Effect of sodium carboxylate on pyrolysis of Zhundong coal (H-form coal)

LIU Hui; ZHAO Deng; JIANG Leixiao; XU Lianfei; YAN Yonghong; WU Dongyang; GAO Jihui; WU Shaohua

doi:10.11949/j.issn.0438-1157.20160847

您当前的位置：

首页 >

文章列表页 >

Effect of sodium carboxylate on pyrolysis of Zhundong coal (H-form coal)

更新时间：2025-12-10

- Effect of sodium carboxylate on pyrolysis of Zhundong coal (H-form coal)
- CIESC Journal Issue 11, Pages: 4795-4801(2016)
- 作者机构：
  
  哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20160847
  CLC： Q523.3
- Online First：05 November 2016，
  
  Published：05 November 2016
- 稿件说明：
移动端阅览
LIU Hui, ZHAO Deng, JIANG Leixiao, et al. Effect of sodium carboxylate on pyrolysis of Zhundong coal (H-form coal)[J]. CIESC Journal, 2016, (11): 4795-4801.
DOI：

LIU Hui, ZHAO Deng, JIANG Leixiao, et al. Effect of sodium carboxylate on pyrolysis of Zhundong coal (H-form coal)[J]. CIESC Journal, 2016, (11): 4795-4801. DOI： 10.11949/j.issn.0438-1157.20160847.

摘要

将酸洗后的准东煤（H-form coal）进行离子交换得到含羧酸钠的离子交换煤（Na-form coal），再次酸洗脱钠得到的二次酸洗煤（H-form-1 coal）作为对照试样，在固定床反应器上进行热解。借助便携式气体分析仪、热重分析仪和红外光谱仪研究总挥发分和焦油产率、热解气体组分、焦炭反应活性以及焦炭官能团的变化。研究表明：温度高于600℃时，羧酸钠会减小挥发分产率，抑制CH4、C2H4、C2H6气体的产生，高于800℃时促进了CO的生成；羧酸钠抑制了焦油的生成且在700℃时抑制作用最为明显；羧酸钠显著提高了焦炭的反应活性，700℃时效果更为明显。羧酸钠的存在对热解过程中煤焦官能团有显著影响。

Abstract

A Na+-exchanged coal (Na-form coal) containing sodium carboxylate

was prepared by ion exchange of an acid-washed Zhunong coal (H-form coal). A H-form-1 coal

prepared from the acid-washing of Na-form coal

was set as a blank. Pyrolysis of the two samples was performed in a fixed-bed reactor. The portable infrared gas analyzer

FTIR and thermogravimetric analyzer were employed to investigate the composition and yields of volatiles

the decomposed components

the variation of functional groups and the char reactivity. It shows that

in presence of sodium carboxylate the production rates of volatiles and release of CH4

C2H4 and C2H6 were inhibited when temperature was above 600℃

while the production of CO was promoted at temperature above 800℃. Besides

the tar yield is remarkably inhibited at 700℃. The char reactivity was significantly improved due to sodium carboxylate especially at 700℃. The presence of sodium carboxylate in coal greatly affects the variation of functional groups during the pyrolysis.

关键词

Keywords

references

Views

163

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of pyrolysis temperature and atmosphere on rapid coal pyrolysis in transport bed reactor

Thermo-oxidative degradation characteristics of TPT backsheet from end-of-life photovoltaic modules

Preparation of biobased polyurethane adhesives for flexible packaging and their water-resistance and thermal stability assessment

Revealing mechanisms of tar formation and char structural evolution during lignin pyrolysis from microscopic perspective

Progress of molten salt-assisted thermochemical high-value conversion of biomass

Related Author

CHEN Zhaohui

DUN Qimeng

SHI Yong

GAO Shiqiu

WANG Shangming

LI Xiaofeng

FANG Qiuyu

WANG Qiang

Related Institution

State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences

School of Chemical Engineering, Hebei University of Technology

State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University

School of Chemical Engineering and Light Industry, Guangdong University of Technology

Zhongshan Kingho Chemical Co., Ltd.

⁰