共查询到16条相似文献,搜索用时 515 毫秒
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本文着重讨论了应用线性规划方法进行炼油厂生产计划优化,并对建立炼油厂生产系统的模型及主要性能指标作了详细的描述。实现模型的优化计算可在大型计算机上进行,也可在微机(如IBMPC/XT)上应用。 相似文献
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PIMS软件在炼油厂总加工流程优化中的应用 总被引:3,自引:1,他引:2
根据PIMS软件的功能和炼油厂的实际情况,系统分析了炼油厂优化的技术特点和对规划模型的需求,提出了炼油厂从原料到产品各个主要加工过程所需建模的方法,主要二次加工装置产品分布及性质与原料性质关系的Delta—Base模型和硫传递模型。通过某炼油厂的总流程优化设计实例说明了该规划模型的应用效果,同时提出了目前模型存在的不足及改进的建议。 相似文献
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采用氢气夹点分析方法,得到炼油厂氢气流股基本分配方案,然后与计划优化模型联合进行优化,确定优化的氢气管网方案,并对方案的经济技术指标进行分析,评价方案的有效性。以国内某炼油厂为例,采用上述方案对氢气系统进行优化。结果表明:采用夹点分析技术可以使氢气纯度满足炼油厂加工工艺要求,结合计划优化模型可以有效地根据炼油厂生产状况优化氢气网络结构,达到节氢及优化炼油厂原油加工方案的目的;氢气系统优化后可节约氢气16.6%,并可加工劣质原油、降低原油采购成本,提高炼油厂经济效益。 相似文献
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采用夹点分析与炼油厂计划优化模型相结合,利用夹点分析所得出的节氢量变化曲线、氢源变化曲线与计划优化模型绘制的利润曲线,分析加氢装置氢气的最优纯度。通过以5个月为周期实例计算,分析节氢量、氢源曲线与利润曲线的关系,可确定加氢装置最优氢气质量分数为0.28,日节氢量为46.3t,利润为15 988万元。此方法在保证装置平稳运行的情况下,可优化单装置氢气质量分数,节氢量与炼油厂利润达到最优。 相似文献
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完整的保温设计优化模型探讨 总被引:1,自引:1,他引:0
从有效能的概念出发推导出了①单层圆筒对象的保温厚度及管道公称直径优化计算式;②单层衬里管道的管径及衬里厚度优化计算式。该模型将同时得到经济流速、设备及管道最佳直径和经济保温厚度,可作为管道工艺设计的基础;对炼油厂重要管道进行了实例分析计算,结果表明,和现行经济保温厚度计算式相比保温材料可节约25%左右。 相似文献
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随着信息技术的发展,结合商务智能等信息技术的应用,打造智能数字化炼油厂将是未来炼油工业发展的重要趋势。介绍了数字化工厂的起源及发展现状,阐述了数字化工厂技术在炼油企业的实现方式,总结了数字化炼油厂的基本特征、体系结构、应用架构、模型资源库等内容。介绍了现阶段支撑数字化炼油厂的关键技术,包括虚拟现实、数字化仿真和优化、基于SOA(面向服务的架构)和BPM(业务流程管理)的集成、物联网等技术,并列举了数字化炼油厂在三维工厂、数字化设计、生产运营、移动巡检、知识管理等领域的应用案例。 相似文献
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炼厂氢气网络的夹点分析及优化 总被引:1,自引:0,他引:1
中国石油大连西太平洋石油化工有限公司是全加氢型炼油厂,原油加工能力10 Mt/a,其中含硫油加工比例约90%,其产品全部需要加氢精制。因此,通过技术分析和适当改造,对氢气系统进行优化和合理利用,对节能降耗具有重要意义。应用夹点技术对WEPEC氢气网络进行了分析,得出理论最大可回收利用的氢气量为19.22dam3/h。通过优化加氢装置氢源、优化制氢装置配氢的组成及用量、增加氢气提纯设施等,实际回收利用氢气17dam3/h,占原新氢用量的14.4%,取得了较为明显的经济效益。 相似文献
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Refineries’ production plan modeling with simple planning models such as the fixed yield planning models fail to reflect the operating conditions of the processing units. In this work, an integrated optimization strategy including production planning optimization, search of operating parameters and the operation optimization of fluidized catalytic cracking (FCC) units was proposed. The solution of optimal integration was validated by case studies of a monthly plan for a whole refinery, which included three FCC units. The results indicated that the optimization strategy was efficient in determining a practically executed optimal plan and corresponding operating conditions of FCC units. The integrated refinery planning model predicted higher profit and could provide the feasible or optimal FCC operation conditions. 相似文献
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蒸汽是影响全厂能耗的主要因素,蒸汽系统优化是炼油厂节能降耗的重点.某炼油厂单系列千万吨级炼油项目通过不断实施优化技术和管理措施,对全厂蒸汽系统持续优化,节能成效明显,取得了良好的经济效益.该厂通过实施催化裂化装置余热锅炉改造、优化流程提高热供料温度、降低汽轮机背压蒸汽压力、优化塔的工艺参数、优化动力锅炉运行方式等措施,节约蒸汽83.9 t/h,创造经济效益2.08×10^8 RMB¥/a,炼油蒸汽单耗由2009年的64.7 kg/t降至34.5 kg/t,降幅达46.67%,全厂炼油实际能耗降低108.02 MJ/t,实际综合能耗由2009年的2 830.41MJ/t降低至2 392.45MJ/t,降幅为15.47%. 相似文献
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Tareq A. Albahri Ghanima Al-Sharrah Ali Elkamel 《Petroleum Science and Technology》2019,37(3):275-281
This paper presents a model-based optimization approach to design a grassroots petroleum refinery for heavy oil processing including residue treating and upgrading. The focus is to determine an optimal refinery configuration to produce light products from an atmospheric residue stream. The proposed linear model can consider a large number of heavy oil processing technologies (more than 70) including multiple operating modes to arrive at a configuration that meets an objective of maximizing profit or a certain fuel type production. Computational results show trends in agreement with real-world practice for residuum refining applications, thus contributing to substantiating practicality of the approach. 相似文献
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Crude oils are composed of hundreds of different hydrocarbon molecules, which are separated through the process of refining and small quantities of oxygen, sulfur, nitrogen, vanadium, nickel, and chromium. An oil refinery is a group of manufacturing plants that are used to separate petroleum into valuable fractions. Oil refining is one of the most complex chemical industries, which includes many different and complex processes with several possible connections. In the process of distillation, crude oil is heated in a furnace so that hydrocarbons can be separated via their boiling point. The main purposes of crude oil blending are to optimize commercial value, to upgrade or reduce oil consumption to meet specifications and to facilitate oil movement. Simulation software, such as linear programming modeling, is often used to estimate the rate components that provide a low cost mix. The aim of blending of crude oils and refinery products is to increase the refined margins without affecting the required physical properties of the blends. The optimization of in crude oil blends and maximization of low-cost refinery intermediates in final blends are the basic processes for achieving this goal of using cheap crude oils. The highest degree of blending optimization requires continuous updating of the simulation model by adapting to real-time analytical trends. 相似文献