Patent ID: 8841499

Claim:
A method for isomerization of paraffins, the method comprising the steps of: compressing a C 4 − hydrocarbons-containing stabilizer vapor stream from a stabilizer overhead receiver of a C 5 /C 6 isomerization section to form a compressed C 4 − hydrocarbons-containing stabilizer stream; contacting, in a C 4 isomerization section, a C 4 hydrocarbons-containing feed stream that comprises unbranched C 4 hydrocarbons with a chloride-promoted isomerization catalyst in the presence of hydrogen to form a branched C 4 hydrocarbons-containing reaction zone effluent; combining at least a portion of the compressed C 4 − hydrocarbons-containing stabilizer stream with the branched C 4 hydrocarbons-containing reaction zone effluent to form a C 4 hydrocarbons-containing combined stream; and separating the C 4 hydrocarbons-containing combined stream into a C 3 − hydrocarbons-containing stabilizer vapor stream and a C 4 hydrocarbons-rich product stream that comprises branched C 4 hydrocarbons wherein, prior to the step of compressing, the C 4 − hydrocarbons-containing stabilizer vapor stream is demisted to remove mist droplets and/or deposits from the C 4 − hydrocarbons-containing stabilizer vapor stream.