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Ammonia Gas Cracking Unit

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  • Ammonia Gas Cracking Unit
Ammonia Gas Cracking Unit

Ammonia Gas Cracking Unit

Rs 15,000  / OnwardsGet Best Price
Automation GradeAutomatic
Capacity3 Nm3/hr to 300 Nm3/hr
Voltage230 V
Dew Point(-) 80 degree C
Operating Pressure0.5 Kg/cm2 g
UsageIndustrial
Principle of operations:
  • 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 Celsius 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 of operations:
  • Ammonia gas is supplied from the battery of cylinders at the battery limit of the unit. The liquid ammonia cylinders are kept vertically in a water trench and vapor ammonia gas from the top of the cylinders is supplied to the unit. The vapor Ammonia Pressure is reduced to the required 0.5 kg/cm2 g by pressure regulator. It is then passed through the heat interchanger where ammonia vapor gets per-heated up and then enters the catalyst tube (i.e. Retort) from top. In retort, it comes in contact with catalyst and gets cracked at high temperature.
  • The ammonia cracking reaction is endothermic and takes place at approximately at 850 degree Celsius 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 Celsius is then passed through the heat inter-changer to per-heat the UN-cracked ammonia feed. Here the cracked gases gets cooled to around 400 degree Celsius. For further cooling these gases now passes through a water cooler to bring them to around 40 degree Celsius.
  • In the cracked ammonia outlet line a Rota meter is provided to indicate continuous flow. This Ammonia Cracker can be operated at any capacity from 10 to 100 % rating simply by throttling ammonia feed line valve. Whenever ammonia is not in use, nothing need to be done except closing the feed valve. The temperature of the ammonia cracking furnace is automatically controlled by the temperature controllers. The ammonia cracking plant can be kept in hot condition for days and days. Whenever you wish to restart cracking process, it can be done instantaneously. Whenever plant is to be shut-down for long time, the ammonia cracking furnace can also be shut-down. It takes around 8-hours for Ammonia Cracking Furnace for heat up to reach operating temperature of 850 degree Celsius.

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