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:
May. 09, 2017
Filed:
Dec. 13, 2016
Zhejiang Quzhou Juxin Fluorine Chemical Co., Ltd., Quzhou, CN;
Zhejiang Quhua Fluor-chemistry Co., Ltd., Quzhou, CN;
Jun Lei, Ningbo, CN;
Aiguo Wang, Quzhou, CN;
Bo Yang, Quzhou, CN;
Yan Zhang, Quzhou, CN;
Huadong Zhou, Quzhou, CN;
Yang Zhao, Quzhou, CN;
Yi Zhu, Quzhou, CN;
Haili Xia, Quzhou, CN;
Haojin Shi, Quzhou, CN;
ZHEJIANG QUZHOU JUXIN FLUORINE CHEMICAL CO., LTD., Quzhou, CN;
ZHEJIANG QUHUA FLUOR-CHEMISTRY CO., LTD., Quzhou, CN;
Abstract
A method for preparing 2,3,3,3-tetrafluoropropene, including: a) introducing hexafluoropropylene and hydrogen to a first reactor for reaction in the presence of a catalyst to obtain a first mixture; b) washing and drying the first mixture, and introducing the treated first mixture to a first distillation column to obtain 1,1,1,2,3,3-hexafluoropropane, 1,1,1,2,3-pentafluoropropene, and hexafluoropropylene; recycling the 1,1,1,2,3,3-hexafluoropropane to the first reactor, and introducing the 1,1,1,2,3-pentafluoropropene and the hexafluoropropylene to a second distillation column to yield hexafluoropropylene and 1,1,1,2,3-pentafluoropropene; and recycling the hexafluoropropylene to the first reactor; c) introducing the 1,1,1,2,3-pentafluoropropene and hydrogen to a second reactor in the presence of a catalyst to obtain a second mixture; and d) washing and drying the second mixture, and introducing the second mixture to a third distillation column to yield 1,1,1,2,3-pentafluoropropane; and recycling the 1,1,1,2,3-pentafluoropropane to the second reactor to yield 2,3,3,3-tetrafluoropropene.