Behavior of metals in ash melting and gasification-melting of municipal solid waste (MSW)

• Jung, C. H.

• Matsuto, T.

• Tanaka, N.

抄録

In this study, metal behavior in ash-melting and municipal solid waste (MSW) gasification-melting facilities were investigated. Eight ash-melting and three MSW gasification-melting facilities with a variety of melting processes and feedstocks were selected. From each facility, melting furnace fly ash (MFA) and molten slag were sampled, and feedstock of the ash-melting processes was also taken. For the ash melting process, the generation rate of MFA was well correlated with the ratio of incineration fly ash (IFA) in feedstock, and this was because MFA was formed mostly by mass transfer from IFA and a limited amount from bottom ash (BA). Distribution ratios of metal elements to MFA were generally determined by volatility of the metal element, but chlorine content in feedstock had a significant effect on Cu and a marginal effect on Pb. Distribution ratio of Zn to MFA was influenced by the oxidizing atmosphere in the furnace. High MFA generation and distribution ratio of non-volatile metals to MFA in gasification-melting facilities was probably caused by carry-over of fine particles to the air pollution control system due to large gas volume. Finally, dilution effect was shown to have a significant effect on metal concentration in MFA.

収録刊行物

• Waste Management

  Waste Management 25 (3), 301-310, 2005

  Elsevier

キーワード

• ash-melting
• gasification-melting
• melting furnace fly ash (MFA)
• generation rate of MFA
• distribution ratio of metal

詳細情報

• CRID: 1050282813955590656
• NII論文ID: 10018291900
• HANDLE: 2115/13702
• ISSN: 0956053X
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles