Optimization of enzymatic starch preparation and working station to filmpress including a case study, Wolfgang Schmölzer, Head of Technology Management and Plant Design, GAW technologies

PAPERTECHNOLOGYINTERNATIONAL
Figure 3: (Left) GAW enzymatic starch
preparation rental unit.
Figure 4:(Below) GAW starch
preparation jet cooker, Andhra Paper,
India.
Classic enzymatic starch preparation
There are some good examples of how to achieve
impressive savings in resources during the processing of starch.
In the GAW enzymatic starch processing - when native starch is
used - two operating methods are combined in a very special way.
At the end of the modification process a starch glue is produced
with the viscosity and optimized molar mass distribution required
for the respective application – regardless of the starch type, starch
temperature and solids content. Since the dwell time in the system
can be adjusted as required - and is also kept constant during a
stop or start of the system - expensive raw material losses can be
significantly reduced. In addition, this ensures an almost wastewater-free operation.
Furthermore, this process is also available in a modular
block design in the form of a rental system. Customers use it to
bypass production in the event of failures or bottlenecks, but also for
planned parallel run raw material tests.
In addition, a very compact and modular system for heat
recovery was developed - the patented Heat Recovery System. This
ensures that the flash steam produced after the starch is cooked
(including the heat energy it contains), does not escape unused into
the atmosphere. More than 50% of the energy required by the jet
cooker can be saved with this heat recovery system. For decades,
GAW has been focusing on new technological developments
on reducing the use of water, energy and raw materials in the
customer’s production process.
Figure 5 & 6 (Below) GAW starch preparation Model Eilenburg, Germany.
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