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belt drier for sewage sludge |
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low-temperature belt drier for sewage sludge |
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The
STELA drier was developed to dry the most various sludges in a reliable,
energy-saving and dust-free way to DS contents of 65 % to 96 %.
The mechanically
dewatered sewage sludge is extruded on a special extruder.
The pellets fall directly onto a perforated conveyoer belt
and form a pile that can be ventilated well. The product is
conveyed into the drier tunnel, hot air flow through it
drying it carefully.
The conveyor belt
takes the product alowly through the drier tunnel.
Mechanical strain like e. g. frictional, shearing or
centrifugal stressing are minimized by this forced belt
conveying.
The retention time in
the drying zone can be adjusted to the minute by the
frequency-controlled drives. Thus the drier can be
adapted extremely well and very flexibly to the most
different requirements (through-put, DS contents,
drying temperatures).
The
homogeneous product structure guarantees a very
constant drying and produces a high-quality,
dust-free granulate. which is excellently suitable
for all further ways of disposal. |
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The STELA BELT DRIER SYSTEM distinguishes itself by
the following advantages: |
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• high-quality final
product, granulated, dust-free, hygienized,
storeable
• energy saving through exhaust air recirculation
• uncomplicated operation and maintenance through
clear design
• flexible installation, as one or multiple belt
drier, according the requirements
• mobile or stationary design, adapted to the
individual requirements
• best accessibility and optimum inspection
possibilities through extensive
doors and windows
• pre-granulation for optimal ventilation for an
effective and low-cost drying
• integrated cooling zone for product cooling with
heat recovery
• full and partial drying in one step (without
remixing of dry product)
• drying degree adjustable from 65 to 95 % DS
• low-temperature drying for safe operation, long
operating life, low vapours load
and fast start-up and shut-down
• flexible heating (fuel oil, natural gas, sewer
gas, steam, water, thermal oil,
waste heat recovery from block heat and power plants)
• utilization of external residual energy (air, flue
gas, water, steam) economically possible
• careful product conveying by the belt. No stress
at the product, long operating life
• exactly defined, adjustable retention time –
optimum adjustment to your requirements. |
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two-belt drier
with cooling zone
semimobile sewage sludge drier |
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