US Oil Major Places Order for Ultra-Efficient Tier III-Compliant Engines

By Peter Pospiech at February 28, 2013 04:56
Filed Under: Company News, drive systems, Fuels & Lubes, MAN Diesel&Turbo
Chevron Corporation orders G-type units with integrated exhaust gas recirculation G-type engines with integrated EGR system offer both high efficiency and low NOX emissions. MAN Diesel & Turbo has received an order from Chevron Corporation, the American multinational energy company, for two lightering newbuildings with each vessel to be powered by an MAN B&W 6G70ME-C9.2 prime mover. The newbuildings will each use an MAN Diesel & Turbo EGR (Exhaust Gas Recirculation) system to help their ME-C prime movers meet Tier III emission standards well in advance of requirements coming into effect. The engines will also retain the ability to switch to Tier II operation when outside the ECA (Environmental Control Area). MAN Diesel & Turbo states that the engine for the first vessel has a delivery date in December 2012, with the second due in early 2014 and the vessels due for delivery in 2014. Chevron has also ordered 1 × MAN 8L27/38 + 2 × MAN 7L21/31 gensets for each v... [More]

World’s First SCR NOx Removal System.

By Keith Henderson at June 23, 2011 08:05
Filed Under:
Completed in March of this year by the Oshima Shipbuilding Co., Ltd., Japan, the double hull bulk coal carrier MV Initial Salute is the first ship in service fitted with selective catalytic reduction of nitrogen oxides removal equipment. The 88,100 dwt ship with an LOA of 770 ft (235 m), is powered by a single slow speed, two stroke, MHI 6UEC60LSII rated at 11,000 kW at 105 rpm. Low-temperature exhaust gases below 570 degF (300 degC) produced by a slow speed two stroke engine were feared to cause contamination the catalysts. Improvements made to the equipment reduced the catalyst poisoning to a minimum level by suppressing the sulfur in the fuel oil to approximately 0.1 percent. The on board tests produced results that meet Tier III NOx emission controls stipulated by IMO. The results were so successful that it has been decided to extend the tests and collect more data over a longer period during normal operational service. [More]

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