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.:
Date of Patent:
Feb. 23, 2010
Filed:
Aug. 10, 2007
Kuang-yeu Wu, Plano, TX (US);
Tsung-min Chiu, Jhonghe, TW;
Tzong-bin Lin, Chiayi, TW;
Hung-chung Shen, Chiayi, TW;
Yu-ming Wu, Guanmiao Township, TW;
Tung-hsiung Kuo, Tainan, TW;
Kuang-Yeu Wu, Plano, TX (US);
Tsung-Min Chiu, Jhonghe, TW;
Tzong-Bin Lin, Chiayi, TW;
Hung-Chung Shen, Chiayi, TW;
Yu-Ming Wu, Guanmiao Township, TW;
Tung-Hsiung Kuo, Tainan, TW;
AMT International, Inc., Plano, TX (US);
CPC Corporation, Taipei, TW;
Abstract
A process for recovering polar hydrocarbons from non-polar hydrocarbons, such as aromatics from non-aromatics, naphthenes from paraffins and isoparaffins, or olefins from paraffins and isoparaffins, in feed mixtures containing at least a measurable amount of heavier hydrocarbons. This improved extractive distillation (ED) process recovers aromatic hydrocarbons including benzene, toluene, and xylenes from the C6-C8 petroleum streams containing a measurable amount of C9+ hydrocarbons. The ED process also recovers benzene and toluene from the C6-C7 petroleum streams containing a measurable amount of C8+ hydrocarbons. The ED solvent utilized to recover and purify the aromatic hydrocarbons from the petroleum stream with a heavier than intended feedstock of hydrocarbons is also regenerated and recovered.