电站锅炉热力算通用性的研究.doc

摘 要 燃煤电站锅炉的热力计算是电站锅炉设计和热力试验所必需的环节，准确地进行锅炉热力计算对于锅炉改造、燃烧调整及优化运行是十分重要的。锅炉热力计算过程繁琐复杂，涉及到大量的变量、图表、公式和大规模的迭代，需要使用方便、界面友好、易于扩展和维护，以及通用性强的锅炉热力计算软件。本文在燃煤电站锅炉热力计算的必威体育精装版研究成果的基础上，对锅炉热力计算原理和方法进行全面分析，建立锅炉整体热力计算模型，完成具有一定通用性的热力计算软件，实现锅炉热力计算的自动化。 本次开发的热力计算通用软件的主要任务就是对锅炉的各种相关部件归类、建立其数学模型，并开发其组件，最终实现按照具体锅炉中各部件布置方式进行组件搭接，达到锅炉热力计算方法和受热面布置方式等的通用性。 本次设计的研究对象为410t/h烟煤锅炉，在完成一定通用性的热力计算程序基础上，对燃烧不同比例褐煤的混煤锅炉进行热力计算，为烟煤锅炉掺烧褐煤的可行性进行初步论证。通过410t/h煤粉锅炉运行优化的实例，分析混煤配煤比例及炉膛内部传热计算方法对锅炉运行的影响。验证电站锅炉热力计算的通用性。 关键词：电站煤粉锅炉；热力计算；通用性；软件开发 Abstract The thermodynamic calculation of coal-fired power plant boiler is necessary for power plant boiler design and the thermal test, accurately boiler thermal calculation for boiler is very important for optimal operation of the boiler and combustion adjustment .Boiler thermodynamic calculation is cumbersome and complex that involves a lot of variables, charts, formulas and massive iterations, so a easy to use, friendly interface, easy to extend and maintain, and versatile boiler thermal calculation software is needed. On the basis of coal-fired power plant boiler thermal calculation of the latest research results and conducting a comprehensive analysis about boiler thermal calculation principles and methods，establishing the overall boiler thermal calculation model and a thermodynamic calculation software, realize the automation of boiler thermal calculation. The tasks of developing universal boiler thermodynamic calculation software are to classify all kinds of relative elements of boiler, to establish their mathematic models and develop their componenst, to realize the juncture of the each elements of boiler and the universality of the boiler thermodynamic calculation methods and all kinds of layout modes of heating surface. The research object of this design is the bituminous coal-fired boiler which load is 410t/h. Based on thermodynamic calculation program make a hermodynamic calculation about the coal mixed in different proportions of lignite boiler and a feasibilit