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Nayef Ghasem 《European Journal of Engineering Education》2016,41(4):455-467
This paper illustrates a teaching technique used in computer applications in chemical engineering employed for designing various unit operation processes, where the students learn about unit operations by designing them. The aim of the course is not to teach design, but rather to teach the fundamentals and the function of unit operation processes through simulators. A case study presenting the teaching method was evaluated using student surveys and faculty assessments, which were designed to measure the quality and effectiveness of the teaching method. The results of the questionnaire conclusively demonstrate that this method is an extremely efficient way of teaching a simulator-based course. In addition to that, this teaching method can easily be generalised and used in other courses. A student's final mark is determined by a combination of in-class assessments conducted based on cooperative and peer learning, progress tests and a final exam. Results revealed that peer learning can improve the overall quality of student learning and enhance student understanding. 相似文献
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二甲醚生产过程甲醇回收塔的计算机优化 总被引：2，自引：0，他引：2
采用Aspen Plus模拟软件对DME生产流程进行了模拟,并对甲醇回收精馏塔的操作条件进行了优化。结果发现,当塔顶压力为1．3bar,塔底压力为1．6bar时,优化计算得到最佳理论板数为25,最佳回流比为1．22,最佳进料塔板为17。在最佳条件下操作。甲醇回收率为99．95％,甲醇纯度为99％以上,达到了优化目标。通过优化,减少了理论板数,可减少设备投资;降低了塔的回流比,可降低操作费用。 相似文献
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DMF萃取精馏法精制乙酸乙酯的过程模拟研究 总被引：1，自引：0，他引：1
本文利用化工流程模拟软件AspenPlus采用萃取精馏,以DMF为萃取剂,对乙酸乙酯生产中的产品精制进行了模拟计算,详细分析了理论板数、进料位置、溶剂比和回流比对产品浓度的影响。结果表明,最优工艺方案为：理论板数40,粗酯进料位置29,萃取剂进料位置6,溶剂比1.6,回流比2.0,塔顶产品乙酸乙酯含量达到99.9%,质量达到GB/T3728-2007优等品标准,为分离过程的优化操作和设计提供依据。 相似文献
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分析了广东众和化塑有限公司分馏装置现状,针对混合芳烃加工损失率高、分馏效果不理想等问题,根据Aspen软件模拟计算结果,提出了工艺改造建议. 相似文献
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This study proposes a model of syngas production from municipal solid waste （MSW） gasification with air in fixed bed reactors. The model （using Aspen plus simulator） is used to predict the results of MSW gasification and to provide some process fundamentals concerning syngas production from MSW gasification. The effects of gasification temperature, air equiva- lence ratio and moisture concentration on the composition of syngas, lower heating value （LHV） of syngas, heat conversion efficiency, and carbon conversion are discussed. The results indicate that higher temperature improves gasification, and higher air equivalence ratio increases the carbon conversion while decreasing syngas LHV. Heat conversion efficiency increases and reaches the maximum and then decreases with the increase of air equivalence ratio. Higher moisture concentration increases the carbon conversion and increases the heat conversion efficiency at lower ratios. Higher temperature and a lower equivalence ratio are favorable for obtaining a higher LHV of syngas at the same moisture concentration. 相似文献
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利用N-甲基甲酰胺（NMF）作萃取剂,萃取精馏分离醋酸和水混合物。利用Aspen Plus流程模拟软件对分离过程进行了模拟计算,确定了理论板数、加料板位置、回流比、加料比等最佳工艺条件及工艺参数。结果表明,利用NMF作萃取剂可以较好的实现醋酸和水的分离,醋酸的纯度可达99.94%,萃取剂可以循环利用;与普通精馏法相比,相同分离任务下,萃取精馏工艺的再沸器热负荷降低了60.4%,生产每吨醋酸再沸器消耗蒸汽量由7.1吨降低到2.8吨。说明萃取精馏法分离醋酸和水优于普通精馏法,节能效果明显,为工业化装置提供了重要的理论依据和设计参考。 相似文献
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为有效减小自然复叠制冷系统匹配和调试实验工作量,引入在化工领域常用的大型流程模拟软件AspenPlus软件进行自然复叠制冷系统的过程模拟。模拟和实验数据的比较表明,该软件具有较好的模拟效果,可有效减小实验工作量。 相似文献
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气相甲醇合成二甲醚生产过程优化研究(Ⅰ)--二甲醚分离塔的计算机优化 总被引：2，自引：0，他引：2
龚盛昭 《广东轻工职业技术学院学报》2004,3(1):6-8
采用AspenP1us模拟软件对二甲醚（DME）生产流程进行了模拟,并对DME分离塔的操作条件进行了优化。当塔顶压力为8．3bar,塔底压力为8．5bar时,计算得到最佳理论板数为20,最佳回流比为0．521,最佳进料塔板为8。在最佳条件下操作,DME回收率为99．8％,DME纯度为99．95％以上,达到了优化目标。 相似文献