SOx cleaning technology
Reduce your ship’s Sulphur Oxides emission below the strictest International Maritime Organization’s (IMO) requirements by installing a Yara SOx scrubber system.
What is SOx?
The burning of fossil fuel in diesel engines creates toxic SOx – Sulphur Oxides – that can disrupt the world’s eco systems, be damaging to the marine environment specifically and also cause harm to human health. SOx emissions can cause premature mortality, heart attack, lung disease, asthma and other respiratory symptoms.
Ships are heavy emitters of SOx. Yara delivers exhaust gas cleaning technology to help ship-owners reduce the SOx emission levels according to the IMO’s SOx regulations.
SOx reduction with scrubber technology
By installing an exhaust gas cleaning system such as a SOx scrubber, the ship-owner can operate on cheap, heavy fuel oil and still be compliant with all the International Maritime Organization’s (IMO) SOx emission regulations.
From 2020, a global 0,5% SOx cap will apply worldwide and the ECA areas around the world are expected to grow and expand in the years to come. The demand for exhaust gas cleaning technology, such as the SOx scrubber, is expected to increase in pace with the tightened SOx regulations.
How does the SOx scrubber work?
The scrubber technology works by passing the dirty exhaust gas stream created by the engine through several chambers that contain a carefully generated ‘scrubbing cloud’ of water. Inside these chambers, a high number of droplets rapidly capture the errant particles in the process stream. Seawater is used to cool the scrubber water in circulation. The automation system during commissioning is optimized to the lowest possibly energy consumption and keeps the emissions within stipulated limits, regardless of Sulphur content in the fuel, engine load or water alkalinity.
A scrubber system can operate in different loops
A scrubber system can operate in different modes or loops, open, closed and hybrid systems. Yara Marine Technologies has extensive experience in all three product categories.
When the scrubber system works in closed loop, an alkali, such as Caustic Soda (NaOH) or Magnesium Oxide (MgO) is needed to clean the washwater that is held in the washwater tank. In open loop there is no need for water treatment as the natural alkalinity in the seawater neutralizes the acid. Wash water is continuously monitored at the inlet and outlet to make sure it is in line with the relevant regulations from IMO before it is discharged into the sea with no harm to the environment.
Why choose Yara´s SOx scrubber for SOx cleaning?
Installing a Yara SOx scrubber is the most economical and efficient way to achieve full compliance with both current and future emission regulations from the International Maritime Organization (IMO).
Our scrubbers are tailor made to any engine size and vessel, have a very small footprint and have flexible dimensions to accommodate for the specific vessel’s space availability
Yara Marine Technologies’ scrubbers are produced in high quality, anti-corrosion steel giving superior lifetime and option of extended warranties.
For any service needed, -whatever, whenever – our experienced Yara service team is ready to assist you!
- Yara SOx scrubber can clean the exhaust gas down to strictest o,1% ECA requirements
- More than 100 systems already successfully installed since 2011
- Our inline scrubber can handle any Sulphur content in the fuel up to 3,5%
- Yara Marine Technologies offers scrubbers that can operate in both open and closed loop as well as hybrid scrubbers that can automatically transit between open and closed loop depending on the specific geographical regulation.
- Yara is the only abatement company that can offer scrubber design that allows for both Magnesium Oxide (MgO) and Caustic Soda (NaOH) as alkali in closed loop. We normally recommend to use MgO because:
- MgO as alkali is completely harmless and represents no health or safety risk onboard.
- MgO is supplied as a powder and is easily available all across the globe.
- MgO as alkali also requires less storage space than NaOH as the MgO consumption is only ¼ of the corresponding NaOH needed.
For those applications where Caustic Soda is a more suitable alkali, Yara will design the scrubber accordingly.
- For retrofits on sailing vessels, Yara Marine Technologies scrubbers can be fitted while in operation and no valuable commercial sailing time is lost.
- We fit our scrubbers with high grade stainless steel and we can offer extended guarantees against corrosion
- Because our in-line scrubbers have no moving parts or bypass, they are easily installed in the funnel area.
- The inline scrubber system only requires the same space as the silencer (approximately) that it replaces, simplifying installation.
According to the International Maritime Organization’s (IMO) maritime laws, ships are required to reduce their Sulphur Oxides (SOx) emission in certain waters in the world. These areas are called emission control areas (ECA) or SOx emission control areas (SECA). From 2015 the allowable SOx emission in these areas can not exceed 0,1%.
Authorities around the world are addressing the negative effects from SOx emissions as it’s a known cause of concern for both human health and the disruption of the world’s eco systems. In October 2016, the IMO decided to further tighten the regulations on SOx emissions, and from 2020 a global 0,5% limit will take effect. The ECA emission regulations will remain unchanged on 0,1%.
Feasibility studies have shown that there is sufficient supply of required fuel oil and suitable exhaust gas cleaning technologies (SOx scrubbers) to help all vessels comply with the global legislation.
Yara Marine Technologies has installed over 100 inline SOx scrubbers and continuous to do so. Each scrubber can handle Sulphur content in the fuel up to 3,5% and clean it down to the strictest future and current ECA requirements. Installing a Yara Marine Technologies’ SOx scrubber will therefor make your vessel both ECA and 2020 compliant.