FLUE GAS CLEANING WITH
MERCURY AND DIOXIN
REDUCTION AT SAKAB, SWEDEN
For SAKAB, Norrtorp in Sweden, Götaverken Miljö AB has built a
flue gas cleaning plant using the MercOx and ADIOX
®
processes.
Mercury (Hg) and dioxin emissions, as well as SO
2
and HCl have been
considerably reduced.This plant has been prepared for future installation
of flue gas condensation to recover energy from the flue gas.
Idrifttagning skedde under våren 2000.
The MercOx and ADIOX processes were developed in close collaboration with
Anläggningen har byggts för att uppfylla EUs framtida,
Forschungszentrum Karlsruhe, Germany.
stränga miljökrav och är sannolikt den mest energieffektiva
avfallsförbränningsanläggningen i världen.
Götaverken Miljö AB levererar
rökgasrening, kondensering, turbinaggregat och värmepumpar.
Plant Data
Flue gas cleaning:
Boilers:
Rotary kiln + grate fired furnace
Plant contractor:
Götaverken Miljö AB
Capacity:
60 000 + 90 000 m³/h (n, wg)
Process:
MercOx and ADIOX
®
MercOx- and
ADIOX
®
scrubber
Waste water free!
Figure by Holmberg
Description of the plant
The SAKAB AB incineration plant for hazardous waste in Norrtorp (Sweden) was originally equipped with a semi-
dry absorber and an electrostatic filter. A baghouse filter was added in 1990. The flue gas cleaning was upgraded
with a scrubber plant using the MercOx-process in 2000. The EU legislation on emissions of HCl, SO
2
and Hg
necessitated an extension of the plant. With this installation, SAKAB will be able to manage the peaks that
occasionally occur during combustion, whilst optimising mercury reduction. Furthermore, the plant has been
prepared for future flue gas condensation to recover energy from the flue gas.
ADIOX has been installed since 2004 in order to reduce the memory effect in
the scrubber and enhance the overall dioxin removal of the system.
The ADIOX and MercOx processes were developed by Götaverken Miljö in
collaboration with Forschungszentrum in Karlsruhe, Germany. In the
MercOx process, mercury (Hg) is separated from the flue gas by injection of
the environmental friendly oxidizing agent, hydrogen peroxide, plus an
additive. The ADIOX tower packings consist of polypropylene with carbon
particles. Dioxins are captured in the ADIOX material (patent pending) and
can be incinerated after use. The dioxins are then destroyed.
The process has a number of advantages compared to other methods. As a
result of the new scrubber plant, SAKAB will be able to handle not only
mercury peaks but also reduce emissions of sulphur dioxide (SO
2
) and
hydrochloric acid (HCl).
MercOx-scrubber
Forschungszentrum Karlsruhe
Technik und Umwelt
GÖTAVERKEN MILJÖ AB
Postal address
•
Box 8876, SE-402 72 Göteborg, Sweden
Visiting address
•
Anders Carlssons gata 14
Telephone
•
+46-31-50 19 60 Telefax
•
+46-31-22 98 67
www.gmab.se
