Coldharbour - Specialising In Balast Water Treatment, Inert Gas Systems, Inert Gas Generators, Domestic Water Modules and Marine Jet Pumps.
Flue Gas Systems
Flue Gas Systems (FGS)
These systems are generally used on crude oil tankships where a higher quality inert gas is not required for the unrefined cargo product. The gas in this case is available as a by-product of boiler combustion and is taken from the ships boiler uptake. Typically a range between 4% to 5% O2 content with some soot content dependent upon flue gas quality.
A typical Flue Gas System as shown here includes six major component parts, each having special features.
Scrubber Tower*
Combining a high energy venturi scrubber with a packed tower scrubber enables high efficiency particulate removal, cool quenching, cleaning and final demisting of boiler flue gases.
*except in combination FGS/IGG applications
Gas Fans
Single stage centrifugal inert gas fans are used. The fan impellers are dynamically balanced and manufactured in corrosion resistant material. The casings are internally glass flake coated to reduce maintenance.
Deck Water Seal
“Wet Type” design with an external seal pipe ensuring added safety. Water is displaced during normal gas flow forming a semi wet seal. Entrained water is expelled by swirling the gas in the vessel and passing it through an integral demister.
Pressure/Vacuum Breaker
Providing final protection by releasing excessive pressure or vacuum from the cargo tanks ensures that the tank design conditions cannot be exceeded. The design is totally fail-safe
Valves
Gas delivery and control valves are normally of the butterfly type with bonded rubber linings and corrosion resistant discs and shafts. Where remotely controlled, these valves use a double acting actuators. The boiler uptake valves are of the butterfly wafer pattern type suitable for high temperature with metal seating. These are normally pneumatically operated and fitted with limit switches for remote control and indications.
Control System
Utilises a programmable logic controller to give the required functions of control along with designated selective acceptance of alarms. The instrumentation and control panels are generally located in the engine room, cargo room and bridge. Customers special requirements can be incorporated.
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Product Enquiry Forms
Send us your requirements using our Flue Gas System Enquiry Form |
All Coldharbour systems are designed to be user friendly with absolute minimum maintenance and consumable parts. Particular care has been taken in the selection of component materials to eliminate corrosion wherever possible.
Full after sales services are available from Coldharbour Engineers for commissioning, maintenance and any technical backup. Continual spare parts availability is assured.