棕榈壳热解失重特性及动力学研究
Kinetic Analysis of Palm Kernel Shell during Pyrolysis Reaction
查看参考文献33篇
|
文摘
|
采用热重-红外联用(TG-FTIR) 、裂解-气相色谱/质谱联用(Py-GC/MS)技术和小型固定床装置,考察了棕榈壳的热解失重过程和产物特性,并进一步评价了热解半焦的气化反应性。结果表明:棕榈壳热解失重过程大致分为干燥(25 ~ 236 ℃,3.42%) 、主失重(236 ~ 400 ℃, 52.31%)和炭化(400 ~ 850 ℃,14.90%) 3个阶段,1.5级或2级反应可以较好描述棕榈壳热解反应的主失重过程;升温速率10 ~ 30 K/min下,反应表观活化能为67.63 ~ 76.47 kJ /mol;热解过程主要气体产物的释放量顺序分别为CO_2、H_2O、 CH_4和CO; 600 ~ 850 ℃下,棕榈壳主要热解产物为液相产物,其质量产率36.8% ~ 50.9%,能量产率41.3% ~ 58.9%,主要组分包括苯酚、乙酸、十八烷酸、十六烷酸、4-烯丙基-2,6-二甲氧基苯酚等物质,其中苯酚GC含量较高(12.56% ~ 15.49%),这可能主要与原料木质素的含量较高有关;固相产物的质量和能量产率分别为20.6% ~ 26.7%和27.4% ~ 35.0%,其CO_2气化反应性相对低于稻秆、木粉等常见生物质。 |
|
其他语种文摘
|
The pyrolysis characteristics,mechanism,and products properties of palm kernel shell (PKS) in a bench-scaled fixed bed reactor were investigated by using thermogravimetry-Fourier transform infrared spectroscopy (TG-FTIR),pyrolysis-gas chromatography and mass spectrometry (Py-GC/MS). TG results showed that the pyrolysis of PKS could be devided into three steps,which included drying(25 - 236 ℃,3.42%),main weight loss(236 - 400 ℃,52.31%),and carbonization (400 - 850 ℃,14.90%) stage. The main mass loss stage of PKS pyrolysis was controlled by 1.5 or 2 order reaction model,and the apparent activation energies at heating rates of 10 - 30 K/min were 67.63 - 76.47 kJ /mol. The gaseous products were evolved with the sequence of CO_2,H_2O,CH_4,and CO. The quantitative results showed that liquid was the primary pyrolysis product at 600 - 850 ℃,with the mass yield of 36.8% - 50.9% and energy yield of 41.3% - 58.9% according to original material. Py- GC/MS results indicated that the main components of liquid products were phenol,acetic acid,octadecanoic acid,nhexadecanoic acid,4-allyl-2,6 -dimethoxyphenol,etc.. It was notable that phneols had a higher relative content,accounting for about 12.56% - 15.49%. Biochar was an important by-product of PKS pyrolysis,with the mass and energy yield of 20.6% - 26.7% and 27.4% - 35.0%,respectively. The CO_2 gasification reactivity of PKS char was lower than that of rice straw char and wood char. |
|
来源
|
林产化学与工业
,2016,36(4):31-40 【核心库】
|
|
DOI
|
10.3969/j.issn.0253-2417.2016.04.005
|
|
关键词
|
棕榈壳
;
热解
;
产物特性
;
CO_2气化反应性
;
动力学
|
|
地址
|
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
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0253-2417 |
|
学科
|
能源与动力工程;化学工业 |
|
基金
|
国家自然科学基金资助项目
;
广东省战略新兴产业项目
|
|
文献收藏号
|
CSCD:5772711
|
参考文献 共
33
共2页
|
|
1.
吴创之. 生物质气化技术发展分析.
燃料化学学报,2013,41(7):798-804
|
CSCD被引
25
次
|
|
|
|
|
2.
吴创之. 生物质气化发电项目经济性分析.
太阳能学报,2009,30(3):368-373
|
CSCD被引
13
次
|
|
|
|
|
3.
