Method of immobilizing carbon dioxide from gas streams

Patent · Tue Jul 24 00:00:00 EDT 1979

OSTI ID:5289300

Holladay, D W; Haag, G L

This invention comprises a method for rapidly and continuously immobilizing carbon dioxide contained in various industrial off-gas streams, the carbon dioxide being immobilized as dry, stable, and substantially water-insoluble particulates. Briefly, the method comprises passing the gas stream through a fixed or fluidized bed of hydrated barium hydroxide to remove and immobilize the carbon dioxide by converting the bed to barium carbonate. The method has several important advantages: it can be conducted effectively at ambient temperature; it provides a very rapid reaction rate over a wide range of carbon dioxide concentrations; it provides high decontamination factors; and it has a high capacity for carbon dioxide. The invention is especially well suited for the removal of radioactive carbon dioxide from off-gases generated by nuclear-fuel reprocessing facilities and nuclear power plants.

• Assignee: Dept. of Energy
• Patent Number(s): US 4162298
• OSTI ID: 5289300
• Country of Publication: United States
• Language: English

Related Subjects

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052001* -- Nuclear Fuels-- Waste Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
22 GENERAL STUDIES OF NUCLEAR REACTORS
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ADSORPTION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM HYDROXIDES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON 14
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON ISOTOPES
CARBON OXIDES
CHALCOGENIDES
EVEN-EVEN NUCLEI
FUEL REPROCESSING PLANTS
HYDRATES
HYDROGEN COMPOUNDS
HYDROXIDES
ISOTOPES
LIGHT NUCLEI
MANAGEMENT
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
NUCLEI
OFF-GAS SYSTEMS
OXIDES
OXYGEN COMPOUNDS
POWER PLANTS
PROCESSING
RADIOACTIVE EFFLUENTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
RADIOISOTOPES
REPROCESSING
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
THERMAL POWER PLANTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
YEARS LIVING RADIOISOTOPES