Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1980-05-06
1982-01-26
Chin, Peter
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
122 7C, 162 30K, 162 47, 423207, D21C 1112
Patent
active
043127029
ABSTRACT:
At start-up, a bed of pellets derived from pulp mill residual liquor is fluidized by feeding preheated air to the bed to initially raise the temperature of the bed to a temperature at which a particulate ligno-cellulosic auxiliary solid fuel may be completely consumed (800.degree.-850.degree. F.) and less than the yield temperature of the heat exchanger, feeding the auxiliary fuel to the fluidized bed, so as to burn the auxiliary fuel within the bed, feeding coolant to the heat exchanger to protect the heat exchanger from thermally induced damage, coordinating the rate of feeding of coolant with the rate of injection of the solid fuel to further increase the temperature of the bed to at least a temperature at which concentrated residual liquor from said mill will be burned while maintaining the temperature of the heat exchange equipment below the yield temperature for the material from which the heat exchanger is constructed and without build up of carbon in the bed, injecting concentrated residual liquor fuel from said pulp mill to the bed thereby to burn said residual liquor in the bed, continuing to inject at least one of said fuels, coordinating the rate of fuel injection to operate the bed at operating temperature while simultaneously maintaining a rate of addition of coolant to the heat exchanger to insure the temperature of the metal of the heat exchanger does not exceed the yield temperature.
REFERENCES:
patent: 3309262 (1967-03-01), Copeland et al.
patent: 3657064 (1972-04-01), Shick
patent: 3996863 (1976-12-01), Osborn
patent: 4235174 (1980-11-01), Spurrell
Chin Peter
Domtar Inc.
LandOfFree
Fluidized bed start up and operation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluidized bed start up and operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluidized bed start up and operation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1665706