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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 11066916 B1

PDFFull Text
Date of Patent:
Jul. 20, 2021

Filed:

Mar. 06, 2017

Nozzle and injection device for use in underground coal gasification process and method for operating injection device

Applicant:

Zhongwei (Shanghai) Energy Technology Co. Ltd, Shanghai, CN;

Inventors:

Zhenhua Min, Shanghai, CN;

Yuanli Wang, Shanghai, CN;

Casper Jan Hendrik Burger, Shanghai, CN;

Assignee:

ZHONGWEI (SHANGHAI) ENERGY TECHNOLOGY CO. LTD, Shanghai, CN;

Attorneys:

Dunlap Bennett & Ludwig, PLLC

Brendan E. Squire

Primary Examiner:

Janine M Kreck

Assistant Examiner:

Michael A Goodwin

Int. Cl.
CPC ...
E21B 43/295 (2006.01); E21B 43/243 (2006.01); E21B 10/61 (2006.01); E21B 41/00 (2006.01); B05B 15/14 (2018.01); B05B 1/00 (2006.01); E21B 29/00 (2006.01); E21B 34/06 (2006.01); E21B 47/06 (2012.01); E21B 47/07 (2012.01);
U.S. Cl.
CPC ...
E21B 43/295 (2013.01); E21B 10/61 (2013.01); E21B 41/0078 (2013.01); E21B 43/243 (2013.01); B05B 1/005 (2013.01); B05B 15/14 (2018.02); E21B 29/00 (2013.01); E21B 34/06 (2013.01); E21B 47/06 (2013.01); E21B 47/07 (2020.05);
Abstract

An injection device, which comprises a nozzle and which is used for an underground coal gasification process; the nozzle and the injection device are used for continuously injecting a high-concentration oxidant into an underground coal layer during the underground coal gasification process, in which case the high-concentration oxidant may be used safely and steadily to obtain a high-quality and stable product gas, while a retraction cycle and/or a retraction distance of a retraction method in the existing technology may be greatly shortened, thus achieving the continuous and steady operation of the underground coal gasification process. Also disclosed is a method for operating the injection device.

Find Patent Forward Citations

Min, Zhenhua. (2021). Nozzle and injection device for use in underground coal gasification process and method for operating injection device (U.S. Patent No. 11066916). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11066916

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