Aalborg KBE
Rotary cup burner for heavy fuel oil or diesel oil
The Aalborg KBE rotary cup burner is an optimized, standardized
design of Alfa Laval's 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 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
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 KB (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, Heavy fuel oil fired rotary cup burner
uniform film. The Aalborg KBE burner is a typical rotary cup burner with
combustion air according to the forced draught fan location
The high-velocity primary air discharged around the cup principle. For Aalborg KBE 150-750 the fan is mounted on
strikes the oil film, breaks it up and converts it into a mist the burner. On Aalborg KBE 1000-1300 the fan is delivered
of fine particles, which are introduced into the combustion as a loose item. Primary air is supplied from the integrated
zone and burner. The secondary air necessary for complete primary air fan for burner types Aalborg KBE 150–1300.
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. Normally, atomizing
takes place at a viscosity of approx. 45 cSt., which ensures a
particle size small enough to burn quickly and completely.
Ignition burner Combustion air inlet
Atomising air damper
behind cover Gauge board
Combustion air and
primary air damper
Atomising air connection
Rotary cup
Junction box
Oil flow meter
Burner motor
Oil shut off valves
Oil flow control valve Oil pressure
control valve
Fuel oil return Fuel oil inlet
Burner Guideline Capacity Capacity Burner motor Burner air Air flow Primary air fan Air inlet
Type boiler Min. - max. Min. - max. max. power pressure max. Motor size flange
output 50 / 60 Hz loss 60 Hz position
kg/h MW kg/h kW mm WG Nm3/h kW
KBE 150 1,900 0.55–1.7 50–150 2.2 / 2.6 200 2,300 3-6 180°
KBE 250 3,200 0.60–2.8 55–250 2.2 / 2.6 220 3,700 5-9 180°
KBE 350 4,000 0.65–3.9 60–350 3.0 / 3.6 240 5,200 9-13 180°
KBE 450 5,000 0.70–5.0 65–450 3.0 / 3.6 265 6,700 9-17 180°
KBE 550 6,300 0.80–6.2 75–550 5.5 / 6.6 265 8,100 21 180°
KBE 650 8,000 1.1–7.3 100–650 5.5 / 6.6 275 9,000 34 180°
KBE 750 10,000 1.2–8.4 110–750 5.5 / 6.6 305 10,800 Integrated 180°
KBE 1000 12,000 1.3–11.2 115–1,000 7.5 / 9.0 300 13,300 34 0–360°
KBE 1100 14,000 1.35–12.3 120–1,100 7.5 / 9.0 305 15,400 Integrated 0–360°
KBE 1300 16,000 1.9–14.5 170–1,300 7.5 / 9.0 315 17,600 Integrated 0–360°
General burner data
Heavy fuel oil data General data
Max. viscosity at 50°C 700 cSt Excess air ratio 1.15 -
Max. viscosity at burner inlet 45 cSt Combustion air temperature, design 45 °C
Calorific value 40.2 MJ/kg Fuel oil delivery pressure 25 bar (g)
Diesel oil data (for ignition burner) General electrical data
Viscosity 1.3–12 cSt Main voltage 440/380 V
Calorific value 42.2 MJ/kg Pilot voltage 220/110 V
Frequency 50/60 Hz
MDD00253EN 1508
How to contact Alfa Laval
Contact details for all countries are
continually updated on our website.
Please visit www.alfalaval.com to
access the information.
