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US 12,421,829 B2Granted
Combined carbon dioxide disposal and freshwater production from a saline aquifer
AssigneeSaudi Arabian Oil Company
InventorSimon A. Stewart
Life of this patent
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Abstract
A method and a system for sequestering carbon dioxide (CO2) while producing freshwater are provided. An exemplary method includes producing saline water from a saline aquifer, desalinating at least a portion of the saline water, producing freshwater and waste brine, mixing waste CO2 with the waste brine forming a brine/CO2 mixture, and injecting the brine/CO2 mixture into the saline aquifer.
Claims19
A method for sequestering carbon dioxide (CO2) while producing freshwater, the method comprising:
- producing saline water from a saline aquifer using a production well drilled to the saline aquifer;
- powering a reverse osmosis desalination plant with electricity from a solar power plant;
- desalinating at least a portion of the saline water in the reverse osmosis desalination plant, producing freshwater and waste brine;
- mixing waste CO2 with the waste brine using a continuous stirred tank reactor (CSTR), forming a brine/CO2 mixture that does not contain another brine or saline water other than the waste brine;
- and
- injecting the brine/CO2 mixture into the saline aquifer,
- wherein the CSTR comprises:
- a mixing paddle;
- a spray ring disposed within a headspace of the CSTR to drop droplets of the waste brine;
- and
- a CO2 sparger disposed near the bottom of the CSTR to provide bubbles of the waste CO2.
8 more elements
A system for sequestering carbon dioxide (CO2) while producing freshwater, the system comprising:
- a production well drilled to a saline aquifer to produce saline water;
- a solar power plant providing electricity to a desalination plant and a mixing plant;
- the desalination plant to produce freshwater from the saline water produced from the saline aquifer, and form a waste brine;
- the mixing plant to mix waste CO2 with the waste brine, to form a brine/CO2 mixture, the mixing plant comprising a continuous stirred tank reactor (CSTR), the CSTR comprising a mixing paddle, a spray ring disposed within a headspace of the CSTR to drop droplets of the waste brine, and a CO2 sparger disposed near the bottom of the CSTR to provide bubbles of the waste CO2;
- and
- an injection well drilled to the saline aquifer to inject the brine/CO2 mixture into the saline aquifer.
3 more elements
Dependencies are inferred from the claim text.