Regenerating method for activated alumina used in regenerating working fluid of hydrogen peroxide

US8664137B2 · kind B2 · utility

Assignee

• Shanghai Huaming Hi-Tech (Group) Co., Ltd. · CN

Inventors

• Qiufang Wu · Shanghai, CN
• Guojian Chen · Longbeilingcun, CN
• Fuqing Li · Shanghai, CN
• Xinsheng Ma · Shanghai, CN
• Gang Chen · Sammamish, US
• Jinghui Yang · Los Angeles, US
• Zhiping Zhang · Longbeilingcun, CN

Key dates

• Filing date: Jan 28, 2008
• Grant date: Mar 4, 2014
• Expiry date: Sep 27, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A regenerating method for activated alumina used in regenerating working fluid of hydrogen peroxide comprises the following steps: adding deactivated alumina discharged from a regenerating bed for working fluid of hydrogen peroxide into a reactor through the top of the reactor and settling by gravity, oxidizing atmosphere entering into the reactor from the bottom of the reactor and running upwardly, then discharging exit gas and regenerated alumina through the discharge port on the top and discharging device on the bottom of the reactor respectively. The method is economic, environment-protective, safe, low-costly. The regenerated alumina will not poison palladium catalyst.