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Process and apparatus for recovery of spent pulping liquors

Patent ·
OSTI ID:5483790
;
An integrated system, process and apparatus are provided for the efficient and effective recovery of spent pulping liquors, particularly kraft black liquor, whereby in an initial stage concentrated spent liquor is subjected to combustion in a reactor equipped with a plurality of particulate materials, at least one of which is of finer particle size than the other, preferably subjecting a portion of said particulate materials to at least one further treatment in a fluidized bed unit, and treating the inorganic solid combustion products in a reducing atmosphere.
Assignee:
International Paper Co
Patent Number(s):
US 4303469
OSTI ID:
5483790
Country of Publication:
United States
Language:
English

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Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
CHEMICAL REACTIONS
COMBUSTION
ENERGY RECOVERY
FLUE GAS
FLUIDIZED-BED COMBUSTION
GASEOUS WASTES
HEAT EXCHANGERS
HEAT RECOVERY
INDUSTRIAL WASTES
LIQUID WASTES
MANAGEMENT
OXIDATION
PROCESSING
RECOVERY
SPENT LIQUORS
THERMOCHEMICAL PROCESSES
WASTE HEAT UTILIZATION
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES