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Alfa Laval Aalborg KBE
Rotary cup burner
for heavy fuel oil or diesel oil
Electronic air/fuel ratio control
Aalborg KBE 150 – Aalborg KBE 1300
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General
The Aalborg KBE (formerly KBE™) rotary cup burner is an
optimized, standardized design
of Aalborg Industries’ wellproven
Aalborg KB burner. With the
electronic air/fuel ratio control, an extremely precise combustion control is achieved. The
Aalborg KBE burner is compact and low weight, and the control system user-friendly and safe.
| Capacity range: |
0.3 – 0.97 MWe |
| |
150–1,300 kg/h |
Description
The Aalborg KBE rotary cup burner is an optimized
version of the Aalborg KB (formerly KB™) burner based
on well-proven technology. It meets the
requirements of stable operation and
easy maintenance. Born with an electronic
air/fuel ratio control, a very exact
control of the Aalborg KBE burner is possible,
and its ignition point enables the most
dependable ignition. The Aalborg KBE burner
comes with an improved control panel design, a logical positioning of connection points, and is simple to operate.
The Aalborg KBE burner also has a 5-15% lower
power consumption than the Aalborg KBE (relative
to burner size). The low weight Aalborg KBE burner can be bolted or welded onto
the boiler and is designed to sustain
shipment well due to its sleek design.
The working principle of rotary cup
burners is based on atomizing by centrifugal
force. The atomizing cup is driven
at high speed via a heavy-duty belt
drive.
The oil is gently positioned at low
pressure into the spinning cup where
gradually, and forced by the centrifugal action of the cup, it moves forward until it is thrown off the cup rim as a very
fine, uniform film.
The high-velocity primary air discharged
around the cup strikes the oil film,
breaks it up and converts it into a mist of fine particles, which are introduced into the combustion zone and burner.
The secondary air necessary for complete
combustion is supplied by a
forced-draught fan through the windbox
and burner air register. A safety
device built into the Aalborg KBE prevents
wrong adjustment of tertiary air that
may cause damage to the swirler and
cup.
Heavy fuel oil fired rotary cup burner
Normally, atomizing takes place at
a viscosity of approx. 45 cSt., which
ensures a particle size small enough to
burn quickly and completely.
The Aalborg KBE burner is a typical rotary cup
burner with combustion air according
to the forced draught fan location principle.
For Aalborg KBE 150-750 the fan is mounted on the burner. On Aalborg KBE 1000-1300, the fan is delivered as a loose item. Primary air is supplied from the integrated
primary air fan for burner types
Aalborg KBE 150–1300.
DATA SHEET series
© Aalborg Industries 2005, rev. 1.0, March 2008 (Design data are subject to change without prior notice).
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