Question

How are gases liquefied ?

• A. decantation
• B. liquifation
• C. sedimentation
• D. all of these

Answer 1

Answer: (B)

liquifation

There are basically two processes for liquefying natural gas in large quantities. One is a cascade process in which natural gas is cooled by another gas which in turn has been cooled by another gas hence a cascade. It forms a liquid natural gas cycle. Another process extracts gas and transports to the processing plant where it is purified by removing condensates such as water, oil, mud.