Babcock-hitachi Kabushiki Kaisha

Tomoyuki Konishi

Takanori Nakamoto

Naoki Oda

Atsushi Katagawa

Hiroyuki Nosaka

Kouji Muramoto

Takuro Ueda

Nobuo Morimoto

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.

Exhaust gas treatment system with carbon dioxide chemical absorption equipment

In an absorbing tower including an absorption unit of relatively small diameter capable of absorption and removal by an absorbent slurry for exhaust gas purification and a tank unit of relatively large diameter for temporarily storing the absorbent slurry flowing down from the absorption unit, the tank unit and the absorption unit are joined together by a conical member. By disposing an entrance flue at the conical member, a distance from an upper portion of the conical member to a spray header is shortened, and a height of the absorbing tower can be reduced accordingly. By extending a front end of the entrance flue to the absorption unit into which droplets of the absorbent slurry fall, a high-temperature exhaust gas from a boiler, etc., that has passed through the entrance flue, is made to pass through a circumference of the conical member so that an inexpensive material can be used in the conical member.

Wet flue-gas desulfurization equipment

Growing community of inventors

Kure, Japan

Tomoyuki Konishi