Effects of Pretreatment and Additives on Boron Release during Heat Treatment of Coal
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- MOCHIZUKI Yuuki
- Venture Business Laboratory, Akita University
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- SUGAWARA Katsuyasu
- Faculty of Eng. & Resource Science, Akita University
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- ENDA Yukio
- Akita Prefactural R & D Center
Bibliographic Information
- Other Title
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- No.72 石炭熱処理時におけるホウ素の放出に及ぼす前処理と添加剤の影響(灰・微量金属(3))
Abstract
Boron is one of the most toxic and high volatile elements present in coal. As part of a series of studies carried out on coal cleaning to prevent environmental problems and to promote efficient coal utilization processes, the removal of boron by leaching with water and acetic acid has been investigated. The effects of the addition of ash components, that is, SiO_2, Al_2O_3 and CaO in the control of boron release during pyrolysis and gasification were investigated. Here, 20-60% of boron in coal was removed by leaching the coal with water and acetic acid. Boron leached by water and acetic acid was related to volatiles released from coal in pryrolysis below 1173K. The addition of ash components such as SiO_2 and Al_2O_3 was found to be effective in suppressing the release of boron during pyrolysis at temperatures below and above 1173K, respectively. The addition of CaO to coal was effective in suppressing the release of boron during gasification at 1173K.
Journal
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- Proceedings of Conference on Coal Science
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Proceedings of Conference on Coal Science 46 (0), 142-143, 2009
The Japan Institute of Energy
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Details 詳細情報について
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- CRID
- 1390282680746677248
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- NII Article ID
- 110007520701
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- ISSN
- 24238309
- 24238295
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed