Simulated moving bed technology is applied in the field of pharmaceutical, petrochemical and fine chemistry. It shows capability in separating multicomponent mixtures up to high purities. In this work, an attempt was made to optimize the production of 1,1-diethoxybutane (DEB), using the simulated moving bed technology. A fixed bed model is made with good agreement with experimental results. This fixed bed model was expanded to a simulated moving bed model. This model was used to determine the optimum conditions regarding the switching time and flowrates in each section. From this model, the optimum switching time was found to be 2.4 min, and the ratio of liquid flowrate over the solid flowrate was found to be 4.24, 1.77, 3.03 and 1.35, respectively. Under those conditions, the productivity was 19.8 kg DEB per liter of adsorbent per day, and the desorbent consumption was 6.1 L of ethanol per kg of DEB. The results were obtained with a minimum purity of the extract and raffinate of 97%.

中文翻译：

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模拟移动床反应器生产1,1-二乙氧基丁烷的工艺优化

模拟移动床技术已应用于制药，石化和精细化学领域。它显示了分离高纯度多组分混合物的能力。在这项工作中，尝试使用模拟移动床技术优化1,1-二乙氧基丁烷（DEB）的生产。制作的固定床模型与实验结果吻合良好。将该固定床模型扩展为模拟移动床模型。该模型用于确定关于每个部分的切换时间和流量的最佳条件。根据该模型，发现最佳切换时间为2.4分钟，液体流量与固体流量之比分别为4.24、1.77、3.03和1.35。在这些条件下，生产率为每天每升吸附剂19.8千克DEB，每公斤DEB的解吸剂消耗量为6.1升乙醇。提取物和萃余液的最低纯度为97％，所获得的结果。