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随着电厂自动化水平越来越高,传统的离子交换工艺已经无法满足更高程度的自动化要求,现在很多新建电厂都会选择自动化程度更高、需要值守人员更少、人员操作更简单的全膜处理工艺来设计锅炉补给水处理系统。本文以某350 MW循环流化床电厂锅炉补给水处理系统为例,详细描述了锅炉补给水处理系统全膜处理工艺的调试全过程和调试过程中出现的问题以及处理方法,并深入描述了锅炉补给水处理系统全膜处理工艺全自动控制方式。 相似文献
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本文根据国内循环冷却水处理的实际情况和电厂循环冷却水处理的特点,针对目前存在的问题,提出了一种加酸与聚合磷酸盐的联合处理工艺。这种处理工艺,不仅可节约大量水量、节省运行费用,而且设备简单,操作容易,是目前适合于电厂循环冷却水处理的一种较好的工艺。 相似文献
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当前中国燃煤发电量仍占总发电量很大比重,燃煤电厂会产生大量的氮氧化物,其会对人体和环境造成危害。因此,处理好燃煤电厂产生的氮氧化物十分重要。选择性催化还原(SCR)技术是控制氮氧化物排放的重要手段。而作为该技术的核心,大量的钒钛基SCR催化剂被应用到燃煤电厂氮氧化物的处理工艺中,对废弃的SCR催化剂进行妥善处理也成为了急需解决的问题。本文对相应背景下的文献进行了系统整理,介绍了催化剂再生处理工艺以及有价金属回收技术的最新研究,分析了与再生处理工艺以及有价金属回收技术优化相关的挑战,提出了有关如何开发高效催化剂再生处理工艺以及有价金属回收技术的建议,以推动该方向的进一步研究。 相似文献
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分析了国内燃煤电厂及煤矸石电厂锅炉烟气排放现状和存在的问题 ,针对本厂特点 ,选用了高压静电除尘、石灰石 -石膏法脱硫、水力除尘清灰闭路循环等烟气治理工艺 ,改造原有的烟气处理工艺 ,取得了令人满意的效果。 相似文献
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核电专用涂层应用分析 总被引:5,自引:1,他引:4
介绍了核电站专用涂层性能要求和性能试验的相关标准。分析了核电站专用涂层的技术现状和应用状况。概括了美国核电专用涂料、秦山一期核电专用涂料和大亚湾核电专用涂料主要类型。提出国内核电专用涂层的发展要求。 相似文献
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石化企业装置蒸汽动力系统通常独立设计和操作,忽视了与热电厂蒸汽动力系统的联系。热电厂蒸汽动力系统通常在固定的蒸汽和电力需求下进行优化,忽视了与装置蒸汽动力系统的联系。为实现石化企业蒸汽动力系统的全局优化,本文提出了用于装置蒸汽动力系统与热电厂运行同步优化的方法。首先使用热电厂透平和锅炉的设计及运行数据回归得到设备模型系数,依照现有结构建立热电厂蒸汽动力系统约束。然后以装置蒸汽动力系统设计和操作灵活性为区分,将装置分为三类:第一类装置蒸汽和电力需求无法调节;第二类装置可以通过减温减压调节蒸汽需求;第三类装置既可以通过减温减压调节蒸汽需求,也可以通过驱动选择调节热电需求。装置透平模型参数采用文献值,通过采集各类装置蒸汽和电力需求等数据建立装置蒸汽动力系统约束,最后通过热电厂与装置蒸汽和电力的连接关系建立耦合模型。耦合模型以年度费用为目标函数,其中包括热电厂运行费用以及装置透平和电机的年度投资费用,通过优化求解得到热电厂设备负荷分配方案以及装置蒸汽动力系统设计方案。通过算例论证了同步优化方法的可行性,与独立优化相比,同步优化降低年度费用451万美元。 相似文献
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Comparative economic analysis is presented which shows necessity of integrated power and desalination plants optimization rather than separate optimization of power generating and desalination units. This paper introduces:- Calculational procedure and resulting curves for cogeneration plant selection for a range of power and steam demands.- Conceptual procedure for integrated power plant and desalination plant system optimization.- Results of comparative economic analysis of integrated power/ desalination plant optimization as compared with separate power plant and desalination plant optimization. 相似文献
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配置有水泥余热电站的水泥企业,生产过程中会遇到电网供电事故的发生。在分析水泥企业供电特点和孤网运行必要性的基础上,结合其他行业自备电厂机组孤网运行的特点和效果,分析介绍了水泥余热电站机组孤网运行的控制方式,并简要介绍了印度ACC项目2 500 t/d生产线余热电站孤网运行的实施及效果。实践证明:水泥余热电站机组具一定的孤网运行能力,可成为水泥企业应对电网事故的有效手段。 相似文献
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通过对石化企业自备电厂用排水状况的调查,并借鉴电力公司火电厂用水统计方法,提出了石化企业自备发电厂用水单耗的统计方法,针对石化企业电厂用水状况,提出了电厂用排水流程和确实可行的节水措施。 相似文献
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Sajad Khamis Abadi Mohammad Hasan Khoshgoftar Manesh Marc A. Rosen Majid Amidpour Mohammad Hosein Hamedi 《中国化学工程学报》2014,22(4):455-468
