【摘要】：低溫省煤器與氣-氣換熱器(GGH)分別具備良好的節(jié)能與環(huán)保效果,但二者無(wú)法同時(shí)布置。對(duì)此,本文提出燃煤電站清潔高效協(xié)同系統(tǒng),該系統(tǒng)應(yīng)用煤干燥技術(shù),在燃煤電站的鍋爐尾部布置低溫省煤器,在干燥裝置尾部布置GGH,以同時(shí)達(dá)到節(jié)能與環(huán)保效果。針對(duì)所提出的清潔高效協(xié)同系統(tǒng),以典型超超臨界1 000 MW一次再熱機(jī)組為案例,以傳統(tǒng)低溫省煤器系統(tǒng)與GGH系統(tǒng)作為參比系統(tǒng),進(jìn)行了熱力學(xué)分析與經(jīng)濟(jì)性分析。結(jié)果表明:新清潔高效協(xié)同系統(tǒng)能增加發(fā)電量14.7 MW,回收水分13.9 kg/s,增加收益2 624萬(wàn)元/a,節(jié)能效果與經(jīng)濟(jì)效益顯著;能夠提升最終排煙溫度到80℃以上,有效提升煙氣浮升力與污染物稀釋能力,同時(shí)降低CO_2排放量54 134 t/a,環(huán)保效果良好
[Abstract]:Low-temperature coal economizer and gas-gas heat exchanger (GGH) have good energy saving and environmental protection effects respectively, but they can not be arranged at the same time. In this paper, a clean and efficient coordination system for coal-fired power plants is proposed. The system applies coal drying technology, which is equipped with low-temperature economizer at the end of the boiler and GGH, at the end of the coal-fired power station in order to achieve energy saving and environmental protection at the same time. Aiming at the proposed clean and efficient cooperative system, the thermodynamic analysis and economic analysis of a typical ultra-supercritical 1 000 MW primary reheating unit and the traditional low temperature economizer system and GGH system as a reference system are carried out. The results show that the new clean and efficient cooperative system can increase the power generation by 14.7 MW, recover water 13.9 kg/s, increase the income by 26.24 million yuan / a, and the energy saving effect and economic benefit are remarkable. It can increase the final exhaust temperature above 80 鈩，

本文編號(hào)：2437012