A PROCESS FOR THE PRODUCTION OF BIMODAL HDPE WITH WAX RECOVERY

摘要

The invention is directed to the wax removal from a low pressure slurry process for the production of bimodal high density polyethylene comprising a polymerisation stage, a powder drying stage, an extrusion and pellet handling stage, recycling stages and a wax removal unit. The wax from the wax removal unit is introduced in a wax recovery unit in which a reduced pressure is created and in which steam is introduced. The invention also relates to such polyethylene wax obtained by the process according to the present invention, which wax has a flame point ranging between 170°C and 200°C.