The evolution characteristic of sulfur-containing gases during the hydropyrolysis of coal macerals
Abstract：The weight loss and evolution characteristic of sulfur-containing gases released from the hydropyrolysis of Yanzhou coal macerals was on-line analyzed using a mass spectroscopy combined with TG-151 thermobalance. The results show that vitrinite has higher H2S and COS evolution at about 470 ℃ than inertinite, while inertinite has higher H2S and COS evolution than vitrinite at about 570 ℃, which indicates that vitrinite has higher organic-sulfur content and inertinite has higher pyretic-sulfur content. The different evolution behaviors of SO2 be- tween vitrinite and inertinite suggest that vitrinite has higher content of aliphatic sulfur and lower aromatic content than inertinite. The vitrinite has higher C4 H4S and C8 H6S evolution than inertinite, suggesting that vitrinite has more thiophene and benzo[b] thiophene structural units directly connecting with macromolecular of coal by weak bridge bonds than inertinite. The strength and distribution of evolution of sulfur-containing gases reflects the difference in forms and content of sulfur in coal macerals, which also shows the relationship between the forms of sulfur and evolution behavior during the hydropyrolysis of macerals.
Keywords：Yanzhou coalhydropyrolysissulfur-containing gasesevolution characteristic
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 800-804 )