AMMONIA PLANT

Ammonia Plant-Process Description

The Natural Gas containing hydrocarbons is reacted with steam to produce Carbon dioxide, Carbon monoxide and Hydrogen. Air is injected in to the system to provide source of Nitrogen for Ammonia Synthesis. The Carbon monoxide produced by reaction of hydrocarbons with steam is converted to Carbon dioxide, which is removed and recovered by absorption in Potassium carbonate solution. The Ammonia is produced by reaction of Hydrogen and Nitrogen.

To achieve zero effluent from the plant, the following inbuilt facilities have been provided:

 Process condensate stripper to strip off dissolved gases from process condensate with steam. After stripping the condensate is sent to DM plant for further treatment to convert it to the De-mineralized Water.

 Turbine condensate is sent to DM plant for polishing and used as boiler feed water.

 Boiler blow down is used as cooling tower make up

The Process Steps are:

Primary & Secondary Reforming: In Primary Reformer, feed Natural Gas reacts with Steam. Air is injected in Secondary Reformer to provide source of Nitrogen for Ammonia synthesis. CO Shift Conversion: Carbon monoxide produced is converted to Carbon dioxide by reaction with steam. CO2 Removal: Carbon dioxide removed and recovered by absorption in GV solution. Methanation Ammonia Synthesis and Ammonia Separation Purge Gas Recovery

Ammonia Plant -Process Flow Diagram

Aammonia Plant-Process Flow Diagram  ENLARGE