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:
Apr. 23, 2013
Filed:
Apr. 24, 2010
Applicants:
Tzong-bin Lin, Chiayi, TW;
Hung-chung Shen, Chiayi, TW;
Kuang-yeu Wu, Plano, TX (US);
Inventors:
Assignees:
AMT International Inc., Plano, TX (US);
CPC Corporation, Taiwan, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A highly effective liquid-liquid extraction process to remove nitrogen compounds and especially basic nitrogen compounds from aromatic light petroleum oils with excellent recovery employs de-ionized water, which can be acidified, as the extractive solvent. The product is an aromatic hydrocarbon with ultra-low amounts of nitrogen poisons that can deactivate acidic catalysts. The extracted oils are suitable feedstock for the subsequent catalytic processes that are promoted with the high performance solid catalysts, which are extremely sensitive to nitrogen poison.