Non-aromatic compound removal systems for para-xylene production

A non-aromatic compound removal system, comprising:

• a xylene splitter configured to receive a reformate stock stream and produce a mixed xylene stream;
• a para-xylene recovery unit in direct fluid communication with the xylene splitter and configured to receive the mixed xylene stream from the xylene splitter and produce a para-xylene lean stream;
• a deheptanizer unit in fluid communication with the para-xylene recovery unit and configured to produce a hydrocarbon stream;
• and
• a membrane unit configured to receive one or more streams of the para-xylene lean stream and the hydrocarbon stream and produce a non-aromatics rich stream, wherein the membrane unit presents a xylene permeance of 60 gm/m2/hr/psi and a xylene to non-aromatic permeance ratio of 15.

A method for removing non-aromatic compounds from a para-xylene production process, comprising:

• feeding a reformate stock stream into a xylene splitter, the xylene splitter producing a mixed xylene stream, the mixed xylene stream comprising para-xylene, ortho-xylene, and meta-xylene;
• feeding the mixed xylene stream through a membrane unit, the membrane unit producing a non-aromatics rich stream and a membrane unit product stream;
• processing the membrane unit product stream in a para-xylene recovery unit, the para-xylene recovery unit producing a para-xylene lean stream;
• processing the para-xylene lean stream in an isomerization unit, the isomerization unit producing an isomerization unit product stream;
• feeding the isomerization unit product stream into a deheptanizer unit, the deheptanizer unit producing a xylene rich stream;
• processing the xylene rich stream through a clay treater, the clay treater producing a clay treated stream;
• and
• feeding the clay treated stream into the xylene splitter.