Abstract
In the entrained bed coal gasification method it is necessary to fuse and remove ash in coal, so the higher an ash fusion point of the coal is, the higher a temperature in the coal gasifier should be kept. Therefore, the amount of air into the gasifier is increased. Naturally performance of the gasifier tends to be lowered. At present, about 50% of imported coals for electric power use are high ash fusion point coals. To commercialize this coal gasification method, it is important to develop technology for gasifying high ash fusion point coals at high performance by flux addition, coal blending, etc. This paper studies behaviors of ash fusion point lowering by coal blending using high ash fusion point coal and low ash fusion point coal and basic characteristics of coal blending gasification in a 2T/D coal gasifier. As a result, it is found that it is possible to substantially lower the ash fusion point (approximately 350{degree}C or more) by coal blending. Moreover, from results of the bench-scale gasification in the 2T/D gasifier, it is clarified that slag of high ash fusion point coal is reduced by coal blending, improvement of gasification performance becomes possible by reducing the amount
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Inumaru, J;
Hara, S;
Ashizawa, M;
Hamamatsu, T;
[1]
Takekawa, T;
Koyama, T
[2]
- Central Reserach Institute of Electric Power Industry, Tokyo (Japan)
- Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)
Citation Formats
Inumaru, J, Hara, S, Ashizawa, M, Hamamatsu, T, Takekawa, T, and Koyama, T.
Development of high-performance coal gasification technology for high ash fusion point coals by coal blending method. Behavior of coal ash fusion temperature and gasification characteristics; Kontan ni yoru kohaiyutentan koseino gas ka gijutsu no kaihatsu. Haiyuten koka oyobi gas ka kihon tokusei ni kansuru kento.
Japan: N. p.,
1991.
Web.
Inumaru, J, Hara, S, Ashizawa, M, Hamamatsu, T, Takekawa, T, & Koyama, T.
Development of high-performance coal gasification technology for high ash fusion point coals by coal blending method. Behavior of coal ash fusion temperature and gasification characteristics; Kontan ni yoru kohaiyutentan koseino gas ka gijutsu no kaihatsu. Haiyuten koka oyobi gas ka kihon tokusei ni kansuru kento.
Japan.
Inumaru, J, Hara, S, Ashizawa, M, Hamamatsu, T, Takekawa, T, and Koyama, T.
1991.
"Development of high-performance coal gasification technology for high ash fusion point coals by coal blending method. Behavior of coal ash fusion temperature and gasification characteristics; Kontan ni yoru kohaiyutentan koseino gas ka gijutsu no kaihatsu. Haiyuten koka oyobi gas ka kihon tokusei ni kansuru kento."
Japan.
@misc{etde_10142184,
title = {Development of high-performance coal gasification technology for high ash fusion point coals by coal blending method. Behavior of coal ash fusion temperature and gasification characteristics; Kontan ni yoru kohaiyutentan koseino gas ka gijutsu no kaihatsu. Haiyuten koka oyobi gas ka kihon tokusei ni kansuru kento}
author = {Inumaru, J, Hara, S, Ashizawa, M, Hamamatsu, T, Takekawa, T, and Koyama, T}
abstractNote = {In the entrained bed coal gasification method it is necessary to fuse and remove ash in coal, so the higher an ash fusion point of the coal is, the higher a temperature in the coal gasifier should be kept. Therefore, the amount of air into the gasifier is increased. Naturally performance of the gasifier tends to be lowered. At present, about 50% of imported coals for electric power use are high ash fusion point coals. To commercialize this coal gasification method, it is important to develop technology for gasifying high ash fusion point coals at high performance by flux addition, coal blending, etc. This paper studies behaviors of ash fusion point lowering by coal blending using high ash fusion point coal and low ash fusion point coal and basic characteristics of coal blending gasification in a 2T/D coal gasifier. As a result, it is found that it is possible to substantially lower the ash fusion point (approximately 350{degree}C or more) by coal blending. Moreover, from results of the bench-scale gasification in the 2T/D gasifier, it is clarified that slag of high ash fusion point coal is reduced by coal blending, improvement of gasification performance becomes possible by reducing the amount of air into the gasifier, and settlement of the appropriate coal blending ratio improves operational performance. 8 refs., 20 figs., 11 tabs.}
place = {Japan}
year = {1991}
month = {Feb}
}
title = {Development of high-performance coal gasification technology for high ash fusion point coals by coal blending method. Behavior of coal ash fusion temperature and gasification characteristics; Kontan ni yoru kohaiyutentan koseino gas ka gijutsu no kaihatsu. Haiyuten koka oyobi gas ka kihon tokusei ni kansuru kento}
author = {Inumaru, J, Hara, S, Ashizawa, M, Hamamatsu, T, Takekawa, T, and Koyama, T}
abstractNote = {In the entrained bed coal gasification method it is necessary to fuse and remove ash in coal, so the higher an ash fusion point of the coal is, the higher a temperature in the coal gasifier should be kept. Therefore, the amount of air into the gasifier is increased. Naturally performance of the gasifier tends to be lowered. At present, about 50% of imported coals for electric power use are high ash fusion point coals. To commercialize this coal gasification method, it is important to develop technology for gasifying high ash fusion point coals at high performance by flux addition, coal blending, etc. This paper studies behaviors of ash fusion point lowering by coal blending using high ash fusion point coal and low ash fusion point coal and basic characteristics of coal blending gasification in a 2T/D coal gasifier. As a result, it is found that it is possible to substantially lower the ash fusion point (approximately 350{degree}C or more) by coal blending. Moreover, from results of the bench-scale gasification in the 2T/D gasifier, it is clarified that slag of high ash fusion point coal is reduced by coal blending, improvement of gasification performance becomes possible by reducing the amount of air into the gasifier, and settlement of the appropriate coal blending ratio improves operational performance. 8 refs., 20 figs., 11 tabs.}
place = {Japan}
year = {1991}
month = {Feb}
}