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US 11,927,156 B2Granted
Apparatus for reducing greenhouse gas emission in vessel cooperated with exhaust gas recirculation and vessel including the same
AssigneeDaewoo Shipbuilding & Marine Engineering Co., Ltd.
InventorByung Tak Nam
Life of this patent
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Abstract
The present invention relates to an apparatus for reducing greenhouse gas emission in a vessel cooperated with exhaust gas recirculation (EGR), and a vessel including the same, in which NOX generation is reduced, which is the original purpose of EGR, while maintaining existing EGR, SOX as well as CO2, which is the representative greenhouse gas, are absorbed and converted into materials that do not affect environments, and the materials are discharged or stored as useful materials, thereby preventing corrosion of an engine and improving combustion efficiency.
Claims17
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;
- 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;
- and
- a turbo charger comprising:
- a turbine that is rotated by high-temperature and high-pressure exhaust gas supplied from the exhaust gas receiver;
- a compressor that is coupled to a rotation shaft of the turbine and rotated to compress the scavenge air and supply the compressed scavenge air to the scavenge air receiver;
- an air suction filter that is formed on a suction port side of the compressor to filter foreign matter;
- a scavenge air cooling module that cools the scavenge air supplied from the compressor to the scavenge air receiver;
- a first control valve that controls a flow rate of the exhaust gas supplied from the exhaust gas receiver to the turbine;
- and
- a second control valve that is formed in front of the first control valve to control a flow rate of the exhaust gas supplied to the cleaning unit.
10 more elements
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.
17 more elements
Dependencies are inferred from the claim text.