| 多效干燥过程的排产调度优化 |
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| 引用本文： | 李红,伍联营,商凤英,吕世强,胡仰栋. 多效干燥过程的排产调度优化[J]. 化工学报, 2012, 63(7): 2136-2142. DOI: 10.3969/j.issn.0438-1157.2012.07.020 |
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| 作者姓名： | 李红 伍联营 商凤英 吕世强 胡仰栋 |
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| 作者单位： | 中国海洋大学化学化工学院 |
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| 摘 要： | 针对干燥过程是一个高能耗的间歇单元操作，对多效干燥过程进行了排产调度研究。根据干燥速率曲线，将各效干燥过程设计为等操作时间，建立了多效干燥过程排产调度的优化模型。以效数和干燥器干燥时间为决策变量，以年费用最小为目标表达为一个混合整数非线性规划（MINLP）的数学模型，利用GAMS进行求解。以淤泥1～5效干燥为算例进行了优化调度分析，结果表明：在4效时年费用最小；与1效干燥相比，在最优条件下年生产费用可节约26%。同时获得了最优排产调度的Gantt图，从而可以得出干燥设备的最小操作周期，据此对多效干燥过程进行排产，使间歇多效干燥过程可以实现连续化生产，对多效干燥的工业化具有一定的意义。
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| 关 键 词： | 多效干燥 间歇过程 排产调度 优化 MINLP |
| 收稿时间： | 2011-12-11 |
| 修稿时间： | 2012-02-28 |
Optimal plan and scheduling of multi-stage drying system |
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| LI Hong , WU Lianying , SHANG Fengying , L Shiqiang , HU Yangdong. Optimal plan and scheduling of multi-stage drying system[J]. Journal of Chemical Industry and Engineering(China), 2012, 63(7): 2136-2142. DOI: 10.3969/j.issn.0438-1157.2012.07.020 |
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| Authors: | LI Hong WU Lianying SHANG Fengying L Shiqiang HU Yangdong |
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| Affiliation: | LI Hong , WU Lianying , SHANG Fengying , L(U) Shiqiang , HU Yangdong |
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| Abstract: | Because industrial drying is one of the most energy-intensive batch unit operations,a scheduling plan of multi-effect drying was studied.Based on the rate of drying curve,operation time in each effect of multi-effect drying process was designed to be the same.An optimal plan and scheduling of multi-effect drying model was established.Defining the number of effects and the drying time as the decision variables,the minimum annual cost model of the batch n-effect drying process could be expressed as a mixed-integer non-linear programming(MINLP)problem,which could be solved by the GAMS software.An example of slit drying process(effect from 1 to 5)was analyzed with the model.The results indicated that the 4-effect drying was the optimal,and it could save 26% of the cost each year compared to the 1-effect drying.Optimal Gantt chart of scheduled process was also presented.According to the Gantt chart,the least period and the optimal operation process could be determined.It indicated that the batch multi-effect drying process could achieve continuous production. |
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| Keywords: | multi-effect drying batch process plan and scheduling optimization MINLP |
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