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Discuss Advanced computed based fuel cleaning systems and how with the latest emission control requirements, storage & purification of marine fuel oils on board has become a challenge for CE’s.

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  • Discuss Advanced computed based fuel cleaning systems and how with the latest emission control requirements, storage & purification of marine fuel oils on board has become a challenge for CE’s.

    Discuss Advanced computed based fuel cleaning systems and how with the latest emission control requirements, storage & purification of marine fuel oils on board has become a challenge for CE’s.
    Last edited by mohit; 12-21-2017, 09:39 AM.

  • #2
    Fuel oils with densities above 991 kg/m3 at 15°C are available on the market and can be purified, for example, with the ALCAP system, which allows fuel oil densities up

    to 1010 kg/m3 at 15°C. Fuel oil is continuously fed to the separator. The oil flow is not interrupted when sludge is discharged


    The ALCAP operates as a clarifier. Clean oil is continuously discharged from the clean oil outlet. Separated sludge and water accumulate at the periphery of the bowl.

    Sludge (and water) is discharged after a pre-set time.


    If separated water approaches the disc stack (before the pre-set time interval between two sludge discharges is reached), some droplets of water start to escape with the

    cleaned oil. A water transducer, installed in the clean oil outlet, immediately senses the small increase of the water content in the clean oil.


    A signal from the water transducer is transmitted to a control unit, and changes in water content are measured

    The increased water content in the cleaned oil is the sign of reduced separation efficiency for not only water but for the removal of solid particles, as well. When the

    water content in the cleaned oil reaches the pre-set trigger point, the control unit will initiate an automatic discharge of the water that has accumulated in the bowl

    through the water drain valve


    In summary, water is discharged either with the sludge at the periphery of the bowl:

    i. separated water does not reach the disc stack in the pre-set time between sludge discharges, or through the water drain valve

    ii. Separated water reaches the disc stack before the pre-set time between sludge discharges.

    Advanced Computer-Based Technologies used for Cat Fines along with removal of water and sludge

    The second issue that has to be resolved is related to cat fines. Globally the ISO8217 limits this to 60 ppm m/m and anything greater than 10 to 15 entering the engines is

    in excess; this also does not take into account the size of the Cat Fine in microns. Reduction of these can be done onboard by proper settling, filtering and purification. In

    the settling process, there will be a considerable reduction in the ppm of cat fines, but this largely depends on the duration given for settling. Sometime continuous

    running will not give sufficient time for the same. Plus during bad weather, the settled fines eventually mix up and enter the system.


    The next line of defence is the purification system. New systems designed for the monitoring of cat fines (at the outlet of the purifier) have been developed and are

    being installed nowadays. Some of them are by Catguard from NanoNord, GEA Westfalia Separator CatFineMaster etc.


    Features of GEA Westfalia Separator

    • Hot separation = maximum separation efficiency

    • Variable flow = maximum separation efficiency and energy saving

    • GEA Westfalia Separator IO = one touch operation avoids operating mistakes and provides efficiency programs

    • CFR = optimized separator size comparison based on profound regulations

    • GEA Westfalia Separator unitrolplus = flexible adjustment to difficult and changing conditions of the in-feed

    • GEA Westfalia Separator hydrostop = virtually oil-free discharge (no product loss)

    The aim is to achieve Maximum Cat Fine Removal with Cat Fine Content < 5 ppm. No Cat Fines > 3 μm. Such a Purifier will be best suited for counter not only water and

    dirt but also help remove cat fines.


    Two parameters are decisive when it comes to achieving maximum removal of cat fines and other unwanted solids in fuels: separation temperature and throughput

    capacity. GEA Westfalia Separator CatFineMaster has been engineered to operate with both parameters at an optimum performance level in every situation.


    Hot separation

    Increasing temperature effects lower viscosity and density in fluids. According to Stokes’ Law, the high temp. Increases the settling velocity in a separator. Separating

    even smaller particles that would otherwise remain in the fuel is much easier. The design of the CatFine Master has been optimized for hot separation up to 110 °C to

    exploit this effect to the greatest possible extent, for maximum performance and reliability in cat fin removal.


    Variable flow

    Lower flow rates of fuel in the separator unit mean longer separating times, which is another effective means to achieve higher separation efficiency for maximum

    removal of particles. To make the most of this option, the CatFine Master features a unique and highly innovative control function to adapt the feed to the amount of

    fuel required for engine operation at a given time.


    This means the flow rate will always be at the optimum regarding separation efficiency and energy savings.

    Accountable CFR (Certified Flow Rate) configuration

    GEA Westfalia Separator Group delivers the separator unit precisely tailored to the machine dimensions the customer needs, based on a fully accountable and easy to-

    compare manner on the CWA 15375 standard.


    The heart of the GEA Westfalia Separator CatFineMaster is a modern self-cleaning etype separator. The built-in patented GEA Westfalia Separator unitrolplus sensor

    system automatically monitors for water and solids content to provide for maximum fuel quality – even under the most extreme conditions at sea.


    The system thinks for itself and can even be operated without supervision, even eliminating manual setting errors. The water content is checked and controlled by the

    Water Monitoring System (WMS). The Sludge Space Monitoring System (SMS) checks the solids space for separated particles such as cat fines, sand, abrasives and rust.


    Automatic bowl ejection at precisely defined volumes minimizes oil losses. The bowl’s hydraulic system GEA Westfalia Separator hydrostop ensures extremely short

    ejection times with maximum outlet diameter and minimum oil losses. The solids are discharged highly concentrated. Disposal is made simple to reduce costs, with

    environmental considerations fully taken into account.
    Last edited by deepak; 12-20-2017, 11:54 AM.

    Comment


    • #3
      Computed based cleaning system and purification of marine fuel oils on board is really a big challenge. For proper cleaning, chemicals are used. I was looking a company that provides a wide range of chemicals used in marine industry to clean and purify oil.
      RX Marine was established in 1996 in Mumbai, India; as a chemical manufacturing company catering exclusively to the needs of the marine industry. In a short span of 12 years the company has established itself as one of the leading wholesale suppliers of a wide range of chemicals for - Marine industry internationally - and other local industires and plants. Our client list bears testimony to this. The RXSOL policy has its foundations on two pillars of strength - a continuous investment in research and development to deliver premium quality products and a commitment to service.

      Degreaser


      Thanks!

      Alfrad Axel

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