黑液与石油焦共热解及其产物特性研究

王贵金; 郭大亮; 袁洪友; 周肇秋; 阴秀丽; 吴创之

黑液与石油焦共热解及其产物特性研究

1.
中国科学院广州能源研究所中国科学院可再生能源重点实验室, 广东广州 510640;
2.
中国科学院大学, 北京 100049

基金项目: 国家自然科学基金（51176195）；国家科技支撑计划（2012BAA09B03）。

详细信息

通讯作者:
阴秀丽，博士，研究员，E-mail：xlyin@ms.giec.ac.cn。

中图分类号: TK6
计量
- 文章访问数: 764
- HTML全文浏览量: 11
- PDF下载量: 571
- 被引次数: 0
出版历程
- 收稿日期: 2013-09-17
- 修回日期: 2014-01-02
- 刊出日期: 2014-05-30

Co-pyrolysis behaviors and products characteristics of black liquor and petroleum coke

1.
CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 运用热重-红外联用（TGA-FTIR）和扫描电镜（SEM）对黑液与石油焦的共热解过程进行了实验研究，考察了两者在共热解过程中的热失重、挥发性组分释放及固体产物表面形貌特性；同时运用热重（TGA）探究了热解固体产物黑液半焦和石油焦的CO₂共气化反应特性。结果表明，在黑液与石油焦共热解过程中，温度低于600 ℃时，两者的热解相互独立；温度达到600 ℃之后，相对于黑液和石油焦单独热解的加权平均值，挥发性气体产物CO₂和CO的释放峰值温度向低温区移动，失重特性也随之发生变化；800 ℃下的共热解固体产物表面产生新的形态特征，黑液的烧结得到抑制；850 ℃下的黑液半焦与石油焦CO₂共气化实验表明，两者在共气化过程中存在协同效应，各自的碳转化率和气化速率明显提高，整体碳转化率提高了51.27%，气化反应速率最大值增大了两倍。
- 黑液 /
- 石油焦 /
- 共热解 /
- TGA /
- SEM
Abstract: The weight loss characteristics, evolution patterns of volatiles and morphology of solid product from co-pyrolysis of black liquor and petroleum coke were studied by a thermo gravimetric analyzer coupled with Fourier Transform Infrared Spectrometry (TGA-FTIR) and scanning electronic microscopy (SEM). The CO₂ co-gasification characteristics of black liquor char and petroleum coke were also investigated by thermo gravimetric analyzer (TGA). The results suggested that the pyrolysis reactions had proceeded independently during co-pyrolysis process at temperatures below 600 ℃. However, as the temperature exceeded 600 ℃, the release peak temperature of CO₂ and CO were shifted to low temperature zone, and the thermo gravimetric characteristics were changed in contrast with the separate pyrolysis. Moreover,the surface morphology of the solid products from co-pyrolysis had been changed dramatically at 800 ℃. Specifically, the sintering during pyrolysis of black liquor was inhibited by the presence of petroleum coke. Compared to the individual gasification, the carbon conversion and gasification rate had been greatly improved for CO₂ co-gasification due to the synergistic effect of the blends at 850 ℃. The overall carbon conversion were increased by 51.27%, meanwhile, the maximum gasification rate were improved by twice during CO₂ co-gasification process.
- black liquor /
- petroleum coke /
- co-pyrolysis /
- TGA /
- SEM

HTML全文

参考文献(16)

SRICHAROENCHAIKUL V, FREDERICK W J, AGRAWAL P. Carbon distribution in char residue from gasification of kraft black liquor[J]. Biomass Bioenergy, 2003, 25(2): 209-220.

NAQVI M, YAN J, DAHLQUIST E. Black liquor gasification integrated in pulp and paper mills: A critical review[J]. Bioresour Technol, 2010, 101(21): 8001-8015.

NAQVI M, YAN J, FRÖLING M. Bio-refinery system of DME or CH₄ production from black liquor gasification in pulp mills[J]. Bioresour Technol, 2010, 101(3): 937-944.

WHITTY K, BACKMAN R, HUPA M. Influence of pressure on pyrolysis of black liquor: 1. Swelling[J]. Bioresour Technol, 2008, 99(3): 663-670.

WHITTY K, KULLBERG M, SORVARI V, BACKMAN R, HUPA M. Influence of pressure on pyrolysis of black liquor: 2. Char yields and component release[J]. Bioresour Technol, 2008, 99(3): 671-679.

GEA G, MURILLO M, ARAUZO J, FREDERICK W J. Swelling behavior of black liquor from soda pulping of wheat straw[J]. Energy Fuels, 2003, 17(1): 46-53.

CONNOLLY TS. CO₂ pyrolysis and gasification of kraft black liquor char[D]. Canada: The University of Maine, 2006.

GEA G, MURILLO M, ARAUZO J. Thermal degradation of alkaline black liquor from straw. Thermogravimetric study[J]. Ind Eng Chem Res, 2002, 41(19): 4714-4721.

邹建辉, 周志杰, 代正华, 刘海峰, 王辅臣, 于遵宏. 三种工业废料对石油焦CO₂气化动力学的影响[J]. 燃料化学学报, 2008, 36(3): 279-285. (ZOU Jian-hui, ZHOU Zhi-jie, DAI Zheng-hua, LIU Hai-feng, WANG Fu-chen, YU Zun-hong. Effects of three industrial wastes on kinetic characteristics of petroleum coke-CO₂gasification[J]. Journal of Fuel Chemistry and Technology, 2008, 36(3): 279-285.)

周志杰, 熊杰, 展秀丽, 于广锁. 造纸黑液对石油焦CO₂气化的催化作用及动力学补偿效应[J]. 化工学报, 2011, 62(9): 934-939. (ZHOU Zhi-jie, XIONG Jie, ZHAN Xiu-li, YU Guang-suo. Catalysis of black liquor for petroleum coke-CO₂ gasification and kinetic compensation effect[J]. Journal of Chemical Industry and Engineering(China), 2011, 62(9): 934-939.)

ZHAN X L, ZHOU Z J, WANG F C. Catalytic effect of black liquor on the gasification reactivity of petroleum coke[J]. Appl Energy, 2010, 87(5): 1710-1715.

MEESRI C, MOGHTADERI B. Lack of synergetic effects in the pyrolytic characteristics of woody biomass/coal blends under low and high heating rate regimes[J]. Biomass Bioenergy, 2002, 23(1): 55-66.

MOGHTADERI B, MEESRI C, WALL T F. Pyrolytic characteristics of blended coal and woody biomass[J]. Fuel, 2004, 83(6): 745-750.

JIANG X G, LI C Y, WANG T, LIU B C, CHI Y, YAN J H. TG-FTIR study of pyrolysis products evolving from dyestuff production waste[J]. J Anal Appl Pyrolysis, 2009, 84(1): 103-107.

杨海平, 陈汉平, 晏蓉, 张世红, 郑楚光. 油棕废弃物热解的TG-FTIR分析[J]. 燃料化学学报, 2006, 34(3): 309-314. (YANG Hai-ping, CHEN Han-ping, YAN Rong, ZHANG Shi-hong, ZHENG Chu-guang. TG-FTIR analysis of palm oil wastes pyrolysis[J]. Journal of Fuel Chemistry and Technology, 2006, 34(3): 309-314.)

BASSILAKIS R, CARANGELO R, WÖJTOWICZ M. TG-FTIR analysis of biomass pyrolysis[J]. Fuel, 2001, 80(12): 1765-1786.

施引文献

资源附件(0)

访问统计