PAUL D KRAWCZYK
Broker in Montgomery, MA
License number
Massachusetts 122553
Issued Date
Feb 1, 1980
Expiration Date
Oct 26, 2018
Type
Broker
Address
Address
Montgomery, MA 01085
Professional information
Dry Solids Pump System For Feeding A High Pressure Combustor
US Patent:
5560550, Oct 1, 1996
Filed:
Dec 22, 1994
Appl. No.:
8/362800
Inventors:
Paul D. Krawczyk - Westfield MA
Assignee:
Combustion Engineering, Inc. - Windsor CT
International Classification:
B02C 1912, B02C 2318
US Classification:
241 19
Abstract:
A method for feeding a dry pulverized solid material such as coal or limestone into a high pressure combustor is disclosed which employs a high pressure combustor is disclosed which employs a high pressure dry solids pump. The material is first pulverized and transported with air to a separator. The separated solids are temporarily accumulated and fed to one or more dry solids pump which continuously discharge the compact solids at high pressure into a gas mixing chamber. The compact solids are mixed with transport air as a dense phase for transport to the high pressure combustor.
Rotating Drum End Seal
US Patent:
4650340, Mar 17, 1987
Filed:
Nov 1, 1985
Appl. No.:
6/793942
Inventors:
Paul D. Krawczyk - Westfield MA
Alexander Bosso - Broad Brook CT
Alexander Bosso - Broad Brook CT
Assignee:
Combustion Engineering, Inc. - Windsor CT
International Classification:
B01F 900
US Classification:
366220
Abstract:
Apparatus for sealing an opening (12) in the end face (13) of a rotating drum (10), including a stationary backing plate (24), annular seal ring (20), surrounding the opening and extending in a sealing manner between the backing plate and the end face, resilient means (30 or 52) biasing the sealing ring into contact with the end face, and adjustable means (36 or 56, 58) for varying the force exerted by the resilient means.