کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8071652 | 1521398 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel boiler cold-end optimisation system based on bypass flue in coal-fired power plants: Heat recovery from wet flue gas
ترجمه فارسی عنوان
یک سیستم بهینه سازی سرد برقی بویلر مبتنی بر سوپاپ بایوب در نیروگاه های زغال سنگ: بازیابی گرما از گازهای مرطوب
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کلمات کلیدی
بهینه سازی سرد پایان، بازیابی گرما زباله، بهره وری حرارتی، تجزیه و تحلیل تکنولوژیکی و اقتصادی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
Recovering waste heat from the flue gas of coal-fired power plants and utilizing it reasonably is an effective way to increase power plant efï¬ciency. The bypass ï¬ue process is an improved boiler cold-end optimisation process and has greater energy savings than the traditional low-temperature economizer process. To achieve better stepwise utilization of flue gas, a novel boiler cold-end optimisation system based on bypass flue was proposed in this study. In the proposed process, flue gas waste heat after the wet ï¬ue gas desulphurizer was recovered and used as the first-stage heat source to preheat the ambient air, resulting in less heat transfer in the air preheater and more ï¬ue gas flowing into the bypass ï¬ue. The thermodynamic and techno-economic performance of the novel process were calculated and compared with the bypass flue process, using data from a typical 1000â¯MW coal-fired power plant. The thermal economy results show that the net standard coal consumption rate of the proposed process could decrease by 5.38â¯g/(kW·h) compared with the original unit, a 1.76â¯g/(kW·h) greater reduction than the 3.62â¯g/(kW·h) of the bypass ï¬ue process. The techno-economic analysis results show that the net present value of the 15 years lifespan is 21.61 million USD compared with the original unit, and is 5.13 million USD more than the 16.48 million USD of the bypass ï¬ue process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 152, 1 June 2018, Pages 84-94
Journal: Energy - Volume 152, 1 June 2018, Pages 84-94
نویسندگان
Min Yan, Liang Zhang, Yuetao Shi, Liqiang Zhang, Yuzhong Li, Chunyuan Ma,