Recovering a caustic solution via calcium carbonate crystal aggregates

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United States of America Patent

PATENT NO 8728428
SERIAL NO

13801681

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Abstract

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Techniques for converting a portion of a carbonate to hydroxide include receiving an alkaline carbonate solution that includes between 0.1M (moles per liter of solution) to 4.0M hydroxide and between 0.1M to 4.1M carbonate; reacting, in a slaking process, quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)2); and reacting the Ca(OH)2 slurry and the alkaline carbonate solution to grow calcium carbonate (CaCO3) crystal aggregates of 0.0005 mm3 to 5 mm3 in volume in a fluidized-bed reactive crystallizer.

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Patent Owner(s)

Patent OwnerAddress
CARBON ENGINEERING ULC37322 GALBRAITH ROAD BOX 187 SQUAMISH V8B 0A2

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Heidel, Kenton Robert Calgary, CA 24 97
Kainth, Arvinder Pal Singh Calgary, CA 14 112
Keith, David William Calgary, CA 16 149
Ritchie, Jane Anne Calgary, CA 12 58

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