Subsurface capture of carbon dioxide
OwnerGerald Blount, Alvin A. Siddal +1inventors
InventorsGerald Blount, Alvin A. Siddal, Ronald W. Falta
Life of this patent
Estimating the term…
Abstract
A process and apparatus of separating CO2 gas from industrial off-gas source in which the CO2 containing off-gas is introduced deep within an injection well. The CO2 gases are dissolved in the, liquid within the injection well while non-CO2 gases, typically being insoluble in water or brine, are returned to the surface. Once the CO2 saturated liquid is present within the injection well, the injection well may be used for long-term geologic storage of CO2 or the CO2 saturated liquid can be returned to the surface for capturing a purified CO2 gas.
Claims11
A process of separating carbon dioxide from a waste gas comprising the steps of:
- transporting said waste gas from above ground to a saturation module below ground, the saturation module being within a well, the waste gas comprising carbon dioxide and non-carbon dioxide gases, the waste the to the saturation module via a supply line:
- transporting a liquid within the well, the liquid flowing downward below ground and within the well;
- introducing said waste gas from the supply line into the liquid contained within said well at the saturation module, the carbon dioxide dissolving into the liquid following the introduction and the liquid becoming saturated with the carbon dioxide within the well, the non-carbon dioxide gases substantially insoluble in said liquid;
- returning the non-carbon dioxide gases to above-ground via a first return line from the saturation module;
- and
- removing the liquid that has been saturated with the carbon dioxide from the well.
Dependencies are inferred from the claim text.