高效超超临界燃煤发电机组热力系统的（火用）与泛（火用）分析

发布时间：2018-02-05 05:28

本文关键词： 高效超超临界火电厂热力系统 (?)分析泛(?)分析　出处：《中南大学》2014年硕士论文　论文类型：学位论文

【摘要】：摘要：稳定、可靠的能源供应是经济发展的重要基础。然而,日益严峻的能源形势、不断恶化的环境问题时刻在警示着我们,有效的利用与节约能源、减少对生态环境的破坏与污染,才是实现我国经济可持续发展的根本途径。长期以来,受能源供应结构的影响,我国的火力发电都以燃煤机组为主。经过数十年的发展,1000MW超超临界发电技术已经成为当今世界范围内的主流发电技术,其技术的可靠性以及对发电机组热效率的提升得到广泛认可。然而,针对该技术的炯分析以及考虑经济、环境因素等因素的综合评价分析还比较少。本文选取国内最新研发的高效1000MW超超临界发电机组为主要研究对象,以(?)分析、泛(?)分析方法为基础,建立了机组的热力系统分析模型,对高效1000MW超超临界燃煤发电机组以及其它不同容量、类型典型机组的热力系统进行了综合评价分析。分析得到了高效1000MW超超临界燃煤发电机组热力系统的(?)效率与泛(?)利用系数,以及热力系统内部的损失分布占比情况,并分析了产生各种损失的原因,为机组热力系统的优化提供了依据。同时,通过与300MW亚临界机组、600MW超临界机组、常规参数1000MW超超临界机组分析结果的对比,得出高效1000MW超超临界机组的(?)效率、泛(?)利用系数与可持续发展指数均优于其他机组,说明该机组对能量、投资等资源都有较好的利用,对生态环境的影响也相对较小,全面体现了高效1000MW超超临界机组的优越性。
[Abstract]:Absrtact: stable and reliable energy supply is the important foundation of economic development. However, the increasingly severe energy situation and worsening environmental problems are warning us to effectively utilize and save energy. Reducing the damage and pollution to the ecological environment is the fundamental way to realize the sustainable development of our economy. For a long time, under the influence of energy supply structure, coal-fired units are the main power generation units in China. After decades of development. 1000MW ultra-supercritical power generation technology has become the mainstream power generation technology in the world today. The reliability of the technology and the thermal efficiency of generating units have been widely recognized. The analysis of the technology and the comprehensive evaluation of the factors such as economy and environment are few. In this paper, the newly developed high-efficiency 1000MW ultra-supercritical generator set is selected as the main research object. (analysis, panorama? Based on the analysis method, the thermal system analysis model of the unit is established, which can be used for high-efficiency 1000MW ultra-supercritical coal-fired generating units and other different capacities. The comprehensive evaluation and analysis of the thermal system of typical units are carried out. The thermal system of high efficiency 1000MW ultra-supercritical coal-fired generating set is analyzed. ) efficiency and panorama? The utilization coefficient and the internal loss distribution of the thermal system are analyzed, and the causes of the losses are analyzed, which provides the basis for the optimization of the thermal system of the unit. By comparing the analysis results of 1000MW ultra-supercritical units with 300MW subcritical units and 600MW supercritical units with conventional parameters, it is concluded that the high efficiency 1000MW ultra-supercritical units can be obtained. Efficiency. The utilization coefficient and sustainable development index are better than other units, indicating that the unit has better utilization of energy, investment and other resources, and the impact on ecological environment is relatively small. The superiority of high efficiency 1000 MW ultra supercritical unit is fully embodied.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM621

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