共查询到19条相似文献,搜索用时 62 毫秒
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许兴伟 《中国锅炉压力容器安全》2008,(3):64-65
1 锅炉排污的控制
锅炉排污的控制是锅炉水处理的一个重要的组成部分,直接影响安全与经济运行。合理的排污对保持锅水品质;防止锅炉结垢、节约能源有着重要的作用,是锅炉水处理不可缺少的一个手段。 相似文献
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锅炉的排污控制不仅是锅炉运行调节的组成部分,也是锅炉水质控制的一个重要的环节,它直接影响到锅炉的安全运行和经济运行。合理的排污对保持炉水的品质、蒸汽的品质、防止锅炉污垢、提高锅炉寿命、节约能源都有着重要和积极的作用。 相似文献
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现在循环流化床锅炉自控系统普遍采用集散型控制系统(DCS)。本文以河南神马尼龙化工有限责任公司动力厂3#锅炉为例,介绍了CENTUM-CS3000集散型控制系统的配置及其功能,并从循环流化床锅炉的控制方式、控制水平、联锁、安全保护、一般的控制操作等方面介绍了DCS在循环流化床锅炉控制中的成功应用。 相似文献
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水泥余热发电系统作为水泥生产线的配套系统,是一个典型的随动系统,各水系统之间耦合性强,窑头锅炉(AQC锅炉)汽包水位、窑尾锅炉(PH锅炉)汽包水位、闪蒸器水位、AQC锅炉省煤器出口水温和冷凝器水位控制相互干扰,控制难度较大.但通过合理的控制策略设计和解耦控制设计,可以实现整个水系统的协调控制,提高机组运行的自动化水平,... 相似文献
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1.燃烧废木材锅炉的先进控制装置.J.Robinson,etal.Ad-vancedcontrolofwoodwasteboiler.TAPPITchnologySummit.2002.138~147(英文).内容提示:燃烧废木材锅炉先进控制装置可稳定锅炉操作、使锅炉达到最佳燃烧状态和减少CO和NOX排放量,产生的蒸汽可应用于造纸厂和汽轮机上。控制 相似文献
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工业燃煤锅炉自动控制及实施 总被引:1,自引:0,他引:1
保证锅炉正常、安全运行、提高锅炉运行的热效率是锅炉自控的目的。本文以10t/h工业燃煤链条炉为代表,全面分析了工业锅炉的对象特性,提出了工业燃煤链条炉各种相应的控制方案,明确了控制装置的选择与控制方实施的关系。通过各种控制装置的特点和性价比的比较,以及运行情况调查,推荐工业燃煤锅炉微机控制。 相似文献
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超临界锅炉中间点温度控制问题分析 总被引:12,自引:3,他引:9
结合国内新一代600 MW超临界锅炉的实际,综合分析了超临界锅炉中间点温度的控制与水冷壁传热特性以及汽温调节的关系,对超临界锅炉工质的热物理特性、水冷壁的类膜态沸腾、管壁过热以及汽温调节等相关问题进行了比较深入地理论分析。 相似文献
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阐述了凝结换热及冷凝式锅炉原理及其应用背景,分析了制约冷凝式锅炉快速发展的技术和政策瓶颈,介绍了先进的凝结换热和冷凝式锅炉应用技术,为我国未来冷凝式锅炉技术创新指出了参考方向。 相似文献
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根据电厂锅炉在燃用神华煤的过程中表现出的各种特性,就预防锅炉严重结渣、制粉系统爆破以及提高锅炉运行的安全性和经济性等问题进行了详细的分析,根据锅炉试烧神华煤的运行经验,得出了在运行上采取有效的措施,即富氧燃烧、合理吹灰和掺烧其他煤种等就能使炉内的结渣得到有效改善,为今后在非设计煤种锅炉上推广燃烧神华煤提供了宝贵的经验。 相似文献
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Guilherme Filippo Fi|ho 《能源与动力工程:英文版》2014,(6):1021-1029
This paper presents some opportunities to improve feedwater system efficiency for industrial boilers, usually consisting of multistage centrifugal pumps driven by three-phase induction motors. There is abundant literature on the efficiency in steam boilers. However, few deal exclusively with feedwater systems. The total horsepower in boiler feed pumps and the corresponding energy consumption estimated for Brazilian industries are as follows: 110.5 MWE of motor driven power and a yearly electricity consumption of 442 GWh for a population of 7,800 steam boilers, approximately. It is estimated that there can be an efficiency improvement in feedwater systems for industrial boilers of 30% on average. To a large extent, these opportunities reside in older boilers that are very common in the Brazilian industrial sector. The most common causes for the low efficiency of feedwater systems are: the control loop of the feedwater, oversized boilers and excessive operational pressure set. Sometimes, the boiler feedwater system can present more than one problem simultaneously. Any kind of solution involves some speed regulation, new pump and number of pumps. Each problem generation facilities were selected in which common inefficiencies cases, the improvement in efficiency can get to 37%. form of intervention in boiler feed pumps, such as: impeller trim, may have more than one solution. Three distinct industrial steam are present. The suggested solutions were analyzed. In these three 相似文献
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锅炉烟气酸露点温度计算及对预热器腐蚀的影响 总被引:1,自引:0,他引:1
锅炉烟气流经空气预热器时,当空气预热器金属壁温低于烟气酸露点温度时,即生成硫酸,从而导致空气预热器冷端腐蚀及堵灰。本文介绍了锅炉烟气酸露点温度的计算及对预热器冷端腐蚀的影响。 相似文献
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This paper introduces a mathematical model of a boiler room to research its thermal efficiency. The model is regarded as an open thermodynamic system exchanging mass, energy, and heat with the atmosphere. On those grounds, the energy and energy balance were calculated. Here I show several possibilities concerning how this model may be applied. Test results of the coefficient of thermal efficiency were compared to a real object, i.e. a steam boiler room of the Provincial Hospital in W?oc?awek (Poland). The tests were carried out for 18 months. The results obtained in the boiler room were used for verification of the mathematical model. 相似文献