Intro Regulations Design Equipment Installation Approach ROI Ship Approach Turn Key Retrofit Financing Services News Contact

Damen Green Solutions (DGS) in partnership with Damen Shiprepair & Conversion (DSC) is trailing a new technique for retrofitting scrubbers. Designated the Modular Approach, this new process is designed to cut the time that a vessel typically needs to spend in dock from two or more weeks to just a few days. This dramatic reduction in downtime, in combination with a more cost-efficient, certified scrubber, will be welcomed by ship owners and operators.

Scrubbing made simple and cost effective!

  • Cuts time spent in dock from weeks to days
  • Compact scrubber system
  • Easy installation
  • No use of any filters, so less maintenance/backpressure
  • No moving parts inside the scrubber, so less maintenance
  • Less seawater, so less E-load, so lower OPEX
  • Use of smaller pumps, so lower CAPEX
  • Use of smaller diameter of the GRE-piping, so lower CAPEX

    • SOx Scrubbing Regulations

    Future SOx regulations

    In October 2016, the IMO voted on a stricter, global Sulphur oxides limit, which will be implemented in 2020. It is known that Sulphur oxides (SOx) cause many deaths every year. Setting a global Sulphur oxides cap will have a positive effect on the air we breathe and save thousands of lives every year.

    Feasibility studies show that there is sufficient supply of required fuel oil and suitable abatement technologies to help all vessels comply with a global legislation.

    Current regulation

    In the autumn of 2008, the Marine Environment Protection Committee (MEPC) of the International Maritime Organization (IMO) agreed on the progressive reduction of maximum Sulphur content in the fuel used onboard. On January 1, 2015 the limit applicable in Emission Control Areas (ECA's) was reduced to 0.1%.

    Already on January 1, 2010, the EU implemented the requirement that ships may only burn fuel of 0.1% sulphur content or less when they are inside EU ports or within EU inland waterways.

    On July 1, 2010 this requirement was extended offshore into ECA's, which include the North Sea and the Baltic Sea.

    *ECA's include the Baltic and North seas, the English Channel and the US and Canadian coast and inland waters.

    *MARPOL Annex VI sets limits on Sulphur Oxide and Nitrogen Oxide emissions from the ship exhaust and prohibits deliberate emissions of ozone depleting substances. It also contains provisions allowing special SOx Emission Control Areas (SECAS) to be established with more stringent controls on sulphur emissions.

    Design

    Inside the scrubber the exhaust gas is cooled with seawater.

    1 The scrubber has an open tower structure

    Inside the scrubber there are no moving parts and there are no filters to clean.

    BENEFITS

  • There is no chance on a polluted packed filter-bed that needs maintenance.
  • The backpressure is very low so there is no need for a ventilator on top of the scrubber to compensate any high backpressure.
  • Inside the open scrubber the seawater droplets grow when they fall down. Small droplets capture the small particulates where big droplets capture the bigger particulates. Consequently you will find no soot on deck.

    • Design

    An AEC scrubber is always tailor-made, depending on space available.

    2 Tailored design

    A scrubber is always tailor-made, depending on space available.

    The patented design results in an optimal contact time between exhaust gases and seawater.

    BENEFITS

  • The most compact scrubber system which requires smaller pumps and less space on board.
  • It requires the lowest energy consumption.
  • Because of the low backpressure it works with all energies.

    • Design

    Optimal reaction between SOx and seawater.

    3 Why is our system so special?

    COOLING OF GASES:

    Inside the scrubber the exhaust gas is cooled with seawater.

    BENEFITS:

  • Optimal reaction between SOx and seawater.
  • Condensation of the exhaust gas causes a draw which results in very low backpressure.

    • Design

    Condensation of the exhaust gas causes a draw which results in very low backpressure.

    4 Why is our system so special?

    REMOVAL OF PARTICULATES:

    Inside the scrubber the sea droplets capture almost all particulates on their way down.

    BENEFITS:

  • The clean exhaust gases exit the scrubber, removed from particulates.

    • Design

    Inside the scrubber the sea droplets capture almost all particulates on their way down.

