生物油蒸馏残渣理化性质及热失重研究

朱谢飞; 李凯; 马善为; 朱锡锋

生物油蒸馏残渣理化性质及热失重研究

中国科学技术大学安徽省生物质洁净能源重点实验室, 中国科学院城市污染物转化重点实验室, 安徽合肥 230026

基金项目:

国家重点基础研究发展规划 973 program

国家重点基础研究发展规划 2013CB228103

中国科学院重点部署项目 KGZD-EW-304-3

详细信息

通讯作者:
朱锡锋, Tel:0551-63600040, E-mail:xfzhu@ustc.edu.cn

中图分类号: TK6
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- 文章访问数: 140
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- PDF下载量: 10
- 被引次数: 0
出版历程
- 收稿日期: 2016-08-31
- 修回日期: 2016-10-09
- 网络出版日期: 2021-01-23
- 刊出日期: 2017-01-10

Physicochemical characteristics and TGA of distillation residues from bio-oil

University of Science and Technology of China, Anhui Province Key Laboratory of Biomass Clean Energy, CAS Key Laboratory of Urban Pollutant Conversion, Hefei 230026, China

Funds:

the Major State Basic Research Development Program of China 973 program

the Major State Basic Research Development Program of China 2013CB228103

the Key Research Program of the Chinese Academy of Sciences KGZD-EW-304-3

摘要

摘要: 利用傅里叶变换红外光谱仪、激光共焦显微拉曼光谱仪和TGA Q500热分析仪对生物油蒸馏残渣及其在不同温度处理后的热解焦炭理化性质进行表征，并对其热失重特性进行分析。结果表明，生物油蒸馏残渣主要是由脂肪族、芳香族和低聚糖类等有机化合物组成；在氮气氛围下热解主要分为三个阶段：30-145℃为小分子物质挥发析出阶段145-550℃为大分子物质裂解和氧化阶段，550-750℃为焦炭产生阶段；热处理过程中各类物质逐步有序热解析出，同时固体产物石墨化程度随着热处理终止温度的升高而升高。
- 生物油 /
- 蒸馏 /
- 热失重
Abstract: The distillation residues from bio-oil and the pyrolysis char obtained at different temperatures were investigated with FT-IR, Raman spectra and TGA. The results show that the distillation residues from bio-oil consist of aliphatic, aromatic and oligosaccharides. The process of thermal weight loss of distillation residues from bio-oil in nitrogen can be separated into three stages. The first is the volatilization of low-boiling point compounds from ambient temperature to 145℃. The second is the pyrolysis, oxidation and polymerization of the heavy compounds at higher temperature and the last is the formation and combustion of coke. The graphitic carbon fraction increases with increasing the carbonization temperature while the disordered carbon amount decreases.
- bio-oil /
- distillation /
- thermal weight loss

HTML全文

图 1 生物油蒸馏残渣红外光谱谱图

Figure 1 FT-IR spectrum of distillation residue from bio-oil

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图 2 N₂气氛(100 mL/min)下生物油蒸馏残渣的TG-DTG曲线(升温速率为10 ℃/min)

Figure 2 TG-DTG curve of distillation residue from bio-oil in N₂(100 mL/min) at 10 ℃/min heating rate

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图 3 不同温度处理下生物油蒸馏残渣红外光谱谱图

Figure 3 FT-IR spectra of distillation residues from bio-oil at different temperatures

a: BP700; b: BP400; c: BP300; d: BP200; e: BP100; f: BP025

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图 4 生物油蒸馏残渣红外光谱分峰拟合图(25 ℃)

Figure 4 FT-IR peak fitting spectra of distillation residues from bio-oil at 25 ℃

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图 5 400 ℃下生物油蒸馏残渣红外光谱分峰拟合图

Figure 5 FT-IR peak fitting spectra of distillation residues from bio-oil at 400 ℃

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图 6 生物油蒸馏残渣拉曼光谱谱图

Figure 6 Raman spectrum of distillation residue from bio-oil

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表 1 生物油蒸馏残渣的工业分析和元素分析

Table 1 Proximate and ultimate analyses of distillation residue from bio-oil

Sample	Proximate analysis w_ad /%				Ultimate analysis w_ad /%				Q_HHV /(MJ·kg^-1)
Sample	M	A	V	FC	C	H	O	N	Q_HHV /(MJ·kg^-1)
BP025	1.00	0.50	72.90	25.60	74.00	6.21	18.25	1.45	29.12

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表 2 生物油蒸馏残渣红外光谱定量分析

Table 2 Quantitative analysis on FT-IR spectra of distillation residues from bio-oil

Sample	Content w/%
Sample	C-O	CH₃/ CH₂	C=C	C-H	-OH
BP025	13.32	3.50	5.63	9.85	17.05
BP100	13.36	2.52	5.22	8.39	14.76
BP200	15.53	3.60	6.26	9.73	8.81
BP300	17.70	4.50	5.65	9.45	8.74
BP400	23.00	4.20	6.70	2.89	9.97

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