This is a catalytic exothermic reaction, and the temperature is controlled by injecting hydrogen into the reactor. Hydrogen is injected at 40.4 kmol/hr 44.96oC and 25.5 bar. The exiting stream exits at 24.81 bar and 671oC, it contains methane, benzene, toluene, and hydrogen. The one pass conversion is typically around 75%. The process then continues to the separator feed preparation phase. This process phase begins with introducing the stream into a cooling water heat exchanger E-2. This heat exchanger cools the product stream to 38oC, which condenses most of the toluene and benzene in the stream.