Standing wave design of nonlinear SMB systems for fructose purification
Standing wave design of nonlinear SMB systems for fructose purification
复制标题
用于果糖纯化的非线性 SMB 系统的驻波设计
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
N. L. Wang
中科院分区：
文献类型：
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作者：
T. Mallmann;B. Burris;Zidu Ma;N. L. Wang
通过驻波分析，推导出具有非线性等温线的连续移动床（CMB）和模拟移动床（SMB）系统的设计方程。从间歇洗脱实验中得到的简单波解和速端图可用于推导无传质影响的SMB系统的最佳操作条件。设计方程进行了测试与计算机模拟的结果和实验数据从两个中试规模的模拟移动床装置分离果糖从葡萄糖。单组分和二元溶液的批平衡试验用于估计吸附等温线参数。总的传质和轴向分散系数估计从八组脉冲，正面和洗脱数据在不同的浓度和流速。在驻波分析中使用等温线和传质参数来确定两个SMB单元的区域流速和切换时间。实验柱剖面、产品纯度和产品浓度与模拟结果密切一致。该方法为具有非线性等温线的SMB系统提供了稳健的操作条件，并且可以从驻波分析确定非线性系统的最佳循环时间和区域流速，而不具有传质效应。
Design equations were derived from standing wave analysis for continuous moving bed (CMB) and simulated moving bed (SMB) systems with nonlinear isotherms. Simple wave solutions and hodograph plots from batch elution experiments can be used to derive the optimal operation conditions for SMB systems without mass-transfer effects. The design equations are tested with results from computer simulations and experimental data from two pilot-scale SMB units for the separation of fructose from glucose. Batch equilibrium tests of single component and binary solutions are used to estimate adsorption isotherm parameters. Overall mass-transfer and axial dispersion coefficients are estimated from eight sets of pulse, frontal and elution data at different concentrations and flow rates. The isotherm and mass-transfer parameters are used in the standing wave analysis to determine the zone flow rates and switching times for the two SMB units. Experimental column profiles, product purities, and product concentrations agree closely with simulation results. This method gives robust operation conditions for SMB systems with nonlinear isotherms, and optimal cycle time and zone flow rates for nonlinear systems without mass-transfer effects can be determined from the standing wave analysis.