Separation of natural gas components such as methane, ethane, propane and butane can represent added value over regular pipeline gas. Cryogenic processes are the most economical solution to extract these fractions from a natural gas mixture.
Condensate is the C5+ fraction and, as such, is the heaviest fraction of a natural gas mixture. Among other things it can be used as gasoline or steam cracker feedstock. Furthermore removing the condensate fraction of the natural gas mixture is often required to meet the dew point specifications of the pipeline gas.
LPG (Liquefied Petroleum Gas) is widely used as alternative fuel for cars, but is also valued as a chemical feedstock. LPG consists of propane and butane (C3/C4).
For the recovery of LPG/C3+ Linde Engineering offers an advanced expander process which allows for recovery rates as high as 99.9 %, while minimizing specific energy consumption. Linde's advanced expander process allows for a higher CO2 content of the feed gas than the conventional expander processes.
C3+ Recovery Plant
Feed gas capacity 1,100,000 Nm³/h