
