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:
Jun. 23, 2026
Filed:
May. 16, 2022
Tianhua Institute of Chemical Machinery and Automation Co., Ltd, Lanzhou, CN;
Xu Zhao, Lanzhou, CN;
Yongpeng Tan, Lanzhou, CN;
Yan Gao, Lanzhou, CN;
Kaixuan MA, Lanzhou, CN;
Yipeng Zhang, Lanzhou, CN;
Yuanrui Lu, Lanzhou, CN;
Xiangnan Zhai, Lanzhou, CN;
Tao Zhou, Lanzhou, CN;
Xiaoling Xie, Lanzhou, CN;
Abstract
A system and method for improving the water quality of a dehydration tower in a purified terephthalic acid device includes a dehydration washing device, a tail gas condensation device communicating with the top of the dehydration washing device, and a water separation device communicating with the tail gas condensation device. The system reduces energy consumption. The tail gas condensation device uses low-pressure vapor of about 0.05 MPa generated by an N-th-stage condenser as a heating medium. Working media are water and the low-pressure vapor, and no organic phase is involved in a process, and a reaction is stable and intrinsically safe. The water in the water separation tower is purified water and concentrated water, the purified water is returned to the top of the dehydration tower, and the concentrated water is mixed with a mother liquor and then enters the dehydration tower.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile