The catalytic process occurs at lower temperatures and offers higher selectivity but requires frequent regeneration of the catalyst. The products are then cooled and introduced into a pair of separators that separate the unreacted hydrogen. Portion of the unreacted hydrogen is compressed and recycle back to the feed and the reactor. The products leaving the separators are then heated before being introduced into a distillation column, where toluene is separated from the stream and recycle to the feed. This allow for greater conversion. Then further fractionation separates methane and toluene from the benzene product. The heating requirements are achieved with low, high and medium pressure steam. The cooling requirements are achieve by cooling water at temperature of 30 C and pressure of 1 bar.