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 8664138 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 04, 2014

Filed:

Jan. 28, 2008
Applicants:

Fuqing LI, Shanghai, CN;

Xinsheng MA, Shanghai, CN;

Gang Chen, Shanghai, CN;

Qiufang Wu, Shanghai, CN;

Guojian Chen, Shanghai, CN;

Yubao Gan, Shanghai, CN;

Jinghui Yang, Shanghai, CN;

Inventors:

Fuqing Li, Shanghai, CN;

Xinsheng Ma, Shanghai, CN;

Gang Chen, Shanghai, CN;

Qiufang Wu, Shanghai, CN;

Guojian Chen, Shanghai, CN;

Yubao Gan, Shanghai, CN;

Jinghui Yang, Shanghai, CN;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J 38/26 (2006.01); B01J 20/00 (2006.01); C01B 15/023 (2006.01); C01F 7/02 (2006.01);
U.S. Cl.
CPC ...
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 with fire resistant alumina 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, discharging regenerated alumina and fire resistant alumina through the discharging device on the bottom of the reactor, discharging exit gas through the discharge port on the top of the reactor, the reaction temperature ranging from 360-800° C., the residence time of solid feed in the reactor ranging from 3-15 h. The method is economic, environment-protective, safe, and low-costly. The regenerated alumina will not poison palladium catalyst.


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Li, Fuqing. (2014). Regenerating method for activated alumina used in regenerating working fluid of hydrogen peroxide (U.S. Patent No. 8664138). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8664138

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