棕榈壳焦CO<sub>2</sub>气化过程中反应性及结构特性研究

常国璋; 黄艳琴; 赖喜锐; 阴秀丽; 吴创之

棕榈壳焦CO₂气化过程中反应性及结构特性研究

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(51176194);广东省战略新兴产业项目(2012A032300019)。

详细信息

通讯作者:
黄艳琴,女,博士,副研究员,主要从事生物质热化学转化研究,E-mail:huangyq@ms.giec.ac.cn。

中图分类号: TK6
计量
- 文章访问数: 374
- HTML全文浏览量: 20
- PDF下载量: 429
- 被引次数: 0
出版历程
- 收稿日期: 2015-01-19
- 修回日期: 2015-04-18
- 刊出日期: 2015-08-30

Experimental study on the structure and reactivity of palm kernel shell chars duing CO₂ gasification

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

摘要

摘要: 850℃下,利用管式炉制备了不同转化率的棕榈壳CO₂气化焦,通过热重分析仪研究了气化焦的CO₂气化反应性,采用比表面积分析、拉曼光谱、X射线荧光光谱和扫描电镜-能谱等分析手段,考察了气化焦孔隙结构、碳组成、矿物元素含量与分布随转化率的变化。结果表明,在CO₂气化过程中,随着转化率的提高,棕榈壳气化焦固定碳的含量逐渐降低,有序化碳的相对含量为0.30~0.33,对气化过程起到一定的抑制作用;灰分含量逐渐增加,但气化反应指数R_s呈现先降低后升高的过程。转化率小于23%时,R_s与气化焦比表面积的变化趋势一致;23%< 转化率< 31%时,R_s基本不变;31%< 转化率< 68%时,比表面积随转化率线性增加,R_s取决于孔隙比表面积、矿物元素催化2个因素的协同作用,当转化率> 56 %时,该催化作用变得明显,同时碳的有序化程度开始降低;转化率> 68%时,R_s主要受矿物元素的催化作用控制。
- 棕榈壳 /
- 气化焦 /
- CO₂气化 /
- 反应活性
Abstract: The palm kernel shell(PKS) chars of different conversions were prepared in a tube furnace by using CO₂ as gasification agent, and the gasification reactivity of PKS chars were tested by thermogravimetry analyzer. The pore structure, degree of carbon structure ordering, mineral element content and distribution of PKS chars of different conversions were characterized by surface area measurement, Raman spectra, X-ray flourimeter(XRF), scanning electron microscopy and energy dispersive X-ray spectroscopy(SEM-EDX), respectively. The results show that the fixed carbon content of PKS chars reduces gradually, and the proportion of ordered carbon stabilizes at 0.30~0.33 during CO₂ gasification. The ash content increases gradually along with the increasing of conversion, but the gasification reaction index R_s of PKS chars increases after a decreased stage. At the early stage of pore size expansion (conversion x< 23%), the change tendency of R_s of PKS chars is in accordance with the surface area. As the gasification reaction continues (23%< x< 31%), R_s has few changes. The surface area of PKS chars has a linear correlation with the conversion from 31% to 68%, and R_s increases with the increasing surface area and the catalysis of mineral elements as x> 56%. When x> 68%, the R_s of PKS chars is mainly controlled by catalysis of minerals.
- palm kernel shell /
- partially gasified chars /
- CO₂gasification /
- reactivity

HTML全文

参考文献(20)

MOHAMMED M A A, SALMIATON A, WAN ZALINA W A K G, MOHAMMED AMRAN M S, FAKHRU'L-RAZI A, TAUFIQ-YAP Y H. Hydrogen rich gas from oil palm biomass as a potential source of renewable energy in Malaysia[J]. Renew Sust Energy Rev, 2011, 15(2): 1258-1270.

YANG H P, YAN R, CHEN H P, LEE D H, LIANG D T, ZHENG C G. Mechanism of palm oil waste pyrolysis in a packed bed[J]. Energy Fuel, 2006, 20(3): 1321-1328.

CHAIVATAMASET P, SRICHAROON P, TIA S. Bed agglomeration characteristics of palm shell and corncob combustion in fluidized bed[J]. Appl Therm Eng, 2011, 31(14): 2916-2927.

SAIKAEW T, SUPUDOMMAK P, MEKASUT L, PIUMSOMBOON P, KUCHONTHARA P. Emission of NO_x and N₂O from co-combustion of coal and biomasses in CFB combustor[J]. Int J Greenh Gas Con, 2012, 10: 1026-32.

MOKHLESUR R M, ALIAS M Y. Preparation and modification of activated carbon from oil-palm shell and its adsorption capacity through speciation of chromium[J]. Res J Chem Environ, 2011, 15(4): 49-51.

俞元元, 肖军, 沈来宏, 杜玉照. 不同催化剂对生物质半焦低温气化效果的影响[J]. 农业工程学报, 2013, 29(3):190-197. (YU Yuan-yuan, XIAO Jun, SHEN Lai-hong, DU Yu-zhao. Effects of different catalysts on steam gasification of biomass char at low temperature[J]. Trans Chin Soc Agric Eng, 2013, 29(3): 190-197.)

LAHIJANI P, ZAINAL Z A, MOHAMED A R, MOHAMMADI M. Ash of palm empty fruit bunch as a natural catalyst for promoting the CO₂ gasification reactivity of biomass char[J]. Bioresource Technol, 2013, 132: 351-355.

