ArcelorMittal Bottrop Employs Energy Module as Electricity-Producing Pressure Reducing Station / Prosper coking plant is making another contribution to environmental protection in Bottrop

Marl (ots) - Since September 2013, ArcelorMittal Bottrop has been
operating an electrical power unit (Energy Module) together with the
company ENVA Systems GmbH. The Energy Module partially substitutes a
pressure reducing station, in which the pressure of the incoming
steam is reduced, and utilizes the resulting energy for producing
electricity for the coking plant's wash water treatment.

The Energy Module produces 80 KW per hour. This annual output
would be enough to supply around 100 four-person households with
electricity. The energy produced is fed into the coking plant's power
grid and consumed by various machines, plant sections, and pumps.

Using the electrical power unit within the range of the existing
pressure level is a novelty for ArcelorMittal Bottrop. The use of the
Energy Module makes steam turbines dispensable. This advantage has an
effect on the operating costs, as turbines are significantly more
expensive and require more intensive maintenance.

The Energy Module can be used in any branch of industry as, thanks
to its compact modular design, it can be precisely tuned, both,
electronically and thermodynamically, to a wide variety of
situations. In simple terms, the electrical power output of a module
results from the available enthalpy difference resulting from the
pressure difference at the entrance and the exit of the machine, the
steam mass flow rate in the process, and the quality of energy
conversion.

Apart from its application as a substitute for a pressure reducing
station, the ENVA Systems GmbH's Energy Module can also be used as a
waste steam utilization unit placed in front of condensers or
chimneys. In this type of application, even the very last bit of
energy can be squeezed out of apparently useless steam for producing
power in a very cost-effective way. The special characteristic of the
expansion unit, which is the core of the Energy Module, is that even
low incoming pressure levels of around 600mbar on the Energy Module's
steam entrance side can be very efficiently converted into mechanical
energy and, subsequently, into electricity.

On the issue of economic efficiency, ENVA-Systems GmbH explains
that in case of full use of the annual capacity of the Energy Module,
the operator will be able to have a payback period of less than three
years. Apart from its advantages in economic terms, the steam system
optimization achieved by utilizing the new unit also enables users to
save CO2 and primary energy.

With its Energy Module, Prosper coking plant is making another
contribution to the environ-mental friendliness of industrial plants
and additionally helps saving costs.

Contact:
ENVA Systems GmbH
Ewald Schönhals
Zechenstraße 6
D- 45772 Marl
Tel: +49 (0) 2365 - 698 16 10
Email: info@enva-systems.com

Press Contact:
ENVA Systems GmbH
Dr. Volker Schulz
- Presse- und Öffentlichkeitsarbeit -
Zechenstraße 6
D- 45772 Marl
Tel: +49 (0)175 - 54 31 710
E-Mail: info@enva-systems.com