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1、摘 要热电联产集中供热具有明显地节约能源、改善环境、提高供热质量、增加电力供应等综合效益。热电厂的建设是治理大气污染和提高能源综合利用率的重要手段之一。本文结合大唐黑龙江省鸡西热电厂生产运行的实际问题分析,对热电厂热经济运行进行了以下的分析和研究。(1)阐述热电联产原则性热力系统拟定,主设备性能的优选。(2)对不供热机组联合运行热负荷的分配,热力计算及经济指标的计算。(3)根据计算比较热量法与(火用)方法在热力系统分析计算上的差别。(4)针对日益增长的热负荷需求,结合热电厂生产运行的实际问题进行具体分析计算,得出如何做好经济指标分析的结论。关键词:热电联产;热经济性指标;热负荷;热分摊比;经济
2、运行;原则性热力系统AbstractHeat and electricity cogeneration and concentrated heat supply can realize.The project of has the synthetic of saving energy,environmental protection,improving the quality of heating and increasing electricity servicing.Its one of the important measure for the city to deal with the
3、 air pollution and enhancing the energys synthetic utilization ratio.And its also the basal establishment of commonweal to improve citizens living level,which just accords to our county s sustainable development strategy.This paper provides the analysis and study of economic operation of heat power
4、plan,which combines with problems indwelled in practical production.The followings are the main contents:1.The paper conducts the distribution of heat load, thermodynamical calculation and economic index calculation for the union operation of various heating units.2.This article analyses and studies
5、 the factors that affect the economic index of the heat power plan, and gives out the approaches and measures which achieve better benefit in practice.3.Thermal power plant to run economic analysis and decision-making;Thermal power plant and set of assessment of economic and technical indicators.4.H
6、eat load for the growing needs of Dalian Thermal Power Plant to run a specific analysis of the actual question, how do draw conclusions of the analysis of economic indicators.Key words:Heat and electricity cogeneration,thermo-economic index,heat load,heat distribution ratio,economic operation,the he
7、at system of principle目 录第一章 绪 论 .11.1 热电联产概述 .11.2 热电联产在我国体现的优越性: .11.3 本文设计的主要内容及任务: .2第二章 热电联产的主要设备及热力系统拟定 .32.1 锅炉的类型 .32.1.1 锅炉的容量和参数 .32.1.2 锅炉蒸汽参数对锅炉形式、受热面布置的影响 .42.1.3 锅炉的总体布置 .72.1.4 循环流化床锅炉技术及发展 .92.2 供热式汽轮机组的类型 .132.2.1 供热式汽轮机组的型式 .132.2.2 供热式汽轮机的特点 .142.2.3 供热式机组机型选择 .142.2.4 背压式汽轮机的类型及特点 .142.2.5 抽汽式汽轮机主要参数的选择 .152.2.6 凝汽采暖两用机组 .162.3 原则性热力系统的拟定及计算 .172.3.1 发电厂原则性热力系统的作用与组成 .172.3.2 编制发电厂原则性热力系统的主要步骤: .172.3.3 热电厂原则性热力系统计算 .192.3.4 原则性热力系统计算实例 .20第三章 热力发电厂热经济性评价 .273.1 评价热力发电厂热经济性的两种基本分析方法 .273.2 热电联产的概念 .273.3 热电联产的类型 .283.4 热电联产的主要形式: