Batch distillation is widely applied in the fine chemical industry due to the market demand for low-volume and high-value-added products. Heterogeneous ternary mixtures with two minimum boiling azeotropes, such as cyclohexane-acetonitrile-toluene, are common in production processes. However, the separation of a mixture based on batch distillation was rarely studied because of the complexity of the method. In this work, a double-column batch stripper (with a decanter) process with a processing capacity of 7200 kg was designed for the separation of a cyclohexane-acetonitrile-toluene ternary mixture by considering the heterogeneous properties of the components. The feasibility of the process was analyzed according to the phase diagram, and the production sequence was determined. The pressure of the columns and the decanter temperature were determined synthetically from the minimum total annual cost, operation time and recovery ratio. The production time of different components, which has significant impacts on the purity and yield, was determined. In view of the situation that two separated components would be successively obtained at the bottom of each column, a control strategy was designed which can switch the products vessels automatically and control the batch distillation process. The results show that the control structure exhibits a good controllability, and the purities of the separated products are all over 99.9 mol%. Based on the optimal batch distillation process, the environmental impacts of the process were calculated. The results of the environmental analysis show that the global warming potential (GWP), acid potential (AP) and human toxicity potential (HTP) are 8613.91 kg CO₂ eq, 15.40 kg SO₂ eq and 267.21 kg DCB eq, respectively.

由于对小批量和高附加值产品的市场需求，间歇蒸馏已广泛应用于精细化工行业。具有两个最低沸点共沸物的异质三元混合物，例如环己烷-乙腈-甲苯，在生产过程中很常见。然而，由于该方法的复杂性，很少研究基于间歇蒸馏的混合物的分离。在这项工作中，设计了一种具有7200 kg处理能力的双塔间歇式汽提塔（带倾析器）工艺，通过考虑组分的异质性来分离环己烷-乙腈-甲苯三元混合物。根据相图分析了该方法的可行性，并确定了生产顺序。色谱柱的压力和can析器的温度是根据最小的年度总成本，操作时间和回收率综合确定的。确定了不同组分的生产时间，这对纯度和产量有重大影响。鉴于在每个塔的底部将连续获得两个分离的组分的情况，设计了一种控制策略，该策略可以自动切换产品容器并控制间歇蒸馏过程。结果表明，控制结构具有良好的可控性，分离出的产物纯度均在99.9mol％以上。基于最佳的间歇蒸馏过程，计算了该过程的环境影响。环境分析结果表明，全球变暖潜能值（GWP）₂ eq，15.40 kg SO ₂ eq和267.21 kg DCB eq。