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:
Feb. 02, 2021
Filed:
May. 15, 2017
Tianhua Institute of Chemical Machinery and Automation Co., Ltd, Gansu, CN;
Xu Zhao, Gansu, CN;
Zhongxin Sun, Gansu, CN;
Wanyao Zhang, Gansu, CN;
Tianbao Wang, Gansu, CN;
Xiangnan Zhai, Gansu, CN;
Yongpeng Tan, Gansu, CN;
Guohai Zhang, Gansu, CN;
Yu Guo, Gansu, CN;
Xiaoling Xie, Gansu, CN;
Abstract
The present invention relates to a method for processing acetic acid solvent in Crude Terephthalic Acid (CTA) in an oxidized unit of a pure terephthalic acid (PTA) industrial apparatus. In the present invention, a filter cake in CTA is washed by means of a two-stage-three-step method. The present invention further shortens the production process of solvent exchanging technique of CTA pressure filters, improves production capacity of a device, reduces investment of the device, reduces energy consumption of a system, and solves the shortcomings of the existing CTA solvent exchanging technique of the pressure filters.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile