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Compressors and systems
Biomethane as a fuel
Fig. 3: Fast fill/slow fill post
dispensing station
Here, the vehicles are refuelled
directly from the compressor. For
technical reasons, the refuelling
times vary greatly. An ideal application
scenario is the refuelling of vehicles
during the night hours.
Biogas filling station Coesfeld –
Powerful stand-alone solution in
container design
The organic wholesaler Weiling GmbH
from Coesfeld, west of Münster,
is also consistently focusing on
sustain ability. In the future, the
vehicle fleet for transporting products
to customers throughout Germany
will be powered by regeneratively
produced biomethane. As there
were no suitable refuelling facilities
in the immediate vicinity, the company
decided to build its own station
near the factory premises and commissioned
the Bavarian supplier to
carry out the project planning and
turnkey installation. The significantly
higher refuelling volume required
resulted in a completely different
requirement profile: With a delivery
volume of almost 500 m 3 /h, the station
is designed to safely supply the
company's current 20 semi- trailer
trucks during ongoing operation
and also offers generous reserves
to easily cover the planned expansion
of the fleet to 30 trucks. Thanks
to its modular design, the refuelling
capacity can be further expanded at a
later date by installing additional storage
banks.
Biomethane/natural gas complete
refuelling systems, which are
installed stand-alone, are built in container
solutions.
Compared to the installation in
Waldkraiburg, the much larger and
more powerful module consists of
a compressor with a volume flow of
500 Nm 3 /h, or 360 kg/h, an intake
pressure of 3.9 barg and an output
pressure of 300 bar. In continuous
Fig. 2: B800 Storage module
flows between 11–51 Nm 3 /h, or
7.9–36.7 kg/h, intake pressures between
0.05–4 barg and an output
pressure of 300 bar. In continuous
operation, the daily delivery rate of
the compressor unit is between 190–
880 kg in 24 h. The unit has integrated
filter and post-drying cartridges
installed on the high-pressure side,
which clean the compressed gas and
remove the residual moisture from it.
The high-pressure gas storage
system is made up of individual highpressure
cylinders mounted together
on a frame. The standard capacity is
up to 42 high-pressure storage cylinders,
each with a filling volume of
80 litres per storage module.
Thus, capacities of 265 m 3 up to
1105 m 3 natu ral gas geometric filling
volume at 300 bar can be realized.
Since no public refuelling is planned
here, a “Fill post” is used as a
dispenser. This model was specially
developed for simple, temperaturecompensated
and cost-saving refuelling.
The dispenser series is very
often used in natural gas fueling stations
at depots, especially when they
are not staffed.
Depending on the fill size of the
refuelling volume and the compressor
model, refuelling times of about
5 minutes are achieved when using
the “Fast fill post” version used here.
For applications where the refuelling
time is not of primary importance,
the Munich-based manufacturer
offers as a variant the “Slow fill post”
without integrated storage module.
Fig. 4: Coesfeld CS 26.12 (B3360, Gilbarco dispenser)
GREEN EFFICIENT TECHNOLOGIES 2022
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