Chemical refining of crude palm oil

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Chemical refining of crude palm oil

  1. 1. EXPLAIN THE CHEMICAL REFININGPROCESS. DESCRIBE EXACTLY WHATIS/ARE REMOVED IN EACH STEP OFTHE REFINING PROCESSReference :PROCESS DESIGN IN DEGUMMING AND BLEACHING OFPALM OIL by PROF.MADYA DR. NOOR AZIAN MORAD,PROF.MADYA MUSTAFA KAMAL ABD AZIZ &ROHANI BINTI MOHD ZIN of CLEAR, UTMCLEAR : CENTRE OF LIPIDS ENGINEERING AND APPLIED RESEARCH
  2. 2. CHEMICAL REFINING OFCRUDE PALM OIL• Also known as Alkali Refining• A conventional method used to refinecrude palm oil• This method involves THREE stages ofrefining process o Gum conditioning & Neutralization o Bleaching & Filtration o Deodorization
  3. 3. DegummingCrude Palm Oil • Gums Chemical Refining (CPO) Alkali Neutralization • Soap StockDeodorization Bleaching • Soap Stock will then splits to FFA NBDPO
  4. 4. Stage 1: Gum Conditioning andNeutralization Phosphatide portion of oil is removed Addition of some additives/agents under specific condition eg: phosphoric acid and citric acid. The oil mass is then neutralised with alkali R-COOH + NaOH RCOONa + H2O
  5. 5. Stage 2 : Bleaching and Filtration In this operation, the oil is taken into cylindrical vessel with agitator called `Bleacher and kept under vacuum and heated up to 90°C with steam. Bleaching agents will adsorb most of the residual colour of the remaining oil after neutralisation
  6. 6.  Filtration through a standard plate and frame press for separation Clear oil obtained is bleached oil In this operation, the coloured pigments in oil are adsorbed by certain bleaching agents under specific conditions
  7. 7. Stage 3 : Deodorization• This bleached oil are then sent to acylindrical vessel called `Deodorizer’.• This oil is then cooled and clarifiedthrough a Filter Press to get sparkling oil.• The purpose of deodorization is tomake oil blend and tasteless. In thisprocess, theperoxide value of oil is brought down asminimum as possible.

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