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US 6,712,879 B2Granted
Carbon dioxide gas absorbent and carbon dioxide gas separating apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsMasahiro Kato, Sawako Yoshikawa, Kenji Essaki, Kazuaki Nakagawa
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Abstract
There is disclosed a carbon dioxide gas absorbent comprising lithium silicate, 0.5 mol % to 4.9 mol % of alkali carbonate per mole of the lithium silicate, and at least one element selected from the group consisting of aluminum, magnesium, calcium, iron, titanium and carbon.
Claims20
A carbon dioxide gas absorbent comprising:
- lithium silicate;
- 0.5 mol% to 4.9 mol% of alkali carbonate per mole of said lithium silicate;
- and at least one element selected from the group consisting of aluminum, magnesium, calcium, iron, titanium and carbon.
A carbon dioxide gas separating apparatus comprising:
- a reaction chamber having a carbon dioxide gas inlet and a product gas outlet;
- a carbon dioxide gas absorbent placed in said reaction chamber;
- said carbon dioxide gas absorbent comprising lithium silicate;
- 0.5 mol% to 4.9 mol% of alkali carbonate per mole of said lithium silicate;
- and at least one element selected from the group consisting of aluminum, magnesium, calcium, iron, titanium and carbon;
- and
- a heater heating said reaction chamber and disposed around said reaction chamber.
4 more elements
Dependencies are inferred from the claim text.