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:
Sep. 05, 2023
Filed:
Dec. 19, 2019
Applicant:
Wanhua Chemical Group Co., Ltd., Shandong, CN;
Inventors:
Zhenlong Fan, Shandong, CN;
Yanfeng Dong, Shandong, CN;
Fanxue Zeng, Shandong, CN;
Jianchu Ye, Shandong, CN;
Bingwen Leng, Shandong, CN;
Genhai Yu, Shandong, CN;
Xinchun He, Shandong, CN;
Hongke Zhang, Shandong, CN;
Assignee:
Wanhua Chemical Group Co., Ltd., Shandong, CN;
Primary Examiner:
Int. Cl.
CPC ...
C02F 9/00 (2023.01); B01D 1/26 (2006.01); C02F 1/04 (2023.01); B01D 17/02 (2006.01); C02F 1/00 (2023.01); C02F 1/40 (2023.01); C02F 1/66 (2023.01); C02F 1/72 (2023.01); C02F 3/00 (2023.01); C02F 101/10 (2006.01); C02F 101/32 (2006.01); C02F 103/36 (2006.01);
U.S. Cl.
CPC ...
C02F 9/00 (2013.01); B01D 1/26 (2013.01); B01D 17/0208 (2013.01); C02F 1/001 (2013.01); C02F 1/043 (2013.01); C02F 1/048 (2013.01); C02F 1/40 (2013.01); C02F 1/66 (2013.01); C02F 1/725 (2013.01); C02F 3/00 (2013.01); C02F 2101/10 (2013.01); C02F 2101/32 (2013.01); C02F 2103/36 (2013.01); C02F 2301/046 (2013.01);
Abstract
Method for treating production wastewater from the preparation of propylene oxide by co-oxidation. The wastewater includes a first portion of wastewater having a peroxide content of 2000 mg/L or more and a second portion of wastewater having a peroxide content of 50 mg/L or less.