Method of immobilizing carbon dioxide from gas streams

Patent · 01 January 1979

OSTI ID:863394

Holladay, David W ^[1]; Haag, Gary L ^[2]

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1. Knoxville, TN
2. Oliver Springs, TN

This invention is 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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4162298
• OSTI ID: 863394
• Country of Publication: United States
• Language: English

Related Subjects

/588/376/423/
active carbon
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bed
briefly
capacity
carbon
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comprises
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concentrations
conducted
contained
continuously
converting
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fixed
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fuel reprocessing
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nuclear
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nuclear-fuel
off-gas
off-gas stream
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oxide concentration
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plants
power
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power plants
provides
radioactive
range
rapid
rapidly
rate
reaction
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removal
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reprocessing
stable
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substantially
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temperature
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