There are two forms of dewaxing processes: solvent and catalytic. Traditionally, solvent dewaxing and the production of Group I base oils were most common. However, solvent-based plants have seen falling demands. As a result, many solvent-based plants are closing.
Demand for catalytic dewaxing and Group II and Group III base oils, on the other hand, is rising. Dewaxing catalysts produce base oils which have a higher quality and larger yield.
Group II and III base oils are the product of a long and technically intricate system of pretreating, dewaxing, and hydrofinishing processes. In order to achieve the best possible results, technology partners need to have expertise across the entire value chain. Otherwise, refiners may struggle with meeting base oil specifications and performance standards.