    5 Why is our system so special?

    REMOVAL OF SULPHUR:

    Inside the scrubber the sulphur in the exhaust gases dissolves in the seawater.

    BENEFITS:

  • The clean exhaust gases exit the scrubber, removed from Sulphur, following the IMO regulations.

    • Design

    With an AEC hybrid SOx scrubber on board you can continue to use HFO anywhere in the world following the IMO regulations.

    6 How easy is our system?

  • The scrubber installation is very easy to operate and runs automatically. In principle with a push of a button. It requires only four hours of training.
  • The system runs continuously without hardly any labor or maintenance.
  • The maintenance that is required is mostly on pumps and the separator. This type of maintenance is well known to personnel having already similar equipment on board.

    • Design

    Installation time and cost at the Yard

    7 We can save you money

    With a hybrid SOx scrubber on board you can continue to use HFO anywhere in the world following the IMO regulations.

    Because of the "SOx scrubbing made simple" philosophy you also save cost on:

  • Energy consumption
  • Low maintenance
  • Installation time and cost at the Yard

    • Design

    We offer a tailored design for open loop, closed loop or hybrid scrubber.

    8 TURN KEY RETROFITTING

    We understand that retrofitting a SOx scrubber system is not simple and that many factors have to be taken into account, such as:

  • Footprint & maintenance space
  • Power consumption, piping & tie-ins
  • Pressure drop & pump capacity
  • Integration of controls, internal transportation
  • Approvals and class requirements
  • CAPEX & OPEX
  • Return on Investment

    • Design

    9 Taking care of bottle necks

    SOx scrubbers are designed to comply to the most stringent regulations when using regular HFO fuels. With thousands of vessels needing to comply with the IMO sulphur regulation, the market will face practical bottle necks. How will you deal with equipment supply, the engineering capacity, availability of (yard) facilities, class capacity and other related issues? How will you ensure one time right?

    Damen can help you. Damen has over 85 years of expirience in shipbuilding and marine related conversions. We offer worldwide, comprehensive and cost effective one-stop-shop retrofit solutions. Either as a single turnkey project or as a step by step process - whichever best fits your operation and schedule.

    Design

    10 A staged approach - one time right

    Preparation is key for a successful retrofit project, one time right. Damen is following a well defined process which includes:

  • System selection: Open loop, closed loop or hybrid
  • On board survey, 3D scanning & basic engineering
  • Detail engineering
  • Purchasing & delivery of material packages
  • Full installation or supervision only
  • Commissioning, start-up and training

    • Closed loop scrubbers

     

    The closed loop is the most frequently used system. The seawater used in the process is continuously re-circulated. Detailed information can be found in our brochure.

    How does it work?

  • From the bottom of the scrubber exhaust gases are led through the scrubber to the top.
  • The seawater is fed into the top of the scrubber through nozzles. This results in an equally divided spray.
  • The outgoing exhaust gases are washed with seawater in the scrubber.
  • The seawater (process water) is continuously re-circulated.
  • The sulphur in the exhaust gases dissolves in the process water pumped from a circulation tank and binds with the caustic soda (NaOH) as a salt.
  • Based on conductivity level a certain amount of process water is drained out of the system automatically.
  • If needed clean seawater is then added to the process water tank and also NaOH, if needed.
  • The process water will be cleaned by the water treatment unit.
  • The remaining sludge is pumped to the sludge storage tank on the ship.
  • The process water with high conductivity level will be discharged directly back to sea while complying fully to the IMO regulations.
  • The pH, turbidity and concentration of PAH are constantly measured in accordance with MARPOL Annex VI resolution MEPC.184 (59).
  • The clean exhaust gases exit the scrubber, removed from sulphur and particulates, through a demister.

    • closed loop scrubbers

    Open loop scrubbers

     

    Instead of being re-used, the process water is discharged directly back to sea while complying fully to the IMO regulations. Optionally the seawater can be pumped through a water treatment system to remove all solids and oil. Detailed information can be found in our brochure.

    How does it work?

