Formulation of oxidation reaction rate for deposit carbon in a coke oven chamber by thermogravimetry

Keiko Yoshida, Huhetaoli, Yohsuke Matsushita, Hideyuki Aoki, Shoji Tanno, Takatoshi Miura

Research output: Contribution to journalArticle

Abstract

Deposit carbon on the wall disturbs a stable operation in a coke-oven battery while it plays an important role to seal up the liner bricks between a coking chamber and a combustion chamber. Therefore it is important to control the thickness of deposit carbon. Thus, it is necessary to estimate oxidation reactivity of deposit carbon. In this study, the thermogravimetry was carried out and the oxidation reaction rate was formulated for deposit carbon. In the measurement, deposit carbon samples were heated up to 1273 K at four different heating rates using thermogravimetric analyzer (TGA). It was found the deposit carbon has lower oxidation reactivity than coal char and coke and higher oxidation reactivity than graphite material. In the formulation, the activation energy and the reaction mechanism model were determined by Friedman method and by master-plot method, respectively. The evaluated equation well predicted experimental data on the oxidation reaction rate of deposit carbon.

Original languageEnglish
Pages (from-to)201-206
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume94
Issue number6
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes

Keywords

  • Coke oven chamber
  • Deposit carbon
  • Formulation
  • Oxidation reaction rate
  • Thermogravimetric analyzer (TGA)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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