Michael J Hargrove

US Patent:

20110155347, Jun 30, 2011

Filed:

Mar 25, 2010

Appl. No.:

12/731539

Inventors:

Michael J. Hargrove - Windsor Locks CT, US
Gary J. Navitsky - New Hartford CT, US
Jason J. Wailgum - Worcester MA, US
Bernard H. Walsh - Feeding Hills MA, US

Assignee:

ALSTOM TECHNOLOGY LTD. - Baden

International Classification:

F28D 15/00
F22D 7/00

US Classification:

16510419, 1224061, 1224063, 122459

Abstract:

A fluid recirculation system includes an arrangement of a flow control valve located to receive a flow of fluid from an inlet. The system further comprises an economizer inlet mixing device located to receive the flow of hotter fluid from the arrangement of the flow control valve and from a cooler feedwater stream. An economizer inlet mixing device located upstream of an economizer in a supercritical pressure boiler includes a sparger assembly through which a flow of fluid from the waterwall outlet is received, an inlet through which a flow of fluid from a feed stream is received, and a wave breaker assembly through which an outlet stream from the economizer inlet mixing device is directed. A method of increasing and controlling the temperature of a flue gas exiting an economizer in a supercritical pressure boiler includes receiving at least a flow of fluid from a fluid stream from a furnace waterwall outlet, combining at least a portion of the received flow of fluid with a feedwater stream, and directing the combined received flow of fluid and feedwater stream to an economizer inlet to decrease the economizer heat absorption.

US Patent:

54011302, Mar 28, 1995

Filed:

Dec 23, 1993

Appl. No.:

8/173539

Inventors:

John H. Chiu - West Hartford CT
Michael J. Hargrove - Windsor Locks CT
Glen D. Jukkola - Glastonbury CT
Mark A. Douglas - Navan, CA
Stuart A. Morrison - Orleans, CA
Steve Y. Wong - Kanata, CA

Assignee:

Combustion Engineering, Inc. - Windsor CT

International Classification:

F23G 500

US Classification:

410245

Abstract:

A fluidized bed combustion system (10) particularly suited for use to effect the incineration, i. e. , combustion, therewith of wood waste/sludge mixtures that have high moisture and ash content which makes them difficult to burn. The fluidized bed combustion system (10) includes a fluidized bed combustor (12) embodying a fluidized bed (24) composed of bed solids. Air is injected into the fluidized bed (24) through an air distributor (28) to establish a first controlled fluidizing velocity zone and a second controlled fluidizing velocity zone therewithin. Material (42b) is introduced into the fluidized bed combustor (12) above the second controlled fluidizing velocity zone. Bed solids are projected from the first controlled fluidizing velocity zone to the second controlled fluidizing velocity zone whereupon the bed solids rain down upon the material (42b) and effect a covering thereof. The material (42b) is then dried and thereafter combusted. Inerts/tramp materials/clinkers as well as large diameter solids entrained with the material (42b) are segregated therefrom and then are removed (14,200) from the fluidized bed combustor (12).