Invention Application
- Patent Title: MULTISTAGE SOLVENT EXTRACTION PROCESS AND APPARATUS
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Application No.: US17561393Application Date: 2021-12-23
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Publication No.: US20220204871A1Publication Date: 2022-06-30
- Inventor: Mark Van Wees , James McGehee , Lorenz J. Bauer
- 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: C10G53/06
- IPC: C10G53/06 ; C10G21/28 ; C10G21/00 ; C10G21/14 ; C10G31/08

Abstract:
Process and apparatus for two-stage solvent extraction of hydrocarbon products is disclosed. The process comprises passing a heavy hydrocarbon feed stream and a first fresh solvent to a first extraction column to generate a first overhead stream and a first bottom stream. The first overhead stream is passed to a first stripping column to generate a first product stream and a first stripped solvent stream. The first bottom stream is passed to a second extraction column to generate a second overhead stream and a second bottom stream. A second fresh solvent stream is passed to a second extraction column. The second overhead stream is passed to a second stripping column to generate a second product stream and a second stripped solvent stream. Passing the first stripped solvent stream and the second stripped solvent stream to a solvent recovery column and passing the second bottom stream to a pitch stripper.
Information query
IPC分类: