Kombisorbon®-Process
The Kombisorbon® process is designed for the removal of:
- heavy metals, in particular mercury and cadmium
- dioxins and furans
- other ecotoxic organic components
from waste gases.
Typical raw gas conditions:
| Gas temperature | up to 90°C |
| Dust | 2 - 10 mg/m³ |
| Mercury | up to 10 mg/m³ |
| Dioxin/Furan (TE) | up to 30 ng/m³ |
Clean gas criteria (new MACT emission standards for new FBIs (USEPA 2011): at 7% O2):
| Mercury | < 1 µg/m³ |
| Dioxin/Furan (TE) | < 0.004 ng/m³ |
The Kombisorbon® system generally uses a conditioner and a fixed-bed adsorber .
The conditioner includes a coalescer, a droplet separator and a heat exchanger to condition the flue gas to reach optimal parameters before entering the adsorber.
Activated carbon is known for its excellent pollutant removal capabilities. Carbon Process & Plant Engineering S.A. (CPPE) has an adsorbent which offers all the advantages of activated carbon while, at the same time, eliminating its known drawbacks, especially its fouling tendency.
CPPE’s Kombisorbon® process offers the following key advantages:
- Removal of ionic mercury known as Hg2+ through adsorption as HgCl2 on the activated carbon
- Elemental mercury known as Hg0 by forming with the sulphur on the carbon mercuric sulphide known as HgS
- Removal of dioxins and furans through absorption.
System design is tailored to the specific application, with the focus on meeting project-specific objectives for Hg and dioxin removal.
By modifying the activated carbon, e. g. through impregnation, the adsorbent can be adapted to a great variety of applications.
Typical applications are sewage sludge or hazardous waste incineration plants. The first commercial-scale Kombisorbon® unit, was installed in a sewage sludge incineration plant in 1994. Since that time more than 20 units have been put into operation worldwide.
Simplified Kombisorbon® process
