Patent ID: 11927156
Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC F  B  C  Y | IPC B  F

Claim 16:
17. An apparatus for reducing greenhouse gas emission in a vessel cooperated with EGR, the apparatus comprising:
an exhaust gas receiver that temporarily stores exhaust gas exhausted from each cylinder of a vessel engine and removes pulsation;
a cleaning unit that removes and cleans SOX and soot by spraying cleaning water to the exhaust gas supplied from the exhaust gas receiver and cools the exhaust gas by circulating cooling water;
a CO2 absorbing unit that absorbs and removes CO2 by spraying an absorbent liquid to the exhaust gas having passed through the cleaning unit; and
a scavenge air receiver that temporarily stores the exhaust gas having passed through the CO2 absorbing unit, removes pulsation, mixes the exhaust gas with scavenge air, and supplies the mixed gas to each cylinder of the vessel engine,
wherein the CO2 absorbing unit comprises:
an absorbent liquid storage tank that stores the absorbent liquid;
one or more spray nozzles that spray the absorbent liquid;
one or more passages that converts CO2 into a certain material through a chemical reaction by contacting CO2 with the absorbent liquid;
an absorbent liquid spray pump that pumps the absorbent liquid to the one or more spray nozzles; and
a cooling module that circulates the cooling water to the one or more passages and cools heat generated by a CO2 absorption reaction,

wherein the one or more spray nozzles comprise an upper spray nozzle and a lower spray nozzle that spray the absorbent liquid downward,
wherein the one or more passages comprise an upper passage and a lower passage that convert CO2 into the certain material through a chemical reaction by contacting CO2 with the absorbent liquid,
wherein the absorbent liquid spray pump pumps the absorbent liquid to the upper spray nozzle and the lower spray nozzle,
wherein the cooling module cools heat generated by the CO2 absorption reaction by circulating the cooling water to the upper passage and the lower passage, and
wherein the CO2 absorbing unit further comprises:
a mist catcher that is formed in a curved multi-plate shape and removes moisture from the exhaust gas having passed through the lower passage; and
an exhaust gas recirculation fan that increases pressure of the exhaust gas, from which the moisture has been removed, and recirculates the exhaust gas to the scavenge air receiver.