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:
Dec. 13, 2011
Filed:
Mar. 22, 2010
Tomas Ekman, Saltsjö-Boo, SE;
Ola Ritzén, Akersberga, SE;
Anders Lugnet, Rimbo, SE;
Mats Gartz, Sollentuna, SE;
Tomas Ekman, Saltsjö-Boo, SE;
Ola Ritzén, Akersberga, SE;
Anders Lugnet, Rimbo, SE;
Mats Gartz, Sollentuna, SE;
AGA AB, Lidingo, SE;
Abstract
Method for homogenizing the heat distribution as well as decreasing the amount of NOin combustion products when operating an industrial furnace with at least one conventional burner using air as an oxidant. An additional oxidant including at least 50% oxygen gas is caused to stream into the furnace through a lance. The total amount of oxygen supplied is balanced against the amount of fuel being supplied through the air burner. Firstly, the combination of at least 40% of the supplied oxygen is supplied through the additional oxidant, the lance is arranged at a distance from the air burner of at least 0.3 meters, and the additional oxidant streams into the furnace through the lance with at least sonic velocity, and secondly the additional oxidant is supplied only when the air burner is operated at a certain lowest power or at a higher power.