Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/13613
Title: The Effect of Low Concentration of Oxygen on the Removal of Stable Sulfur in Coal
Authors: Bai, Zong-qing
Li, B.
LI, Wangfang 
LIU, Feng 
YPERMAN, Jan 
Issue Date: 2012
Publisher: TAYLOR & FRANCIS INC
Source: ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, 34 (5), p. 447-455
Abstract: In this work, several typical organic sulfur model compounds, including thiophenic and dibenzothiophenic sulfur: and one Chinese coal, Wujiaping, with more organic sulfur were pyrolyzed under 1.0% O-2/Helium (He) and the sulfur forms released were detected by on-line mass spectroscopy in order to investigate the effect and the mechanism of low concentration of oxygen on the removal of the stable organic sulfurs in coal in view of model compounds. The results show that the specific peak temperature of sulfur release is decreased during pyrolysis of the stable thiophenic sulfur model compounds under low concentration of oxygen compared to that under inert atmosphere. It indicates that the low concentration of oxygen has a positive effect of on removal of the stable sulfur: When Wujiaping coal is pyrolyzed under 1.0% O-2/He, the peak temperature of SO2 is always: lower than those of CO? and CO, indicating that the oxidation of sulfur occurred before that of the organic carbon frame of coal. The coal pyrolysis lest showed that the low concentration of oxygen could increase the efficiency of sulfur removal while the char yield could not be decreased remarkably.
Notes: [Bai, Z.; Li, B.; Li, W.; Liu, F.] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China. [Yperman, J.] Hasselt Univ, CMK, Lab Appl Chem, Diepenbeek, Belgium.
Keywords: Energy & Fuels; Engineering, Chemical; Environmental Sciences;low concentration of oxygen; mass spectroscopy; organic sulfur model compound; pyrolysis; sulfur removal
Document URI: http://hdl.handle.net/1942/13613
ISSN: 1556-7036
e-ISSN: 1556-7230
DOI: 10.1080/15567031003614706
ISI #: 000301968700008
Category: A1
Type: Journal Contribution
Validations: ecoom 2013
Appears in Collections:Research publications

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