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Micronutrient Recovery from Deodorizer Vapors / Destillate

Micronutrient Recovery from Deodorizer Vapors / Destillate. Alexey Shevchenko Alfa Laval Copenhagen A/S, Søborg , Denmark. . GLOBOIL, September 21, 2013. Outline. Definition Properties and Occurance Design and Operational Aspects Conclusions. Definition.

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Micronutrient Recovery from Deodorizer Vapors / Destillate

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  1. Micronutrient Recovery from Deodorizer Vapors/Destillate Alexey Shevchenko Alfa Laval Copenhagen A/S, Søborg, Denmark. GLOBOIL, September 21, 2013

  2. Outline • Definition • Properties and Occurance • Design and OperationalAspects • Conclusions

  3. Definition Definition of micronutrients: in biology, any chemical element required by living organisms in minute amounts. Here: valuableminorcomponents in deodorizerdestillatesthat find use as ingredients in the food, cosmeticsorpharmaindustries.

  4. Properties and Occurrance

  5. Pure Component Vapor Pressures VaporPressure (mm Hg) Temperature (ºC) Reference: “Deodorizer Destillate Values and Uses in the Evolving Edible Oil Process”, Winters, Robert L., p 154ff, Proceedings from World conference on emerging technologies in the fats and oil industry (1986)

  6. Occurance in Crude Oils(ppm) Toco’s1) T = tocopherols, TT = tocotrienols Sterols 1) 15 – 60% esterified Squalene2) 1) lipidlibrary.aocs.org 2) Gapor MT, Hazrina AR. Squalene in oils and fats. Palm Oil Developments 2000; 32: 36-40; (Malaysian Palm Oil Board).

  7. Uses for micronutrients

  8. Micronutrientmolecules*) Toco’s Sterols Squalene *) lipidlibrary.aocs.org

  9. DestillateCompositionChemical Refining VO = Vegetable Oil, OO = Olive Oil, SO= Soybean Oil, SuO = Sunflower Oil ,RO = Rapeseed Oil, PFAD = Palm Oil Fatty Acid Destillate Reference: “Vegetable Oil Deodorizer Destillate: Characterization, Utilization and Analysis”, Gunawan, S. and Yu, Y-H. , Separation and Purification Reviews, p 207ff (2009)

  10. DestillateCompositionPhysicalRefining VO = Vegetable Oil, CO = Corn Oil, SO= Soybean Oil, SuO = Sunflower Oil VO = Vegetable Oil, SO= Soybean Oil, ,CO = Corn Oil , SuO = Sunflower Oil, PFAD = Palm Oil Fatty Acid Destillate Reference: “Vegetable Oil Deodorizer Destillate: Characterization, Utilization and Analysis”, Gunawan, S. and Yu, Y-H. , Separation and Purification Reviews, p 207ff (2009) Typical Composition (wt%) of PFAD Ref. ”Production and utilization of palm fatty acid distillate (PFAD)”, AbGaporMd Top, Lipid Tech., Vol 22, No 1, p. 11ff (2010)

  11. DetailedCompositionExample: Soybean Oil DeodorizerDestillate(componentsbesides FFA and ”others”) Reference: “Gaschromatographic characterization of vegetable oil deodorizer destillates”, Verleyen, T. et al, , J Chromatography A, 921, p 277ff (2001)

  12. Needs for enrichment 1) Chemical refiningwithoilsrich in volatilemicronutrientsmaydirectly give destillatesuseful for furtherprocessing (e.g. soybeanoil), althoughadditionalenrichment still willbeadvantageous in some cases. 2) Physicalrefiningrequiresenrichmenttechnology to withdrawsufficientlyenrichedmicronutrients.

  13. Design and OperationalAspects

  14. Objectives 1) Deodorizeoil to meetrequirements for micronutrientcontent in the deodorizedoil (typicallytocopherol) – oftensecondary to FFA removalrequirement. 2) To extract and concentratemicronutrients (typically to > 10% concentration) from the deodorizerdestillates to facilitate transport to and furthertreatment in dedicatedprocessingfacilities.

  15. VolatilityBasics

  16. Separation Basics Enrichmentdependson ratio of liquidactivitycoefficients, liquidmolarfractions and pure componentvaporpressures

  17. Adding a condensation zone Enricheddestillate Hightemperature Condensation

  18. TocoBoost®process concept TocoBoost® configuration gives virtually no loss of tocopherols or other micronutrients to the FFA product stream PATENT APLICATION- EP 2 597 142 A1

  19. Implementation OptionHot Oil Scrubbing

  20. Example Oil Soybeanoil Column: Packed (structuredpacking) Operating conditions 260 ºC, 0.75% spargesteam, 2.5 mbar vacuum Oil composition Simulation model PRO/II within-houselipidproperty data base

  21. Toco’s in hot destillateBase Case

  22. Toco’s in hot destillateFinal heatertemperature +5 ºC

  23. Toco’s in hot destillateDecreasevacuum to 1.5 mbar

  24. Toco’s in hot destillateIncreasespargesteam to 1.25%

  25. Conclusions Deodorizer destillates contain valuable micronutrients such as tocopherols, sterols and squalene, that can be withdrawn in enriched product streams. Process simulation toolsareuseful in both design and retrofit studies to identify optimum conditions for the enrichment.

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