Engineering is our Passion
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SUPERCO Procedure -
Made by HUGO PETERSEN
Sulphur dioxide in waste gases, which is produced in metallurgical plants or in the thermal power plants operated with fossil fuels or in other processes, is not only the main cause of air pollution, but at the same time a valuable raw material for the production of sulphuric acid, one of the most important basic chemicals worldwide.
Industrially, the conversion of sulphur dioxide to sulphuric acid is mostly done by the contact process, which requires an SO2 concentration of ≥ 4% by volume for optimal functioning. Occasionally, however, the concentration of sulphur dioxide in waste gases is lower than 1 vol.%, so that the production of sulphuric acid by contact process is out of the question or not economically viable.
Furthermore, due to stricter legal limit values, a final gas cleaning stage is increasingly required to reduce SO2 residual emissions, for example, in order to be allowed to operate a sulphuric acid plant.
Therefore, for the purpose of recycling SO2 gases of low concentration or for use as a final gas cleaning stage, the SUPERCO- process was developed by HUGO PETERSEN.
The core of the process is the adsorption of the sulphur dioxide in an activated carbon bed, which is housed in a reactor.
The sulphur dioxide present in the exhaust gas in low concentration uses the catalytic property of the activated carbon and reacts in the presence of water and oxygen to form sulphuric acid. The discharge of the sulphuric acid by fresh water leads to a continuous regeneration of the activated carbon, resulting in long service lives for it.
The SUPERCO process represents a technically as well as commercially optimal solution for the production of sulphuric acid at SO2concentrations of 300 ppm to 10,000 ppm.
At even lower concentrations, the SUPEROX process developed by HUGO PETERSEN has economic advantages.