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

DOI

Bibliographic Information

Other Title
  • 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))

Abstract

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 &ge; 80% without carbon deposition.

Journal

Details 詳細情報について

  • CRID
    1390001205770822656
  • NII Article ID
    110009926045
  • DOI
    10.20550/jiesekitanronbun.51.0_2
  • ISSN
    24238309
    24238295
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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