DESULFURIZATION BEHAVIOR OF YANZHOU COAL THROUGH PYROLYSIS(Ⅰ) SULFUR TRANSFER DURING PYROLYSIS

XU Long; YANG Jianli; LI Yunmei; LIU Zhenyu

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DESULFURIZATION BEHAVIOR OF YANZHOU COAL THROUGH PYROLYSIS(Ⅰ) SULFUR TRANSFER DURING PYROLYSIS

更新时间：2025-12-10

- DESULFURIZATION BEHAVIOR OF YANZHOU COAL THROUGH PYROLYSIS(Ⅰ) SULFUR TRANSFER DURING PYROLYSIS
- CIESC Journal Issue 10, Pages: 1430-1435(2003)
- 作者机构：
  
  中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西,太原,030001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 October 2003，
  
  Published：25 October 2003
- 稿件说明：
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XU Long, YANG Jianli, LI Yunmei, et al. DESULFURIZATION BEHAVIOR OF YANZHOU COAL THROUGH PYROLYSIS(Ⅰ) SULFUR TRANSFER DURING PYROLYSIS[J]. CIESC Journal, 2003, (10): 1430-1435.
DOI：

XU Long, YANG Jianli, LI Yunmei, et al. DESULFURIZATION BEHAVIOR OF YANZHOU COAL THROUGH PYROLYSIS(Ⅰ) SULFUR TRANSFER DURING PYROLYSIS[J]. CIESC Journal, 2003, (10): 1430-1435. DOI：

摘要

煤在一定条件下通过热解或部分气化产生可直接用于燃烧的低硫半焦，这一煤燃前预脱硫技术是实现煤炭高效、低污染利用的理想途径之一.在固定床反应器上对兖州煤进行了热解脱硫的研究，在TPD-FPD在线分析装置上分析了兖州煤中硫在热解过程中向气相转移的主要动态特征.结果表明：700℃前，兖州煤中硫向气相的转移出现在两个显著的温度范围，分别在470℃和560℃左右.通过SEM-EDX和XPS光谱分析技术对兖州原煤及其热解半焦中硫的形态及形貌进行了剖析，发现兖州原煤中黄铁矿主要与其他矿物伴生存在，而有机硫的分布极不均匀且以大量噻吩类硫形态存在，并且热解过程中其他形态的硫还向噻吩类硫转移，这就给实现兖州煤的低温高效率脱硫造成了困难.

Abstract

Pyrolysis or partial gasification transforms a portion of the solid coal into gas and liquids

and may possibly generate low sulfur chars for clean combustion. Yanzhou coal was pyrolyzed in a fix-bed reactor from room temperature up to 800℃ with a heating rate of 10℃8226;s-1. The dynamic profile of sulfur emission from coal to gas phase was obtained by TPD-FPD method

and two obvious peaks (at 470℃ and 560℃) were observed. Furthermore

the sulfur compounds in coal and chars were analyzed by XPS and SEM-EDX. It was found that there was a fair amount of thiophenes in Yanzhou raw coal

and under the pyrolysis conditions some thiophenes might come from other sulfur compounds during processing.

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