Integrated system for seawater scrubbing of marine exhaust gas

An integrated system for onboard scrubbing of a marine exhaust gas on a ship, comprising:

• a) a Venturi quencher having:
• i) two liquid inlets that feed a quench water to the Venturi quencher, wherein a first liquid inlet connects to a spent seawater recycle line that feeds the quench water that is comprised of a recycled water from a spent seawater sump of a rotating packed bed device and wherein a second liquid inlet connects to a fresh seawater supply line that feeds the quench water that comprises a fresh seawater;
• and
• ii) a hot exhaust gas entry that feeds the marine exhaust gas, having a temperature greater than 180° C., from an engine on the ship;
• and
• b) the rotating packed bed device, having:
• iii) a stationary gas distributor, placed along an outer circumference of the rotating packed bed device, connected to the Venturi quencher, wherein the stationary gas distributor is configured to receive a cooled two-phase mixture of the marine exhaust gas and the quench water from the Venturi quencher, disengage a quenched marine exhaust gas from the cooled two-phase mixture, and uniformly distribute the quenched marine exhaust gas along the outer circumference of the rotating packed bed device;
• and
• iv) a stationary liquid distributor, with multiple liquid rings, that is centrally positioned within the rotating packed bed device, wherein the multiple liquid rings are fitted with spray nozzles that spray a seawater along an inner circumference of the rotating packed bed device.