The most outstanding feature of the V2M9 steam boiler is the combustion
 The V2M9 boiler is a
vertical two-drum dropped-furnace boiler. The
fuel oil burners are located at each of the four corners of
the furnace and the burners are aligned to be tangential to a circle in the
centre of the furnace. This arrangement gives a rotary motion to the combustion
gases within the furnace, with improved turbulence and air/fuel mixing. This
lengthens the fuel-particle residence time in the boiler and allows combustion
to be completed before the gases pass into the convection generating bank and
superheaters.
In service the burners have demonstrated a capabillity of operating with about
one per cent excess air over a broad range of evaporation and this has
resulted in a reduction of fireside and heat recovery surface deposit.
V2M9 marine steam boiler,
water and steam flow diagram
Blue: the downcomers lead the water from the steam drum to
the water drum and the water walls headers.
Red and blue: the evaporation tubes and the waterwalls lead
the water and steam emulsion back to the steam drum.
Red: the steam passes through the superheater before it leaves
the boiler for the consumers.
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