空分变负荷联产调度问题研究

发布时间：2018-06-18 12:20

本文选题：空分装置 + 变负荷　；参考：《浙江工业大学》2014年硕士论文

【摘要】：生产调度能为企业带来明显的经济效益,基于数学规划的调度问题的建模与求解,是理论和应用研究的一个热点问题。本论文以钢铁企业用氧调度为背景,研究多个可变负荷的空分装置联产调度问题。本文研究工作主要包括以下三个方面： 1.现有的空分调度模型通常采用线性方程描述空分装置中各产品的比例关系,与变负荷装置中氧、氩、氮等产品的内在关系差别较大。因此本文引入变负荷空分装置机理方程,建立单台空分变负荷的非线性约束方程。 2.考虑到空分流程的复杂性及联产调度中存在等价设备的情况,选择资源任务网络作为建模方法,用以描述整个系统中可使用的设备情况及物料流股的流动方向,避免遗漏方程。然后以某钢铁企业为背景,建立空分联产变负荷调度模型。 3.通过人工调度仿真结果进行调度模型的参数估计,估算出管网氧气流量与压力关系式中的参数K。其次用仿真获得的氮气的产量与人工调度实际的氮气产量进行对比,验证模型中引入机理方程的准确性。最后求解以企业经济效益最大为目标的联产变负荷调度命题,分别以无放散,及放散量不受限制两种约束条件进行求解,求解结果优于人工调度,验证调度模型的有效性。
[Abstract]:Production scheduling can bring obvious economic benefits to enterprises. Modeling and solving scheduling problems based on mathematical programming is a hot issue in theory and application research. In this paper, based on oxygen scheduling in iron and steel enterprises, the co-generation scheduling problem of multiple air separation units with variable load is studied. The research work of this paper mainly includes the following three aspects: 1. The existing air separation scheduling models usually use linear equations to describe the proportion of each product in the air separation unit, which is different from the internal relationship of oxygen, argon, nitrogen and other products in the variable load plant. Therefore, this paper introduces the mechanism equation of the air separation unit with variable load, and establishes the nonlinear constraint equation for the variable load of a single air separation unit. 2. Considering the complexity of the air separation process and the existence of equivalent equipment in the joint production scheduling, the resource task network is selected as the modeling method to describe the available equipment and the flow direction of the material flow unit in the whole system, and to avoid the omission of the equation. Then, based on the background of a certain iron and steel enterprise, the model of combined air separation and variable load dispatching is established. 3. 3. The parameters of the scheduling model are estimated by artificial scheduling simulation results, and the parameters K in the relationship between oxygen flow and pressure are estimated. Secondly, the simulation results of nitrogen production are compared with the actual nitrogen production by manual scheduling to verify the accuracy of the mechanism equation introduced in the model. Finally, the proposition of cogeneration variable load scheduling, which aims at the maximum economic benefit of the enterprise, is solved with two constraints: no release and no restriction. The result is superior to that of manual scheduling, which verifies the validity of the scheduling model.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB497

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