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1. WO2019213704 - MINERAL CARBONATION

Publication Number WO/2019/213704
Publication Date 14.11.2019
International Application No. PCT/AU2019/050423
International Filing Date 08.05.2019
IPC
B01D 53/62 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
62Carbon oxides
B01D 53/80 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
80Semi-solid phase processes, i.e. by using slurries
B01D 53/78 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
77Liquid phase processes
78with gas-liquid contact
C01F 5/24 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
5Compounds of magnesium
24Magnesium carbonates
CPC
B01D 2251/402
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
40Alkaline earth metal or magnesium compounds
402of magnesium
B01D 2257/504
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2257Components to be removed
50Carbon oxides
504Carbon dioxide
B01D 2258/0283
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2258Sources of waste gases
02Other waste gases
0283Flue gases
B01D 2259/128
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2259Type of treatment
12Methods and means for introducing reactants
128Solid reactants
B01D 53/62
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
46Removing components of defined structure
62Carbon oxides
B01D 53/75
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
75Multi-step processes
Applicants
  • MINERAL CARBONATION INTERNATIONAL PTY LTD [AU]/[AU]
Inventors
  • BENHELAL, Emad
  • BRENT, Geoffrey Frederick
  • KENNEDY, Eric Miles
  • OLIVER, Timothy Kenilworth
  • RAYSON, Mark Stuart
  • STOCKENHUBER, Michael
Agents
  • DAVIES COLLISON CAVE PTY LTD
Priority Data
201890156108.05.2018AU
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MINERAL CARBONATION
(FR) CARBONATATION MINÉRALE
Abstract
(EN) 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 to dissolve magnesium from the mineral 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 from step b) 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 at least part of the coarse particle size fraction from step c) to a particle size reduction process to provide a particle size reduced fraction; 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) in a precipitation stage, precipitating magnesium carbonate from magnesium ions dissolved in b) and e).
(FR) La présente invention concerne un processus intégré de capture, de séquestration et d'utilisation de dioxyde de carbone, qui comprend : a) la fourniture d'une suspension aqueuse comprenant un liquide aqueux et un solide particulaire comprenant un minéral de silicate de magnésium activé; b) dans une étape de dissolution, la mise en contact d'un courant gazeux contenant du CO2 avec la suspension aqueuse pour dissoudre le magnésium à partir du minéral pour obtenir une suspension comprenant un liquide aqueux carbonaté enrichi en ions magnésium et un résidu solide appauvri en magnésium; c) la soumission d'au moins une partie du résidu solide appauvri en magnésium de l'étape b) à un processus de classification de taille de particule qui sépare le résidu solide appauvri en magnésium en une fraction de taille de particule fine et une fraction de taille de particule grossière; d) la soumission d'au moins une partie de la fraction de taille de particule grossière de l'étape c) à un processus de réduction de taille de particule pour fournir une fraction à taille réduite de particule; e) la fourniture d'une suspension aqueuse comprenant une fraction réduite de taille de particule issue de l'étape d) et répéter l'étape b), cette étape e) ne comprenant pas l'utilisation d'une fraction de taille de particule fine issue de l'étape c); et f) dans une étape de précipitation, la précipitation du carbonate de magnésium à partir d'ions magnésium dissous dans b) et e).
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