Effect of meso-scale pore structure on coke strength

Yasuhiro Saito, Tetsuya Kanai, Yoshiaki Yamazaki, Yohsuke Matsushita, Hideyuki Aoki, Seiji Nomura

Research output: Contribution to journalArticle

Abstract

To explore the factors that affect coke strength in the meso-scale pore structure of coke, we investigated the relationship between the strength and meso-scale pore structure of the polished surface of coke sample. Coke was fractured using diametral-compression tests, and the tensile strength of coke was measured. Furthermore, we observed the polished surface of coke and obtained combined images with a size of 10 mm × 10 mm. The size and roundness of the pores were evaluated by image analysis. The pores were classified according to the pore size, and the strength of coke with many pores with a diameter of more than 1000 μm was indicated to be low. Moreover, the roundness of pores with a diameter of more than 1000 μm was low. Therefore, pores with diameter of more than 1000 μm and low roundness are considered to greatly affect the strength of coke in a meso-scale structure.

Original languageEnglish
Pages (from-to)93-101
Number of pages9
JournalNihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy
Volume96
Issue number4
Publication statusPublished - 2017

Keywords

  • Coke
  • Coke strength
  • Image analysis
  • Microstructure
  • Pore structure

ASJC Scopus subject areas

  • Energy(all)

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