Bonnie Courtemanche

US Patent:

8082860, Dec 27, 2011

Filed:

Apr 30, 2008

Appl. No.:

12/112571

Inventors:

Bonnie Courtemanche - Holden MA, US
Vlad Zarnescu - Worcester MA, US
Craig A. Penterson - Sutton MA, US

Assignee:

Babcock Power Services Inc. - Worcester MA

International Classification:

F23D 1/00
F23K 1/00

US Classification:

110263, 110232, 110347

Abstract:

An orifice plate for improving particle distribution within a coal piping system includes a plate body defining a central orifice therethrough bounded by an inner periphery of the plate body. The plate body is configured and adapted to be affixed between end flanges of adjacent pipes in a coal piping system so as to generally align the central orifice with an internal flow passage through the coal piping system. Flow disruption features are defined in the inner periphery of the plate body. The flow disruption features are configured and adapted to disrupt a flow of air and particles flowing through the central orifice to provide a more uniform distribution of particles downstream of the plate body than upstream.

US Patent:

20020174810, Nov 28, 2002

Filed:

May 24, 2001

Appl. No.:

09/864645

Inventors:

Craig Penterson - Sutton MA, US
Richard Dube - Billerica MA, US
Bonnie Courtemanche - Holden MA, US

International Classification:

F23C001/10

US Classification:

110/261000, 431/186000

Abstract:

A mixture of pulverized coal and primary air travels axially through a tubular nozzle body having an outlet end in and surrounded by axially flowing concentric streams of secondary and often tertiary air. In the nozzle body, the coal/air mixture flows through a venturi that concentrates the coal in a fuel rich central zone. The coal/air mixture then flows through a spreader that imparts a swirling motion to the mixture and divides the mixture into multiple discrete lobes or streams. At the outlet end of the nozzle body, a flame stabilizer ring produces a separation zone between the coal/air mixture exiting the nozzle body and the surrounding flow of secondary air. The flame stabilizer ring includes an outwardly flared skirt section that spreads the secondary air flow and inwardly directed teeth that extend into the streams of coal/air mixture flowing from the nozzle body outlet.

US Patent:

20120186501, Jul 26, 2012

Filed:

Jan 20, 2011

Appl. No.:

13/010568

Inventors:

Vlad Zarnescu - Worcester MA, US
Bonnie Courtemanche - Holden MA, US
Jilin Zhang - Worcester MA, US

Assignee:

Babcock Power Services, Inc. - Worcester MA

International Classification:

F23K 3/22

US Classification:

110101 R

Abstract:

A flow splitter distributes solid particles flowing in a fluid, such as coal particles flowing in air, through a piping system. The flow splitter includes a divider housing having an inlet configured to connect to an upstream pipe and having an outlet configured to connect to a plurality of downstream pipes, e.g., by way of a divider head. A divider body is mounted within the divider housing. A plurality of divider vanes is included, each extending from the divider body to the divider housing. The divider housing, divider body, and divider vanes are configured and adapted to reduce non-uniformity in particle concentration from the inlet and to supply a substantially equal particle flow from the outlet to each of the downstream pipes.