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. 23, 2008
Filed:
Feb. 18, 2004
M. Shannon Melton, Tulsa, OK (US);
Donald F. Zetik, Sr., Tulsa, OK (US);
Dan P. Loveless, Collinsville, OK (US);
Frank W. Pickell, Friendswood, TX (US);
John Z. Varesic, Tiki Island, TX (US);
John H. Brinly, Montgomery, TX (US);
Gary M. Scoggin, Texas City, TX (US);
M. Shannon Melton, Tulsa, OK (US);
Donald F. Zetik, Sr., Tulsa, OK (US);
Dan P. Loveless, Collinsville, OK (US);
Frank W. Pickell, Friendswood, TX (US);
John Z. Varesic, Tiki Island, TX (US);
John H. Brinly, Montgomery, TX (US);
Gary M. Scoggin, Texas City, TX (US);
BP Corporation North America Inc., Warrenville, IL (US);
Abstract
A method for combusting fuel in a fired heater having one or more burners, the method. comprising: (a) combusting at least a portion of the fuel in the. presence of an oxidizer in the burners,. generating heat and producing a flue gas; and (b) recycling at least a portion. of the flue gas to. the burners;. wherein step (a) and step (b) are conducted in a manner such that the combusting takes place in a combustion regime represented. by 4,500−7554.8−933.72x+64.960x+0.47705y−0.55680z22,500; W wherein w represents a mole fraction of oxygen. in the oxidizer, x represents a recycle ratio of the flue as measured in moles of flue gas/mole of oxidizer; wherein y represents a temperature of the. flue gas in Fahrenheit recycled to the burners; and wherein. z represents a heating. value of the fuel in Btu/scf LHV.