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:
Oct. 26, 1993
Filed:
Oct. 25, 1991
Albert C Buford, III, Cabot, AR (US);
Donal W Moore, Russellville, AR (US);
Sterling J Weems, Chevy Chase, MD (US);
John B Mason, Pasco, WA (US);
Other;
Abstract
A steam generator chemical solvent mixing system and method is provided. The chemical solvent mixing system includes a pump, having a discharge port fluidly connected to a discharge line and a suction port fluidly connected to a suction line. An upper level injector, including an injector nozzle extends through one upper access opening in the outer casing of a steam generator and extends into the annulus of the generator between the tube bundle shroud and the outer casing, the upper level injector being fluidly connected to the discharge port of the pump. A lower access eductor is provided, including an eductor nozzle extending through one lower access opening of the outer casing and adapted to discharge solvent through one passageway in the tube bundle shroud and into the tube bundle of the generator, the lower access eductor being fluidly connected to the discharge port of the pump. A gas injection line is provided, fluidly connected at one end to a gas source and at the other end to the lower access eductor. A return line fluidly connects at one end to a second lower access opening and at the other end to the suction port of the pump. A method for chemically cleaning a steam generator is also provided utilizing the system to fill the steam generator with solvent and circulate the solvent within the generator.