Effect of Fe<sub>2</sub>O<sub>3</sub> on transformation and migration of sulfur in Xiaolongtan lignite during pyrolysis

JIA Xin; WANG Qinhui; CHEN Yifan; CHENG Leming; FANG Mengxiang; LUO Zhongyang; CEN Kefa

doi:10.19666/j.rlfd.201809162

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Effect of Fe₂O₃ on transformation and migration of sulfur in Xiaolongtan lignite during pyrolysis

Thermal Power Generation Vol. 47, Issue 12, Pages: 60-65(2018)

更新时间：2025-05-30

- Effect of Fe₂O₃ on transformation and migration of sulfur in Xiaolongtan lignite during pyrolysis
- 作者机构：
  
  1. 浙江大学能源清洁利用国家重点实验室
  2. 沈阳环境科学研究院辽宁省城市生态重点实验室
  3. 浙江大学能源清洁利用国家重点实验室
  4. 沈阳环境科学研究院辽宁省城市生态重点实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201809162
  CLC： TQ530.2
- Published：2018
- 稿件说明：
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JIA Xin, WANG Qinhui, CHEN Yifan, et al. Effect of Fe₂O₃ on transformation and migration of sulfur in Xiaolongtan lignite during pyrolysis[J]. Thermal Power Generation2018, 47(12): 60-65.
DOI：

JIA Xin, WANG Qinhui, CHEN Yifan, et al. Effect of Fe₂O₃ on transformation and migration of sulfur in Xiaolongtan lignite during pyrolysis[J]. Thermal Power Generation2018, 47(12): 60-65. DOI： 10.19666/j.rlfd.201809162.

摘要

为了分析Fe_2O_3对煤热解过程中硫迁移特性的影响

在慢速升温固定床反应装置上分别开展了小龙潭原煤以及添加质量分数为5%Fe_2O_3的煤样在热解过程中硫的迁移和转化特性的实验研究。结果表明:Fe_2O_3会与煤气中H_2S发生固硫反应

使得煤气中的大部分硫以FeS_x的形式固定在半焦中

从而明显降低了H_2S的逸出量并增加了硫化物硫的生成量;添加Fe_2O_3可以降低焦油中硫的析出;Fe_2O_3在整个热解温度范围内都促进了硫酸盐硫的分解

表明Fe_2O_3可以同时促进硫酸铁和硫酸钙的分解;Fe_2O_3的添加促进了有机硫的脱除。

Abstract

To study the effects of Fe_2O_3 on transformation characteristics of sulfur during coal pyrolysis

the pyrolysis experiments for Xiaolongtan(XLT)raw coal and its mixture adding 5%(mass proportion)Fe_2O_3 were carried out in a fixed bed reactor.The results show that

Fe_2O_3 reacted with H_2S in the coal gas

thus most sulfur in the coal gas was fixed in the semi-coke in form of FeS_x

thereby the release amount of H_2S reduced significantly and sulfide sulfur in char increased.Adding Fe_2O_3 in the coal prevented precipitation of sulfur from tar.In addition

Fe_2O_3 promoted the decomposition of sulfate sulfur in the whole pyrolysis temperature range

which indicated that Fe_2O_3 could promote the decomposition of ferric sulfate and calcium sulfate at the same time.The addition of Fe_2O_3 promoted the removal of organic sulfur.

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Effect of Fe2O3 on transformation and migration of sulfur in Xiaolongtan lignite during pyrolysis

DOI：10.19666/j.rlfd.201809162

摘要

Abstract

关键词

Keywords

references

Effect of Fe₂O₃ on transformation and migration of sulfur in Xiaolongtan lignite during pyrolysis