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US 12,179,145 B2Granted
Cryogenic separation of carbon dioxide, sulfur oxides, and nitrogen oxides from flue gas
AssigneeThe Texas A&M University System
InventorsMark T. Holtzapple, M. M. Faruque Hasan, Mohammed Sadaf Monjur
Life of this patent
Estimating the term…
Abstract
A method of removing pollutants from flue gas includes cooling the flue gas to remove condensed water. The flue gas is then compressed and dehydrated. The dehydrated flue gas is chilled to separate pollutants.
Claims20
A method of using a system to remove pollutants from flue gas, the method comprising:
- providing the flue gas to the system, the system comprising:
- a flue gas feed for receiving the flue gas;
- a first heat exchanger coupled to the flue gas feed, the first heat exchanger thermally removing heat from the flue gas to form a cooled flue gas;
- a dryer coupled to the cooled flue gas, the dryer forming a dehydrated flue gas;
- a second heat exchanger coupled to the dehydrated flue gas, the second heat exchanger thermally exposing the dehydrated flue gas to a chilled refrigerant to form a liquid;
- a pump coupled to the second heat exchanger, the pump increases a pressure of the liquid;
- and
- a third heat exchanger that thermally exposes the pressurized liquid to the dehydrated flue gas, the third heat exchanger forming pressurized waste gases;
- cooling, via the first heat exchanger, the flue gas to remove condensed water;
- compressing, via the pump, the flue gas;
- dehydrating, via the dryer, the flue gas;
- and
- chilling, via the second heat exchanger, the dehydrated flue gas to condense and separate pollutants.
10 more elements
A system for removing pollutants from a flue gas stream, the system comprising:
- a flue gas feed;
- a first heat exchanger coupled to the flue gas feed, the first heat exchanger thermally removing heat from the flue gas to form a cooled flue gas;
- a dryer coupled to the cooled flue gas, the dryer forming a dehydrated flue gas;
- a second heat exchanger coupled to the dehydrated flue gas, the second heat exchanger thermally exposing the dehydrated flue gas to a chilled refrigerant to form a liquid;
- a pump coupled to the second heat exchanger, the pump increases a pressure of the liquid;
- and
- a third heat exchanger that thermally exposes the pressurized liquid to the dehydrated flue gas, the third heat exchanger forming pressurized waste gases.
4 more elements
Dependencies are inferred from the claim text.