Deodorization

Continuous Deodorization

The use of a continuously operating deodorization plant features highest efficiency for deodorizing large product batches and high throughput requirements. Investment costs and low energy consumption quickly pay off.

With an automatic product change system, our continuously operating deodorizers plant reaps the benefits of the simple product change. The continuous operation also ensures that benefits such as low steam consumption and a high degree of heat recovery are retained. An automatic system can be applied for frequent start-up and shut-down operations. The continuous deodorizer operates according to the counter-current principle:

The product and strip steam are directed in a countercurrent during the entire processing time. The continuous deodorizer is also an established distillation device. In case of higher concentration of fatty acids an upstream countercurrent column is connected to the deodorizer. This combination is particularly economical as the exhaust vapors from the deodorizer can additionally be used in the pre-deacidification process. This ensures optimal absorbing capacity of the stripping steam resulting in consider-able savings of resources for vacuum generation. The continuous countercurrent deodorizer features extraordinary benefits.

Excellent product quality:

Gentle cooling under deodorizing conditions,
Uniform processing (narrow retention time spectrum),
Throughput and processing time are infinitely adjustable to product properties.

High efficiency:

Integrated countercurrent heat transfer with high heat recovery (>80%),
Long service life due to highest production quality and materials, no moving parts, minor footprint through compact configuration (e.g. integrated vapor scrubber).

Optimal operational safety, easy operation and maintenance:

Trouble-free operation due to level control in the devices ensuring uniform optimal pump operation,easy inspection of all trays through the central shaft,
Easy product change (automatic product change system),
Gentle cooling under deodorizing conditions.

In this process step a large part of hydratable and even a small proportion of the non-hydratable phophatides are removed. The extracted gums can be processed into lecithin for food, feed or for technical purposes. The gum content in the oil is subsequently reduced according to the refining quality requirements. In principle, the combination and concept of further processing stages is distinguished by

Chemical refining and
Physical refining.

In chemical refining the free fatty acids are neutralized by caustic soda resulting so-called “soap stock” Which is also separated either by decantation or continuously by means of centrifuges. Simultaneously the non-hydratable phosphatides are also separated in this process. In physical refining the gum content can be further reduced by different processes:

Dry acid degumming or
Wet acid degumming.
Flex degumming

Multi- Feed Stock Deodorizer

For generating high-quality oil and fat mixtures for the production of shortening or margarines frequently changing fat or oil batches must be deodorized. The use of a semi-continuously operating deodorizer is recommended for this purpose. The requirements for such production process are fully met and ensure:

Clear separation of the batches,
Precise adherence to defined retention times and other processing conditions,
Unlimited distillation options

Our approach for process technology and constructive decisions in building semi-continuous deodorizers is: creating an optimally refined product which is highly resistant against taste reversions and deterioration.

This semi-continuous deodorizer enables easy operation. A programmable controller guarantees fully automated process cycles. The controller can be adjusted to meet the customer’s requirements and integrated into the computer-controlled system.

Our semi-continuous deodorizer is characterized by particular benefits.

Excellent product quality:

Gentle heating and cooling under deodorizing conditions,
Pre-selectable throughput and processing conditions,
Uniform processing for each individual batch as a result of the Semi-continuous operating method,
Clear product separation thanks to consistent batch separation, indirect heat transfer and automatic residual emptying during product change.

High efficiency through:

Integrated heat transfer with high heat recovery, which is also fully maintained during a product change (“Thermosyphon System”),
Long service life thanks to high production quality and materials,
Minor footprint thanks to compact design,
Standard sizes with narrow graduation from 30 t/d up to 1000 t/d,
High operational safety, maximum leak tightness and easy access for inspections.

Dual Temperature Deodorizer/Deacidification For High FFA Rice Bran and Palm Oil

Application

This high-performance packed stripping column is specially designed for deacidification and deodorization of fats and oils in refining plants. The stripping column is a part of the K-TEK Packed Column deodorizing concept, but can also be offered as a retrofit component for other deodorizers –irrespective of make.

Design Features

Volatile compounds, such as fatty acids and various odor causing compounds, are distilled off by the joint action of the vacuum and the stripping steam. The extensive surface area created by the structured packing and the counter current flow regime in the column significantly reduces the amount of stripping steam needed, compared with the traditional tray system. The short retention time inside the column and the reduced amount of steam means the oil is treated gently. Due to low retention time at high temperature, low amount of steam and fast distillation effect, unwanted or side reactions are reduced to a minimum. The packing is specially designed with a low static hold-up and rapid draining properties. This keeps the level of contamination during stock changes within the desired limits. Due to the special design of the packing, which creates turbulence between the plates, and the fact that there are no stagnant zones, a self-cleaning effect ensures continuous operation. The flexibility of the system keeps the formation of trans-isomers within acceptable limits, and allows for the removal or retention, of natural antioxidants, while maintaining high quality of the oil.

The stripping section allows for the independent operation of distillation, so that process conditions can be modified for different oil stocks and quality requirements without compromising other important factors. In order to simplify service and maintenance, if the column is supplied with the sparge steam tubes, they can be removed from outside for manual cleaning. The inside of the column is accessible for assembling the packing and for maintenance.The column can be supplied with two manholes, one at the top and one at the bottom, with illuminated sight glasses with double O-rings on the flanges.

High efficiency through:

Ultra-efficient thin-film technology
Control of trans fatty acid formation
Control of final colour
Gentle product treatment

Minimum energy consumption

K-Tek’s Dual temperature deodorizer can achieve Trans Fatty Acids below 1 %

Specification – Refined Rice Bran Oil

Physical / Chemical Characteristics Results

Apperance	Clear, free from Rancidity suspended Particles and water.
Odor & Taste	Odorless & Bland
Color in 1” Cell (Y + 5R)	10 -12.0 units (max.)
FFA (as Oleic)	Max. 0.20%
PV	Normal :< 1.0meq/kg, %, Maximum: 2.0meq/kg
Trans fatty Acids	1%
Oryzanol	13000 ppm

Centrifuges enable easy separation of gums in oil types with higher non-hydratable gums contents (e.g. rape oil and soybean oil),
The consumption of bleaching earth is reduced because the oil has already been extensively degummed.
Dry or wet acid degumming are not always sFlexficient to reduce gums to the value required in the oil prior to the combined deodorization and distillation process.
Thus, we have developed a special degumming process:

Batch Deodorization

Deodorization is the quality-defining process step in refining oils and fats and therefore particularly significant. Undesired by-products remain in the oil or fat following the preceding refining processes. These can impair the odor, taste or shelf life of the product and must therefore be removed. Some of these by-products are still bound in the fat molecules. They are only released by chemical transformation provided that the oil has beenefficiently retained in the deodorizer.

Free and low-boiling substances are distilled at higher temperatures in a high vacuum. Steam is added for stripping. Batch-deodorizers are still used today for smallest throughputs, whilst semi-continuous and continuous plants are found in large-scale operations. For any application and throughput of deodorization we offer established and state-of-the-art concepts.

Sales:

Deodorization

Continuous Deodorization

Multi- Feed Stock Deodorizer

Dual Temperature Deodorizer/Deacidification For High FFA Rice Bran and Palm Oil

Batch Deodorization

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