Exhaust gas treatment system with carbon dioxide chemical absorption equipment

Abstract

An object of the present invention is to provide an exhaust gas treatment system that effectively use heat recovered from an exhaust gas without any limitation in a COchemical absorption equipment that requires enormous heat energy, and thus enabling reduction in running cost of the COchemical absorption equipment. Disclosed is an exhaust gas treatment system with a COchemical absorption equipment, which is provided with a heat recovery device that recovers exhaust heat from an exhaust gas discharged from a boiler; and a COchemical absorption equipment that absorbs COin the exhaust gas by bringing the exhaust gas into contact with an amine absorbing solution in a carbon dioxide (CO) absorption column, heats the absorbing solution that have absorbed COthereby releasing COinto a COregeneration column, heats the absorbing solution after release of COvia a reboiler, and then circulates the absorbing solution in a COabsorption column; the exhaust gas treatment system comprising a heat exchange unit that applies heat recovered by the heat recovery device to the absorbing solution that is delivered to the reboiler from the COregeneration column of the COchemical absorption equipment.