Bulletin 1/2011 - Siempelkamp

SieMpelkaMp | MACHInERy AnD PLAntS
type BCB
Büttner combination burner for a chip dryer
for the panel industry
3-D rendering of the Büttner burner housing
during development
the drying of wet materials such as wood
chips, wood strands, biomass, sugar beet
shavings to the required final moisture
content always requires specific thermal
energy. In direct heated dryer applications
the required thermal energy is generated
by the combustion of production waste
materials such as bark and primary fuels
such as gas and oil. next to grate fired
energy systems, single fuel, multi-fuel or
combination fuel suspension burners are
utilized the most for heat generation.
the customization of heat generators to
the special requirements of the dryer has
been the leading effort by Büttner for decades.
Büttner has established numerous
standards during the development of
various combustion chamber types for
individual operating conditions and
customer requirements. the design of
such combustion chambers was based on
in-house technology know-how and
practical experience, and was continuously
optimized over the years.
the idea developed to also have Büttner
build and supply the burner as a key component
of the energy system. Büttner’s
engineers have the entire know-how of
the combustion process available and have
influenced the design and controls of
third-party burners in the past. At the
beginning of last year, Büttner dedicated
experienced experts specializing in the
areas of burner design, technology and
start-up, to a new department for burner
technology.
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Due to a considerable order backlog
Büttner started to equip their installations
in the sugar industry with their own gas
burners, in a fast and successful way. the
dust-/gas-/oil-combination burner was
developed parallel to that effort. For this
purpose the collective experience from
numerous dryer systems was gathered and
evaluated. During a very time-consuming
effort, a team of engineers developed
an entirely new burner with significant
advantages to current products.
The right burner for the right job
Büttner’s combination burner type BCB is
utilized to generate the heat energy for various
processes and is offered for applications
such as flue gas generation, grate firing
systems, heat source for boilers and thermal
oil generators. the burners are offered for a
wide range of firing capacities and are practically
deployed in all dryer systems for various
materials not limited to asphalt mixing.
Burners are currently offered for maximum
firing capacities of up to 100 MW in different
capacity classes, but are also custo mizable
for individual concepts.
the systems are designed for burning
solid, liquid and gaseous fuels such as
sander and screen dust, different kinds of
carbon dust, heavy oil, light oil, natural
gas and liquid gas (LPG). these fuels can
be burned separately or in combination
with each other, though still maintaining
reliable and economic operation.