Component set for sample gas conditioning unit for maritime applications

As part of the IAPP (International Air Pollution Prevention) efforts to reduce the emissions of CO2 and other pollutants, the international type of maritime shipping is also increasingly regulated. The reason for this is that the fuel for large ocean-going ships is predominantly high sulfur fuel oil (HSFO), which contributes significantly to global air pollution.

To eliminate these sources of pollution, the IMO (International Maritime Organization) began a long time ago to set binding limit values for air pollutants, like those for power plants on land. In addition, some coastal regions in America, Europe and Asia have issued even stricter emission limit values and prohibit ships that do not comply with these limit values from entering their coastal waters and ports. National authorities use so-called sniffers to monitor emissions from the air and / or at stationary points such as bridges and port facilities.

Since January first, in the year of 2020, a limit value of 0.50% applies to SO2 emissons in international waters and alimit value of 0.10% in coastal waters (ECAs = Emission Control Areas). The ECAs include e.g. also North and Baltic Sea.

In order to comply with the new limit values, the regulations provide shipping companies with different options. This includes the fundamental change in the type of fuel, e.g. from HSFO to MGO (Marine Gas Oil) or LNG (Liquid Natural Gas) as well as equipping or retrofitting ships with desulphurization systems, so-called SOx scrubbers.

For the shipping companies, these scrubbers have the advantage that they can continue to burn the HSFO, which is considerably cheaper in relation to MGO or LNG, in the existing drive machines with manageable investment and operating costs.

Similar to the desulphurization systems in the stationary power plant area, the scrubbers work as air washers. In the so-called open-loop process, the alkalinity of the sea water is used to neutralize the sulfur from the engine exhaust gases. The closed-loop and the dry porcess, as well as a combination of the two, are less common. These are closed circuits in which the exhaust gas is desulfurized using chemicals and minerals. In order to comply with the regulations and obtain the required certificates, all systems without exception must be equipped with suitable, also certified emission monitoring systems. These constantly measure compliance with the limit values for SO2 and CO2 and also provide the relevant documentation. This must be proven when entering ECAs and ports. The documentation also includes the proper disposal of the residues resulting from the desulfurization process.

As is common in almost all areas of the maritime shipping for insurance reasons, all components and devices involved in the scrubber system must be certified by an internationally recognized classification society. The acceptance tests are based on the special operating conditions on ships and the climatic ambient conditions. For example, the components must withstand vibrations of up to 4g, depending on the location, and their electromagnetic radiation must not interfere with any on-board systems or sensors.

Gas cooler series TC-Kit+

  • Compact design for installation in a gas cooling system
  • Effective heat release through external fans and cooling ribs
  • Version 24 V, optionally 230 V/115 V
  • Protection class IPxxC, with tight installation IP54
  • One gas path
  • Optimised heat exchanger model made from Duran glass or PVDF
  • Adjustable outlet dew point and alarm thresholds
  • Dew point stability 0.1 °C
  • Nominal capacity 110 kJ/h
  • MCD400 display module for separate installation
  • Option to connect moisture detector and analog output
  • Optional connection and control of the condensation and
    sample gas pump, as well as a heated line

Fine mesh filter AGF-PV-30

  • Used in DNV-GL and LR type-tested processing units
  • Compliance with requirements according to MARPOL MEPC.259 (68) of the IMO proven
  • Special design for use in high-vibration environments
  • Bühler Unique quick-release fastener
  • Very quick and easy filter changes without tools
  • Low dead volume
  • Variable wall mount included Option to drain condensate through GL25 screw connection in the filter glass (models AGF-PV-…-A)
  • Bypass connection in the filter head (G1/4), connection options for bypass, moisture detector or ventilation

Peristaltic condensate and metering pumps CPdouble

  • Used in DNV-GL and LR type-tested processing units
  • Compliance with requirements according to MARPOL MEPC.259 (68) of the IMO proven
  • Special design for use in high-vibration environments
  • Characteristics Built-in and housing version
  • Pumps available with single or double head
  • Standard CE mark
  • FM approval optional
  • Separate installation possible
  • Various flow rates Metering pumps with low flow rates
  • Easy to replace hoses
  • Various hose materials available for demanding applications
  • 115/230 V AC or 24 V DC
  • Reliable

Sample Gas Pump P1.1

  • Used in DNV-GL and LR type-tested processing units
  • Compliance with requirements according to MARPOL MEPC.259 (68) of the IMO proven
  • Special design for use in high-vibration environments
  • Easy to replace valves
  • Single-piece bellows Conveys sample gas with condensate Proven pump technology
  • Attractive price
  • Requires little space
  • Mounting accessories and screw connections sold separately
  • Housing version IP20
  • Optionally with built-in bypass valve
  • 24 V version available
  • 12 V version available upon request
  • FM C-US Approval (general purpose) optional

Flow Meter SM-6

  • Used in DNV-GL and LR type-tested processing units
  • Can be used in a system for compliance with MARPOL MEPC.259 (68) of the IMO
  • Special design for use in high-vibration environments
  • Corrosion-resistant materials
  • Easy installation
  • Easy measuring tube replacement
  • Limit switch optional