著者

藤元 薫 功刀 泰碩

出版者

一般社団法人 日本エネルギー学会

雑誌

燃料協会誌 (ISSN:03693775)

巻号頁・発行日

vol.62, no.9, pp.728-744, 1983-09-20 (Released:2010-06-28)

参考文献数

51

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The study of slurry phase Fischer-Tropsch synthesis which is operated by introducing synthesis gas into the suspension of fine powdery catalyst in heavy oil was begun in Germany during World War II. After the war, investigations were coducted in West Germany, in England, in the United States and in Japan to prove the excellence of the process.The slurry process which utilizes precipitated iron catalyst is characterized by the flexibility with which it can process CO rich gas with CO/H2 ratio up to 0.9 to give naphtha, middle distillates or heavy oils as the major products. The change in product pattern is achieved by only regulating catalyst composition and reaction temperature. The processing of CO rich gas in the slurry reactor is not only suitable for utilizing the product gas from the second generation coal gasifiers but also favorable for highly efficient F-T process. It is pointed out that the slurry process should be aimed at diesel fuel production because of the chemical character of products. The low productivity of slurry reactor is expected to be overcome by adopting some new technologies.

著者

藤元 薫

出版者

一般社団法人 日本エネルギー学会

雑誌

燃料協会誌 (ISSN:03693775)

巻号頁・発行日

vol.66, no.1, pp.2-12, 1987-01-20 (Released:2011-02-23)

参考文献数

10

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A synthetic fuel plant which was built at Motunui (North Island, New Zealand) has began the commercial operation on March 1986 . The plant which has been constructed and operated by NZSFC (New Zealand Synthetic Fuels Corporation), produces 570, 000 tons of gasoline a year from 1 billion cubic meter of natural gas.The process for producing gasoline from natural gas is as follows:1. Natural gas is introduced with a pipe line from Maui which is one of the world largest off-shore gas field.2. The natural gas is converted to methanol with two trains of conventional ICI methanol syn thesis process.3. Crude methanol from the methanol plants is converted to gasoline with MTG (Methanol to Gasoline) process.The MTG process, which is developed by Mobil Oil Corporation (USA), convert methanol to hydrocarbon mixture composed of the aromatic-rich hydrocarbon mixture at around 400°C and under pressure, using a special zeolite (ZSM-5) developed by Mobil Corporation . The process gives gasoline (97 RON) with about 85% selectivity accompanied by small amount of LPG (Liquified petroleum Gas). The product gasoline is supplied to other petroleum refinery as a gasoline base oil.The conversion efficiency (energy base) of natural gas to synthetic fuel is estimated to be 56% (gasoline plus LPG) or 50% (gasoline only). The construction cost of the plant is estimated to be US $ 1, 218 million (on July 1985). The production cost of gasoline will be 56 (NZ¢/l) 2 in 1987 and 20 NZ¢/ l in 2000 .The operation of the huge synthetic fuel plant will result in the self supply level of the trans portation fuels as high as 54% in 1987 and also result in the crude oil import of 1, 640 thousand tons which is only 38% of that in 1973.

著者

金 英傑 浅岡 佐知夫 黎 暁紅 朝見 賢二 藤元 薫

出版者

公益社団法人 石油学会

雑誌

Journal of the Japan Petroleum Institute (ISSN:13468804)

巻号頁・発行日

vol.48, no.2, pp.97-105, 2005-03-01

参考文献数

15

被引用文献数

4

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天然ガスからの燃料合成の潜在的ルートであるメタノールおよび/あるいはジメチルエーテル(DME)の液化石油ガス(LPG)への転化について,H-ZSM-5およびH-FeAlMFI-シリケート触媒上で,高転化率でLPG成分への高選択性が得られる条件,生成エチレンのリサイクル,触媒の活性低下と再生を検討した。<br> LPG選択性は,触媒性能,反応温度,原料分圧および接触時間に依存した。原料分圧が高くなるほど,炭化水素生成物分布が広幅になった。エチレンは,H-ZSM-5触媒上ではメタノールおよび/ないしDMEとの組合せ反応によって,LPGに選択的に転化できた。LPGのプロセス選択性は,生成したC₂成分を可能なリサイクル比で反応器に循環すれば,大幅に向上できることが明らかとなった。ただし,ワンスルーで良好なH-FeAlMFI-シリケート触媒はリサイクルモードでは能力が発揮できないことが判明した。活性の低下した両触媒とも適度の炭素燃焼処理によって,成分選択性を含めてうまく再生することができた。H-FeAlMFI-シリケート触媒は,H-ZSM-5に比べてわずかな活性低下におさまっており,またFeを骨格に導入することにより再生と反応の繰返しによる活性を抑えることができた。この触媒について観察される再生に伴う安定性の改善は強酸点の消失に起因すると推定した。<br> 以上,エチレンリサイクルモードでの使用を除くと,H-ZSM-5触媒よりもH-FeAlMFI-シリケート触媒がよい触媒であることが分かった。<br>