Palm Kernel Press Section The dried palm kernel (moisture 6%) passed through the elevator and screw conveyor to the first palm kernel press, and the palm kernel cake was pressed for the second time. The pressed palm kernel oil was filtered through a leaf filter and vacuum dried to remove water and stored in a palm kernel oil (CPKO) tank.Palm Kernel Oil Production Plant website:http://www.yahua-group.net/palm-kernel-oil-production-plant/