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分析了供热锅炉节能环保的各项影响因素,如锅炉热效率、锅炉炉渣含碳量、锅炉排烟温度、锅炉外表面温度,并针对上述因素提出了几点节能环保措施,包括设置分层给煤装置、严密监控供热锅炉运行状态、优化锅炉鼓风机、引风机调节方式等,为从事供热锅炉管理的人员提供一定参考与借鉴。 相似文献
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锅炉排污是锅炉运行中的重要操作,许多锅炉运行中发生爆管是排污不当造成的,锅炉排污问题应引起锅炉运行、操作、管理人员的重视,避免引起锅炉事故. 相似文献
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提出了电站锅炉部件及系统的可靠性计算模型,包括承压部件强度的可靠性计算模型、非承压部件的可靠性计算模型和锅炉系统的可靠性计算模型.锅炉承压部件的可靠性计算,考虑了设计量离散性的影响,使用概率设计法计算承压部件强度设计的可靠性.锅炉非承压部件的可靠性计算,使用了历史寿命数据统计法和非参数法的计算模型.锅炉系统的可靠性计算采用了串联系统的可靠性计算模型.给出了电站锅炉承压部件、锅炉易损件、锅炉耐用件、锅炉子系统、锅炉主机和锅炉系统的可靠性计算公式与计算实例.实现了在设计阶段定量计算锅炉部件和系统的可靠性.为电站锅炉的可靠性分析、可靠性设计与可靠性改进提供了依据. 相似文献
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水煤浆锅炉的能效分析 总被引:1,自引:0,他引:1
通过定量和定性计算分析水煤浆水分、磨煤电耗、锅炉运行热效率以及锅炉运行电耗对锅炉能效的影响,并与链条炉排锅炉和煤粉锅炉比较,指出水煤浆替代重油燃烧虽可取得明显的经济效益,但在能效方面却不及燃烧制浆原料煤的链条炉排锅炉或煤粉锅炉。 相似文献
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CFB锅炉招标过程中,业主在提出技术要求时,应着重考虑锅炉的容量、燃烧的煤种、锅炉运行的外部环境、运行条件、锅炉的性能要求等问题,以便锅炉的选择更趋合理。 相似文献
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<正>1冷凝锅炉的开发1.1开发动向从家用锅炉到工业、取暖用锅炉,为了提高锅炉的效率进行着多种的研究。提高锅炉效率的方法:第一,要减少锅炉表面的散热;第二,将燃料充分燃烧;第三,降低锅炉的排烟温度。锅炉热损耗大部分是锅炉排烟释放到空中所造成,为减少损 相似文献
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240 t/h锅炉运行期间由于锅炉刚性梁的频繁晃动、刚性梁锁扣松动,导致锅炉水冷壁管被撕裂、水冷壁管发生泄漏事故,通过对锅炉刚性梁锁扣的改造,有效地避免了锅炉刚性梁的晃动,确保了锅炉的稳定运行. 相似文献
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本文着重在运行方面、燃烧、配风调节及锅炉安装方面和锅炉使用方式方面和以往已经运行的锅炉状态参数对锅炉的影响进行对比,对两台锅炉同时进行燃烧及出力分析,通过采取必要的措施,使锅炉运行处于最佳运行状态. 相似文献
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为了研究双通道余热锅炉内烟气流场的分布情况,基于Fluent平台,采用可实现的k-ε双方程模型和多孔介质模型,对某钢铁厂双通道烧结余热锅炉内流场(压力场、温度场、速度场)进行数值模拟。结果表明,余热锅炉烟气阻力和炉膛出口排烟温度的数值模拟结果与锅炉实际运行结果比较符合,说明数值模拟准确度较高,理论模型可行;锅炉高温与低温烟气通道结合区域存在烟气走廊,结构不够合理;另外,锅炉进出口由于缺乏合适的导流装置,流场不均匀程度较大。研究结果可为双通道余热锅炉结构改进提供理论指导。 相似文献
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Consteel电炉余热锅炉的热平衡计算方法研究 总被引:2,自引:0,他引:2
针对Consteel电炉余热锅炉烟气入口参数不稳定的特点,得到了余热锅炉的各项热损失、锅炉效率、有效利用热量和蒸发量的计算公式。对65t Consteel电炉炼钢设备余热锅炉进行了热平衡计算,计算表明,锅炉的排烟热损失随烟气入口温度的降低而增加,而锅炉效率、有效利用热量和蒸发量随烟气入口温度的降低而降低,锅炉的平均蒸发量为23.1t/h。 相似文献
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Evaluation of retrofitting a conventional natural gas fired boiler into a condensing boiler 总被引:3,自引:0,他引:3
The exit flue gas temperature of a conventional gas fired boiler is usually high and a great amount of heat energy is lost to the environment. If both sensible heat and latent heat can be recovered by adding a condensing heat exchanger, the efficiency of the boiler can be increased by as much as 10%. In this paper, based on combustion and heat transfer calculations, the recoverable heat and the efficiency improvement potential of different heat recovery schemes at various exit flue gas temperatures are presented by performing design calculations. The payback period method has been used to analyze the feasibility of retrofitting a conventional gas fired boiler into a condensing boiler in a heating system in detail. The results show that the most economical exit flue gas temperature is 40–55 °C when a conventional natural gas fired boiler is retrofitted into a condensing boiler simply by adding a condensing heat exchanger. It is feasible to use the return water of a heating system as the cooling medium of the condensing heat exchanger because the return temperature varies with the ambient temperature and is lower than the dew point of the water vapor in the flue gas in most periods of a heating season in some regions, which has been verified by retrofitted case. 相似文献
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The objective of this study is to perform a techno-economic analysis on a typical wood pellet and wood residue boiler for generation of heat to an average-sized greenhouse in British Columbia. The variables analyzed included greenhouse size and structure, boiler efficiency, fuel types, and source of carbon dioxide (CO2) for crop fertilization. The net present value (NPV) show that installing a wood pellet or a wood residue boiler to provide 40% of the annual heat demand is more economical than using a natural gas boiler to provide all the heat at a discount rate of 10%. For an assumed lifespan of 25 years, a wood pellet boiler system could generate NPV of C$259,311 without electrostatic precipitator (ESP) and C$74,695 with ESP, respectively. While, installing a wood residue boiler with or without an ESP could provide NPV of C$919,922 or C$1,104,538, respectively. Using a wood biomass boiler could also eliminate over 3000 tonne CO2 equivalents of greenhouse gases annually. Wood biomass combustion generates more particulate matters than natural gas combustion. However, an advanced emission control system could significantly reduce particulate matters emission from wood biomass combustion which would bring the particulate emission to a relatively similar level as for natural gas. 相似文献
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针对太阳能-壁挂炉供暖系统存在的不足,提出了基于热泵技术的太阳能热泵-壁挂炉供暖系统。利用STM32(意法半导体32位微控制器)丰富的外设功能和数据处理能力,依据控制对象的特点,结合相关算法,实现了太阳能热泵供暖与壁挂炉供暖的联合控制。STM32对温度、光照强度等数据进行处理,以此为依据来实现对电子膨胀阀流量和压缩机容量控制,保证对系统的实时控制。 相似文献