For biodiesel and renewable fuel manufacturers, reaction mixtures after transesterification usually contain methyl ester, glycerol, solid catalyst residues and volatile light gas. A four-phase centrifuge delivers single-step separation of these four streams, replacing the old multi-stage settling tank + degassing + filtration workflow. Compared with three-phase centrifuges, its independent gas discharge channel eliminates bubble disturbance inside the separation zone, stabilizes the oil-glycerol interface and improves the clarity of separated fractions.

Inside the four-phase centrifuge bowl, high centrifugal force drives density sorting. Heavy solid catalyst particles are pushed outward and transported out by the screw conveyor. Heavy glycerol phase forms the middle liquid layer, biodiesel light phase accumulates closer to the central area, and volatile gas is extracted through the upper gas passage. The adjustable weir plate and centripetal pump structure allow flexible fine-tuning according to feed viscosity and gas volume, minimizing oil loss in glycerol and reducing glycerol carryover in biodiesel.

Food and biofuel grade four-phase centrifuge adopts sanitary 316L stainless steel and full CIP cleaning structure, easy for internal washing to avoid cross-contamination. It can run 24 hours continuously with low vibration and stable load, ideal for large-scale biofuel production lines. By adopting this four-phase centrifuge, factories shorten production cycle, reduce auxiliary tank quantity and boost final biodiesel yield. We offer customized capacity models, on-site installation guidance and operation training for global buyers. You can send raw feed samples for lab separation test and performance report before order confirmation.