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題名 | 臺電LNG發電增設BOG增壓設備經濟可行性分析= |
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作者 | 鍾輝乾; 周錦雲; 林君敏; |
期刊 | 台電工程月刊 |
出版日期 | 19951100 |
卷期 | 567 1995.11[民84.11] |
頁次 | 頁61-73 |
分類號 | 448.16 |
語文 | chi |
關鍵詞 | 液化天然氣; 急速混合; 壓縮機; Liquefied natural gas; LNG; Boiled off gas; Roll over; Compressors; BOG; |
中文摘要 | 因LNG在儲槽及驗氣管線內吸收外界熱能會產生BOG,基於輸氣管線安 全理由,中油所有用戶每小時需維持最低輸氣量,共同分攤BOG量;各用戶BOG 之分攤量係依據其LNG用量佔比來分攤。 臺電解決BOG問題可分兩種方式: (一)離峰負載期間,BOG分攤量經加壓方式直接注入通往興達電廠的專管中,供 電廠以最低小時用氣方式燃用。 (二)離峰負載期間BOG未加壓注入通往興達電廠的專管中,而仍利用LNG之冷能 回收,經氣化後納入中油輪氣幹管。 本研究將依加裝或不加裝加壓設備,維持不同最低小時用氣對系統用氣量之影響 進行分析。結果顯示加裝加壓設備具經濟性及增加調度彈性,但因中油於後來告 知永安第三期擴建計畫中確定不編列加壓設備之預算,而本公司85年度興達工程 預算緊澀無法墊支,如於86年度編列預算,由於增設BOG加壓設備工期需時兩 年,時效上恐緩不濟急,故於84年3月7日之「討論增設BOG增壓設備會議」中決 議暫不加裝加壓設備。 |
英文摘要 | While the liquefied natural gas(LNG) is stored in tanks,some of it vaporizes into gas at the pressure of 5kg/cm�� due toabsorbing the conducted heat from the wall of tank. Thevaporized gas is called Boiled Off Gas(BOG). There are two ways to deal with BOG. One is to burn itout, and the other is to reliquefy it by the cold energy of LNGat a ratio of 1 ton of BOG to 11 tones of LNG. The later isadopted by the Chinese Petroleum. Company(CPC). For the safety of the gas pipelines, users are requested toconsume a minimum amortized amount of gas at any one timein proportion to the annual planned consumption. This makesall the LNG-fired units constantly run and decreases theflexibility of dispatching units against the principle of meritorder dispatch. Accordingly, it is recommended that boostingcompressors be installed at Yeoung-An Terminal to pumpBOG directly into the pipeline leading to the Hsinta ThermalPower Plant. The amount of the recovered BOG enough foroperation of one of the gas turbines at Hsinta Thermal PowerPlant during off-peak. Study includes the tollowing analyses: 1.To simulate the consumption of all kinds of fuels with or without boosting compressors. 2.To compare the expenses among fuels with or without boosting compressors. A software. Electric Generation Expansion Analysis System (EGEAS), has been utilized for making the analysis moreprecise. It is concluded that installation of boosting compressors is economically feasible in spite of around NT$150 millioninvestment. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。