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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.:

US 12378686 B1

PDFFull Text
Date of Patent:
Aug. 05, 2025

Filed:

Sep. 15, 2022

Device and method for recovering by-product oxygen of hydrogen production from electrolyzed water by low-temperature method

Applicant:

Hangzhou Oxygen Plant Group Co., Ltd., Hangzhou, CN;

Inventors:

Yisong Han, Hangzhou, CN;

Fang Tan, Hangzhou, CN;

Xudong Peng, Hangzhou, CN;

Ling Li, Hangzhou, CN;

Lei Yao, Hangzhou, CN;

Lijian Lao, Hangzhou, CN;

Xin Song, Hangzhou, CN;

Yunyun Jiang, Hangzhou, CN;

Dongdong Zhao, Hangzhou, CN;

Xiaoyu Xie, Hangzhou, CN;

Assignee:

HANGZHOU OXYGEN PLANT GROUP CO., LTD., Hangzhou, CN;

Attorney:

Proi Intellectual Property US

Primary Examiner:

Robert Clemente

Int. Cl.
CPC ...
C25B 15/08 (2006.01); B01J 21/04 (2006.01); B01J 23/63 (2006.01); C01B 13/02 (2006.01); C25B 1/04 (2021.01); F25J 1/00 (2006.01);
U.S. Cl.
CPC ...
C25B 15/085 (2021.01); B01J 21/04 (2013.01); B01J 23/63 (2013.01); C01B 13/0237 (2013.01); C25B 1/04 (2013.01); C25B 15/081 (2021.01); C25B 15/083 (2021.01); F25J 1/0017 (2013.01); C01B 2210/0004 (2013.01); C01B 2210/005 (2013.01); C01B 2210/0053 (2013.01);
Abstract

A device and a method for recovering by-product oxygen from water-electrolysis hydrogen production using a low-temperature method are provided, solving the waste problem of by-product oxygen in the green water-electrolysis hydrogen production system. The device according to the present disclosure comprises an oxygen clarifying system, a pressurizing and heat exchanging system, and a circulating gas compression and expansion refrigeration system. The recovering method according to the present disclosure comprises the following steps: first clarifying and purifying the by-product oxygen from water-electrolysis hydrogen production is to remove hydrogen, carbon monoxide, carbon dioxide, water and other impurities in the oxygen; and then, liquefying, pressurizing and heat exchanging the pure oxygen to obtain the product oxygen and liquid oxygen with required pressure. In the whole process, the cooling capacity is provided by the circulating gas expansion refrigeration system.

Find Patent Forward Citations

Han, Yisong. (2025). Device and method for recovering by-product oxygen of hydrogen production from electrolyzed water by low-temperature method (U.S. Patent No. 12378686). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12378686

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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