Chemical sequestering of CO2, NOx and SO2
OwnerRobert George Richardsoninventor
Life of this patent
Estimating the term…
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 sulfur dioxide (SO2), nitrogen oxide (NO), nitrogen dioxide (NO2) and carbon dioxide (CO2) by a loop sequence, comprising:
- a) providing a mixture of SO2, NO, NO2, CO2, sodium hypochlorite (NaOCl) sodium hydroxide (NaOH) and water (H2O) in one or more reaction chambers;
- b) reacting SO2 with NaOCl and H2O to generate sodium chloride (NaCl) and sulfuric acid (H2SO4) in the mixture;
- c) reacting NO and NO2 with NaOCl and H2O to generate sodium nitrate (NaNO3) and hydrochloric acid (HCl) in the mixture;
- d) reacting CO2 with NaOCl and H2O to generate hypochlorous acid (HOCl) and sodium bicarbonate (NaHCO3) in the mixture;
- e) reacting NO and NO2 with NaOH in the presence of NaOCl to generate sodium nitrite (NaNO2) and H2O in the mixture;
- f) reacting CO2 with NaOH to provide NaHCO3 in the mixture;
- g) adding an alcohol solvent to the mixture, forcing the generated NaCl NaHCO3 and Na2SO4 to precipitate, and removing the precipitate from the mixture;
- h) removing the alcohol solvent from the mixture;
- i) adding a dialkyl ketone solvent to the mixture, forcing the generated NaNO2, NaNO3 to precipitate, and removing the precipitate from the mixture;
- j) removing the dialkyl ketone solvent from the mixture;
- k) optionally adding NaOCl, NaOH and/or H2O to the mixture;
- and
- l) adding SO2, NO, NO2 and 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.