For nearly all polymer applications nitrogen is used as purge gas stream or for drying purposes. Consequently the nitrogen is mixed with hydrocarbons and cannot be re-used. Our membrane process solutions known as
BORSIG Ethylene Recovery Unit
BORSIG Propylene Recovery Unit
BORSIG Hydrocarbon Recovery Unit
are also designed for nitrogen recovery and enable high recovery rates and nitrogen purity, suitable for re-use. Depending on the particular application and inlet gas specification it is focussed either on the hydrocarbon recovery or nitrogen recovery.