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公开(公告)号：US11273408B2
公开(公告)日：2022-03-15
申请号：US17053109
申请日：2019-05-08
Applicant: Mineral Carbonation International Pty Ltd
Inventor： Eric Miles Kennedy , Michael Stockenhuber , Timothy Kenilworth Oliver , Emad Benhelal , Mark Stuart Rayson , Geoffrey Frederick Brent
Abstract: An integrated process for carbon dioxide capture, sequestration and utilization, includes a) providing an aqueous slurry with a particulate solid including an activated magnesium silicate mineral; b) contacting a CO2-containing gas stream with the aqueous slurry to provide a slurry comprising a magnesium ion enriched carbonated aqueous liquid and a magnesium depleted solid residue; c) subjecting at least part of the magnesium depleted solid residue to a particle size classification process that separates the magnesium depleted solid residue into a fine particle size fraction and a coarse particle size fraction; d) subjecting the coarse particle size fraction to a particle size reduction process; e) providing an aqueous slurry comprising particle size reduced fraction from step d) and repeating step b), wherein this step e) does not include using fine particle size fraction from step c); and f) precipitating magnesium carbonate from magnesium ions dissolved in b) and e).
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公开(公告)号：US11833469B2
公开(公告)日：2023-12-05
申请号：US17053013
申请日：2019-05-08
Applicant: Mineral Carbonation International Pty Ltd
Inventor： Emad Benhelal , Geoffrey Frederick Brent , Eric Miles Kennedy , Timothy Kenilworth Oliver , Mark Stuart Rayson , Michael Stockenhuber
CPC classification number: B01D53/73 , B01D53/75 , B01D53/78 , B01D53/80 , B01J8/0015 , C01B33/128 , B01D2251/402 , B01D2257/504 , B01J2208/003 , B01J2208/00539
Abstract: 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; and
c) 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.-
公开(公告)号：US20210069641A1
公开(公告)日：2021-03-11
申请号：US17053109
申请日：2019-05-08
Applicant: Mineral Carbonation International Pty Ltd
Inventor： Eric Miles Kennedy , Michael Stockenhuber , Timothy Kenilworth Oliver , Emad Benhelal , Mark Stuart Rayson , Geoffrey Frederick Brent
Abstract: An integrated process for carbon dioxide capture, sequestration and utilization, includes a) providing an aqueous slurry with a particulate solid including an activated magnesium silicate mineral; b) contacting a CO2-containing gas stream with the aqueous slurry to provide a slurry comprising a magnesium ion enriched carbonated aqueous liquid and a magnesium depleted solid residue; c) subjecting at least part of the magnesium depleted solid residue to a particle size classification process that separates the magnesium depleted solid residue into a fine particle size fraction and a coarse particle size fraction; d) subjecting the coarse particle size fraction to a particle size reduction process; e) providing an aqueous slurry comprising particle size reduced fraction from step d) and repeating step b), wherein this step e) does not include using fine particle size fraction from step c); and f) precipitating magnesium carbonate from magnesium ions dissolved in b) and e).
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