Solutions and Case Studies

Development story

Helping to solve the environmental problems of ships
with the world’s smallest SOx scrubber

What is a cyclone SOx scrubber for ships ?

Our cyclone SOx scrubber product for ships reduces the sulfur oxide (SOx) contained in the exhaust gas by spraying seawater onto the gas and causing a chemical reaction.

Fuji Electric was the first in the world to utilize a cyclone system for the internal structure of a scrubber for ships. Our patented structure enabled us to create the world’s smallest scrubber that is 50% of the size of the equipment of other companies and features a desulfurization rate of 98%.

An exhaust gas cleaning system (EGCS) for ships that combines a laser gas analyzer and helps to prevent air pollution.


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Manufacturing bringing technologies together to encourage creativity

Encouraging creativity is in Fuji Electric’s DNA.
This stems from our passionate desire to contribute to society and environmental preservation by creating new technologies and products.

Fuji Electric’s new challenge is to apply the technologies it has cultivated on land to ships at sea.

Takashi Inui,
In charge of development
Power Electronics Systems Industry

“Saving the global environment was our dream, and we wanted to achieve it through manufacturing.”

Fuji Electric succeeded in developing a compact, high-efficiency SOx scrubber for ships. What made this technology so innovative ?

Kuniyuki Takahashi,
In charge of development
Corporate R&D Headquarters

“There’s a trade-off between making a scrubber smaller and more efficient to remove the SOx. So frankly speaking, I thought it would be difficult to achieve both at once. The scrubber has to separate the exhaust gas from the wash water while it is desulfurizing the gas. We focused on the cyclone technology that we had developed for our fuel cells.”

However, this technology lowered the desulfurization performance. We overcame this disadvantage by improvising the internal design of the structure of the scrubber.

Kazuki Hayashi,
In charge of manufacturing
Chiba Factory

“This was the first time we had to deal with something that would be used on board a ship. As these were new materials, we didn’t know how to weld them or how difficult they would be to process. We gathered together expertise from others throughout the company, and took on the challenge through trial and error.”

Kenji Watanabe,
In charge of manufacturing
Chiba Factory

“It was difficult to figure out how to do the welding to make full use of the properties and corrosion resistance of the materials.
But our Chiba Factory had many years of experience in welding, so we overcame the issues one at a time based on the experience and skills cultivated here.”

Passion leading to a common goal

“Fuji Electric has employees with a variety of skills and extensive knowledge throughout the company. And these employees came together enthusiastically to aim for a common goal. I feel very strongly that it’s this passion that is Fuji Electric’s DNA.”

At Fuji Electric, we have striven in our pursuit of innovation in the energy and environmental technologies that we have built up over the many years since our founding in 1923, and we will continue to contribute to the realization of a safe, secure, and sustainable society.

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