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:
Dec. 16, 2025
Filed:
Jan. 05, 2023
Hangzhou Oxygen Plant Group Co., Ltd., Hangzhou, CN;
Yisong Han, Hangzhou, CN;
Fang Tan, Hangzhou, CN;
Xudong Peng, Hangzhou, CN;
Lijian Lao, Hangzhou, CN;
Ling Li, Hangzhou, CN;
Lei Yao, Hangzhou, CN;
Meifeng Ren, Hangzhou, CN;
Shenjun Xu, Hangzhou, CN;
Xiaoyu Xie, Hangzhou, CN;
HANGZHOU OXYGEN PLANT GROUP CO., LTD., Hangzhou, CN;
Abstract
A device and a method for producing hydrogen and byproduct oxygen by using green electricity electrolyzed water are provided. The device comprises an oxygen purifying system, a heat exchange system, an air separation compression and expansion system, an air separation rectification system and a liquid oxygen storage system. The method comprises the following steps: first, purifying oxygen prepared by electrolyzing water by green electricity to remove impurities such as hydrogen, carbon monoxide, carbon dioxide and water in the oxygen, then feeding the pure oxygen into the heat exchange system, performing heat exchange liquefaction to obtain liquid oxygen, coupling the liquid oxygen generated by rectification of the air separation rectification system, and obtaining pressurized oxygen through the heat exchange system and the air separation compression and expansion system.