锅炉热力设计.docVIP

PAGE II PAGE I 摘要 锅炉热力设计是确定各部位受热面的尺寸大小，形状、相对位置等条件，设计出经济可行的锅炉，使锅炉本体各部位受热面处的烟气和工质保持一定的参数，以保证锅炉能够安全地正常运行。 本设计通过对400t/h煤粉再热锅炉进行热力设计计算，以提高锅炉运行的安全性和经济性。设计在确定锅炉基本参数的前提下，分析煤的元素及煤种判别，确定锅炉的整体布置和结构尺寸，以及计算燃烧产物及锅炉内热平衡，并对锅炉的炉膛，后屏过热器、对流过热器、高温再热器、烟气转向室、低温再热器、省煤器和空气预热器进行了热力设计计算。论文完成了400t/h额定负荷、设计煤种下的热力设计计算。 关键词：400t/h再热煤粉锅炉;设计;热力计算 Abstract Boiler design is to determine the heating surface of each part of the size, shape and relative position of other conditions, the economic feasibility of the boiler designed to make each part of the boiler heating surface Department of smoke and work to maintain a certain quality parameters to ensure that the boiler can been safely running. The main purpose of the paper: Combined with the theoretical knowledge of the factors that affect the boiler efficiency, on the 400t / h coal reheat boiler thermal design calculations, in order to enhance the safety of boiler operation and economy. The main thesis is: In determining the basic parameters of the boiler under the premise of the elements of coal and coal discriminant to determine the overall layout and structure of the boiler size, and calculate the heat balance of the products of combustion and boiler, and boiler furnace, after the screen superheater, convection superheater, reheater heat, smoke turned to room temperature reheater, economizer and air preheated for a thermal design calculations. Thesis completed 400t / h rated load, under the design coal thermal design calculations. Keywords: 400t / h pulverized coal boiler; design; reheat thermal calculation 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc 前言 PAGEREF _Toc \h 1 HYPERLINK \l _Toc 1 概论 PAGEREF _Toc \h 2 HYPERLINK \l _Toc 1.1 电力生产过程及特点 PAGEREF _Toc \h 2 HYPERLINK \l _Toc 1.2 锅炉基本概念 PAGEREF _Toc \h 3 HYPERLINK \l _Toc 1.3 电站锅炉的技术经济指标 PAGEREF _Toc \h 3 HYPERLINK \l _Toc 2 设计任务 PAGEREF _Toc \h 6 HYPERLINK \l _Toc 2.1 原始资料 PAGEREF _Toc \h 6 HYPERLINK \l _Toc 3 燃料元素分析 PAGEREF _Toc \h 7 HYPERLINK \l _Toc 3.1 燃料数据