| 混合整数非线性规划法求解多组分复杂体系相平衡问题 |
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| 引用本文： | 韦钦胜,安维中,胡仰栋,伍联营.混合整数非线性规划法求解多组分复杂体系相平衡问题[J].化工科技,2009,17(1). |
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| 作者姓名： | 韦钦胜 安维中 胡仰栋 伍联营 |
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| 作者单位： | 1. 海洋生态环境科学与工程国家海洋局重点实验室,山东,青岛,266061;国家海洋局第一海洋研究所,海洋生态研究中心,山东,青岛,266061
2. 中国海洋大学,海洋化学理论与工程技术教育部重点实验室,山东,青岛,266100 |
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| 摘 要： | 基于Gibbs自由能最小化原理,提出一种求解多组分复杂体系相平衡问题的混合整数非线性规划(MlNLP)方法.通过建立MlNLP模型,将相平衡计算问题转化为有约束的双层最优化问题,内层用来计算给定相组合结构下的平衡组成,外层则是搜索最优的相组合结构,整个求解过程通过遗传算法来实现.所建立的方法只需要求解最小化问题,就可以同时给出多相平衡时存在的相数、相态及各相组成.以苯-乙氰-水和甲醇合成两个体系的相平衡计算为例,结果表明该方法是可行和有效的.
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| 关 键 词： | 混合整数非线性规划 Gibbs自由能最小 相平衡 遗传算法 |
Calculation of phase equilibrium in multi-component complex system by using MINLP |
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| WEI Qin-sheng,AN Wei-zhong,HU Yang-dong,WU Lian-ying.Calculation of phase equilibrium in multi-component complex system by using MINLP[J].Science & Technology In Chemical Industry,2009,17(1). |
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| Authors: | WEI Qin-sheng AN Wei-zhong HU Yang-dong WU Lian-ying |
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| Affiliation: | 1.Key Laboratory of Marine Ecological and Environmental Science and Engineering;Qingdao 266061;China;2.Research Center of Marine Ecology;First Institute of Oceanography;SOA;3.Key Laboratory of Marine Chemistry Theory and Technology;Ministry of Education;Ocean University of China;Qingdao 266100;China |
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| Abstract: | Based on minimization of Gibbs free energy,Mixed-Integer Non Linear Programming(MINLP) is proposed for computing phase equilibrium in multi-component complex system.By establishing MINLP model,the computation of phase equilibrium is transformed into a constrained two-level minimization problem.On the inner level,equilibrium composition is computed;On the outer level,the optimum phase combination configuration is searched for.The whole solving process is achieved by Genetic Algorithm(GA).It is found that the... |
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| Keywords: | MINLP Minimization of Gibbs free energy Phase equilibrium Genetic algorithm |
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