Practical concepts to minimize the emission of halogenated organic compounds from municipal solid waste incinerators

Jäger, Johannes; Wilken, Michael; Beyer, Andreas; Rakel, H.; Zeschmar-Lahl, Barbara; Jager, E

doi:10.1016/0045-6535(93)90286-e

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…Even after 10 h of sulfur addition (run 2), no decrease in PCDD/F formation was detectable. When cleaning the tube boiler by a mechanical cleaning device, the PCDD/F concentrations showed a significant peak which is caused by the release of PCDD/F Johnke and Stelzer, 1992;Jager et al, 1993) concentrated inside the porous structure of the ash deposits. This indicates again that PCDD/F formation takes place predominantly in the boiler deposits.…”

Section: Long-term Increase Of Somentioning

confidence: 98%

Reduction of PCDD/F Formation in MSWI by a Process-Integrated SO₂ Cycle

Hunsinger

Seifert

Jay

2007

Environmental Engineering Science

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PCDD/F formation in MSWI predominantly takes place by de novo synthesis in the ash deposits in the boiler. Permanently high SO 2 concentrations cause sulfation of the boiler ash and the fly ash, which leads to low chloride concentrations in the ash deposits. This results in very low PCDD/F formation rates. High SO 2 levels can be established in an efficient way by a process-integrated SO 2 cycle, with only the SO 2 generated by the combustion process being used. The S-recycling process can be supported by reducing the transfer rates of CaO particles to the flue gas by a low primary air supply. No additional source of sulfur is needed. No negative effects of the S-recycling process on the separation of other pollutants like Hg could be observed. These findings indicate that the PCDD/F emission standards can already be met upstream of the flue gas cleaning system by these primary measures only. The flue gas cleaning efforts can be reduced without changing the emission standards.

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Section: Long-term Increase Of Somentioning

confidence: 98%