Multistage mineral carbonation

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United States of America Patent

PATENT NO 11833469
APP PUB NO 20210370233A1
SERIAL NO

17053013

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Abstract

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The present invention provides an integrated process for carbon dioxide capture, sequestration and utilisation, which comprises:

    a) providing an aqueous slurry comprising an aqueous liquid and a particulate solid comprising an activated magnesium silicate mineral;b) in a dissolution stage, contacting a CO2-containing gas stream with the aqueous slurry at a first pressure to dissolve magnesium from the mineral to provide a slurry comprising a magnesium ion enriched carbonated aqueous liquid and a magnesium depleted solid residue; andc) in a precipitation stage, precipitating magnesium carbonate from magnesium ions dissolved in step b) by multiple successive stage-wise reductions in pressure, with each stage being at a lower pressure than the preceding stage;wherein each successive stage-wise reduction in pressure releases CO2 which is correspondingly stage-wise compressed and recycled back into the dissolution stage.

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Patent Owner(s)

Patent OwnerAddress
MINERAL CARBONATION INTERNATIONAL PTY LTDBRADDON ACT 2612

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benhelal, Emad Wallsend, AU 3 0
Brent, Geoffrey Frederick Valentine, AU 14 85
Kennedy, Eric Miles Newcastle, AU 10 7
Oliver, Timothy Kenilworth Adamstown Heights, AU 2 0
Rayson, Mark Stuart Bar Beach, AU 7 34
Stockenhuber, Michael Bolwarra Heights, AU 7 2

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