The
GCKV concept is very simple: consistent bundling of all key functional
units that are needed to reliably supply the gas motors (e.g.
satellites) with the biogas produced. Or to put it another way, the GCKV
container houses all components such as the gas cooler, condensate
trap, liquid coolant circuit, water cooler and compressor. A
microprocessor handles control and regulation of all integrated
assemblies and monitoring equipment. This unit is located in a control
cabinet which is also integrated in the container. The gas cooler,
condensate trap, condensate outlet and liquid coolant circuit are fitted
with vapour-diffusion-proof insulation for protection from extremely
low temperatures. If required, however, the container itself can also be
fitted with sound and heat insulation to protect it from extreme cold
in winter and extreme heat in summer. The all-in-one nature of the GCKV
means the addition of only one more compact unit to the adjacent
assemblies of the biogas plant, gas storage tank and gas utilisation
system.
The GCKV comes in a total of 12 sizes/performance classes from 180 to
2100 Nm3/h gas flow rate, which means the right system is available
for every plant. Further, customised variants are also possible on
request.
Combining the gas supply technology in a central system is advantageous
because it reduces the investment volume for the operator, simplifies
planning, guarantees reliable operation and saves on maintenance later.
The unit is fully assembled in the factory by SILOXA engineers.
The basic version of the GCKV features gas drying (separation of the
water vapour from the biogas), gas compression and transport to the
consumer (CHP). To separate the unwanted water vapour from the biogas,
the gas supply system has a condensation drying unit with tube bundle
heat exchanger and cooling assembly. To supply the gas motor system, the
SILOXA GCKV system is equipped with a compressor with frequency
regulator and temperature monitor to ensure an increase in gas pressure
of 160 mbar (optionally up to 400 mbar).
The
whole system is safe, convenient and easy to operate. A built-in
interface allows integration in a PC network and Internet access. Status
information can thus be requested at any time and all processes
monitored via the PC. The gas supply system can also be optionally
expanded with the addition of diverse measuring modules. For measuring
the gas mass flow rate, the conveyed quantity of gas is recorded by a
gas mass flow meter. The measuring signal is converted to an analogue
signal by the system control unit and sent to the process control system
of the biogas plant. The biogas analyser automatically measures the
concentrations of the relevant gas components methane, oxygen and
hydrogen sulphide intermittently, archives the results and makes these
available as an analogue measuring signal. The gas quantity and gas
composition are important values for controlling the biogas process. All
measurements are required by the master process control system of the
biogas plant. Unless there is a redundant gas utilisation system, an
emergency flare stack is needed for safe disposal of biogas in case of
temporary stoppage of the gas utilisation system. The GCKV can also
perform this function. The optional emergency flare stack allows
controlled combustion of the full biogas production capacity.
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