Patent ID: 7276636

Claim:
A process for producing styrene comprising: a) reacting benzene and a polyethylbenzene in a transalkylation reactor to form ethylbenzene; b) dehydrogenating ethylbenzene in a dehydrogenation reactor to form styrene; c) withdrawing a dehydrogenation reactor effluent comprising styrene from the dehydrogenation reactor, and passing at least a portion of the dehydrogenation reactor effluent to a dehydrogenation separation section; d) recovering styrene from the dehydrogenation separation section; e) introducing a first inhibitor element component to the dehydrogenation separation section; f) recovering from the dehydrogenation separation section a recycle stream comprising a second inhibitor element component; and g) passing at least 33% of the second inhibitor element component recovered in f) to the transalkylation reactor.