×

Process for LPG recovery

  • US 4,507,133 A
  • Filed: 09/29/1983
  • Issued: 03/26/1985
  • Est. Priority Date: 09/29/1983
  • Status: Expired
First Claim
Patent Images

1. In a process for separating propane and heavier hydrocarbons from a gaseous feedstream containing hydrocarbon components of different boiling points wherein said feedstream is cooled and separated into a first vapor fraction and a first liquid fraction and said first liquid fraction is distilled in a deethanizer to form a second vapor fraction and a second liquid fraction, the improvement which comprises expanding and transferring said first vapor fraction to the lower portion of a direct heat exchanger, cooling said second vapor fraction to form a substantially liquefied stream, transferring at least a portion of said liquefied stream to the upper portion of said direct heat exchanger whereby said liquefied stream contacts said first vapor fraction to form a third vapor fraction and a third liquid fraction, returning said third liquid fraction to said deethanizer, and removing said third vapor fraction from said direct heat exchanger.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×