Integrated chemical process
First Claim
1. A process for the solidification of carbon dioxide by reaction of carbon dioxide with an activated alkali metal silicate feedstock or an activated alkaline earth metal silicate feedstock to form a corresponding alkali metal carbonate or alkaline earth metal carbonate,which process comprises direct thermal activation of an alkali metal silicate feedstock or alkaline earth metal silicate feedstock by combustion of fuel in a fuel fired furnace with the heat released by said combustion being directly applied to the alkali metal silicate feedstock or alkaline earth metal silicate feedstock, to produce an activated feedstock,then suspending the activated feedstock in a solvent slurry andreacting the activated feedstock with carbon dioxide to form the alkali metal carbonate or alkaline earth metal carbonate.
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Accused Products
Abstract
A mineral carbonation process, characterized in that the silicate feedstock is thermally activated by using heat generated from the combustion of fuel prior to reacting the activated slurry feedstock with carbon dioxide.
7 Citations
30 Claims
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1. A process for the solidification of carbon dioxide by reaction of carbon dioxide with an activated alkali metal silicate feedstock or an activated alkaline earth metal silicate feedstock to form a corresponding alkali metal carbonate or alkaline earth metal carbonate,
which process comprises direct thermal activation of an alkali metal silicate feedstock or alkaline earth metal silicate feedstock by combustion of fuel in a fuel fired furnace with the heat released by said combustion being directly applied to the alkali metal silicate feedstock or alkaline earth metal silicate feedstock, to produce an activated feedstock, then suspending the activated feedstock in a solvent slurry and reacting the activated feedstock with carbon dioxide to form the alkali metal carbonate or alkaline earth metal carbonate.
Specification