本文選題：燃?xì)?蒸汽聯(lián)合循環(huán)　切入點(diǎn)：余熱鍋爐　出處：《華南理工大學(xué)》2016年碩士論文

【摘要】：隨著節(jié)能與環(huán)保的要求日益嚴(yán)格,以及天然氣的大量引入,燃?xì)?蒸汽聯(lián)合循環(huán)機(jī)組因其發(fā)電效率高、污染物排放少等優(yōu)勢(shì)而發(fā)展迅速。國家 十二五‖規(guī)劃中更是把建立燃?xì)?水蒸汽聯(lián)合循環(huán)機(jī)組發(fā)電廠作為全國一個(gè)重要的發(fā)展項(xiàng)目,全國各重要城市會(huì)逐步以聯(lián)合循環(huán)機(jī)組取代燃煤等污染較大的發(fā)電機(jī)組;并且燃?xì)廨啓C(jī)及其聯(lián)合循環(huán)機(jī)組建設(shè)周期短、負(fù)荷調(diào)整靈活等特點(diǎn),對(duì)目前的冷熱電聯(lián)供及分布式能源系統(tǒng)有更大的發(fā)展空間。因此,針對(duì)燃?xì)?蒸汽聯(lián)合循環(huán)機(jī)組的節(jié)能優(yōu)化進(jìn)行研究,具有著重要的社會(huì)和經(jīng)濟(jì)意義。在實(shí)際運(yùn)行中,聯(lián)合循環(huán)機(jī)組受環(huán)境溫度、燃?xì)廨啓C(jī)實(shí)際運(yùn)行性能、燃?xì)廨啓C(jī)燃燒調(diào)整等因素的影響,使燃?xì)廨啓C(jī)的排煙參數(shù)存在較大的變化,并且余熱鍋爐、汽輪機(jī)等部件也會(huì)隨著運(yùn)行小時(shí)數(shù)出現(xiàn)劣化,性能下降。因此,聯(lián)合循環(huán)電站的余熱鍋爐實(shí)際運(yùn)行情況與設(shè)計(jì)性能存在一定差異,從而影響余熱鍋爐的水蒸汽參數(shù),使其與汽輪機(jī)的水蒸汽參數(shù)不匹配,降低汽輪機(jī)的效率及輸出功率。本文在收集大量現(xiàn)場(chǎng)運(yùn)行數(shù)據(jù),并掌握余熱鍋爐工質(zhì)特性的基礎(chǔ)上,結(jié)合文獻(xiàn)得出更精確的關(guān)系擬合式。結(jié)合實(shí)際運(yùn)行數(shù)據(jù)及設(shè)計(jì)數(shù)據(jù)分析了余熱鍋爐及汽輪機(jī)的主要部件特性,建立了電站余熱鍋爐的仿真計(jì)算模型。運(yùn)用電廠的實(shí)際余熱鍋爐煙氣入口參數(shù),以蒸汽輪機(jī)輸出功率為函數(shù),通過遺傳算法尋找電站余熱鍋爐在某些負(fù)荷點(diǎn)下的最佳運(yùn)行參數(shù),擬合各個(gè)最優(yōu)點(diǎn)壓力,得出機(jī)組實(shí)際運(yùn)行條件下余熱鍋爐的最佳滑壓曲線。同時(shí)研究當(dāng)燃?xì)廨啓C(jī)排煙參數(shù)、汽輪機(jī)內(nèi)效率、汽輪機(jī)通流能力發(fā)生變化時(shí)最佳滑壓曲線的調(diào)整問題。給水系統(tǒng)是余熱鍋爐系統(tǒng)中最重要組成的部分之一,同時(shí)它也是最主要的輔機(jī)耗能部件。本文討論了聯(lián)合循環(huán)電廠給水系統(tǒng),針對(duì)某電廠的實(shí)際運(yùn)行泵進(jìn)行了變速改造的節(jié)能優(yōu)化分析。結(jié)果表明:平均負(fù)荷下給水泵能獲得30%左右節(jié)能量;大部分工況能夠滿足給水系統(tǒng)壓力要求,當(dāng)不滿足時(shí)可適當(dāng)提升給水泵頻率。余熱鍋爐滑壓曲線及給水系統(tǒng)的優(yōu)化結(jié)果表明,機(jī)組優(yōu)化后發(fā)電機(jī)組能輸出更多的功率,更能滿足機(jī)組高效運(yùn)行、國家節(jié)能減排的要求,同時(shí)優(yōu)化結(jié)果為電廠實(shí)際優(yōu)化運(yùn)行指明了方向,具有現(xiàn)實(shí)的工程意義。
[Abstract]:With the increasingly stringent requirements of energy conservation and environmental protection, and the introduction of natural gas, gas-steam combined cycle units because of its high power generation efficiency, In the 12th Five-Year Plan of China, the establishment of gas-water steam combined cycle power plants is considered an important development project in the country. Major cities throughout the country will step by step replace coal-fired and other polluting generating units with combined cycle units; and gas turbines and their combined cycle units will have short construction cycles and flexible load adjustment. Therefore, it is of great social and economic significance to study the energy saving optimization of gas-steam combined cycle units, which is of great social and economic significance. The combined cycle unit is affected by the environmental temperature, the actual operation performance of the gas turbine, the combustion adjustment of the gas