Patent ID: 9663421
Date: 2017-05-30
CPC Classifications: C07C

Claim:
1. A method comprising: reacting a stream comprising one or more C3 to C10 alkanes and less than 2% ethane and 1% methane with bromine in a bromination reactor to form a bromination reactor discharge stream comprising alkylbromides and HBr; separating the discharge stream into an alkyibromide stream and a first HBr stream in a monobromoalkyl recovery system; sending the alkylbromide stream to a coupling reactor to form a coupling reactor effluent comprising alkylbromides having between 5 and about 1000 carbon atoms, olefins having between 5 and about 1000 carbon atoms and HBr; separating the coupling reactor effluent into a second HBr stream, a heavy alkylbromide stream, a light alkylbromide stream, a heavy olefin stream, and a light olefin stream, wherein the heavy alkylbromide stream and heavy olefin stream comprise heavy alkylbromides having at least 8 carbon atoms heavy olefins having at least 8 carbon atoms and the light alkylbromide stream and light olefin stream comprise light alkylbromides having less than 8 carbon atoms and light olefins having less than 8 carbon atoms; recycling the light olefins to the bromination reactor; recycling the light alkylbromides to the coupling reactor; and hydrogenating the heavy alkylbromides and heavy olefins to form C8+ alkanes and HBr.