  • The seawater (process water) is NOT re-circulated but discharged back to sea.
  • The sulphur in the exhaust gases dissolves in the process water.
  • The process water removed from solids and oil will be discharged back to sea.
  • The pH, turbidity and concentration of PAH are constantly measured in accordance with MARPOL Annex VI resolution MEPC.184 (59).
  • The clean exhaust gases exit the scrubber, removed from sulphur and particles, through a demister.

    • open loop scrubbers

    Hybrid scrubbers

     

    The hybrid scrubber system can run in both closed or open loop mode. Water is either re-circulated or discharged back to sea.

    hybrid scrubbers

    Installation Approach

    Retrofit Сonventional approach

    Retrofit Сonventional approach

    Damen Modular approach

    Damen Modular approach

    Damen Semi Modular approach

    Damen Semi Modular approach

    Return Of Investment (ROI)

     

    Since the IMO approved SOx scrubber technology has been kept simple and the modular installation is used, this results in cost saving: Scrubbing made simple and cost effective.

    From several published sites (see chart) it can be concluded that price difference between high- and low-sulphur fuels are relatively huge. From 2020 this difference will reach the maximum, since there will not be sufficient low sulphur HFO available at that time.

    This price difference will definitely contribute to the Return of Investment of the total scrubber installation. To gain better insight information Damen offers the ROI-Calculator. This tool will help in getting the total fuel consumption clear in combination with the installation costs and consequently reflects the ROI period.

    Main advantage for the ship-owner is that costs are kept low while the quality of work can be guaranteed.

    To gain better insight information Damen offers the ROI-Calculator.

    Follow the ship approach

    Retrofit projects for scrubbers will have an impact on the existing vessel. Quite some systems need to be installed and commissioned.

    Retrofit projects for scrubbers will have an impact on the existing vessel. Quite some systems need to be installed and commissioned.
    The owner will always decide at which place in the world such a retrofit project will be executed. Damen simply will, in close cooperation with the owner, offer

    This Damen Supervisor can work together with the local yard management/personnel to execute the scrubber installation work.

    such installation work at that place. This can be reached by forwarding the required material package to this particular county/yard together with a Supervisor. This Damen Supervisor can work together with the local yard management/personnel to execute the scrubber installation work.

    Turn Key Retrofit

    Questionnaire

    Questionnaire

    Basic Quotation

    Basic Quotation

    Survey and basic engineering

    Survey and basic engineering

    Engineering

    Engineering

    Purchasing & Prefabrication

    Purchasing & Prefabrication

    Installation

    Installation

    Start Up & Commissioning

    Start Up & Commissioning

    Service

    Service

    Financing

    Damen customer finance

    Damen Customer Finance offers a wide range of financing arrangements. These are available for any type of vessel, equipment or related services, including the prefabricated shipbuilding kits supplied by the Damen Technical Cooperation department.

    Damen’s Customer Finance facilities are not just for privately-owned, small and medium-sized companies, we also assist government bodies such as coastguards, police and port authorities. Damen maintains relations with all Netherlands-based commercial banks, as well as with numerous banks abroad. As a major client of the Dutch Export Credit Agency, Atradius, Damen is highly experienced in arranging export loans with export credit insurance facilities.

    24/7 Spares & Services

    Damen Parts Services offers competitive prices, efficient and cost-effective delivery and short response times. With our years of experience we have established strong buying power and an extensive supplier network. By expanding our network of global service hubs, we are able to shorten our response times. Our service goes beyond fast part delivery; we also offer different replenishment solutions resulting in having parts in stock just before you need them.

    To minimise lifecycle costs and to improve a vessel’s performance, it’s crucial to have the right spare parts. Our Computerised Maintenance Management System (CMMS) allows stock control replenishment to be completely automated.

     

     

    To support our customers on a 24/7 basis, Damen has created an online parts store on our Services Portal www.damenservices.com. Here you can order directly from our online catalogue of spare parts. Our scope of supply is neither limited to Damen-vessels only, nor to the catalogue. If your required parts are not available online, we invite you to make online requests. Your services manager will gladly do what it takes to source the relevant component. With Damen as your partner you can experience the benefits of a one-stop-shop.

    News and Events

    News

    See all news

    Contact

    Whether it's a simple question or you need assistance with your Damen product, we believe great things can start with a small conversation.

    I'm interested in...