Method of immobilizing carbon dioxide from gas streams

Patent · Mon Jan 01 00:00:00 EST 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 (United States)
• 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

method
immobilizing
carbon
dioxide
gas
streams
rapidly
continuously
contained
various
industrial
off-gas
immobilized
dry
stable
substantially
water-insoluble
particulates
briefly
comprises
passing
stream
fixed
fluidized
bed
hydrated
barium
hydroxide
remove
immobilize
converting
carbonate
advantages
conducted
effectively
ambient
temperature
provides
rapid
reaction
rate
wide
range
concentrations
decontamination
factors
capacity
especially
suited
removal
radioactive
off-gases
generated
nuclear-fuel
reprocessing
facilities
nuclear
power
plants
barium hydroxide
gases generated
decontamination factor
power plants
reaction rate
nuclear power
method comprises
carbon dioxide
fluidized bed
gas stream
ambient temperature
gas streams
wide range
power plant
off-gas stream
fuel reprocessing
method comprise
substantially water-insoluble
active carbon
comprises passing
immobilizing carbon
oxide concentration
/588/376/423/