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Gasification of municipal solid waste in a pilot plant and its impact on environment

Authors
  • Kwak, Tae-Heon1, 2
  • Lee, Seungmoon1
  • Park, Jin-Won1
  • Maken, Sanjeev1
  • Yoo, Young Done3
  • Lee, Sang-Houck4
  • 1 Yonsei University, Energy & Environment Lab, Department of Chemical Engineering, Shinchon-dong 134, Seodaemoon-gu, Seoul, 120-749, Korea , Seoul (South Korea)
  • 2 Institute of Woojo Envitech, Yeongdeungpo-gu, Seoul, 150-806, Korea , Seoul (South Korea)
  • 3 Institute of Advanced Engineering, Plant Engineering Centre, 633-2, Goan-ri, Baegam-myeon, Yongin, Gyeonggi-do, 442-380, Korea , Gyeonggi-do (South Korea)
  • 4 K-TECHNOCON Company, 694-7, Daelim 3-dong, Seoul, 150-073, Korea , Seoul (South Korea)
Type
Published Article
Journal
Korean Journal of Chemical Engineering
Publisher
Springer-Verlag
Publication Date
Nov 01, 2006
Volume
23
Issue
6
Pages
954–960
Identifiers
DOI: 10.1007/s11814-006-0014-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

Municipal solid waste from three cities was gasified in a 3 ton/day capacity gasification/melting pilot plant based on Thermoselect at a temperature of around 1,200 °C using double inverse diffusion flame burner. The synthesis gas (syngas) obtained from gasification contains 25–34% CO and 28–38% of H2. The high heating value of syngas was in the range of 10.88–14.65MJ/Nm3. Volatile organic compounds like furan, dioxin, and other organics in gaseous and liquid phase were effectively destroyed because of the high temperature of the high temperature reactor and shock cooling of syngas. Pollutants in exhaust gases were also found to be satisfying the Korean emission standard. Leaching concentration of heavy metals in the melted slag (vitrified mineral aggregate), fly ash, and treated water was much less than the Korean regulatory limit values due to high melting temperature (1,600 °C). The vitrified slag was of dark brown color. The glassy and amorphous nature of the vitrified mineral aggregate was further confirmed from SEM micrograph and XRD spectra of slag. The vitrified mineral aggregate could be used as natural raw material in cement and construction industry.

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