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. 14, 2020
Filed:
Feb. 10, 2017
Cnooc Tianjin Chemical Research & Design Institute Co. Ltd, Tianjin, CN;
China National Offshore Oil Corp., Beijing, CN;
Cnooc Energy Technology & Services Limited, Beijing, CN;
Haibin Yu, Tianjin, CN;
Jiazhong Zang, Tianjin, CN;
Bin Li, Tianjin, CN;
Jingxin Fan, Tianjin, CN;
Chang Shu, Tianjin, CN;
Zhiyu Sui, Tianjin, CN;
Xunzhi Zhao, Tianjin, CN;
Yueqiu Pan, Tianjin, CN;
Yan Liu, Tianjin, CN;
Hong Cheng, Tianjin, CN;
Jian Li, Tianjin, CN;
CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE CO. LTD., Tianjin, CN;
CHINA NATIONAL OFFSHORE OIL CORP., Beijing, CN;
CNOOC ENERGY TECHNOLOGY & SERVICES LIMITED, Beijing, CN;
Abstract
The present disclosure relates to a method for a simulated moving bed to adsorb and separate polycyclic aromatic hydrocarbons. Zeolite, metal oxide and metal-modified materials are employed as adsorbent. Firstly, diesel oil flows through pre-treatment adsorbent to remove the trace amount of impurities. Secondly, the purified diesel oil flows through the simulated moving bed so that the PAHs can be separated from diesel oil. In this process, the valves are switched periodically, leading to the relative movement of adsorption beds. At the same time, desorbent is pumped into the equipment to wash out PAHs, achieving the continuous adsorption-regeneration operation. Thirdly, simple distillation is employed to separate desorbent from clean diesel oil and PAHs, respectively. Finally, the fractions of clean diesel oil and PAHs can be obtained, respectively. The separated desorbent can be recycled. The PAHs removal rate can reach to 90%.