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随着电力供应状况的改善,中,小型凝汽式汽轮机因效率低而将逐步被淘汰,本文结合运行实践,对凝汽式汽轮机改造为热电联产机组进行讨论,为同类同组适应能源政策,由单一的发电转变为热电联产提供参考。 相似文献
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本文主要分析了300MW汽轮机、锅炉主设备的现状与存在的主要问题。分别论述改造依据,并提出相应的技术改造方案。对改造前后的性能和效益亦进行了分析比较。总结了十一五期间节能改造后显著的能耗下降成果,分析了十二五节能减排任务的重要性和艰巨性,并提出合理节能工作规划,重点拓展区域性供热。 相似文献
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火力发电厂是一个复杂的热力系统,其运行经济性不仅取决于主机效率,同时还与热力系统中辅机的配置,运行方式和效率相关.除氧器是汽轮机发电机组回热系统中的一种重要的辅助设备,如何提高除氧器的经济性是一个综合性的问题,它体现在除氧器的设计、安装、运行、监督和保养等方面.文中主要介绍提高除氧器效率的相关途径,对除氧器最优经济运行具有一定的指导意义. 相似文献
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煤气化工艺节能减排的技术在造气工艺流程中,利用新技术改造低效率换热设备及落后工艺,提高水的重复利用率,将含氰污水处理装置改造为全循环技术以减少排污总量,集中阐述了煤气炉洗涤循环水减排技术吹风气加收节能技术。 相似文献
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300MW汽轮机扩容改造及经济效益分析 总被引:1,自引:0,他引:1
徐州彭城电厂#1、#2机组,在2007年9月到10月进行了增容改造。改造后,两台机组均能在320MW工况下长期、稳定、安全运行节能效果显著。本文结合改造经验,针对改造措施及效果进行分析。 相似文献
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The diffusion of cogeneration and trigeneration plants as local generation sources could bring significant energy saving and emission reduction of various types of pollutants with respect to the separate production of electricity, heat and cooling power. The advantages in terms of primary energy saving are well established. However, the potential of combined heat and power (CHP) and combined cooling heat and power (CCHP) systems for reducing the emission of hazardous greenhouse gases (GHG) needs to be further investigated. This paper presents and discusses a novel approach, based upon an original indicator called trigeneration CO2emission reduction (TCO2ER), to assess the emission reduction of CO2 and other GHGs from CHP and CCHP systems with respect to the separate production. The indicator is defined in function of the performance characteristics of the CHP and CCHP systems, represented with black-box models, and of the GHG emission characteristics from conventional sources. The effectiveness of the proposed approach is shown in the companion paper (Part II: Analysis techniques and application cases) with application to various cogeneration and trigeneration solutions. 相似文献
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This paper provides a set of specific examples to show the effectiveness of the trigeneration CO2emission reduction (TCO2ER) indicator proposed in the companion paper (Part I: Models and indicators) to assess the greenhouse gas (GHG) emission reduction from cogeneration and trigeneration systems. Specific break-even analyses are developed by introducing further indicators, with the aim of assessing the conditions for which different types of combined systems and conventional separate production systems are equivalent in terms of GHG emissions. The various emission indicators are evaluated and discussed for a number of relevant application cases concerning cogeneration and trigeneration solutions with different types of equipment. Scenario analyses are carried out to assess the possible emission reduction benefits from extended diffusion of cogeneration and trigeneration in regions characterized by different energy generation frameworks. The results strongly depend on the available technologies for combined production, on the composition of the energy generation mix, and on the trend towards upgrading the various generation systems. The numerical outcomes indicate that cogeneration and trigeneration solutions could bring significant benefits in countries with prevailing electricity production from fossil fuels, quantified by the use of the proposed indicators. 相似文献