TEMPERATURE CONTROLLED IN SITU WAX PURIFICATION

摘要

A hydrocarbon wax product from a HCS slurry comprising liquid synthesis product and catalyst particles is purified by circulating the slurry from a synthesis zone with a first temperature through a treatment zone with a seco nd temperature in which a hydrogen-containing treatment gas contacts the slurry . The gas treatment removes impurities from the hydrocarbon wax product and al so removes catalyst de-activating species which may be present in the slurry. Purified wax product is separated and removed from the treated slurry via wa x withdrawal means. This avoids or minimizes the need for further treating the wax product. Remaining treated slurry may be returned to the synthesis zone.