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蒸汽锅炉技术规程(TRD)对蒸汽锅炉材料、制造、计算、装配、安装、检验以及运行提出了当前水平的安全技术要求。本规程由德国蒸汽锅炉委员会(DDA)提出并按最新技术发展情况加以修订。本规程受德国蒸汽锅炉委员会委托,由技术监督联合会(埃森)出版。 相似文献
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文章通过DZL型卧式快装蒸汽锅炉锅筒底部鼓包, 探讨发生的原因及其修理方法, 对防止蒸汽锅炉事故有着一定的现实意义. 相似文献
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通过蒸汽锅炉质量平衡方程和能量平衡方程,求解蒸汽锅炉总供汽量。讨论连续排污率不同时、凝结水回收率不同时、凝结水温度不同时及蒸汽锅炉系统组成不同时,管道热损失及锅炉房自用热系数的变化规律。研究表明:在设计蒸汽锅炉系统时,若系统只设置排污扩容器、除氧器和排污冷却器,无凝结水回收,锅炉的装机容量应在所需用汽量的基础上,乘以1.21~1.24的管道热损失及锅炉房自用热系数。否则,会导致装机容量偏小,不能满足日常需要。若蒸汽锅炉系统回收凝结水,则管道热损失及锅炉房自用热系数可适当偏小,在1.1~1.15即可。 相似文献
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小型蒸汽锅炉应用热管空气预热器取代铸铁省煤器的探讨张家口市节能技术服务中心魏文利1前言目前正在运行的10t/h以下的小型蒸汽锅炉尾部受热面上,只布置铸铁省煤器(非沸腾式),经过对60余台小型蒸汽锅炉的测试观察,发现70%以上省煤器的利用率都较低,达不... 相似文献
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Waste heat recovery (WHR) is crucial to the efficiency improvement of natural gas‐fired boiler systems. Two‐stage WHR systems based on the natural gas‐fired boiler were analyzed from the viewpoints of thermal efficiency and heat transfer irreversibility. An overall entransy dissipation‐based thermal resistance was derived to evaluate the irreversibility of WHR, including the entransy dissipations during condensation and in absorption heat pump (AHP). Compared with the basic WHR system, the two‐stage WHR systems have higher boiler efficiency and less irreversibility. The air‐humidified system recycles both the heat and vapor in flue gas, while the unutilized latent heat in the recovered vapor causes the boiler to be less efficient than the AHP system. Investigation on heat exchanger effectiveness of two‐stage WHR systems illustrated: in the two‐stage WHR system with air humidification, the increasing effectiveness of both heat exchangers could effectively increase boiler efficiency and reduce heat transfer irreversibility. In the two‐stage WHR system with AHP, boiler efficiency has a local optimum when the dew point occurs near the outlet of the first heat exchanger; increasing the second heat exchanger effectiveness is more efficient in improving boiler efficiency. The present work may provide available references and guidance for the design and optimization of the two‐stage WHR systems. 相似文献
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本文对稠油油田注汽锅炉余热利用潜能进行了分析,探讨了回收烟气余热的必要性。对注汽锅炉烟气余热回收方式进行了研究,提出了注汽锅炉烟气余热回收的方案。经现场实施和测试,分析证实了注汽锅炉烟气余热回收的效果。 相似文献