Title: Two stage rectification for the separation of hydrocarbons
Application Number: 85103384 Application Date: 1985.05.15
Publication Number: 1006093 Publication Date: 1986.12.24
Approval Pub. Date: Granted Pub. Date: 1989.09.27
International Classifi-cation: B01D3/14,C10G7/00
Applicant(s) Name: Linde Aktiengesellschaft Address:
Inventor(s) Name:
Attorney & Agent: LUO HONG LIU YUANJIN
Abstract:
     To separate C2 or C3 hydrocarbons from hydrocarbon-containing gaseous mixtures by fractional condensation and rectification, the rectification is conducted in two columns, the second column being at a pressure at least 5 bar lower than the first. One of the condensates is subcooled before being passed, for purposes of peak cooling, to the upper zone of the high pressure column, substantial energy savings are realized.
Time: 5