A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Calcium oxide or magnesium oxide production with alkali and sulfur dioxide intermediates
The present application pertains to processes producing oxides using a weak acid intermediate. In one embodiment a material comprising calcium carbonate is reacted with a solution comprising aqueous carboxylic acid to form a gas comprising carbon dioxide and a solution comprising aqueous calcium carboxylate. The solution comprising aqueous calcium carboxylate is reacted with sodium sulfate to form a solution comprising aqueous sodium carboxylate and a solid comprising calcium sulfate. The solution comprising aqueous sodium carboxylate is reacted with sulfur dioxide to form sodium sulfite and an aqueous carboxylic acid. The sodium sulfite is separated from said aqueous carboxylic acid and reacted to form a solid comprising calcium sulfite which is decomposed to form calcium oxide and sulfur dioxide.
Calcium oxide or magnesium oxide production with alkali and sulfur dioxide intermediates
The present application pertains to processes producing oxides using a weak acid intermediate. In one embodiment a material comprising calcium carbonate is reacted with a solution comprising aqueous carboxylic acid to form a gas comprising carbon dioxide and a solution comprising aqueous calcium carboxylate. The solution comprising aqueous calcium carboxylate is reacted with sodium sulfate to form a solution comprising aqueous sodium carboxylate and a solid comprising calcium sulfate. The solution comprising aqueous sodium carboxylate is reacted with sulfur dioxide to form sodium sulfite and an aqueous carboxylic acid. The sodium sulfite is separated from said aqueous carboxylic acid and reacted to form a solid comprising calcium sulfite which is decomposed to form calcium oxide and sulfur dioxide.
Calcium oxide or magnesium oxide production with alkali and sulfur dioxide intermediates
NOVEK ETHAN (author)
2024-12-24
Patent
Electronic Resource
English
IPC:
C07C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
,
Acyclische oder carbocyclische Verbindungen
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
Improved calcium oxide and magnesium oxide roasting shaft furnace
| European Patent Office | 2024
Preparation method of magnesium oxide-nickel oxide-titanium dioxide composite material
| European Patent Office | 2015
Calcium oxide production process and calcium oxide preparation device
| European Patent Office | 2021
| European Patent Office | 2021