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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 11796170 B1

PDFFull Text
Date of Patent:
Oct. 24, 2023

Filed:

Apr. 18, 2022

Heat exchange tube of waste heat boiler

Applicant:

Zhejiang University, Hangzhou, CN;

Inventors:

Zengyi Ma, Hangzhou, CN;

Jianhua Yan, Hangzhou, CN;

Yike Zhang, Hangzhou, CN;

Wenhan Li, Hangzhou, CN;

Ruofeng Gao, Hangzhou, CN;

Zhe Chen, Hangzhou, CN;

Yaming Cai, Hangzhou, CN;

Pucheng Zhong, Hangzhou, CN;

Assignee:

ZHEJIANG UNIVERSITY, Hangzhou, CN;

Attorney:
Primary Examiner:

Steven S Anderson, Ii

Int. Cl.
CPC ...
C23C 22/08 (2006.01); C23C 22/74 (2006.01); F16L 58/14 (2006.01); F22B 37/02 (2006.01); F22B 37/04 (2006.01); F22B 37/06 (2006.01);
U.S. Cl.
CPC ...
F22B 37/025 (2013.01); F22B 37/04 (2013.01); F22B 37/06 (2013.01);
Abstract

Disclosed is a heat exchange tube of waste heat boiler, which includes a tube body. The outer surface of the tube body is sprayed with a layer of anti-corrosion coating. The components of the anti-corrosion coating are AlO, CaAlOand Ca(PO). On the surface of nano anti-corrosion coating, HF reacts with AlO, CaAlOand Ca(PO)to form AlFand Ca(PO)F, which are tightly wrapped on the surface of the coating, thereby effectively preventing HF from corroding the interior of the coating and the heat exchange tube. Meanwhile, due to the anti-corrosion coating with the specific composition of the present disclosure, the heat exchange tube of the present disclosure can be resistant to fluorine corrosion at a high temperature of 600° C. or more, and can be used at a rather high temperature of 1000° C. or more.

Find Patent Forward Citations

Ma, Zengyi. (2023). Heat exchange tube of waste heat boiler (U.S. Patent No. 11796170). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11796170

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