Chemical sequestering of CO2, NOx and SO2
OwnerRobert George Richardsoninventor
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Abstract
The disclosure provides seven integrated methods for the chemical sequestration of carbon dioxide (CO2), nitric oxide (NO), nitrogen dioxide (NO2) (collectively NOx, where x=1, 2) and sulfur dioxide (SO2) using closed loop technology. The methods recycle process reagents and mass balance consumable reagents that can be made using electrochemical separation of sodium chloride (NaCl) or potassium chloride (KCl). The technology applies to marine and terrestrial exhaust gas sources for CO2, NOx and SO2. The integrated technology combines compatible and green processes that capture and/or convert CO2, NOx and SO2 into compounds that enhance the environment, many with commercial value.
Claims10
A method of chemically sequestering carbon dioxide (CO2) by a loop sequence, comprising:
- a) providing a mixture of CO2, lithium hydroxide (LiOH), either of sodium hydroxide (NaOH) or potassium hydroxide (KOH), and water (H2O) in one or more reaction chambers;
- b) reacting CO2 with LiOH to generate lithium carbonate (Li2CO3) and H2O in the mixture;
- c) reacting Li2CO3 with NaOH or KOH to generate LiOH, and either of sodium carbonate (Na2CO3) or potassium carbonate (K2CO3) in the mixture;
- d) reacting Na2CO3 or K2CO3 with CO2 and H2O to generate either of sodium bicarbonate (NaHCO3) or potassium bicarbonate (KHCO3) in the mixture;
- e) adding an alcohol solvent to the mixture, forcing the generated NaHCO3 or KHCO3 to precipitate, and removing the precipitated NaHCO3 or KHCO3 from the mixture;
- f) removing the alcohol solvent from the mixture;
- g) optionally adding NaOH or KOH, and/or H2O to the mixture;
- and
- h) adding CO2 to the mixture in the one or more reaction chambers and reacting the mixture according to step b to complete the loop sequence.
Dependencies are inferred from the claim text.