To simultaneously reduce the emissions of co2 of so2 in a combustion installation

摘要

Simultaneous reduction of carbon dioxide and sulfur dioxide emissions involves injecting into a hearth a calcium-based agent; subjecting the flue gases to intermediate cooling, causing them to transit via a first reactor, and putting them in contact with the other fraction of the absorbent that has not reacted with sulfur dioxide; and extracting solids contained in the flue gases. Simultaneous reduction of carbon dioxide (CO2) and sulfur dioxide (SO2) emissions produced by the combustion of carbon-containing matter in a hearth (1) involves injecting into the hearth a calcium-based agent (2), a fraction of which absorbs SO2 after decarbonization; subjecting the flue gases to intermediate cooling, causing them to transit via a first reactor (4), and putting them in contact with the other fraction of the absorbent that has not reacted with SO2 to capture CO2 from the flue gases by carbonization; and in a separator (6), extracting the solids contained in the flue gases output from the first reactor to subject them to heat treatment in a second reactor (11) to extract CO2 by decarbonization and to recycle the resulting regenerated CO2 absorbent to the first reactor.