TH86223B - Hydrocarbon gas process - Google Patents

Abstract

Processes for recovery of ethane, ethylene, propane, propylene and its fraction Heavier hydrocarbon compositions from hydrocarbon gas streams were revealed. The stream cools and After that it is expanded until the distillation tower pressure is obtained and delivered to the fractional distillation tower at the Enter in the middle of the lower column. The distillation stream is taken out from the column below the current feed point and It was subsequently brought into a cold relationship with the distillation stream and condensed at least some of the current. Condensation forms at least one part of the condensate leading to the sequential distillation tower. The portion that is entered in the middle of the top column. The recycling stream is brought out from the top of the tower after Warm and pressurized recycle stream, sufficiently cooled pressurized recycling stream to condense. Some recycling flows, and then expand until the fractional distillation tower pressure is reached and delivered to the tower. At the location, enter the top column. The volume and temperature of the feed to the fractional distillation tower were effective in maintaining the upper temperature. Want to be brought back

Claims (1)

1. In the process for gas separation, which contains methane, C2 component, C3 component, and heavier hydrocarbon component to decompose, volatile gas reside and digester. Relatively less volatile, where the main component C2, C3 component, and component Hydrocarbons are heavier. Or the C3 component and the heavier hydrocarbon component, by process (a) the gas stream is cooled under pressure to provide a cold stream; (b) The cold current expands until the pressure is reduced by the subsequent cold stream; and