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. 07, 2010
Filed:
Oct. 12, 2006
J. David Martin, Elburn, IL (US);
Christopher R. Smyrniotis, St. Charles, IL (US);
Kent W. Schulz, Geneva, IL (US);
William H. Sun, Lisle, IL (US);
Scott K. Bohlen, Bucksport, ME (US);
Glenn Brewer, Newmarket, NH (US);
J. David Martin, Elburn, IL (US);
Christopher R. Smyrniotis, St. Charles, IL (US);
Kent W. Schulz, Geneva, IL (US);
William H. Sun, Lisle, IL (US);
Scott K. Bohlen, Bucksport, ME (US);
Glenn Brewer, Newmarket, NH (US);
Fuel Tech, Inc., Warrenville, IL (US);
Abstract
A slag and corrosion control process is described. The process entails: identifying the location of at least one slagging problem area in a boiler; introducing a slag control chemical comprising magnesium oxide or hydroxide into combustion gases in a location identified as having a slagging problem; identifying the location of at least one corrosion problem area in a boiler; and introducing a corrosion control chemical comprising a sulfate salt, bisulfite salt, sulfuric acid, or sulfur into combustion gases in a location identified as having a corrosion problem. In operation, these slag deposits will be sufficiently friable to be removed by relatively moderate application of physical energy, thus saving time and reducing any damage to the tubes by the cleaning process. The slag deposits are less voluminous and less in weight and are removed quickly. It is an advantage of the invention that slag can be removed with little or no shut down of a boiler.