Exhaust Gas Cleaning System
(Clean Marine EGCS)

Introduction

IMO Annex VI Regulation 14 requires limiting the sulfur content in marine fuel oil to 0.1% in Emission Control Areas (ECA) from 2015 and to 0.5% in all waters except ECA from 2020.

EGCS is the system allowed by Regulation 4 as an alternative method equivalent to the measure specified in Regulation 14.

EGCS purifies exhaust gas resulted from high-sulfur fuel oil to lower the sulfur concentration in it to the permitted level.

CLEAN MARINE is the pioneer and specialist of EGCS, the first manufacturer that installed multi-stream exhaust gas cleaning system onboard, and one of the two founders of EGCSA (Exhaust Gas Cleaning System Association).

Kashiwa, in partnership with CLEAN MARINE, is offering EGCS applicable to any types of both existing and newly-built ships.

System Features

・High-speed cyclone created by AVC (Advanced Vortex Chamber)

This is a vital and unique part of our EGC unit. This creates very small droplets, maximizing the gas-liquid interaction surface to enhance the efficiency of exhaust gas cleaning. The process doesn’t rely on any filling materials which could cause clogging on the gas stream line.

・ Integrated multi-streaming

Fans and a gas re-circulation mechanism are integrated in the EGC unit. This ensures that pressure at the meeting point of exhaust gas from various sources is maintained at ambient level irrespective of the amount of exhaust gas fed to the system. This feature allows all exhaust sources onboard including boilers to be served by one common EGC unit. The gas is sucked by the fans, eliminating the need to increase the back pressure at each source.

・NaOH supplement method

In normal operation, the system runs only with sea water in open loop mode. In brackish or low-alkaline waters, NaOH is automatically infused to maintain the alkalinity without switching to closed loop mode. The pH in the discharged water satisfies both IMO requirement and US EPA VGP standard in open loop mode.

・Monitoring system for safe operation

Dedicated software is developed so that the system onboard can be monitored and operated from an onshore office.