PROCESSES AND APPARATUSES FOR ISOMERIZING HYDROCARBONS

摘要

Processes and apparatuses for isomerizing hydrocarbons are provided. In an embodiment, a process for isomerizing hydrocarbons includes providing a first hydrocarbon feed that includes hydrocarbons having from 5 to 7 carbon atoms. The first hydrocarbon feed is fractionated to produce a first separated stream that includes hydrocarbons having from 5 to 6 carbon atoms and a second separated stream that includes hydrocarbons having 7 carbon atoms. The first separated stream is isomerized in the presence of a first isomerization catalyst and hydrogen under first isomerization conditions to produce a first isomerized stream. The second separated stream is isomerized in the presence of a second isomerization catalyst and hydrogen under second isomerization conditions that are different from the first isomerization conditions to produce a second isomerized stream. The first isomerization catalyst is the same type of isomerization catalyst as the second isomerization catalyst.

主权项

1. A process for isomerizing hydrocarbons, wherein the process comprises:
providing a first hydrocarbon feed comprising hydrocarbons having from 5 to 7 carbon atoms; fractionating the first hydrocarbon feed to produce a first separated stream comprising hydrocarbons having from 5 to 6 carbon atoms and a second separated stream comprising hydrocarbons having 7 carbon atoms; isomerizing the first separated stream in the presence of a first isomerization catalyst and hydrogen under first isomerization conditions to produce a first isomerized stream; isomerizing the second separated stream in the presence of a second isomerization catalyst and hydrogen under second isomerization conditions different from the first isomerization conditions to produce a second isomerized stream, wherein the first isomerization catalyst is the same type of isomerization catalyst as the second isomerization catalyst; and stabilizing the first isomerized stream and the second isomerized stream together to produce a light stream comprising hydrocarbons having less than or equal to 4 carbon atoms and a stabilized stream comprising branched hydrocarbons.