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United States of America Patent

PATENT NO 10662546
APP PUB NO 20160032481A1
SERIAL NO

14782024

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention relates to a particularly energy efficient, two-step method and to a system for the continuous or semicontinuous production of crystalline calcium carbonate (precipitated calcium carbonate, PCC) by reacting calcium hydroxide with CO2, the calcium hydroxide being lime milk. In the first step of the germination, the CO2-source is exclusively flue gas having a CO2-content of between 4-25% . In the second step, the complete conversion of the lime milk reacted in the first step to a maximum of 90%, preferably between 10-90%, is carried out exclusively using a rich gas which comprises 30-99% CO2, preferably using biogas.

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Patent Owner(s)

Patent OwnerAddress
PAPIERFABRIK AUGUST KOEHLER SE77704 OBERKIRCH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Follmann, Heinrich Berlin, DE 4 29
Hillbrecht, Berit Dahlwitz-Hoppegarten, DE 2 1

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