Replace Oleum in Industrial Processes to produce SO3
In many industries and processes, Oleum plays an important role for the production of SO3.
SO3 by itself is an instable gas that can’t be stored neither in liquid nor in gaseous form. It’s highly reactive with water and ideal to prepare surfaces of plastics, glass or metals for further processing like painting, galvanization or sulfonation.
The common approach in industrial applications is to cook oleum and have the SO3 evaporate. This process however is very difficult to keep under control, as the release of SO3 can be very violent and it is virtually impossible to control the exact amount of SO3 produced. In most applications, the operators are merely watching the whiteness of the cloud produced to define the quality of the process.
Another issue is storage of Oleum. While it is relatively easy to purchase a railway wagon of oleum, this is not the suitable package size for a laboratory or a medium sized industrial application consuming a few hundred liters or tons per week. Oleum has to be refilled in glass bottles, another process that is extremely dangerous and potentially harmful to the people involved. As sourcing of Oleum (in Germany) gets more and more difficult and expensive, the move from the oleum-based process to a Pentol SO3 generator becomes more and more obvious.
The Pentol SO3 generator is based on SO2 gas supplied in standard bottles with 12, 25 or 61.5 kg. The generator evaporates the SO2, heats it to operating temperature and oxidizes the SO2 to SO3 with a conversion efficiency of up to 95% (at full load).
The process is regulated by a PLC and is fully automatic; meaning that the operator can accurately define how much SO3 is generated and does not need to constantly monitor the color of the vapor anymore!
Supply of SO2 in bottles is much more affordable than oleum, the capex of a SO3 generator is compensated by the saving of raw materials in less than 2 years (depending on the consumption). Additional advantages are a higher reliability, very much increased work safety and a reduction of dangerous goods to be stored.
#sulphonation #SO3 #sulfurtrioxide #oleum