Michael D Varner

US Patent:

6905658, Jun 14, 2005

Filed:

Jun 29, 2001

Appl. No.:

09/896169

Inventors:

Kevin J. Rogers - Wadsworth OH, US
Michael G. Varner - North Canton OH, US
Kenneth F. Hoover - Mogadore OH, US

Assignee:

The Babcock & Wilcox Company - New Orleans LA

International Classification:

B01D053/34

US Classification:

422172, 422176, 422177, 422105

Abstract:

A device for channeling boiler flue gas flow and injecting controlled amounts of ammonia upstream of a selective catalytic reduction (SCR) NOremoval system. A perforated plate and/or damper can be located within one or more channels to provide volumetric control through a channel. Flow conditioning devices such as static mixing tabs and/or flow straightening tube bundles can optionally be included in each channel to improve mixing and velocity profiles. Gas flow rate measurements made, for example via pressure taps, within one or more channels can be used to measure flow and provide feedback for improved ammonia-to-NOmole ratio control.

US Patent:

56184999, Apr 8, 1997

Filed:

Jan 20, 1995

Appl. No.:

8/375884

Inventors:

Edward C. Lewis - Wadsworth OH
Donald P. Tonn - Copley OH
Michael G. Varner - Canton OH

Assignee:

The Babcock & Wilcox Company - New Orleans LA

International Classification:

B01J 800
C01B 2102

US Classification:

422177

Abstract:

An outage protection system for a SCR (selective catalytic reduction) reactor utilizes a pair of dampers to isolate the catalyst bed and the ammonia injection grid of the SCR reactor and to provide a blower driven closed loop flow of externally heated air from the injector grid across the catalyst bed to an external heater and back to the injection grid.

Address:

2514 North Ave, Cleveland, OH 44134

VIN:

1N6BA07B27N220649

Make:

NISSAN

Model:

TITAN

Year:

2007