Technology Unit

: Second Distillation Column
: Generic Ethylbenzene Dehydrogenation Process
Short Name: 2nd Dist. Column
Description: The Styrene-rich Bottom Stream from Distillation Column No. 1 is sent to the Distillation Column No. 2 (Styrene Column) to carry out the final Purification step. At the Styrene Column, the Styrene is obtained at the Bottom stream with a purity of about 99.5 % while the Stream obtained at the top of this Column (composed mostly by Ethylbenzene, Benzene and Toluene) is recycled back to the Process (Recycle Stream) and mixed in the Streams Mixer with the pure Ethylbenzene Stream which had previously been pre-heated at the first shell and tube Heat Exchanger.
Link: https://www.redalyc.org/journal/2570/257054721002/html/