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. 20, 1991
Filed:
Dec. 19, 1988
Claudia C Pierce, Lisle, IL (US);
Roger W Fowee, Wheaton, IL (US);
John E Hoots, St. Charles, IL (US);
Nalco Chemical Company, Naperville, IL (US);
Abstract
Concentration cycles, percent life holding time for a component in the boiler and continuous treatment concentrations are monitored or determined in a boiler system by adding to the feedwater an inert tracer in a predetermined concentration C.sub.I, which reaches a final concentration C.sub.F at steady state in the boiler and which exhibits a blowdown concentration C.sub.t at different points in time. The component is an inert tracer having no significant carryover in the steam, nor significant degradation during boiler cycles. The tracer is monitored by continuously converting a characteristic of its concentration to an analog which may be recorded as a function of time.