松木成型燃料水蒸气气化反应特性

doi:10.11949/j.issn.0438-1157.20161188

化工学报 ›› 2017, Vol. 68 ›› Issue (3): 1191-1198.DOI: 10.11949/j.issn.0438-1157.20161188

松木成型燃料水蒸气气化反应特性

牛永红^1,2, 韩枫涛², 李义科³, 张雪峰⁴

1 内蒙古科技大学矿业研究院, 内蒙古包头 014010;
2 内蒙古科技大学能源与环境学院, 内蒙古包头 014010;
3 内蒙古科技大学研究生院, 内蒙古包头 014010;
4 内蒙古科技大学工业技术研究院, 内蒙古包头 014010

收稿日期:2016-08-24 修回日期:2016-11-02 出版日期:2017-03-05 发布日期:2017-03-05
通讯作者: 牛永红,niuyonghong@imust.cn
基金资助:
内蒙古科技创新引导基金项目（01850401）；内蒙古自然科学基金项目（2015MS0106）；内蒙古科技大学大学生科技创新项目（2015138）；内蒙古科技大学研究生教育教学改革研究与实践项目（YJSJGX2015005）。

Steam gasification characteristic of pine briquette fuel

NIU Yonghong^1,2, HAN Fengtao², LI Yike³, ZHANG Xuefeng⁴

1 Mining Research Institute, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China;
2 School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China;
3 Graduate School, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China;
4 Industrial Technology Research Institute, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China

Received:2016-08-24 Revised:2016-11-02 Online:2017-03-05 Published:2017-03-05
Contact: 10.11949/j.issn.0438-1157.20161188
Supported by:
supported by the IMST Innovation Guide Project (01850401),Inner Mongolia Natural Science Foundation (2015MS0106),Student Science and Technology Innovation Foundation of IMUST (2015138) and Graduate Students Teaching Reform Research and Practice Project of IMUST (YJSJGX2015005).

摘要/Abstract

摘要：

采用自制蒸气气化炉试验系统，以废弃松木屑为原料制作成型颗粒燃料，采用高温水蒸气气化，考察不同气化温度及气料比（S/B）对生物质水蒸气气化反应的影响，利用XRD射线衍射和傅里叶红外图谱分别分析生物质反应残留物及气化焦油，反应残留物的比表面积及空隙特性由BET多点法和BJH法测得。结果表明，蒸汽流量和反应温度有利于促进蒸汽重整、碳还原、CO的变换反应，当S/B由0.5增加到1.5时，温度为900℃，H₂体积分数由52.32%增长到67.3%；随温度升高（750~950℃，S/B=1），松木颗粒的失重率由82.91%升高到91.27%，其微孔结构充分发展，平均孔直径由20.96 nm降低到3.76 nm，焦油中脂肪烃含量增加，芳香烃因发生开环反应使其含量降低，有益于降低气化气中焦油含量。

关键词: 废物处理, 生物燃料, 水蒸气, 气化, 固相残留物, 焦油

Abstract:

The effects of different gasification temperature and gas-solid ratio (S/B) on steam gasification reaction of waste pine sawdust were investigated in the self-made steam gasifier by using high-temperature steam gasification technology. Fourier transform infrared spectroscopy (FT-IR) and XRD ray diffraction were employed to analyze the reaction residue and the gasification tar, respectively. The specific surface area and pore characteristics of the reaction residue were separately measured by BET multi-point method and BJH method. The results showed that the increase of steam flow promoted the reactions of steam reforming, carbon reduction, and carbon monoxide conversion. When the ratio of S/B increased from 0.5 to 1.5, the volume fraction of H₂ increased from 52.32% to 67.3% at 900℃,the volume fraction of CO decreased with increasing temperature, and then slightly increased, while the change rule of CO₂ was opposite to CO. The volume fraction of hydrocarbon gases (CH₄ and C_nH_m (n≥2)) of small molecule decreased gradually. In the temperature range of 750-950℃, the gasification reaction increased with increasing temperature. When S/B was 1, the volume fraction of H₂ increased from 31.91% at 750℃ to 62.89% at 900℃, increasing by nearly one time. With the increase of temperature, the weight loss rate of pine briquette fuel increased from 82.91% to 91.27%, the pore structure of the residual solid phase was fully developed, and the average pore diameter decreased from 20.96 nm to 3.76 nm. The content of aliphatic hydrocarbons in gasification tar also increased with increasing temperature, while the content of aromatic hydrocarbon decreased due to the ring opening reaction, which was beneficial to reduce the tar content in the gasification gas.

Key words: waste treatment, biofuel, steam, gasification, solid residues, tar

中图分类号:

牛永红, 韩枫涛, 李义科, 张雪峰. 松木成型燃料水蒸气气化反应特性[J]. 化工学报, 2017, 68(3): 1191-1198.

NIU Yonghong, HAN Fengtao, LI Yike, ZHANG Xuefeng. Steam gasification characteristic of pine briquette fuel[J]. CIESC Journal, 2017, 68(3): 1191-1198.

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松木成型燃料水蒸气气化反应特性

Steam gasification characteristic of pine briquette fuel

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