- Patent Title: Process for producing para-xylene using two feed raffinate column
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Application No.: US16265911Application Date: 2019-02-01
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Publication No.: US10703691B1Publication Date: 2020-07-07
- Inventor: Anton Mlinar , Nikunj Patel , Jason L. Noe
- Applicant: UOP LLC
- Applicant Address: US IL Des Plaines
- Assignee: UOP LLC
- Current Assignee: UOP LLC
- Current Assignee Address: US IL Des Plaines
- Main IPC: C07C7/12
- IPC: C07C7/12 ; C07C5/22 ; B01D15/18 ; C07C7/04 ; B01D3/00 ; C07C15/08

Abstract:
Process for producing para-xylene are described. The processes utilize a dual raffinate approach. Two raffinate streams from the adsorption separation unit are fed to the raffinate distillation column independently to take advantage of the differing desorbent concentrations in the two raffinate streams. The process yields significant reboiler duty savings and a reduction in overall fired fuel needed.
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