共查询到16条相似文献,搜索用时 140 毫秒
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通过对超高温超高压等高蒸汽参数机组除氧器乏汽回收装置应用不成功的案例进行原因分析,并结合2×70MW发电机组除氧器实际,对制约除氧器应用的关键问题进行逐一分析,制定出了实施思路和方案,并自行设计、制作和调试,实现了乏汽回收装置的成功应用,解决了乏汽外排现象,取得了较好的经济效益和社会效益。 相似文献
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本针对我厂的特殊情况,对传统的喷雾淋水盘式除氧器和新型膜式除氧器的工作原理进行了优缺点对比,并详细介绍了我厂将喷雾淋水盘式除氧器改为膜式除氧器的改造方法及改造后的良好效果。 相似文献
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本钢发电厂高压车间的除氧器在运行过程中存在严重的振动现象。振动对除氧器的设备造成损伤,影响了除氧效果。过去认为:增加除氧器投入运行的数量,可以削弱振动的幅度。结果,不但没有削弱振动,反而恶化了除氧效果。对此揭示了振动的真正原因,提出了消除振动的措施、通过调整除氧器负荷提高除氧效果的方法。 相似文献
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结合乏汽回收技术原理,介绍了某氧化铝自备电厂除氧器乏汽回收装置的实施方案,通过吸收并利用乏汽,可实现年节约标煤2040 t,同时减少了大气污染,收到了良好的经济效益和社会效益。论证了该技术存在推广的现实意义。 相似文献
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介绍了承钢2台220 t锅炉,1台108 t锅炉的除氧器乏汽、定排扩容器乏汽、疏水扩容器乏汽的回收,连排扩容器疏水可利用余热的回收,提高了锅炉的热效率,也回收了乏汽中的除盐水,回收乏蒸汽的同时也美化了环境,取得了良好经济效益和社会效益。 相似文献
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通过探讨水源热泵在电厂循环冷却水余热回收中应用以及蒸汽喷射式热泵在回收除氧器排汽和采用吸附式热泵技术回收锅炉排污水热能中的应用,说明了热泵技术在电厂中应用具有显著的节能效果。 相似文献
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供热机组热力系统补水量大、补水温度低,传统的除氧器补水方式存在高品位热量浪费、除氧效果差、除氧器振动大等不足。文中提出供热机组热力系统采用凝汽器补水方式的技术改进方案,并采用热平衡法进行了补水方式后的经济性分析,证明凝汽器补水方式可起到提高供热机组热经济性、降低主蒸汽耗量的作用,还有利于降低机组排汽温度、提高除氧合格率,节能效果明显。 相似文献
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文章对包钢热电厂燃气-蒸汽联合循环机组(CCPP)除氧器(无锡华光锅炉厂制造)在生产过程中存在的溶氧含量高,从排空门喷水等问题进行原因分析,并提出相应的改进办法和优化操作。 相似文献
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山东九羊集团有限公司开发了高炉炉渣余热回收技术,将绝大部分冷却水蒸发为中压饱和蒸汽进行收集,然后采用风冷工艺获得热循环空气,通过余热锅炉再次回收余热,吨铁可回收热量257.7 MJ,综合回收率可达87%,与传统的水淬工艺相比吨渣可节约用水7~9 t。 相似文献
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At present, there is still some waste heat in the production of Guixi Smelter that has not been effectively used. Through the transformation of waste heat recovery technology, the waste heat of the air compressor and the waste heat of the converter water jacket are combined with the process and production without affecting the production. The effective recovery of the middle part of the waste heat not only reduces the waste of energy, but also saves a certain economic cost for the factory, and also provides strong support for environmental protection. 相似文献
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The feasibility of developing a waste heat recovery system from waste hot air generated by the reduction system in Kroll process to pre-heat water is studied in this paper, in order to reduce energy loss. In the proposed system, the hot air from reduction reactor was first collected by pipelines with insulating material, and then supplies to a shell-and-tube heat exchanger to heat up water. And the energy, exergy analysis of the whole waste heat recovery system have been carried out firstly on the basis of material, energy and exergy balance. Then, the thermo-economic analysis and economic analysis of the waste heat recovery system are also discussed. The results show that the waste heat recovery system presented in this paper could be applied not only for restricted category of reduction system in Kroll process, although the energy efficiency and exergy efficiency of the waste heat recovery system are as low as 26.84% and 11.09%, respectively. And more than two times equivalent energy could be obtained from the waste heat recovery system. The payback period of a waste heat recovery system is about 4.39 years. 相似文献