A deodoriser is an equipment for deodorising, the final stage in vegetable oil refining

Refining

Refining is the process of purification of a substance or a form. The term is usually used of a natural resource that is almost in a usable form, but which is more useful in its pure form. For instance, most types of natural petroleum will burn straight from the ground, but it will burn poorly...

. Deodorising removes odoriferous material, free fatty acids and other undesired minor components to produce a bland oil with a good shelf life.

State-of-the-art

Over the latest years, the aim of a state-of-the-art deodorising became:

Maximise:

• odor, flavor removal
• free fatty acid removal
• color reduction (heat bleaching)
• peroxides destruction

Minimise:

• losses in essential fatty acids (EPA
  Eicosapentaenoic acid
  Eicosapentaenoic acid is an omega-3 fatty acid. In physiological literature, it is given the name 20:5. It also has the trivial name timnodonic acid...
  
  /DHA
  Docosahexaenoic acid
  Docosahexaenoic acid is an omega-3 fatty acid that is a primary structural component of the human brain and retina. In chemical structure, DHA is a carboxylic acid with a 22-carbon chain and six cis double bonds; the first double bond is located at the third carbon from the omega end...
  
  )
• creation of transisomerisation (TFA
  Trifluoroacetic acid
  Trifluoroacetic acid is the simplest stable perfluorinated carboxylic acid chemical compound, with the formula CF3CO2H. It is a strong carboxylic acid due to the influence of the electronegative trifluoromethyl group. TFA is almost 100,000-fold more acidic than acetic acid...
  
  )
• polymerisation
• breakdown vitamine A+D+E

Organoleptic & Nutritional Value

Final customers require a perfect oil with high organoleptic and nutritional values, even one year after production.

Deodorising stages

The different stages in deodorising are :

• Deaeration
  Degasification
  Degasification is the removal of dissolved gases from liquids, especially water or aqueous solutions, in the fields of science and engineering. There are numerous possible methods for such removal of gases from solids....
  
  
• Heating
• Deodorising / steam stripping
• Heat recovery / cooling
• Final cooling
• Polishing filtration

Top quality products require optimal conditions at all stages.