RESIDUES FROM SINGLE-STAGE DRY DE-DUSTING AND DESULPHURIZATION OF SINTER PLANT OFF-GAS: ENABLING PARTIAL RECIRCULATION BY AIR CLASSIFICATION

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LANZERSTORFER C.; NEUHOLD R.

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Paper Information

Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST) Year:2015 | Volume:12 | Issue:9 Page(s): 0-0

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Title

RESIDUES FROM SINGLE-STAGE DRY DE-DUSTING AND DESULPHURIZATION OF SINTER PLANT OFF-GAS: ENABLING PARTIAL RECIRCULATION BY AIR CLASSIFICATION

Author(s)

LANZERSTORFER C. | NEUHOLD R.

Keywords

SINTER PLANT

GAS CLEANING RESIDUE

RECYCLING

AIR CLASSIFICATION

Abstract

In iron ore SINTER PLANTs, the process off-gas is de-dusted by electrostatic precipitators which are installed upstream of the fan. For further reduction of emissions, a second cleaning stage can be installed. This stage usually comprises a sorption process for removal of acid gases and polychlorinated dibenzo (p) dioxins and furans, followed by a fabric filter. The residue from the first de-dusting stage can be recirculated to the sintering process. The residue from the second cleaning stage has to be disposed of in landfill sites. A new single-stage off-gas cleaning concept for SINTER PLANTs comprises an entrained flow sorption process and a fabric filter, installed upstream of the fan. In this way, the investment costs for the off-gas cleaning system can be reduced significantly. However, it would become necessary to dispose of most of the residue. In this work, AIR CLASSIFICATION of a residue equivalent to that of a single-stage off-gas cleaning unit was investigated with the aim of producing a fraction of this residue with reduced sulphur and chloride concentrations which can then be recycled. The results confirm that AIR CLASSIFICATION is a suitable process. In order to maintain raw mixture targets for chlorine or to avoid chlorine enrichment in the raw feed, the recommended dust RECYCLING rate is 66% with AIR CLASSIFICATION which is an improvement over the allowed rates without AIR CLASSIFICATION of 42%.

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APA: Copy

LANZERSTORFER, C., & NEUHOLD, R.. (2015). RESIDUES FROM SINGLE-STAGE DRY DE-DUSTING AND DESULPHURIZATION OF SINTER PLANT OFF-GAS: ENABLING PARTIAL RECIRCULATION BY AIR CLASSIFICATION. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 12(9), 0-0. SID. https://sid.ir/paper/286229/en

Vancouver: Copy

LANZERSTORFER C., NEUHOLD R.. RESIDUES FROM SINGLE-STAGE DRY DE-DUSTING AND DESULPHURIZATION OF SINTER PLANT OFF-GAS: ENABLING PARTIAL RECIRCULATION BY AIR CLASSIFICATION. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)[Internet]. 2015;12(9):0-0. Available from: https://sid.ir/paper/286229/en

IEEE: Copy

C. LANZERSTORFER, and R. NEUHOLD, “RESIDUES FROM SINGLE-STAGE DRY DE-DUSTING AND DESULPHURIZATION OF SINTER PLANT OFF-GAS: ENABLING PARTIAL RECIRCULATION BY AIR CLASSIFICATION,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), vol. 12, no. 9, pp. 0–0, 2015, [Online]. Available: https://sid.ir/paper/286229/en

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