turbine and so on. The exhaust gas parameters of the gas turbine are greatly changed, and the waste heat boiler, The performance of steam turbine and other components will also deteriorate with the number of hours of operation. Therefore, the actual operation and design performance of waste heat boiler in combined cycle power station are different to some extent, thus affecting the steam parameters of waste heat boiler. It can not match the steam parameters of steam turbine, reduce the efficiency and output power of steam turbine. On the basis of collecting a large amount of field operation data and mastering the working fluid characteristics of waste heat boiler, In combination with the literature, a more accurate relationship fitting formula is obtained. Combined with the actual operation data and the design data, the characteristics of the main components of the waste heat boiler and steam turbine are analyzed. The simulation calculation model of waste heat boiler in power station is established. Using the actual flue gas inlet parameters of waste heat boiler in power plant and taking the output power of steam turbine as function, the optimal operating parameters of waste heat boiler in power station under some load points are found by genetic algorithm. The optimum slip pressure curve of the waste heat boiler under the actual operation condition of the unit is obtained by fitting each optimum pressure. At the same time, when the gas turbine exhaust gas parameter, the turbine internal efficiency is studied. The problem of adjusting the optimal slip pressure curve when the flow capacity of steam turbine changes. The feedwater system is one of the most important components of the waste heat boiler system. At the same time, it is also the most important auxiliary unit. This paper discusses the feed water system of combined cycle power plant. According to the energy saving optimization analysis of the actual operating pump in a power plant, the results show that the feed pump can obtain about 30% energy saving under the average load, and most of the working conditions can meet the pressure requirements of the feed water system. When it is not satisfied, the frequency of feed water pump can be raised properly. The results of the skid pressure curve of waste heat boiler and the optimization of feed water system show that the unit can output more power after optimization, and can meet the requirements of high efficiency operation of the unit and national energy saving and emission reduction. At the same time, the optimization result indicates the direction for the actual optimal operation of the power plant, and has practical engineering significance.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TK229.929

