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Tue 23 Mar 2010, 14:53 GMT

MOL develops diesel particulate filter


Diesel particulate filter for vessels using heavy fuel oil is said to have removed over 80 percent of particulate matter.

Mitsui O.S.K. Lines, Ltd. has today announced the joint development, along with Akasaka Diesels Limited, of a diesel particulate filter (DPF) for vessels that use marine heavy fuel oil.

Tests are said to have showed that the device removed more than 80% of particulate matter (PM) from diesel emissions.

During testing, a DPF was installed on the main engine of an MOL Group-operated coastal ferry, the Sunflower Kogane. The test marked the first successful use of a self-regenerating DPF on a large vessel using marine heavy fuel oil.

The Sunflower Kogane (9,710 gt, main engine: 9,267kw) is operated by The Diamond Ferry Co., Ltd., an MOL Group company.

The DPF includes filters made of silicon carbide ceramic fibers, which remove PM from the exhaust. An internal heating system automatically burns off accumulated PM in the filter to eliminate clogging. This eliminates the necessity for cleaning by seafarers and allows the filter to be used continuously.

According to MOL, installation of the new DPF will potentially reduce soot emissions from vessels on ocean cargo routes as well as those entering and leaving ports and operating their engines while at berth, thus helping curtail possible effects of exhaust emissions.

Following the success of the experiment, MOL and Akasaka Diesels said they will further upgrade the DPF to ready the device for practical installation on diesel main engines and auxiliary engines of large-scale ocean-going vessels.

MOL, one of the world's top shipping companies, has a strong track record in environmental innovation. The company says it will continue with strategy to develop environmentally-friendly technologies.

About Akasaka Diesels Limited

Akasaka Diesels Limited is a marine diesel engine manufacturer founded in 1910. It produces and sells independently developed four-cycle engines and two-cycle engines under license from Mitsubishi Heavy Industries Co., Ltd. Its accumulated production totals around 10,000 units.

Ferry   MOL   Japan 
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