Processes for producing alkali compounds using acid gas

Abstract

The present application pertains in one embodiment to a process which reacts a component comprising an alkaline-earth cation− weak acid anion with a component comprising an acid to form a component comprising an alkaline-earth cation− acid anion and a component comprising a weak acid derivative. At least a portion of the formed alkaline-earth cation− acid anion is reacted with a component comprising an alkali sulfate to form a component comprising an alkali cation− acid anion and a component comprising an alkaline-earth sulfate. At least a portion of a component comprising carbon dioxide is dissolved in a solution comprising at least a portion of the component comprising an alkali cation− acid anion. At least a portion of the acid is separated from at least a portion of the alkali in the presence of carbon dioxide and the presence of a membrane to form an alkali cation− carbon dioxide species anion.

Dependencies are inferred from the claim text.