A steam power plant can work as a dual purpose plant for simultaneous production of steam and elec-trical power. In this paper we seek the optimum integration of a steam power plant as a source and a site utility sys-tem as a sink of steam and power. Estimation for the cogeneration potential prior to the design of a central utility system for site utility systems is vital to the targets for site fuel demand as well as heat and power production. In this regard, a new cogeneration targeting procedure is proposed for integration of a steam power plant and a site utility consisting of a process plant. The new methodology seeks the optimal integration based on a new cogenera-tion targeting scheme. In addition, a modified site utility grand composite curve (SUGCC) diagram is proposed and compared to the original SUGCC. A gas fired steam power plant and a process site utility is considered in a case study. The applicability of the developed procedure is tested against other design methods (STAR? and Thermoflex software) through a case study. The proposed method gives comparable results, and the targeting method is used for optimal integration of steam levels. Identifying optimal conditions of steam levels for integration is important in the design of utility systems, as the selection of steam levels in a steam power plant and site utility for integration greatly influences the potential for cogeneration and energy recovery. The integration of steam levels of the steam power plant and the site utility system in the case study demonstrates the usefulness of the method for reducing the overall energy consumption for the site. 相似文献
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Significance of chemical engineering for advanced power generation technologies . The demands placed on power plant engineers have altered with the introduction of advanced technologies of power generation, with the classical physical areas of work being increasingly augmented by tasks requiring considerable knowledge of chemical engineering. This change began with the introduction of the desulphurization of flue gases in fossil-fuel fired power plant and continued steadily with the further development of environmental protection requirements. In addition, demands for reduction of emission in connection with high fuel prices led to the development of new power plant technologies permitting better utilization of input energy. With the aid of examples taken from the whole field of advanced powerplant technology and which range from development and design of non-polluting and more efficient power plant processes to questions of disposal of power plant by-products it is shown to what extent conventional powerplant engineering is pervaded by chemical engineering questions. 相似文献
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介绍废热发电在硫酸装置中的重要作用与价值,论述硫酸装置废热发电自保运行的可行性。对于发电容量大于用电负荷的装置,当外电网断电时,废热发电机组可起到相对“独立”电源的作用,维持硫酸装置的正常生产;对于发电容量略小于用电负荷的装置,当外电网断电时,可通过调整工艺负荷实现装置的自保运行。由于废热发电系统的不稳定性和相对不可调节性,废热发电自保运行不应作为硫酸装置的主要供电方式,只有在电力供应相对紧张的地区才可适当采用。论述了硫酸废热发电自保运行在设计中需注意的几个问题。 相似文献
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The optimal process design of a dual purpose plant for producing power and water is investigated. A nuclear reactor and steam turbine power generator for steam and power production is coupled with two water plants, a multi-stage flash plant and a reverse osmosis plant. The total system cost for producing given levels of power and water is minimized. Optimal designs are presented for several combinations of water and external power demands ranging from 25 mgd to 150 mgd and from 50 MWe to 200 MWe. 相似文献