logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12486463 B1

PDFFull Text
Date of Patent:
Dec. 02, 2025

Filed:

Nov. 28, 2022

Separation method of high-temperature fischer-tropsch synthetic light oil

Applicant:

Yankuang Energy R&d Co., Ltd., Shanghai, CN;

Inventors:

Qiwen Sun, Shanghai, CN;

Zhengwei Yang, Shanghai, CN;

Jisen Liu, Shanghai, CN;

Gerui Cui, Shanghai, CN;

Chen Shen, Shanghai, CN;

Wei Jin, Shanghai, CN;

Zongsen Zhang, Shanghai, CN;

Assignee:

Yankuang Energy R&D Co., Ltd., Shanghai, CN;

Attorney:

Woodard, Emhardt, Henry, Reeves & Wagner, LLP

Primary Examiner:

Randy Boyer

Assistant Examiner:

Juan C Valencia

Int. Cl.
CPC ...
C10G 53/04 (2006.01);
U.S. Cl.
CPC ...
C10G 53/04 (2013.01); C10G 2300/1081 (2013.01); C10G 2300/1088 (2013.01); C10G 2300/1096 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/805 (2013.01); C10G 2400/30 (2013.01);
Abstract

The application provides a method for simultaneously removing oxygen-containing compounds and aromatics from high-temperature Fischer-Tropsch synthetic light oil, comprising: subjecting the light oil and a composite extractant to a countercurrent single-stage or multi-stage extraction process in an extraction equipment, to obtain a raffinate phase stream, and an extract phase stream of oxygen-containing compounds+aromatics; washing the raffinate phase stream with water, to obtain a raffinate oil stream, from which oxygen-containing compounds and aromatics have been removed, and a water stream containing a small amount of extractants; and subjecting the extract phase stream to an extractive distillation process, to obtain a recycled stream rich in alkanes and olefins and a recycled solvent-rich stream, and carrying out a regeneration cycle on the solvent-rich stream through a solvent recovery tower and a regeneration distillation tower. Oxygen-containing compounds, and aromatics in the light oil are removed together.

Find Patent Forward Citations

Sun, Qiwen. (2025). Separation method of high-temperature fischer-tropsch synthetic light oil (U.S. Patent No. 12486463). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12486463

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…