LOWTRANS® Deodorization
LOWTRANS® Deodorization System
Conventional deodorization of vegetable oils at elevated temperatures and extended retention times can promote the formation of trans fatty acid isomers, which are undesirable from a nutritional and regulatory standpoint. To meet stringent quality and health requirements, trans fat levels in refined edible oils must be tightly controlled through optimized deodorization conditions.
DVC’s LOWTRANS® Deodorization Technology is specifically engineered to minimize trans fatty acid isomer formation by operating under dual temperature zones combined with deep vacuum conditions, without compromising deodorization efficiency or product stability.
LOWTRANS® Edible Oil Deodorizer Process
The LOWTRANS® deodorization plant operates under a high vacuum of approximately 1.2 Torr and employs two distinct temperature zones:
High-Temperature Stripping Zone
In the first stage, oil heated to 245–260 °C in the FEVAC® Final Heater enters the stripping section. At this temperature, free fatty acids, odoriferous compounds, and other volatile components are efficiently removed through steam stripping under vacuum.
Low-Temperature Polishing Zone
Following high-temperature stripping, the oil temperature is reduced to 230–240 °C via regenerative heat exchange with incoming bleached oil directed to the final heater. This controlled temperature reduction limits thermal stress on the oil, thereby suppressing trans fatty acid isomer formation while completing deodorization.
Performance Advantages
The dual-zone deodorization approach ensures effective removal of:
…while maintaining exceptionally low trans fat levels in the finished oil.
Key Features of LOWTRANS® Deodorization Plant
Trans fatty acid isomer content < 0.5%
Operating vacuum: ~1.2 Torr
Dual temperature zone deodorization for optimal thermal control
Efficient stripping with reduced thermal degradation
Improved oil stability, nutritional quality, and regulatory compliance
Equipment Offered
Low Trans Fat Edible Oil Deodorizer
Vegetable Oil Deodorization Plant
