No.1 Catalytic Decomposition of Tar Nitrogen with Limonite : Effect of the Kind of Coexisting Gas on the Activity of Limonite Catalyst in Pyridine Decomposition
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- Ogawa Ayumu
- Hokkaido University
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- Mochizuki Yuuki
- Hokkaido University
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- Tsubouchi Naoto
- Hokkaido University
Bibliographic Information
- Other Title
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- No.1 褐鉄鉱を用いるタール中窒素の分解除去 : 褐鉄鉱のピリジン分解性能に及ぼす共存ガスの影響(改質・処理・クリーン化(1)、熱分解・コークス(1))
Description
Catalytic performance of α-FeOOH-rich limonite in the decomposition of 100 ppmv pyridine (C_5H_5N) in different atmospheres under a large space velocity of 51000 h^<-1> has been investigated with a fixed bed quartz reactor to develop a novel hot gas cleanup method of removing the nitrogen in tar as N_2. The limonite catalyst achieves the almost complete decomposition of C_5H_5N in He at 500-750℃ and gives high N_2 yield of more than 80% at least for 10h at 500℃. The limonite is seriously deactivated by cofeeding syngas (20% CO/10% H_2) with C_5H_5N because of carbon deposition from CO. On the other hand, the addition of 10% CO_2 to the syngas improves the catalytic activity and restores the yield at 750℃ to ≥ 80% without carbon deposition.
Journal
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- Proceedings of Conference on Coal Science
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Proceedings of Conference on Coal Science 51 (0), 2-3, 2014
The Japan Institute of Energy
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Details 詳細情報について
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- CRID
- 1390001205770822656
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- NII Article ID
- 110009926045
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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