| abstract |
【wrap up】 A method for producing p-xylene, which is a step of converting C9 + aromatic hydrocarbons and hydrogen gas in the presence of a dealkylation catalyst to produce a dealkylated effluent and dealkylation. Steps to separate the effluent to produce carbon 9 (C9) aromatic, xylene, and toluene streams, and generate p-xylene products and p-xylene depleted streams from the xylene stream within the p-xylene separation unit. And the step of converting m-xylene and o-xylene in the p-xylene depletion stream in the isomerization unit to produce an isomerized effluent, and the transalkylation catalyst in the transalkylation reactor. The step of reacting a C9 aromatic stream and a hydrogen stream in the presence to produce a transalkylated effluent and separating the C6-C9 + aromatic hydrocarbons in the isomerized effluent and the transalkylated effluent in a splitter column. Then, the steps of producing benzene recycling, toluene recycling, xylene recycling, and C9 + recycling are included. |