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:
Oct. 04, 2022
Filed:
Dec. 31, 2018
China University of Petroleum(east China), Qingdao, CN;
Yingfei Hou, Qingdao, CN;
Yang Xu, Qingdao, CN;
Mumin Wang, Qingdao, CN;
Congcong Chen, Qingdao, CN;
Yiyu Li, Qingdao, CN;
Qingshan Niu, Qingdao, CN;
CHINA UNIVERSITY OF PETROLEUM(EAST CHINA), Qingdao, CN;
Abstract
The present invention relates to the field of composite membrane and discloses a polyurethane/polyvinylidene fluoride composite membrane for extracting organic sulfide from naphtha. The polyurethane/polyvinylidene fluoride composite membrane includes an active layer and a support layer where the active layer is a polyurethane casting membrane and the support layer is a polyvinylidene fluoride membrane. The polyurethane/polyvinylidene fluoride composite membrane is prepared by coating the active layer onto the support layer. At the same time, a preparation method for the polyurethane/polyvinylidene fluoride composite membrane is disclosed. The present invention has the following beneficial effects: the polyurethane/polyvinylidene fluoride composite membrane prepared in the present invention may be used to extract organic sulfide in naphtha with high separation efficiency. Further, the composite membrane almost does not change the octane number and the like of the raw material oil, thereby improving the extraction rate of the organic sulfide.