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:
Apr. 05, 2005
Filed:
Jan. 29, 2003
Richard R. Martin, Tulsa, OK (US);
Doyle C. Bishop, Tulsa, OK (US);
Paul M. Rodden, Beggs, OK (US);
Kurt E. Kraus, Tulsa, OK (US);
Richard R. Martin, Tulsa, OK (US);
Doyle C. Bishop, Tulsa, OK (US);
Paul M. Rodden, Beggs, OK (US);
Kurt E. Kraus, Tulsa, OK (US);
Callidus Technologies, L.L.C., Tulsa, OK (US);
Abstract
An improved burner assembly and process for operating same using a burner design that produces very low levels of undesirable nitrogen oxides is provided. The burner assembly premixes primary fuel and air in a venturi system and recirculates combustion gases back to the burner through a plurality of recirculation conduits where it is mixed with the premix of fuel and air and secondary air prior to combustion in a primary combustion zone. Rapid premixing of the primary fuel and air in the venturi system and the dispersion of the recirculated furnace gases is believed to result in lower peak flame temperatures and therefore minimizing the formation of the pollutants, such as nitrogen oxides.