鍋爐余熱利用系統(tǒng)不同集成方式的熱經(jīng)濟(jì)學(xué)分析
[Abstract]:With the increasingly serious energy and environmental problems, coal-fired units are facing enormous pressure of energy saving and emission reduction. The recovery and utilization of flue gas waste heat from the boiler tail of coal-fired power plant can not only improve the economy of the power plant, save the coal consumption, but also reduce the pollution to the environment. It is an effective method to realize energy saving and consumption reduction and optimization for flue gas waste heat utilization system. In this paper, the method of thermoeconomics structure theory is applied, based on a certain 350MW unit, the STAR-90 simulation system is used. The thermoeconomic cost and cost of waste heat utilization system of coal-fired power plant boiler exhaust gas (Case _ 2), secondary flue gas waste heat and water recovery system (Case3) and secondary MGGH waste heat utilization system (Case _ 4) are analyzed. Calculation of environmental costs, Compared with the original unit (Case 1), the exergy analysis and thermoeconomic analysis of four different integrated methods were carried out, and the environmental damage cost was calculated, and the influence of 2SOXNO2CO and soot on the environment was considered. At the same time, the exergy cost of the waste heat utilization system under variable load condition is compared and analyzed, and the advantages and disadvantages of various integration methods are considered synthetically. The results show that the unit exergy cost and thermoeconomic cost of Case _ 2 / Case _ 3 are lower than those of Case _ 1 unit, which indicates that it has the best energy-saving effect and Case _ 4 can utilize the waste heat of flue gas in order to make better use of the waste heat of flue gas. Controlling the heat transfer area of each component of the waste heat utilization system leads to the increase of irreversible loss and the higher cost of thermoeconomics. The relative cost difference and exergy loss are used to evaluate the advantages and disadvantages of the four integration methods. At the same time, the environmental cost of Case 4 is lower than that of the other three integration modes, which indicates that Case 4 has the best environmental protection effect. The dynamic analysis of the system under variable load conditions can guide the operation and optimization of the system.
【學(xué)位授予單位】:華北電力大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TK115;TM621.2
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 胡清;孫少鵬;蔣文;朱文中;;基于氟塑料換熱器的新型煙氣余熱深度回收技術(shù)研究[J];熱能動(dòng)力工程;2016年08期
2 史文崢;楊萌萌;張緒輝;李水清;姚強(qiáng);;燃煤電廠超低排放技術(shù)路線與協(xié)同脫除[J];中國(guó)電機(jī)工程學(xué)報(bào);2016年16期
3 邱季飛;鄭文廣;朱良松;;基于煙-風(fēng)-水一體化的煙氣余熱深度利用研究[J];發(fā)電與空調(diào);2016年04期
4 曾火輝;;MGGH系統(tǒng)的運(yùn)行調(diào)節(jié)分析[J];山東工業(yè)技術(shù);2016年16期
5 李永毅;韓宇;陳袁;徐鋼;楊勇平;;基于空氣預(yù)熱器分級(jí)設(shè)計(jì)的電站鍋爐余熱利用系統(tǒng)[J];熱力發(fā)電;2016年04期
6 何青;劉輝;劉文毅;;風(fēng)電-壓縮空氣儲(chǔ)能系統(tǒng)火用和火用成本分析模型[J];熱力發(fā)電;2016年02期
7 程林;周曉明;王妍飛;朱安鈺;;1000MW超超臨界二次再熱機(jī)組熱經(jīng)濟(jì)學(xué)分析[J];節(jié)能;2015年10期
8 宋景慧;劉桂才;廖艷芬;馬曉茜;;燃煤機(jī)組鍋爐低溫?zé)煔庥酂崂霉?jié)能效益分析[J];熱力發(fā)電;2015年09期
9 許加慶;閻維平;何東;;低壓省煤器升溫緩蝕技術(shù)的經(jīng)濟(jì)性分析[J];熱力發(fā)電;2015年05期
10 程偉良;季輝;;1000MW燃煤機(jī)組的熱經(jīng)濟(jì)學(xué)優(yōu)化[J];工程熱物理學(xué)報(bào);2015年02期
相關(guān)博士學(xué)位論文 前4條
1 陸萬鵬;基于電站鍋爐排煙余熱的機(jī)爐煙氣回?zé)嵫h(huán)理論與應(yīng)用研究[D];山東大學(xué);2012年
2 項(xiàng)敬巖;基于及熱經(jīng)濟(jì)學(xué)的供熱空調(diào)系統(tǒng)分析與評(píng)價(jià)研究[D];天津大學(xué);2012年
3 熊杰;氧燃燒系統(tǒng)的能源-經(jīng)濟(jì)-環(huán)境綜合分析評(píng)價(jià)[D];華中科技大學(xué);2011年
4 張超;復(fù)雜能量系統(tǒng)的熱經(jīng)濟(jì)學(xué)分析與優(yōu)化[D];華中科技大學(xué);2006年
相關(guān)碩士學(xué)位論文 前6條
1 張?chǎng)?鍋爐煙氣余熱利用系統(tǒng)分析與優(yōu)化研究[D];華北電力大學(xué);2015年
2 田瑤;電站鍋爐低溫?zé)煔庥酂崂孟到y(tǒng)的研究[D];華北電力大學(xué);2012年
3 張晶;火力發(fā)電企業(yè)環(huán)境成本內(nèi)部化研究[D];華北電力大學(xué);2012年
4 李云;基于內(nèi)部化的企業(yè)環(huán)境成本控制研究[D];江西理工大學(xué);2011年
5 唐婧;計(jì)及資源稀缺性的燃煤機(jī)組環(huán)境成本模型[D];華北電力大學(xué)(北京);2011年
6 尚慧;300MW機(jī)組濕式石灰石/石膏煙氣脫硫?qū)崟r(shí)仿真系統(tǒng)研究[D];華北電力大學(xué)(河北);2010年
,本文編號(hào):2233480
本文鏈接:http://sikaile.net/kejilunwen/dianlidianqilunwen/2233480.html