Structured powders for carbon dioxide capture
AssigneeAnvil Capture Systems Inc.
InventorsJames Warner Lawler, Corey Adam Myers
Life of this patent
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Abstract
A structured powder for capturing CO2 from a gas stream includes an agglomerated powder, wherein magnesium hydroxide is 5 wt % to 90 wt % of the powder, and particles of the powder have a mean diameter of 1 micron to 40 microns. The structured powder has a mean largest dimension of 1 mm to 250 mm and an internal porosity of 10 vol % to 50 vol %.
Claims20
A method of making a plurality of structured powder bodies, the method comprising:
- adding the powder to an agglomerator;
- adding water to the powder, wherein the agglomerator forms precursor structured powder bodies comprising the powder and the water;
- and
- aging the precursor structured powder bodies to evaporate residual water therefrom and to form the structured powder bodies.
A method of making structured powder bodies for extraction of CO2 from a gas, the method comprising:
- adding a powder comprising brucite to a rotary pelletizer, wherein magnesium hydroxide is 5 wt % to 90 wt % of the powder, and particles of the powder have a mean diameter of 1 micron to 40 microns;
- adding water to the powder in the rotary pelletizer, to form precursor structured powder bodies comprising the powder;
- and
- aging the precursor structured powder bodies to evaporate residual water therefrom and to form the structured powder bodies for extraction of CO2 from a gas, wherein the structured powder bodies have a spherical shape, a mean diameter of 1 mm to 30 mm, an internal porosity of 10 vol % to 50 vol %, and wherein the structured powder bodies are substantially free of added binders.
A method of making structured powder bodies for extraction of CO2 from a gas, the method comprising:
- adding a powder comprising brucite to a disc pelletizer, wherein magnesium hydroxide is 5 wt % to 90 wt % of the powder, particles of the powder have a d80 diameter of 5 microns to 10 microns, and the particles have a mean diameter of 1 micron to 10 microns;
- spraying water onto the powder in the disc pelletizer, to form precursor structured powder bodies comprising the powder;
- and
- aging the precursor structured powder bodies to evaporate residual water therefrom and to form the structured powder bodies for extraction of CO2 from a gas, wherein the structured powder bodies have a spherical shape, a mean diameter of 1 mm to 10 mm, pores homogeneously distributed throughout, an internal porosity of 10 vol % to 50 vol %, and a compressive strength of 50 kPa to 500 kPa, and wherein the structured powder bodies are substantially free of added binders.
Dependencies are inferred from the claim text.