PROCESS FOR CAPTURING CO2 AND SO2

Described is a COand SOcapture method comprising the following steps: a) introducing an aqueous stream of a hydroxide of an alkali or alkaline-earth metal and another gas stream of COinto a bubble column purifier/reactor in order to form a carbonate of the alkali or alkaline-earth metal; b) introduc...

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Main Authors MORALES FLÓREZ, Victor, ESQUIVIAS FEDRIANI, Luis María, SANTOS SÁNCHEZ, Alberto, CÁRDENAS ESCUDERO, Cristian
Format Patent
LanguageEnglish
French
German
Published 09.10.2019
Subjects
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:Described is a COand SOcapture method comprising the following steps: a) introducing an aqueous stream of a hydroxide of an alkali or alkaline-earth metal and another gas stream of COinto a bubble column purifier/reactor in order to form a carbonate of the alkali or alkaline-earth metal; b) introducing the carbonate of the alkali or alkaline-earth metal into a bubble column purifier/reactor, into which a stream of a gas mixture of COand SOis introduced in order to form sulphite of an alkali or alkaline-earth metal and carbon dioxide; c) transforming the sulphite from step (b) into sulphate of said metal by means of oxidation with air; and d) re-circulating the unreacted COproduced during step (b) by reacting the slurry with the SO, in the reactor from step (a).
Bibliography:Application Number: EP20190176863