The protection of the environment during the operation of inland and coastal ships

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The protection of the environment during the operation of inland and coastal ships

Listewnik, J.

Environmental pollution issues during the operation of inland and coastal ships and proposals of measures for improving the environmental protection were reviewed. A replacing gas oil with fuel gas in driving the ship motors and utilization both exhaust gases and oily ship waters in a contact heat exchanger were recommended. As advantages, the extinguishing sparks (increase in the safety of ship propulsion plant operation), the increasing the quality of oily waters and exhaust gases, due to the intensification of the purification process (heating of water, turbulent mixing, bubble boiling, and circulation multiplicity), the reduction of weight (overall dimension) indexes (by connecting 2 exhaust gas cleaning and ship water deoiling operations in one unit), as well as the simplification of the exhaust system of the ship engines were listed. For small passenger ships, the reduction of the overall dimensions of specific machinery units may allow increasing the ship gas storage capacity and increasing her running distance without refuelling. The proposed system of complex purification can be also applied on conventional ships with engines operating on liquid fuel.