Characteristics of ignition on the sand layer combustion

T. Yokomori, S. G. Kim, N. I. Kim, T. Kataoka, S. Maruyama, K. Maruta

Research output: Contribution to conferencePaperpeer-review

Abstract

To gain further understanding of the combustion in a sand layer of fluidized bed, the characteristics of methane-air premixed gas combustion in a packed sand bed were studied according to the equivalence ratio and the sand temperature. CO2 concentrations increased at > 950°C for equivalence ratios of 0.2:1-2.5:1. The sand temperature also increased after supplying the fuel at > 950°C. Thus, combustion in the sand started at > 950°C. The sand temperatures for stable combustion were the same for each equivalence ratio and combustion occurred without flammability limit. CO concentration increased significantly at ∼ 900°C. A simple numerical simulation showed that the residence time of the gas in the tube was closely equal to the reaction delay time, which strongly depends on the gas temperature. Thus, to start reactions including the CO generation probably depend on the temperature and residence time of the gas in sand layer. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).

Original languageEnglish
Number of pages1
Publication statusPublished - 2004 Jan 1
Externally publishedYes
Event30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations - Chicago, IL, United States
Duration: 2004 Jul 252004 Jul 30

Other

Other30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations
CountryUnited States
CityChicago, IL
Period04/7/2504/7/30

ASJC Scopus subject areas

  • Engineering(all)

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