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:
Aug. 14, 1984
Filed:
Jan. 03, 1984
Elwyn Shimoda, Ponca City, OK (US);
Conoco Inc., Ponca City, OK (US);
Abstract
A method of increasing the efficiency of a cyclone-fired boiler which uses high sodium lignite as fuel. The fuel produces ash deposits on heat transfer surfaces within the boilers, and in accordance with the method, powdered limestone is periodically injected into the firebox of the boiler in a quantity and for a time period such that the limestone is heated to a temperature in the range of from about 2200.degree. F. to about 2700.degree. F. and reacts with ash deposits in the boiler to form layers thereon. The layers so formed have a higher ash fusion temperature than the unreacted deposits and cause the resulting composite deposit to be more friable whereby the deposit can be removed using conventional soot blower apparatus.