incineration plants are in general equipped with a boiler
system, which utilises a large part of the energy content
in the flue gases. This energy generates electric power
or produces heat in a district heating system. The systems
can also be combined.
Sweden and other parts of Scandinavia it is also common
to take the recovery of energy one step further. By cooling
the flue gas to below its dew point, it is possible to
utilise large volumes of energy. If the temperature of
the flue gas after the boiler is approximately 150°C
it is possible by means of flue gas condensation to increase
the efficiency by approximately 20%. The efficiency is
further improved with a heat pump included in the system.
Miljö has delivered highly efficient flue gas condensation
systems to a number of waste incineration plants and biofuel
plants. In several of these deliveries we have also included
a flue gas cleaning capacity and a heat pump process.
The actual flue
gas condensation may well be combined with ADIOX®
for dioxin removal in one or more scrubber stages.
A flue gas condensation
process offers a very interesting potential, both financially
and in terms of the environment. A significant increase
in the production of energy can often be implemented at
a very limited cost, and the increase in energy efficiency
can be achieved without any increase of environmentally
hazardous emissions. The recovered energy does not need
to be purchased from another energy producer. This therefore
benefits the environment in several ways!
Read an interview (November 2011) with managing director Jan Clement of Aars Fjernvarme A/S upon Götaverken Miljö's delivery of a flue gas condensing plant. Götaverken Miljö presents its energy recovery solutions in view of future requirements for higher efficiency.
Extended energy recovery using flue gas condensation with condensate treatment - Sonderborg WTE plant, Denmark.
energy recovery using flue gas condensation,
ADIOX® as police filter - Vestforbraending