The ACIDOURA® process involves the adsorption of SO2 by activated carbon and the subsequent reaction with oxygen and water to form sulphuric acid. The SULFACID® process has been developed to remove SO2 from waste gases generated by chemical and metallurgical processes. SO2 is recovered in the form of dilute sulfuric acid only (i.e. < 20% H2SO4). The process lends itself particularly well to applications where the dilute sulfuric acid can be directly reused, as for example in titanium dioxide production according to the sulfate process.
The features of the ACIDOURA® process are:
- Simple reaction control
- Minimum maintenance requirements
- Minimum operator attendance
- Low specific energy costs
- Simple equipment