摘要(英) |
Abstract
Most smoke-tube boilers commonly utilize heavy oil as fuel, resulting in the production of high-temperature, high-pressure steam, carbon dioxide emissions,and negative impacts on air quality and global warming. This study aims toexplore the installation of fuel economizers in small and medium-sized smoketube boilers to enhance boiler thermal efficiency, promote energy conservation,and reduce carbon emissions.
For this investigation, 30 sets of smoke-tube boilers were selected, with 15 sets lacking fuel economizers while the remaining 15 sets were equipped with them. The boiler thermal efficiency was assessed using the boiler-efficiency
heat-loss method based on test records. Factors influencing boiler efficiency were compared, and the benefits of energy conservation and carbon reduction were evaluated. All boilers employed identical No. 6 heavy oil as fuel, ensuring
similarity in average total heat input. The most significant factor affecting total heat loss in the boilers was found to be exhaust-gas heat loss, with an average difference of 390 kcal/kg observed between boilers with and without fuel
economizers. Boilers without a fuel economizer exhibited an average thermal efficiency of 89.70%, complying with government regulations that mandate efficiency levels of 87-90% and above. However, the average exhaust-gas temperature of each boiler exceeded the government-specified limit of below 200°C, measuring 230.7°C. Boilers equipped with a fuel economizer demonstrated an average thermal efficiency of 93.68% and a lower exhaust-gas temperature of 145°C, surpassing the government standard.
The boilers analyzed in this study had an evaporation capacity of 6 tons per hour. The cost of installing a fuel economizer was estimated at 1.2 million NT dollars, resulting in an annual fuel saving of approximately 36 tons and a reduction of about 111 tons in carbon emissions. Considering a carbon tax rate of 100 NT dollars per ton and the fuel savings of approximately 780,000 NT dollars, the investment in a fuel economizer could be recovered within one year and seven months.
Keywords: Smoke tube boiler, Fuel economizer, Boiler thermal
efficiency,Energy saving and carbon reduction. |
參考文獻 |
參考文獻
[1] 鍾孟吟,比較加入不同添加劑提升鍋爐燃燒效率之效應,嘉南藥理科
技大學環境工程與科學研究所碩士論文,2010。
[2] 張誌峰,比較不同添加劑對鍋爐熱效率及空氣污染物排放之影響,嘉
南藥理科技大學環境工程與科學研究所碩士論文, 2013。
[3] 曹昭聖,使用富氧燃燒之燃氣鍋爐與燃油鍋爐之性能比較研究, 國立
交通大學機械工程研究所碩士論文,2015。
[4] Qiu K. and Hayden A.C.S., “Increasing the efficiency of
radiantburners by using polymer membranes”, Applied
Energy,Vol. 86, pp.349-354, 2009.
[5] 特種機械設備安全 P30,台灣省鍋爐協會,2016。
[6] 「新設鍋爐能源效率標準」經濟部能源委員會公告,2001。
[7] 行政院公報,第 108 卷,第 054 期,財政經濟篇,2012。
[8] 鍋爐及壓力容器規則,2014。
[9] 洪鼎倫,合金鋼在超臨界、超超臨界鍋爐管的應用,ITIS 產業評析,
金屬中心,高雄,2016。
[10] 謝明輝,鍋爐學,燃料與燃燒,P. 239~P. 264,臺灣省鍋爐協會,
台中,1991。
[11] 陳昭忞,重油鍋爐煙道排放之 PM2.5及 PM10微粒的特性及化學組
成,國立中興大學環境工程研究所碩士論文,2002。
[12] Miller, C.A.; Linak, W.P.; King, C.; and Wendt, J.O.L.,
Fine Particle Emissions from Heavy Fuel Oil Combustion
in a Firetube Package Boiler,Combustion Science and
Technology, Vol. 13, pp. 477-502, 2010.
[13] M.D Avakian,.; Dellinger, B.; Fiedler, H.; Gullet B.;
Koshland, C.; Narklund,S.; Oberdorster,G.; Safe, S.;
Sarofum, A.; Smith, K.R.; Schwartz, D.; and WillianA
Suk, The origin. Fate, and health effects of
combustion by-56 products: a research
framework,Environ Health Perspect, 2002.
[14] 宋子毅,乳化重油鍋爐燃燒效率提升與燃燒廢氣分析之研究,元智大
學環境工程與科學研究所碩士論文,2014。
[15] Kuo-Kuang Wu, Yu-Cheng Chang, Chiun-Hsun Chen, Young-Da
Chen,“High-efficiency combustion of natural gas with
21-30% oxygen-enriched air ”, Fuel, pp 2455-2462,2010。
[16] 薩維加,以氫氧氣改善鍋爐的燃燒效率與廢氣排放之研究,國立高雄
應用科技大學製造與管理研究所外國學生碩士專班碩士論文,2015。
[17] 莊書豪,羅福山,重油鍋爐改瓦斯鍋爐之技術分析,機械技師學刊,
8 卷 4 期,P35-43,2015。
[18] Mansir, IB; Ben-Mansour, R; Habib, MA.Oxy-fuel
combustion in a twopass oxygen transport reactor for
fire tube boilerapplication, APPLIED ENERGY,Vol
229,page828-840,2018。
[19] 李政道,鍋爐蒸氣系統節能及實例,工業技術研究院服務系統科技中
心, 新竹 2013。
[20] 林宗茂,鍋爐煙囪熱回收節能效益之研究,國立嘉義大學土木與水資
源工程研究所碩士論文,2007。
[21] 李志杰,鍋爐燃燒懸浮粒子排放減量與節能燃燒技術,工研院中院,
2016。
[22] 陳建志,新設鍋爐效率檢測與蒸汽乾度之關係,台灣省鍋爐協會,
2014。
[23] CNS2141 B1025 陸用鍋爐之效率。
[24] 「鍋爐能源效率標準」經濟部能源委員會公告,2013。
[25] S.Krishnanunni,Josephkunju Paul C,Mathu Potti, Ernest
Markose Mathew. Modeling of fire-tube boilers, Applied
Thermal Engineering Volume 31,57 Issue 16, Pages 3463-
3478,2011 。
[26] 「 質量平衡計算書」,https://www.ilepb.gov.tw>Open
Attch_idPDF |