太阳能、空气源热泵系统、锅炉供暖联合供热方式的探讨

本文针对唐山市某示范工程中应用的太阳能-空气源热泵-锅炉供热联合使用技术进行阐述,分析了三者联合运行的技术可行性,强调了可再生能源综合利用的必要性。     

Model prediction of the operating behavior of a circulating fluidized bed boiler

An improved mathematical model for a circulating fluidized bed (CFB) boiler based on the model developed earlier by the authors was applied to simulate the operation of a 12 MW CFB boiler. The influences of the excess air ratio, primary air ratio, coal particle size distribution, coal properties (ash content and volatile content) and Ca/S ratio on the boiler operation were analyzed. The results showed that the model simulation may be applied to the optimum design and economic operation of the CFB boiler.     

发电厂锅炉结焦的原因分析及防治对策

从锅炉的结构、运行、设计及操作等多方面分析锅炉结焦的原因,并给出相应的防治对策。     

智能型电热锅炉控制器的设计

针对传统的电热锅炉补水需要人工干预,效率和可靠性低的问题,设计了一种以AT89C51单片机为核心的智能型电热锅炉控制器．该控制器能自动控制锅炉的水位、温度和压力,自动完成水位和温度状态的显示及报警,提高了整个系统的效率和可靠性．     

Experimental and thermal stress investigation on side wall deformation at the pendent convective pass in a utility boiler

An experimental investigation is performed on side wall deformation at the pendant convective pass （PCP） in a 300 MW and a 600 MW utility boiler. The temperature distributions are measured on the side wall areas of the water-cooled wall, the PCP and the horizontal convective pass （HCP） in the two utility boilers. These experiments show that there are great temperature differences in the side wall areas during the startup process in both utility boilers. These temperature differences can reach 80-150 ~C with the side wall temperature in the PCP area higher than those in the water-cooled wall and the HCP. The highest temperature in the PCP is close to the flue gas side temperature at the same position in the horizontal flue gas pass. Thermal stress analyses are conducted in the side wall areas in the water-cooled wall, the PCP and the HCP with the software ANSYS. The results show that, at great temperature differences, the PCP side wall undergoes negative thermal stresses that exceed the yield strength causing deformation in the PCP side wall.     

600MW机组首台折流杆闭冷器的选型及应用

关于外导流折流杆闭冷器首次在600 MW超临界燃煤发电机组行运情况的分析总结,该技术闭冷器具有换热效高、流动阻力小、结构紧凑、防振性强、不易结垢等优点,具重要应用价值。     

锅炉原理课程网站的开发与应用

介绍了锅炉原理课程网站开发的主要原则及功能模块,本课程网站具有交互性和可维护性,能较好展示教学团队拥有的特色教学资源和教学成果,实现课堂教学和课程网站的优势互补,既能培养学生自主学习能力,提高教学效果,也能满足希望通过网络获取相关知识的业余学习者的需求。     

锅炉生物质燃料节能技术改造可行性分析

燃煤工业锅炉能效低、污染大。生物质能源作为可再生能源,具有来源广、污染物排放低的特点。结合油脂行业锅炉技改项目环境影响评价实例,论述其作为化石燃料的替代能源,不仅企业有良好的经济效益,且环境效益显著。     

循环流化床燃煤锅炉掺烧燃气试验研究

为探索循环流化床燃煤锅炉掺烧可燃气体的可行性及运行效果,对某煤化工企业工艺流程进行优化,将原工艺流程至放散（火炬）系统的富余可燃气通过燃料气系统引入燃煤锅炉掺烧。研究了掺烧燃气量对煤耗、飞灰含碳量及锅炉产汽量的影响。结果表明,150t/h燃煤锅炉掺烧燃气4000Nm3/h时,运行效果改善明显,煤耗平均降低10%,飞灰含碳量平均降低8%～12%,产汽量提高20%。     

锅炉房节能改造

北京财贸学校对燃气锅炉房供暖系统进行了节能改造。改造后节能效果明显,值得全面推广。