Yang Haiping. Pyrolysis of palm oil wastes for enhanced production of hydrogen rich gases.
Fuel Processing Technology,2006,87(10):935-942
|
CSCD被引
11
次
|
|
|
|
|
4.
Chaivatamaset P. Bed agglomeration characteristics of palm shell and corncob combustion in fluidized bed.
Applied Thermal Engineering,2011,31(14):2916-2927
|
CSCD被引
2
次
|
|
|
|
|
5.
Saikaew T. Emission of NOX and N_2O from co-combustion of coal and biomasses in CFB combustor.
International Journal of Greenhouse Gas Control,2012,10:1026-1032
|
CSCD被引
6
次
|
|
|
|
|
6.
Rahman M M. Preparation and modification of activated carbon from oil-palm shell and its adsorption capacity through speciation of chromium.
Research Journal of Chemistry and Environment,2011,15(4):49-51
|
CSCD被引
2
次
|
|
|
|
|
7.
Abnisa F. Characterization of bio-oil and bio-char from pyrolysis of palm oil wastes.
Bioenergy Research,2013,6(2):830-840
|
CSCD被引
9
次
|
|
|
|
|
8.
Sabil K M. Effects of torrefaction on the physiochemical properties of oil palm empty fruit bunches,mesocarp fiber and kernel shell.
Biomass and Bioenergy,2013,56:351-360
|
CSCD被引
5
次
|
|
|
|
|
9.
赵士明. 绿液预处理麦秆纤维素酶水解的研究.
林产化学与工业,2012,32(5):69-76
|
CSCD被引
1
次
|
|
|
|
|
10.
Silva-Femandes T. Biorefining strategy for maximal monosaccharide recovery from three different feedstocks: Eucalyptus residues,wheat straw and olive tree pruning.
Bioresource Technology,2015,183:203-212
|
CSCD被引
1
次
|
|
|
|
|
11.
吕当振. 纤维素、木质素含量对生物质热解气化特性影响的实验研究.
工程热物理学报,2008,29(10):1771-1774
|
CSCD被引
10
次
|
|
|
|
|
12.
Bai Yonghui. Synergistic effect between CO_2 and H_2O on reactivity during coal chars gasification.
Fuel,2014,126:1-7
|
CSCD被引
9
次
|
|
|
|
|
13.
李小民. 麦秆热解机理研究.
中国科学技术大学学报,2012,42(4):318-324
|
CSCD被引
4
次
|
|
|
|
|
14.
王伟. TG-FTIR联用下生物质废弃物的热解特性研究.
农业环境科学学报,2008,27(1):380-384
|
CSCD被引
9
次
|
|
|
|
|
15.
黄艳琴.
生物质两段式气化基础及试验研究. 博士学位论文,2009
|
CSCD被引
1
次
|
|
|
|
|
16.
Lee Y. Comparison of biochar properties from biomass residues produced by slow pyrolysis at 500 °C.
Bioresource Technology,2013,148:196-201
|
CSCD被引
17
次
|
|
|
|
|
17.
Zhu H M. Study on pyrolysis of typical medical waste materials by using TG-FTIR analysis.
Journal of Hazardous Materials,2008,153(1/2):670-676
|
CSCD被引
24
次
|
|
|
|
|
18.
Han Long. TG-FTIR study on pyrolysis of wheat-straw with abundant CaO additives.
Spectroscopy and Spectral Analysis,2011,31(4):942-946
|
CSCD被引
1
次
|
|
|
|
|
19.
Gao Ningbo. TG-FTIR and Py-GC/MS analysis on pyrolysis and combustion of pine sawdust.
Journal of Analytical and Applied Pyrolysis,2013,100:26-32
|
CSCD被引
17
次
|
|
|
|
|
20.
Richter H. Formation of polycyclic aromatic hydrocarbons and their growth to soot: A review of chemical reaction pathways.
Progress in Energy and Combustion Science,2000,26(4/5/6):565-608
|
CSCD被引
77
次
|
|
|
|
|
了解气象卫星更多信息，请访问