2004 - ANDRITZ Vertical volute pumps

80
GLOBAL SERVICES/ACTIVITIES
ENVIRONMENTAL PROTECTION
ENVIRONMENTAL
PROTECTION
The Andritz Group is committed to promoting
environmental protection and conservation of
natural resources. Andritz AG’s official Declaration
of Environmental Protection establishes the principles
and objectives of its environmental policy.
The Group also pursues a proactive information
policy vis-à-vis the communities in the vicinity of
the Group’s production plants, the general public,
and government authorities.
Andritz’s manufacturing processes and the products
it makes are designed to minimize the consumption
of natural resources and energy in order
to have minimum impact on the environment. This
approach also reduces production and operating
costs to the benefit of Andritz customers.
Uniform environmental protection guidelines
are implemented at all Andritz production sites.
Responsible managers within each Andritz facility
are empowered to ensure that the guidelines are
strictly adhered to.
As a commitment to continuous improvement,
each year Andritz AG has the results of its environmental
protection activities examined by a
commission appointed by the City of Graz. In
2004, the Andritz site in Graz again received the
“ÖKOPROFIT” certificate awarded by the City
of Graz for special environmental achievements.
Measures to further reduce energy consumption
were continued in 2004, including improved thermal
insulation in the workshops and the use of
power-saving lighting. Also, the portion of goods
shipped by rail was considerably increased, reducing
truck traffic on the surrounding roads.
Andritz products for a cleaner environment
The Pulp and Paper Business Area offers
processes, systems, and equipment that reduce
waste, save energy, and minimize the environmental
impact of its customers’ operations.
ANDRITZ 2004
Most mills have taken significant actions to
reduce the environmental impact if bleaching is a
part of their production processes. Andritz continues
to be a technology leader in the development
of bleaching processes which utilize alternatives
to chlorine for reduced environmental impact.
Andritz systems for dewatering (such as presses
and filters) and water recycling (within the fiberline
or during the papermaking process) within the
mill reduce the effluent loads on nearby receiving
waters.
In the chemical recovery area of a pulp mill,
systems for black liquor evaporation, combustion,
and white liquor production have a significant
impact on the emissions from the mill.
Andritz black liquor evaporators produce reusable
process water from the black liquor. The reuse
of condensate reduces the COD load in effluent
waters and the amount of fresh water required in
the pulping/recovery process. Condensates generated
within the black liquor evaporation process
are segregated and collected within the Andritz
system and methanol found in the condensate
is “stripped” from the condensate for further processing.
Andritz also provides methanol liquefaction
equipment so that the liquefied methanol can
then be used to replace fossil fuel in the lime kiln.
After extensive research and development work,
the emissions from a state-of-the-art Andritz
recovery boiler are minimal. For example, the SO2
emissions approach zero when the black liquor is
evaporated into high dry solids and a Vertical Air
system is utilized in the recovery boiler.
Maximum electricity production and minimal
greenhouse gas emissions are becoming important
considerations for the increasingly energy-
and environmentally-conscious pulp industry. The
High Energy Recovery Boiler (HERB) concept,
developed by Andritz, offers an effective way to