As a process engineer who’s spent over a decade optimizing screw press operations across Asia and Europe, I’ve seen firsthand how one small oversight—like mismanaging temperature during high-moisture pressing—can cost you 5–7% in oil yield and compromise flavor consistency.
When raw materials like soybeans or rapeseed contain more than 10% moisture (common in humid climates), improper heat management triggers protein denaturation before the oil is fully released. This not only reduces extraction efficiency but also leads to cloudy oil with unstable shelf life—a red flag for B2B buyers sourcing premium edible oils.
In our lab tests at a 30-ton/day facility in Vietnam, we found that maintaining the barrel temperature between 65°C and 72°C significantly improved both clarity and oxidative stability. Compared to uncontrolled runs where temps fluctuated wildly (from 45°C to 90°C), the optimized batch showed:
We recommend a segmented heating approach tailored to moisture content:
| Moisture Range (%) | Recommended Temp Zone (°C) | Purpose |
|---|---|---|
| 8–10% | 60–65°C | Protect proteins, prevent emulsification |
| 10–12% | 65–72°C | Optimize flow & separation |
| >12% | 72–78°C (with cooling buffer) | Prevent microbial growth + reduce viscosity |
Pro tip: Place thermal sensors every 3 meters along the press shaft—not just at the inlet—to catch hotspots early. One client in Brazil avoided a major shutdown after we helped them install three additional probes based on this logic.
Most alarms come from either sensor drift or poor calibration—not mechanical failure. If your system shows “High Temp Alarm,” first check if it's triggered by a single sensor reading above 80°C. Often, it's due to localized overheating caused by uneven feed distribution or clogged discharge ports.
Our team has developed a simple diagnostic checklist that helps operators resolve 90% of these issues within 15 minutes—without calling service engineers. It includes verifying feed consistency, checking for blockages, and recalibrating sensors using a known reference point (like boiling water at sea level).
Download our free Temperature Control Setup Checklist—used by over 200 industrial clients worldwide—to avoid common mistakes and boost yield consistently.
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