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The
biggest drier in Europe
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Rising energy prices
and the consumers’ increasing quality-consciousness require
modern drying technologies. Against this background, it is a
must for many companies to buy new economical drying plants.
Quality and efficiency have always to be regarded together.
This means that the maximum throughput rate has to be
achieved with an amount of energy as low as possible. The
constructive design as drier with roof-shaped air ducts
sells on the market. Naturally, the drier should be designed
in aluminium whereas there are unfortunately still dangerous
mixtures of galvanized sheet metal and chrome steel found on
the market.
The currently biggest maize drier in Europe was developed by
STELA Laxhuber and was installed for RWA in Aschach on the
Danube in Austria. This continuous mixed flow drier has a
capacity of 50 tons per hour, no less. With the quantities
of water to evaporate, an optimum design of the air duct
system forms the basis of efficiency. The drying plant works
with active heat recovery by means of a sophisticated
circulation air system with maximum water saturation of the
air.
STELA constructed the EMSR (electro-mechanical control)
system with a user-friendly control by means of the most
modern PLC technology. This includes exact temperature
monitoring and automatic moisture control.
This drying plant is made up of four drying columns. For
smaller capacities, especially at the beginning of the
drying season, the drier can be run with only two columns e.
g., until there is enough quantity for full capacity. On
account of the construction, this does not mean restrictions
in questions of energy consumption and quality!
The drier is heated by infinitely variable gas line burners,
which are the basis for optimum heat distribution in the
process air. The water-loaden exhaust air is cleaned by
means of centro separators so that only water and air leave
the drier through the chimney.
The drier is fed from various silo elements for the wet
product. The dry product can be discharged by various ways;
e. g. by means of drag bar feeders into silos or onto
railway carriages. The nearby Danube also allows loading
directly onto ships.
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