排序方式: 共有52条查询结果,搜索用时 20 毫秒
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过程工业水分配网络系统集成的NLP模型 总被引:1,自引:0,他引:1
针对单组分杂质用水和废水处理网络同步集成最优化问题,以最小总操作费用为目标,建立了非线性规划(NLP)模型。该模型既考虑了新鲜水费用和水处理费用之间存在的耦合关系以实现二者的优化均衡,又考虑了环境排放标准及分散式处理网络对水网络集成的影响。采用商业优化软件GAMs对算例问题进行求解,结果表明本文提出的模型能有效处理工业水分配网络系统的优化集成问题,与用水网络和废水处理网络分别集成相比,在年总费用上有不同程度的减小,较好地实现了过程工业在满足环保排放规定前提下的经济效益最大化。 相似文献
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针对三组元精馏系统结构的优化合成,提出一种数据驱动的基于信息熵最小化的分类回归决策树(CART)模型。三组元精馏优化数据采用文献中严格模拟优化的结果,数据包含4种三组元混合物、34种进料组成以及7个候选精馏序列结构的最优化设计结果,生成数据集用来训练CART决策树。由决策树训练结果给出了三组元精馏结构最优设计决策规则,模型测试结果显示本文提出的决策树模型对数据集范围内三组元物系精馏结构决策的准确率为88.2%,同时表明了影响三组元最优精馏序列的主要影响因素及其重要性。 相似文献
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Synthesis of Water Utilization System Using Concentration Interval Analysis Method ( Ⅰ ) Non-Mass-Transfer-Based Operation
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A strategy for water and wastewater minimization is developed for continuous water utilization systems involving fixed flowrate(non-mass-transfer-based)operations,based on the fictitious operations that is introduced to represent the water losing and/or generating operations and a modified concentration interval analysis(MCIA) technique.This strategy is a simple,nongraphical,and noniterative procedure and is suitable for the quick yields of targets and the identification of pinch point location.Moreover,on the basis of the target method,a heuristic-based approach is also presented to generate water utilization networks,which could be demonstrated to be optimum ones. The proposed approaches are illustrated with example problems. 相似文献
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A strategy for water and wastewater minimization is developed for continuous water utilization systems involving fixed flowrate(non-mass-transfer-based)operations,based on the fictitious operations that is introduced to represent the water losing and/or generating operations and a modified concentration interval analysis(MCIA) technique.This strategy is a simple,nongraphical,and noniterative procedure and is suitable for the quick yields of targets and the identification of pinch point location.Moreover,on the basis of the target method,a heuristic-based approach is also presented to generate water utilization networks,which could be demonstrated to be optimum ones. The proposed approaches are illustrated with example problems. 相似文献
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针对苯-甲苯和丙烯-丙烷物系,模拟分析了压缩比、进料状态及换热量分布方式对理想内部能量集成精馏塔的操作特性、所需塔内换热面积及节能效果的影响。将模拟结果与传统精馏塔及热泵精馏塔进行比较,结果显示内部能量集成精馏塔的节能效果对于不同物系有较大差别。对苯-甲苯物系,热泵精馏塔的节能效果最好,节能百分率为40%。对丙烯-丙烷物系,理想内部能量集成精馏塔的节能优势明显,节能百分率在60%~80%。本文提出了内部能量集成精馏塔热温匹配的换热量分布方式。模拟结果表明,达到同样节能效果,采用热温匹配的换热量分布方式可以在压缩比较小时大幅度减小传热面积。采用热温匹配的换热量分布方式可以在压缩比较小时大幅度减小传热面积。 相似文献
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A new operation policy--quasi-batch distillation for recovering infinitesimal amounts species existing in a mixture is presented. In quasi-batch distillation operation, feed is introduced with a constant flow rate onto the feed stage of the column, and the flow rate of the distillate is the same as that of the feed, whereas the bottom product is withdrawn periodically. The behavior of quasi-batch distillation is simulated and analyzed through an example on heavy water separation. Comparing with continuous or batch distillation, the new operation policy is more reliable and efficient to achieve higher recovery of dilute component. This is especially suitable for separating small amount of precious species from large amount of raw material. 相似文献