杨海平, 陈汉平, 陈应泉, 王贤华, 张世红. 热解过程中棕榈壳焦的物化结构演变特性[J].中国电机工程学报, 2008, 28(32): 106-110. (YANG Hai-ping, CHEN Han-ping, CHEN Ying-quan, WANG Xian-hua, ZHANG Shi-hong. Investigation on the forming property of palm oil shell char physicochemical structure during biomass pyrolysis[J]. Proceed CSEE, 2008, 28(32): 106-110.)

肖瑞瑞, 陈雪莉, 王辅臣, 于广锁. 生物质半焦CO₂气化反应动力学研究[J]. 太阳能学报, 2012, 33(2): 236-242. (XIAO Rui-rui, CHEN Xue-li, WANG Fu-chen, YU Guang-suo. Research on kinetics characteristics of gasification biomass semi-char with CO₂[J]. Acta Energy Sin, 2012, 33(2): 236-242.)

张瑜, 邹志祥, 闵凡飞, 李寒旭, 董众兵. 生物质半焦CO₂气化反应活性的实验研究[J]. 煤炭学报, 2008, 33(5): 579-582. (ZHANG Yu, ZOU Zhi-xiang, MIN Fan-fei, LI Han-xu, DONG Zhong-bing. Experimental study of the reactivity of biomass char with CO₂by thermal analysis techniques[J]. J China Coal Soc, 2008, 33(5): 579-582.)

吴正舜, 吴创之, 马隆龙, 郑舜鹏, 戴先文. 1 MW木粉气化发电系统的运行特性分析[J]. 太阳能学报, 2003, 24(3): 390-393. (WU Zheng-shun, WU Chuang-zhi, MA Long-long, ZHENG Shun-peng, DAI Xian-wen. The performance and analysis of 1 MW electric energy generation system by biomass gasification[J]. Acta Energy Sin, 2003, 24(3): 390-393.)

黄艳琴. 生物质两段式气化基础及实验研究. 北京: 中国科学院大学, 2009. (HUANG Yan-qin. The Fundamental and experimental research on biomass two-stage gasification. Beijing: University of Chinese Acedemy of Sciences, 2009.)

LAHIJANI P, ZAINAL Z A, MOHAMED A R. Catalytic effect of iron species on CO₂ gasification reactivity of oil palm shell char[J]. Thermochim Acta, 2012, 546: 24-31.

BAI Y H, WANG Y L, ZHU S H, YAN L J, LI F, XIE K C. Synergistic effect between CO₂ and H₂O on reactivity during coal chars gasification[J]. Fuel, 2014, 126: 1-7.

CHIN G, KIMURA S, TONE S, OTAKE T. Gasification of coal char with steam:(part 2)Pore structure and reactivity[J]. Int Chem Eng, 1983, 23(1): 113-120.

向银花, 王洋, 张建民, 董众兵, 李斌. 煤焦气化过程中比表面积和孔容积变化规律及其影响因素研究[J]. 燃料化学学报, 2002, 30(2): 108-112. (XIANG Yin-hua, WANG Yang, ZHANG Jian-min, DONG Zhong-bing, LI Bin.Study on structural properties and their affecting factors during gasification of chars[J]. J Fuel Chem Technol, 2002, 30(2): 108-112.)

谢克昌, 赵明举, 凌大琦. 矿物质对煤焦表面性质和煤焦-CO₂气化反应的影响[J]. 燃料化学学报, 1990, 18(4): 316-323. (XIE Ke-chang, ZHAO Ming-ju, LING Da-qi. Effect of mineral matter on microstructural properties and CO₂-gasification of high-ash coal chars[J]. J Fuel Chem Technol, 1990, 18(4): 316-323.)

柳晓飞, 尤静林, 王媛媛, LU Li-ming, 解迎芳, 余立旺, 伏清. 澳大利亚烟煤热解的拉曼光谱研究[J]. 燃料化学学报, 2014, 42(3): 270-276. (LIU Xiao-fei, YOU Jing-lin, WANG Yuan-yuan, LU Li-ming, XIE Ying-fang, YU Li-wang, FU Qing. Raman spectroscopic study on the pyrolysis of Australian bituminous coal[J]. J Fuel Chem Technol, 2014, 42(3): 270-276.)

MARQUES M, SUAREZ-RUIZ I, FLORES D, GUEDES A, RODRIGUES S. Correlation between optical, chemical and micro-structural parameters of high-rank coals and graphite[J]. Int J Coal Geol, 2009, 77(3/4): 377-382.

TUINSTRA F, KOENIG J K. Raman spectrum of graphite[J]. J Chem Phys, 1970, 53(3): 1126-1130.

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 374
HTML全文浏览量: 20
PDF下载量: 429
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

棕榈壳焦CO₂气化过程中反应性及结构特性研究

通讯作者:
黄艳琴,女,博士,副研究员,主要从事生物质热化学转化研究,E-mail:huangyq@ms.giec.ac.cn。

计量

Experimental study on the structure and reactivity of palm kernel shell chars duing CO₂ gasification

计量

目录

2023年《燃料化学学报（中英文）》评优结果公布！

留言板

棕榈壳焦CO2气化过程中反应性及结构特性研究

通讯作者: 黄艳琴,女,博士,副研究员,主要从事生物质热化学转化研究,E-mail:huangyq@ms.giec.ac.cn。

计量

出版历程

Experimental study on the structure and reactivity of palm kernel shell chars duing CO2 gasification

计量

出版历程

目录

2023年《燃料化学学报（中英文）》评优结果公布！

棕榈壳焦CO₂气化过程中反应性及结构特性研究

通讯作者:
黄艳琴,女,博士,副研究员,主要从事生物质热化学转化研究,E-mail:huangyq@ms.giec.ac.cn。

Experimental study on the structure and reactivity of palm kernel shell chars duing CO₂ gasification