Exhaust Gas Scrubbers

By Keith Henderson at August 16, 2010 08:29
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The expansion of Emission Control Areas (ECA) in North American and European waters leaves ship owners using HFO with little choice other than to use a more expensive low sulfur HFO, change to MDO completely or use a dual fuel arrangement. The latter not only necessitates installing additional tanks and fuel handling equipment but also requires careful change over procedures to be followed every single time to avoid potential engine problems that can be very severe. An area that a few operators are pioneering is the use of exhaust seawater scrubbers. Hamworthy Krystallon produce a Seawater Scrubber that is designed to operate on a 3.5 per cent S HFO 380 fuel while complying with the EU in-port and MARPOL Annex VI requirement of a 0.1 per cent sulfur fuel. Hamworthy Krystallon early orders from Italian owner have been followed this month by an order to equip four 45,000 dwt ro-ro new builds at Daewoo. Sembawang Shipyard (SSPL), Singapore are interested in a potential retrofit project for seawater scrubbers. Switching to low sulfur fuels will create supply problems according to he International Petroleum Industry Environmental Conservation Association


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