Effects of flotation on the release behavior of sulfur and nitrogen during coal pyrolysis. Issue 3 (1st February 2016)

• Record Type: Journal Article
• Authors: Wang, Meijun; Fu, Chunhui; Chang, Liping; Xie, Kechang
• Is Part Of: Energy sources. Volume 38:Issue 3(2016)
• Page Start: 347
• Page End: 353
• Publication Date: 2016-02-01
• Subjects: Coal -- flotation -- nitrogen -- pyrolysis -- sulfur; Natural resources -- Periodicals; Energy consumption -- Periodicals; Energy consumption -- Climatic factors -- Periodicals; Energy conversion -- Periodicals; Energy conversion -- Environment aspects -- Periodicals; Power (Mechanics) -- Periodicals; 333.7905
• DOI: 10.1080/15567036.2013.765524
• Languages: English
• ISSNs: 1556-7036

Abstract

ABSTRACT: Two Chinese coals were selected to investigate the effects of flotation on the release behavior of sulfur and nitrogen during pyrolysis. The results show that the removal rate of minerals and sulfur-containing compounds from raw coal by flotation are closely related to coal properties. The significant alterations of sulfur and nitrogen forms on coal surface are mainly presented in the decrease of sulfidic-S, thiophenic-S, and pyridinic-N, the increase of sulfones-S and quaternary-N after flotation. The release of sulfur- and nitrogen-containing gases during pyrolysis of raw and clean coals has evident differences, which are mainly caused by the change of the relative proportions of different sulfur and nitrogen forms in the process of flotation.