Media | 9 September 2010 15:05
EnviTec Biogas AG / Key word(s): Energy
09.09.2010 15:05
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New technologies will increase the efficiency of biogas plants
Lohne, September 9, 2010 - At its ninth Biogas Symposium, EnviTec Biogas AG
presented two new components to interested plant operators, namely a
next-generation stirring system and a biotrickling filter for biogas
desulphurisation. Both innovations will take biogas production a decisive
step forward. The technology leader of the biogas industry thus once again
demonstrates its ability to innovate.
Once a year, the company from Lohne, Germany, invites its customers to a
symposium to inform them about the latest technological achievements and
current legal requirements in the biogas sector. In early September, some
100 customers came to Steinfeld to listen to the presentations of the
EnviTec experts from the fields of R&D, service and quality assurance,
which focused on new technologies that will increase the efficiency of
biogas plants.
The so-called mid-size agitator is installed in the fermenter to mix the
substrates and is characterised by a number of advantages over the other
agitators used in biogas plants to date. Its most important advantage is
the outstanding efficiency: 'A mid-size agitator delivers more thrust with
lower consumption,' says EnviTec's CTO Jürgen Tenbrink, summarising the
results of a comprehensive comparative study. With its large-diameter
propeller of glass fibre-reinforced polyurethane, the mid-size agitator
achieves a higher efficiency at lower speed and with lower friction losses
than conventional agitators. At the same time, the lower speed reduces
propeller wear, thus extending the agitator's maintenance interval.
The biological trickling filter which has been developed to desulphurise
biogas outside the fermenter also delivers considerable added value for
biogas plant operators: in order to protect the motor in the combined heat
and power unit (CHP), the concentration of hydrogen sulphide in the biogas
can be considerably reduced with the aid of a biological purification
process using microorganisms to oxidise the sulphur. These microorganisms
settle on film strips in the trickle filter; biogas streams up through the
trickle filter which is regularly moistened. The oxidation product
(elementary sulphur) built up on the film strips drops to the bottom of the
filter and is then discharged. The plant has a desulphurisation performance
of more than 94 percent on average.
In the past months, EnviTec already presented several technical innovations
which significantly increase the efficiency of biogas plants such as an
optimised substrates macerator also referred to as 'Kreis-Dissolver'. The
company also earned high recognition for its tried-and-tested technology
for consistent biogas production; the performance-controlled feeding
system, 'EnviTec Feedcontrol', won the 'Machine of the Year' award in the
'Renewable Energy' category at the Agritechnica show in November 2009.
Plant operators attending the symposium in Steinfeld were highly
enthusiastic about the latest technological achievements presented by
EnviTec. But the company's engineers do not intend to rest on their
laurels. 'We constantly work to improve the biogas technology. Apart from
our own development activities, we cooperate with external manufacturers to
optimise new technologies and equipment that are expected to increase the
efficiency of plant operation,' explains Chief Technology Officer (CTO)
Jürgen Tenbrink.
About EnviTec Biogas AG
EnviTec Biogas AG covers the entire value chain for the production of
biogas - including the planning and turnkey construction of biogas plants
as well as their commissioning. The company provides the biological and
technical service, and also offers full plant and operating management. In
Güstrow, in the German state of Mecklenburg-Western Pomerania, EnviTec
Biogas built the world's largest plant for the production of biogas to
natural gas standards with a thermal output of 55 megawatts. In addition,
the company also operates its own biogas plants. Today, the company is
represented in 15 countries throughout Europe, as well as in India. EnviTec
Biogas generated revenues of EUR 120 million and EBIT of EUR -0.5 million
in 2009. The EnviTec Group currently has 411 employees. EnviTec has been
listed on the Prime Standard segment of the Frankfurt Stock Exchange since
July 2007.
Press contact:
Thomas Bolte
EnviTec Biogas AG
Tel: +49 25 74 88 88 -198
E-mail: t.bolte@envitec-biogas.de
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Language: English
Company: EnviTec Biogas AG
Industriering 10a
49393 Lohne
Deutschland
Internet: www.envitec-biogas.de
End of Announcement DGAP-Media
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