C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 5/24 (2006.01) B01D 53/62 (2006.01) C01B 33/12 (2006.01) C01B 33/18 (2006.01) C01F 11/18 (2006.01)
Patent
CA 2687618
The invention provides a process for sequestration of carbon dioxide by mineral carbonation comprising the following steps: (a) converting a magnesium or calcium sheet silicate hydroxide into a magnesium or calcium ortho- or chain silicate by bringing the silicate hydroxide in direct or indirect heat-exchange contact with hot flue gas to obtain the silicate, silica, water and cooled flue gas; (b) contacting the silicate obtained in step (a) with carbon dioxide to convert the silicate into magnesium or calcium carbonate and silica.
La présente invention concerne un procédé de séquestration de dioxyde de carbone par carbonatation minérale comprenant les étapes suivantes : (a) la conversion d'un hydroxyde de silicate de magnésium ou de calcium en feuille en un silicate de magnésium ou de calcium ortho ou en chaîne en mettant l'hydroxyde de silicate en contact direct ou indirect d'échange thermique avec un gaz de combustion chaud pour obtenir le silicate, de la silice, de l'eau et du gaz de combustion refroidi ; (b) la mise en contact du silicate obtenu à l'étape (a) avec du dioxyde de carbone pour convertir le silicate en carbonate de magnésium ou de calcium et de la silice.
Geerlings Jacobus Johannes Cornelis
Wesker Evert
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Shell Internationale Research Maatschappij B.v.
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