1000 MW级核电站大型除氧器选型分析

介绍了核电站广泛使用的两类原理和结构不同的除氧器,详细分析和论证了其各自的优缺点后指出,淋水盘式除氧器在加热性能上略优于鼓泡管式除氧器,除氧性能两者相当,而鼓泡管式除氧器则在特殊工况下的运行稳定性和维护保养的便利性方面稍优于淋水盘式除氧器.提出了核电站大型除氧器的合理选型原则.     

景德镇电厂除氧器的技术改造

叙述了江西景德镇电厂采用一种新型旋膜式除氧器对喷雾式除氧器的更新改造情况,介绍了旋膜式除氧器的结构特点,分析了它的除氧机理。通过性能试验证明了新型旋膜式除氧器性能优越,效果很好,值得大力推广。     

电厂除氧器焊缝裂纹补焊修复

针对某电厂除氧器水箱焊缝发现的裂纹问题，较全面地分析了裂纹产生的原因；并采用冷焊工艺进行了缺陷的补焊修复，为同类压力容器裂纹缺陷的补焊修复提供了可借鉴的经验。     

电厂弹簧喷嘴除氧器设计和应用

从理论和实验数据上分析了弹簧喷嘴除氧器器能适应变负荷大容量生产要求的原理，从而进一步提出了在设计弹簧喷嘴时传热系数Ｋ的计算与淋水盘等老式除氧器设计的不同，提出了比较适合于弹簧喷嘴的传热系数公式。     

电厂除氧器泄漏原因分析

热疲劳是材料常见的失效形式之一,但引起疲劳的外界条件却存在着较大的不同。介绍了除氧器的取样管由于机组启停造成的热应力变化引起的热疲劳,详细介绍了对取样管材的试验,以试验结果数据为依据,对除氧器泄漏原因进行了分析。     

萧山电厂除氧器和凝结水水位智能控制

中小型机组的除氧器和凝汽器水位通常采用单回路ＰＩＤ调节。由于两水位间存在密切的耦合关系 ,因此 ,这种调节系统往往无法长期投入自动运行 ,而采用智能控制技术 ,为除氧器和凝汽器的水位联合控制提供了新的途径。除氧器水位和凝汽器水位是一个多变量控制对象 ,凝结水流量同时影响除氧器和凝汽器水位。除氧器水位受给水流量与凝结水流量的影响 ,凝汽器水位取决于凝结水流量与凝汽量和锅炉补给水量的平衡。在负荷变化不大时 ,凝汽量基本不变 ,凝汽器水位取决于凝结水流量与锅炉补给水量的平衡。由于锅炉补给水流量只有凝结水流量的 1/2 ,故…     

华能北京热电厂俄罗斯生产的除氧器安全阀故障及改造

本文通过对华能北京热电厂俄罗斯生产的除氧器安全阀故障的分析及改造设计 ,详细分析了除氧器安全阀的正确选型及布置方法 ,确保除氧器的安全运行     

珠海电厂进口除氧器安全阀设置合理性分析

在对照在我国腾规程和ＡＳＭＥ规范的基础上,对珠海电厂进口除氧器安全阀设置的合理性作了分析。     

新型内置式无头除氧器在电厂中的应用

在介绍火电厂除氧器应用现状基础上，介绍了内置式无头除氧器的工作原理和特点，并对内置式无头除氧器和常规除氧器的性能特点进行了对比，提出了使用这种新型除氧器的建议。     

Municipal sewage first used in thermal power plants

Based on a research result of North China Electric Power Design Institute Co. Ltd under China Power Engineering Consulting Group, Huaneng Beijing Cogeneration Plant first adopted municipal sewage as feed water of circulating cooling system. The source of water is secondary sewage from Gaobeidian Sewage Treatment Plant. The main processes are     

发电厂状态检修中的油液特种分析接术

油液分析技术较多应用于从状态检修的角度对电厂用油设备的油液运行状况做出定量、定性两方面分析，以检测结果为依据评价设备运行状态并预测设备故障的可能性和趋势。其中光谱分析技术主要关注油液中各类元素含量提供的信息，而铁谱分析技术则注重从油液中含有的颗粒的形态及数量中获取定性结论。介绍油液分析技术的这两大主要检测手段的工作原理，列举了部分实践中积累的油液监测结果与设备状态信息间的对照关系，并用实例说明如何在实际工作中切实应用该技术为设备安全运行服务。     

垃圾焚烧发电中烟气净化系统的选择与分析

针对我国城市生活垃圾的组成、垃圾焚烧烟气中污染物的组成及排放标准，介绍垃圾焚烧发电厂典型烟气吸收净化工艺及其对比，分析和对比电除尘器和袋式除尘器的性能特点，并给出垃圾焚烧发电中几种烟气净化工艺组合系统及其选用原则。     

电站用T91钢的性能及焊接

从化学成分，合金化原理，室温力学性能，高温力学性能，焊接接头的微观特点，焊接裂纹敏感性等几个方面系统介绍了T01钢的研究现状，并指出掌握T91钢的焊接和高温运行行为，克服其焊缝韧性劣化倾向及HAZ蠕变断裂强度下降，以充分发挥母材潜力，是T91钢的焊接研究急需突破的技术难题和紧迫任务。     

国产电厂水处理用离子交换树脂现状综述

从国内生产能力、品种、规程、质量、包装、标准、性能检测、报废原则等多个方面介绍国产水处理用离子交换树脂的发展现状，提出存在的问题和与国外的差距，指出今后离子交换树脂生产和研究的发展方向。     

Ethanol used as an environmentally sustainable energy resource for thermal power plants

Justification of using renewable energy sources and a brief analysis of their application prospects is given. The most common renewable energy sources for mobile thermal power plants are presented. The possibilities and ways of using ethanol as an energy source for such plants with diesel engines are analyzed. It is shown that it is feasible to add small amounts of ethanol to oil diesel fuel (DF) for obtaining an environmentally sustainable energy source for diesel engines. Therewith, a stable mixture of components can be obtained by adding anhydrous (absolute) ethanol to the oil fuel. The authors studied a mixture containing 4% (by volume) of absolute ethanol and 96% of oil DF. The physicochemical properties of the mixture and each of its components are presented. Diesel engine of the type D-245.12S has been experimentally studied using the mixture of DF and ethanol. The possibility of reducing the toxicity level of the exhaust emissions when using this mixture as an energy source for diesel engines of mobile power plants is shown. Transition of the studied diesel engine from oil DF to its mixture with ethanol made it possible to reduce the smoke capacity of the exhaust gases by 15–25% and to decrease the specific mass emissions of nitrogen oxides by 17.4%. In this case, we observed a slight increase in the exhaust gas emissions of carbon monoxide and light unburned hydrocarbons, which, however, can easily be eliminated by providing the exhaust system of a diesel engine with a catalytic converter. It is noted that the studied mixture composition should be optimized. The conclusion is made that absolute ethanol is a promising ecofriendly additive to oil diesel fuel and should be used in domestic diesel engines.     

Enlarged thermal deaerators with a horizontal column for large units at nuclear power stations

We describe the new enlarged deaerators for 1000-MW power units and for a BN-800 power unit equipped with an enlarged-volume tank with one horizontal deaeration column.     

Simulation and optimization of transients in thermal deaerators

A cellular matrix approach is proposed for calculating transients that occur during thermal deaeration with possible variations in the level of system decomposition due to the available support by empirical data. Matters relating to optimal control of the process are discussed.