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.:
Date of Patent:
Jul. 05, 2005
Filed:
Mar. 24, 2004
Erwin Penfornis, Levallois-Perret, FR;
Ovidiu Marin, St. Cloud, FR;
Rajani Varagani, Lombard, IL (US);
M. Usman Ghani, Bolingbrook, IL (US);
Erwin Penfornis, Levallois-Perret, FR;
Ovidiu Marin, St. Cloud, FR;
Rajani Varagani, Lombard, IL (US);
M. Usman Ghani, Bolingbrook, IL (US);
American Air Liquide, Inc., Fremont, CA (US);
Abstract
An improved process for burning a fuel to produce a flue gas is disclosed. The fuel is burned in a main combustion zone in the presence of a main combustion oxidant to produce combustion products. The combustion products are mixed in a post-combustion zone positioned downstream from the main combustion zone. The post-combustion zone is provided with a recirculation zone positioned proximate to the main combustion zone and an injection zone positioned downstream from the recirculation zone. An post-combustion oxidant is injected into the combustion products in the injection zone. At least one of (a) the residence time of the combustion products in the post-combustion zone, (b) the temperature range of the combustion products contained within the injection zone and (c) the oxygen content of the oxidant is controlled to optimize the level of CO and NOin the flue gas.