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉文濤;余熱鍋爐快速啟動(dòng)的探討[J];浙江電力;2002年02期

2 張錫強(qiáng),徐建炎;余熱鍋爐的發(fā)展趨勢(shì)和歐薩斯鍋爐的特點(diǎn)[J];有色設(shè)備;2003年06期

3 王麗紅;余熱鍋爐系統(tǒng)技術(shù)改造[J];化工設(shè)計(jì);2004年04期

4 楊松,李世魁;燃?xì)?蒸汽聯(lián)合循環(huán)余熱鍋爐概述[J];電站系統(tǒng)工程;2005年04期

5 劉作恒;水熱煤技術(shù)在余熱鍋爐上的應(yīng)用[J];應(yīng)用能源技術(shù);2005年04期

6 曹習(xí)功;白周方;劉偉;;余熱電站系統(tǒng)中的水泥窯余熱鍋爐簡介[J];工業(yè)鍋爐;2005年06期

7 段躍非,張海容;余熱鍋爐初步熱控設(shè)計(jì)研究[J];鍋爐制造;2005年02期

8 臧向東,劉聿拯,袁益超;能源島余熱鍋爐的實(shí)驗(yàn)研究[J];能源研究與利用;2005年02期

9 張維鵬;;煉油廠催化余熱鍋爐改造[J];設(shè)備管理與維修;2006年09期

10 陸怡;宋厚欽;;余熱鍋爐爐管泄漏與改造[J];石油化工設(shè)備;2006年06期

相關(guān)會(huì)議論文 前10條

1 曹家u!;;余熱鍋爐技術(shù)進(jìn)展[A];中國動(dòng)力工程學(xué)會(huì)成立四十周年文集[C];2002年

2 王繼方;錢會(huì)敏;;玻璃行業(yè)的余熱鍋爐如何選型[A];2008年全國玻璃窯爐技術(shù)研討交流會(huì)論文匯編[C];2008年

3 黃偉;;轉(zhuǎn)爐余熱鍋爐檢測(cè)和控制系統(tǒng)[A];第七屆(2009)中國鋼鐵年會(huì)論文集（下）[C];2009年

4 劉文冰;馬慶勇;桑海書;;QC150/950-60-5.29/485余熱鍋爐維修施工方案[A];首屆2010年全國（廣州）機(jī)械裝備先進(jìn)制造技術(shù)學(xué)術(shù)交流大會(huì)論文集（河南分冊(cè)）[C];2010年

5 周何;于慶波;;電爐余熱鍋爐應(yīng)用現(xiàn)狀及受熱面積灰分析[A];2010全國能源與熱工學(xué)術(shù)年會(huì)論文集[C];2010年

6 董茂林;侯祥松;孫明慶;;煉鋼轉(zhuǎn)爐余熱鍋爐壽命影響因素淺析與改進(jìn)探討[A];第5屆中國金屬學(xué)會(huì)青年學(xué)術(shù)年會(huì)論文集[C];2010年

7 宿德民;張鳳芝;;喉管式高壓余熱鍋爐的結(jié)構(gòu)設(shè)計(jì)與分析[A];第四屆全國壓力容器學(xué)術(shù)會(huì)議論文集[C];1997年

8 楊震;劉忠樓;郭琴琴;;調(diào)峰運(yùn)行大型余熱鍋爐設(shè)計(jì)要點(diǎn)[A];第八屆鍋爐專業(yè)委員會(huì)第二次學(xué)術(shù)交流會(huì)議論文集[C];2005年

9 孫惠山;;余熱鍋爐技術(shù)改造[A];山東省暖通空調(diào)制冷2007年學(xué)術(shù)年會(huì)論文集[C];2007年

10 董茂林;孫明慶;侯祥松;;長壽命轉(zhuǎn)爐余熱鍋爐[A];2012年全國煉鋼—連鑄生產(chǎn)技術(shù)會(huì)論文集（上）[C];2012年

相關(guān)重要報(bào)紙文章 前10條

1 楊莉;七○三所余熱鍋爐叩開歐美大門[N];中國船舶報(bào);2009年

2 記者 夏元　實(shí)習(xí)生 楊致陽 王聿;西南鋁余熱鍋爐節(jié)約400萬元[N];重慶日?qǐng)?bào);2009年

3 記者 陳e，

本文編號(hào)：1693143