供热燃气锅炉烟气余热深度利用技术的应用研究与分析

发布时间：2018-02-22 23:17

本文关键词： 烟气余热深度利用应用研究与分析　出处：《北京建筑大学》2015年硕士论文　论文类型：学位论文

【摘要】：当今世界气候变化,环境恶化,资源紧缺,如何节约和充分利用能源成为首先加以考虑的问题。作为耗能企业,能源成本已经占到企业总成本相当大的比重,如何降低能耗费用,开源节流,已成为各个企业积极探索的问题之一。随着清洁能源天然气的大量使用,天然气热电联产和燃气锅炉供热成为了城市的一种重要的供热方式。天然气在锅炉里燃烧释放出的热量不会全部被应用,不可避免地要产生一部分损失。其中排烟损失是各项热损失中最大的一项。如果对烟气排放中的热量加以回收利用可以提高锅炉的热效率,对节能减排具有重要意义。本文通过对供热燃气锅炉烟气余热利用技术途径和机理的研究,以实际工程为背景分析几种技术应用的适用条件、运行调节以及工程应用的实际效果。另外,燃气锅炉氮氧化物的排放问题目前已经引起人们的高度重视,如何控制氮氧化物的排放已迫在眉睫,通过对烟气余热深度利用与脱硝一体技术的应用研究分析,得到该技术与常规方案在节能性及环保效益方面的优势。最终得到如何对供热燃气锅炉进行烟气余热利用技术改造应用的结论。
[Abstract]:Nowadays, climate change, environmental deterioration and resource shortage in the world, how to save and make full use of energy has become the first question to be considered. As an energy-consuming enterprise, energy cost has already accounted for a large proportion of the total cost of the enterprise. How to reduce the cost of energy consumption, increase revenue and cut expenditure has become one of the problems actively explored by various enterprises. With the extensive use of clean energy natural gas, Natural gas cogeneration and gas-fired boiler heating have become an important heating mode in the city. The heat released from the burning of natural gas in the boiler will not be fully applied. The loss of exhaust smoke is the largest of all heat losses. If the heat from flue gas emissions is recycled, the thermal efficiency of the boiler can be improved. It is of great significance for energy saving and emission reduction. Through the research on the technical approach and mechanism of flue gas waste heat utilization in heating gas boiler, the application conditions of several technologies are analyzed in the background of actual engineering. In addition, the problem of nitrogen oxide emission from gas fired boiler has been paid great attention to, and how to control the nitrogen oxide emission is urgent. Through the research and analysis on the application of the technology of deep utilization and denitrification of flue gas waste heat, The advantages of the technology and the conventional scheme in energy saving and environmental protection benefit are obtained. Finally, the conclusion is drawn on how to transform and apply the technology of flue gas waste heat utilization to the heating gas boiler.
【学位授予单位】：北京建筑大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU995;TK115

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