Liquid Sugar Refining Process Ion Exchange Resin Demineralization

Liquid Sugar Refining Process Ion Exchange Resin Demineralization System JUNE 16, 2011 Organo THAILAND CO. Organo Corporation

1. 　Introduction Ion exchange resins (IER) have been employed in the sugar refinery process for the purpose of decolorization and demineralization (deashing) of sugar liquor. Compared to the remelting of white sugar, higher decolorization rate and extremely high sugar yield can be obtained by the direct demineralization of clear liquor or fine liquor. Organo has developed an efficient IER system the “SUPER FINE LIQUOR SYSTEM” (A-MB system), which consists of an anion exchange resin tower and a mixed bed tower of anion exchange resin and cation exchange resins. This system has been applied to many sugar refinery factories in Japan and has an excellent reputation for the high quality. 　　　　　　 Organo Corporation

2. Liquid Sugar Products in Japan Sucrose type Liquid Sugar Ion exchange resin refined liquid sugar ・High quality Large scale production (demineralization) Remelt liquid sugar （granulated sugar） ・Quality depends on granulated sugar and water. Small scale production Invert Syrup (Hydrolyzed sugar syrup) ・Distinct flavor ・Nongenetically modified (compared to isomerized sugar made from cornstarch) Molasses type ・Low cost Liquid Sugar （Ingredient of sauce） Organo Corporation

3. Refining Process (Japan) Raw Sugar B sugar from Australia, Thailand etc. Affination Remelt A-MB System Carbonation Filtration 600～ 1000 I. U. Active carbon or Bone char 60～ 150 I. U. Ion Exchange Resin Deminiralization Concentration Crystalization Ion Exchange Resin Decolorization 20～ 50 I. U. Crystalline Sugar Sterilization Filtration Liquid Sugar <10 I. U. Organo Corporation

4. Required Quality of Liquid Sugar (Example) Organo Corporation

5. Refining Process (Thailand) Affination Sugar cane Remelt Crushing & Extraction Carbonation Filtration 300～ 600 I. U. Filtration Ion Exchange Resin 2 steps 100～ 300 I. U. Concentration Crystallization C sugar B sugar Crystallization A sugar Refined sugar ～ 45 I. U. ＜ White sugar Brown sugar 45～ 100 I. U. 400～ 1000 I. U. Organo Corporation

6. 　Liquid Sugar Production Process Present process Affination Remelt Proposed process Carbonation Filtration Ion Exchange Resin 2 steps Concentration Crystallization Ion Exchange Resin Demineralization Concentration A-MB System < 20 IU < 1. 0 m. S/cm Sterilization Filtration Liquid sugar Organo Corporation

7. 　Total Demineralization Process Present process Affination Proposed process Remelt Carbonation A-MB System Filtration Ion Exchange Resin Demineralization Ion Exchange Resin 2 steps Concentration < 20 ICUMSA < 1. 0 m. S/cm Concentration Crystallization Refined sugar ＞ White sugar Brown sugar Organo Corporation

8. 　Principles of Demineralization Regeneration Clear liquor or Fine liquor Anion exchange resin Na. OH HCl Cation exchange resin Liquid sugar （Super fine) Na. OH＋Na. Cl Organic acids Na. CO 3 Color etc. Adsorption of color, ions, organic acids etc. HCl＋Ca. Cl 2 Na. Cl, KCl　 etc. Organo Corporation

9. 　Conventional Ion Exchange Systems Reverse system（ Ａ－Ｋ） Mixed Bed system （ＭＢ） Anion exchange Cation exchange tower Mixed bed tower ・High total throughput ・High quality ・Low total throughput Organo Corporation

10. 　A-MB System ・High quality ・High total throughput Anion exchange tower Mixed bed tower Organo Corporation

11. 　Comparison of Ion Exchange Systems Graph 1 Outlet color analysis of conventional systems and A-MB system Conditions: 50℃, Flow rate 4 L/L-SBAER・h Feed: Fine Liquor　(Brix 50%, EC 98 m. S/cm, p. H 7. 3, 71 I. U. ) Organo Corporation

12. 　Column Test Results (Thailand) System Factory A Factory B Factory C Factory D Softening-AMB A-MB Clear Liquor (Feed) Color (I. U. ) 854 450～ 600 380 580 Conductivity (m. S/cm) 137 80～ 100 33 100 Super fine Liquor (Outlet) Color (I. U. ) 3～ 15 3～ 10 2～ 7 10～ 20 Conductivity (m. S/cm) 0. 3～ 1. 0 0. 5～ 1. 5 0. 2～ 0. 8 Organo Corporation

13. 　Column Test Results (Example １) Feed Analysis　（Clear liquor) 　Brix 　p. H 　Conductivity 　Color Value 55% 7. 8 90 m. S/cm 600 ICUMSA Unit Organo Corporation

14. 　Column Test Results (Example 2) Feed Analysis　（Clear liquor) 　Brix 　p. H 　Conductivity 　Color Value 54% 8. 2 137 m. S/cm 854 ICUMSA Unit Organo Corporation

15. 　Column Test Results (Example 3) Feed Analysis　（Fine liquor) 　Brix 　p. H 　Conductivity 　Color Value 60% 7. 2 60 m. S/cm 145 ICUMSA Unit Fine liquor Column outlet Organo Corporation