商業化發電系統應用於沼氣，裂解油，氣化燃氣之調控，測試及效益研究

Modulation, Test&Economic Evaluation Study for Power Generation of Bio-gas, Pyntheric Fule &Gasification Synthetic Gas by Commerical Power System

呂孜斌(Lu Tzu Ping)

指導教授 ： 蘇艾

元智大學/工程學院/機械工程學系/碩士(2001年)

摘要

摘 要
本研究首先針對中熱值衍生燃料（沼氣）之淨化及改裝之發電系統調控進行研究，實驗顯示以水浴法去除H2S之效率可達40%，發電後以瓦斯進入引擎燃燒60秒可去除大部分殘留之H2S，延長引擎壽命應用上，規模必須夠大才有經濟效益，否則要有補助措施。本研究評估之宜興牧場(480M3/天)回收年限7.3年，桃園職訓中心污水處理廠則太小(120M3/天)，沒有投資效益。
再者，高熱值衍生燃料（裂解油）雜質及含硫量高，亦是要過濾去除雜質，而若用改裝過之中熱值衍生燃料發電，發電相對效率達60%。發電應用無需補助措施便有顯著效益。本研究評估之台灣日金化學公司(100kg/hr廢輪胎粉處理)，回收年限僅1.8年。
至於低熱值衍生燃料（氣化燃氣），除雜質去除技術有待開發外（本研究複合式去除系統效率僅達89.1%），因熱值及產量不穩定，最好利用暫存槽穩定後，且以瓦斯先啟動10分鐘平穩後再應用。以調配氣體模擬得知，若熱值高於1000kcal/M3才可能啟動，而最好大於1200 kcal/M3才有穩定操作之可能。而修改過之汽油引擎可一體適用高、中、低熱值之衍生燃料。經濟效益上，以本研究評估之巨暉公司(580kg/hr稻殼處理)為例，回收年限4.34年，效益不錯。

關鍵字

二氧化碳 ； 甲烷 ； 一氧化物 ； 碳氫化合物 ； 廢棄物變能源 ； 微生物法 ； 氧化鐵法 ； 碳酸鉀法

並列摘要

Abstract
First, the cleaning of bio-gas (median heating value) and test of refined piston engine for power generation were studied in this paper. The experimental datas reveral that the removal efficiency of H2S in bio-gas is about 40% by absorption of watertank. The most of residual H2S in the engine can be burned out by combustion of natual gas for 60 seconds after turning off the generator. Thus, the corrosion of engine can be prerented and the life time of engine can be lengthen. As for the application, the initial investment can be refunded after 7.3 year (RB) for Yi-Shin animal farm (bio-gas 480M3/day), but, waste-water treatment plant of Twa-Yun skill-for-jobtraining center. The economic evaluation reveals that the proper investment benefit (RB is 3 year) may be reached by large-scale application or by support of government.
Second, 60% power relative to the specific of the experimental power system can be generated by the same refined engine with pyrolysis syn-oil (high heating value), but, the residues in pyrolysis syn-oil results in high SOx emission in flue gas after power generation. As for the application, no any additional support is heeded for attainment of proper investment benefit (RB is 3 year). The initial investment can be refunded only after 1.8 year (RB) for 100kg/hr waste tire pyrolysis plant of Taiwan Zun-Jenn Chemical company by the economic evaluation in this paper.
Third, the stablization of the heating value & producing rate by temporal storage tank, and, the start-up of the same refined engine by natural gas for ten minutes are heeded due to the low heating value of gasification syn-gas. Then, the heating value were simulated by mixture of CH4 & H2. The experimental results reveal that the heating value of syn-gas must be above 900 kcal/M3 for the start-up of the power system. The steady operation of the power system may be achieved if the heating value of the syn-gas is above 1200 kcal/M3. It is proven that the different waste devived synthetic fuel can be applied for power generation with the same refined piston engine, and, modulation of the operation conditions. As for the application, the initial investment can be refunded after 4.34 year (RB) for 580 kg/hr rice-hull gasification plant of Jui-Fey company by the economic evaluation in this paper. Such result is acceptable by Jui-Fey Company for the investment in the neak future.

並列關鍵字

CO2 ； CH4 ； CO ； HCO ； Waste to energy ； Microbial Oxidation ； Iron Sponger ； Benfield

參考文獻

1.Sullivan, D. A., “Gas Turbine Combustor Analysis”, ASME. J. of Engineering for Power, PP. 610-618, 1975.

3.Kapat, J. S., Agrowal, A. K., and Yang, T., “Air Extrction in a Gas Turbine for Integration Gasification Combined Cycle (IGCC): Experiments and Analysis”, ASME J of Engineering for Gas Turbines and Power, Vol. 119, PP. 20-26, 1977.

6.Nakat, T., Sato, M., Niromiya, T., Yashine, T., and Yamada, M., “Effect of Proessure on combustion Characteristics in LBG-Fueled 1300℃-Class Gas Turbine”, ASME J of Engineering for Gas Turbines and Power, Vol. 116. PP 554-558, 1994.

7.Look, C. S., Corman, J. C., and Todd, D. M., “System Evaluation and LBTU Fuel combustion Studies for IGCC Power Generation”, ASME J of Engineering for Gas Turbines and Power, Vol. 117. PP 673-677, 1995.

8.Nakata, T., Sato, Mo, Ninomiya, J., and Hasegawa, T., “A Study on Low Nox Combustion in LBG-FUELED 1500℃-Class Gas Turbine”, ASME J of Engineering for Gas Turbines and Power, Vol. 118.PP 534-540, 1996.