Surface World September 2019 Surface World September 2019 | Page 38
OVENS, SPRAYBOOTHS & PROCESS HEATING
New Lanemark burner design
opens up new opportunities
The selection of the most
effective temperature and
process burner control
system is one of the key
factors that impacts on the
overall effi ciency of a gas-
fi red industrial recirculating
oven or dryer, particularly
in terms of energy usage.
That is the proven view
of Lanemark Combustion
Engineering Ltd. who have
designed, manufactured
and installed a wide range
of process gas burner
systems worldwide – many in
facilities that are at the heart
of the surface treatment
and fi nishing sector.
Significantly, it is a view that underpins
the company’s highly acclaimed FDGA
burner design which sees both the gas and
combustion airflows modulate in response to
the process oven temperature requirements.
Moreover, it is now the principal behind the
latest addition to the Lanemark FD range –
the FDB packaged or semi-packaged burner
– which offers additional advantages in terms
of both location and, importantly, flame profile.
“As with the FDGA design, FDB burners offer
flexible, high turndown control of both gas
and air with benefits seen particularly across
a range of oven, dryer and spray-booth
applications,” says Adrian Langford, General
Manager at Lanemark Combustion
Engineering. “This is clearly relevant in the
surface treatment sector in areas such as
paint spray-booth air heating – for both spray
and bake cycles – and with paint drying and
curing ovens.”
Adrian Langford points out that a key
characteristic of the FDB design is its ability
to be mounted either internally within an
enclosure or directly onto the wall of a dryer,
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oven or process air
heating duct. It can
therefore operate in
line with, or at 90°
to, the process
airflow.
“In this context, the
flame shape is of
particular
significance as it can
deliver either a
square or
rectangular profile
– rather than a
conventional circular
configuration,”
continues Adrian
Langford. “Flame length is both short and
consistent irrespective of the FDB rating
specified, optimising its suitability for
mounting inside an enclosure.”
He adds that the system is also designed to
reduce emissions to minimal levels.
The Lanemark FDB design also makes full
use of the latest electronic variable speed
drives whereby temperature control signals
are received from the heated process air
which then modulates the output of the
combustion air fan. When the required
operating temperature has been reached, the
temperature control signal falls, the
combustion air fan speed slows down and
the pressure generated by the fan reduces.
This change in combustion fan air pressure is
transmitted to the latest generation of gas/air
modulating control valves, such as the VAV
series produced by Kromschroder, so that
the gas flow is reduced proportionately.
These are clear-cut gains when compared to
gas and air modulation via a linked gas
butterfly valve and combustion air damper
where the combustion air fan runs
continuously at maximum speed with the
linkage arrangement between the gas and
air supplies being both inflexible and,
potentially, prone to sticking.
As with all Lanemark TX (tank heating) and
FD (forced draught heating) burner systems,
the FDB is available in a choice of sizes
and configurations to match application
needs, with heat input options, for example,
ranging from 9 to 1400 kW. In all cases,
installations can include a compact,
pre-piped modulating gas valve train and
SEPTEMBER 2019
control panel which includes a burner
controller, ignition transformer, differential
air pressure switch and two three-way air
valves as standard. The company points out
that additional control components, including
temperature controllers, can also be included
where requested and that the burners can
be specified for use with either natural or
propane gas.
“The operational and environmental benefits
of our FD range have been demonstrated
in a long and growing list of installations in
many different industrial sectors, and we are
delighted that the surface treatment and
finishing sector has long been one of our
key UK and international market places,”
adds Adrian Langford. “The addition of
the FDB unit not only extends application
and performance options but also acts as
a further demonstration of our ongoing
commitment to research, innovation and
product development.”
Telephone: (024) 7635 2000
Email: [email protected]
Visit: www.lanemark.com
read online: www.surfaceworld.com