... steel mesh filtering. 2.Horizontal-closed type. JYWL Sludge Oil Filtration Machine:Series JYWL horizontal-closed oil filtration ... applied in chemical, petroleum, food, pharmaceutical and other industries for treating unqualified turbine oil, engine oil, lube oil ... horizontal-closed oil filtration machine can separate pigment, bitumen, sludge, particles, wax, colloid, free carbon etc. effectively. ...