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采用反应分离耦合技术以富马酸钙为底物生产Ｌ－苹果酸是目前该产品生产的最佳方式，因此，研究该工艺过程中底物富马酸钙与产物苹果酸钙的溶解行为显得十分重要。详细考察了底物富马酸钙、产物苹果酸钙的溶解过程，讨论了温度、ｐＨ对溶解过程的影响，得出不同温度下溶解的Ｃ－ｔ曲线及动力学方程，结果如下。底物富马酸钙溶解动力学方程：４０℃：ｄＣ／ｄｔ＝２．７６１×１０－２（０．０９１２６－Ｃ）０．５６８２２０℃：ｄＣ／ｄｔ＝２．８７８×１０－３（０．０７５２２－Ｃ）０．２６７９产物苹果酸钙溶解动力学方程：４０℃：ｄＣ／ｄｔ＝４．０４１×１０－３（０．０６７５２－Ｃ）０．４０７１２０℃：ｄＣ／ｄｔ＝９．０９６×１０－３（０．０５１９５－Ｃ）０．７６７６
It is the best way to produce L-malic acid using calcium fumarate as the substrate by the reaction separation and coupling technique. Therefore, the dissolution behavior of the substrate calcium fumarate and the product calcium malate appears in the process Very important. The substrate calcium fumarate and the product calcium malate were investigated in detail. The effects of temperature and pH on the dissolution process were discussed. The C-t curve and kinetic equation for dissolution at different temperatures were obtained. The results are as follows. Calcium fumarate dissolution kinetics: 40 ° C: dC / dt = 2.761 × 10-2 (0.09126-C) 0.568220 ° C: dC / dt = 2.878 × 10-3 (0 .07522-C) 0.2679 Calcium malate dissolution kinetic equation: 40 ° C: dC / dt = 4.041 × 10-3 (0.06752-C) 0.407120 ° C: dC / dt = 9.096 × 10-3 (0.05195-C) 0.7676