Siemens Energy, Inc.

Siemens Power Generation, Inc.

Fred W Shoemaker

James C Bellows

Michael Scot Briesch

Terrence Blaise Sullivan

Philip G Deen

A power plant may include a combustion apparatus () producing an exhaust gas (), an absorber () receiving the exhaust gas (), the absorber () including a desiccant and producing a first stream of desiccant solution containing water and a first concentration of desiccant, and an apparatus () for dehydrating the first stream of desiccant solution while maintaining the water in a liquid phase. The apparatus () may include a heat exchanger (), a crystallizing heat exchanger (), a separator () and a flash tank () for dehydrating the desiccant solution while maintaining water in a liquid phase and subsequently recovering water from the solution.

System for recovering water from flue gas

A method of evaluating a power plant having a design life based on operating the plant within an allowable chemical exposure range includes accumulating a history of a chemical exposure of a steam generating portion of the power plant. The method also includes determining a remaining life of the plant based on the history of the chemical exposure and assuming continued operation of the plant within the allowable chemical exposure range. The method may also include evaluating an economic value of operating the plant based on the remaining life of the plant.

Power plant life assessment

The present invention comprises an apparatus and method for efficiently venting impurities from a heat recovery steam generator system by concentrating the impurities in a condensing deaerating vent lineand then venting a proportionately small amount of steam with a proportionately high concentration of impurities. The condensing deaerating vent lineis attached to a low pressure drum, and feed watermay be added to the upper portion of the condensing deaerating vent lineto improve condensation and conserve thermal energy.

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Longwood, FL, United States of America

Fred W Shoemaker