Dry fractionation



With the increase in palm oil production, the dry fractionation process has also gained in importance, both in comparison with other fractionation processes and in terms of the number of tonnes per annum. This has been assisted by the development of far less labour-intensive processes and improved understanding of the physical chemistry involved. This new insight indicates that temperature uniformity in a crystalliser is not necessary, which opens the door to continuous crystallisation. Combining this continuous crystallisation with a proven continuous separation system such as the conical sieve centrifuge could well lead to a fully continuous dry fractionation process. It is not there yet but likely to arrive.