JAMES J GRAHAM
Engineering in Wayland, MA
License number
Massachusetts 9043
Issued Date
Mar 6, 1959
Expiration Date
Jun 30, 1986
Type
Chemical Engineer
Address
Address
Wayland, MA 01778
Professional information
Process For Reducing Thermal Shock In Fluidized Bed Stem Coils Cycled In And Out Of Service
US Patent:
4563267, Jan 7, 1986
Filed:
Jul 30, 1984
Appl. No.:
6/635550
Inventors:
James J. Graham - Wayland MA
Darrell D. Kinzler - Framingham MA
Edward P. Hunt - North Attleboro MA
Darrell D. Kinzler - Framingham MA
Edward P. Hunt - North Attleboro MA
Assignee:
The Badger Company, Inc. - Cambridge MA
International Classification:
C10G 3522, C10G 1110, F22B 1500
US Classification:
208159
Abstract:
The invention provides an improved method and apparatus for operating a fluidized bed chemical processing unit of the type having steam generating coils, so as to reduce the occurrence of thermally-induced stresses in the coils and thereby extend the useful life of the coils.
The invention involves causing the tube wall temperature of a coil being brought into service to be lowered from bed temperature prior to initiating water flow in the coil, so as to decrease the thermal shock temperature gradient and thereby reduce the magnitude of thermally-induced stress in the coil.
The invention utilizes a base coil in addition to the steam generating coil that is being cycled, and a pair of steam drums which operate at a pressure differential. The method involves generating saturated steam in the base coil and superheating the saturated steam in the coil being brought on line. Steam is directed from one drum to the other in a predetermined manner so as to provide proper temperature control of the coil being cycled.
Pollution Control For Fatty Acid Condensation
US Patent:
4188290, Feb 12, 1980
Filed:
Jun 29, 1977
Appl. No.:
5/811329
Inventors:
James J. Graham - Wayland MA
Roger J. Vernon - Maidenhead, GB2
Roger J. Vernon - Maidenhead, GB2
Assignee:
The Badger Company - Cambridge MA
International Classification:
B01D 500, B01D 2100
US Classification:
210 21
Abstract:
Steam carrying fatty acids is contacted in a barometric condenser with a cooling medium comprising a fatty acid having between six and eighteen carbon atoms to produce a liquid organic phase containing the fatty acids which were entrained in the steam, and an aqueous phase, such phases being readily separated by decantation. After separation of the phases, a portion of the organic phase is used for the cooling medium.