郭大亮,王林芳,郭惠萍,陈梦薇,薛国新,武书彬.结合态与无机态钠对木质素半焦气化特性的影响[J].农业机械学报,2017,48(3):332-337.
GUO Daliang,WANG Linfang,GUO Huiping,CHEN Mengwei,XUE Guoxin,WU Shubin.Influence of Inorganic and Organic Bound Na on Char Gasification Characteristics of Lignin[J].Transactions of the Chinese Society for Agricultural Machinery,2017,48(3):332-337.
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结合态与无机态钠对木质素半焦气化特性的影响   [下载全文]
Influence of Inorganic and Organic Bound Na on Char Gasification Characteristics of Lignin   [Download Pdf][in English]
投稿时间:2016-03-12  
DOI:10.6041/j.issn.1000-1298.2017.03.042
中文关键词:  碱木质素  半焦  气化  结合态钠  无机态钠
基金项目:国家自然科学基金项目(31500492)、浙江省自然科学基金项目(LY16C160005)、浙江理工大学科研启动基金项目(14012079-Y)、化学工程与技术浙江省高校重中之重学科优秀青年人才培养基金项目(ZYG2015012)、纺织科学与工程浙江省高校重中之重学科优秀青年人才培养基金项目(2013YBZX06、ZYG2015012)
作者单位
郭大亮 浙江理工大学 
王林芳 浙江理工大学 
郭惠萍 中国海诚工程科技股份有限公司 
陈梦薇 浙江理工大学 
薛国新 浙江理工大学 
武书彬 华南理工大学 
中文摘要:采用高温水平管式炉热解制取含有机结合态钠和无机态钠的木质素半焦,利用扫描电镜/能谱分析仪(SEM/EDS)和热重分析仪(TG)对半焦的形貌、元素分布及气化特性进行研究,借助热重红外联用技术(TG-FTIR)考察2种状态钠对木质素半焦气化反应性影响机理。结果表明,随着制焦温度由400℃增加到800℃,结合态钠木质素半焦表面出现大量鼓泡,半焦表面钠元素相对含量由5.36%增加到15.72%,半焦的CO2和水蒸气气化碳转化率分别增加30%和20%;无机态钠催化木质素实验结果与结合态钠木质素相反。反应温度低于600℃时,结合态钠与木质素半焦反应主要为—CO2Na与半焦反应;反应温度600~800℃范围内,主要为—CO2Na和—CONa与半焦反应;当温度高于800℃时,主要为—CONa与半焦反应。
GUO Daliang  WANG Linfang  GUO Huiping  CHEN Mengwei  XUE Guoxin  WU Shubin
Zhejiang Sci-Tech University,Zhejiang Sci-Tech University,China Haisum Engineering Co., Ltd.,Zhejiang Sci-Tech University,Zhejiang Sci-Tech University and South China University of Technology
Key Words:alkali lignin  char  gasification  organic bound Na  inorganic Na
Abstract:The sodium salts in black liquor exists in two main forms: as phenolic sodium (—CONa) and carboxylate sodium (—COONa) groups (PCSG) forming a part of alkali lignin or as dissolved salt (NaOH and Na2CO3). The purpose of this study is to investigate the effect of inorganic and organic bound sodium on the char characteristics of alkali lignin, char samples were prepared by a high temperature furnace as pyrolysis temperature at 400℃, 600℃ and 800℃, respectively. The char morphology, elemental distribution, gasification reactivity and catalytic mechanism were studied by scanning electron microscopy/energy spectrum analyzer (SEM/EDS), thermal gravimetric analysis (TG) and thermogravimetric analyzer coupled with Fourier transform infrared spectrometry (TGA-FTIR). The results suggested that for organic bound sodium lignin, a large number of bubbling occurred at the char surface and the sodium content of char surface was increased from 5.36% to 15.72% as the pyrolysis temperature was increased from 400℃ to 800℃. Meanwhile, the carbon conversions of CO2 and steam gasification were increased by 30% and 20%, respectively. The effect of organic bound sodium on the reaction characteristic was varied with temperature. When the reaction temperature was lower than 600℃, the reaction mainly occurred between —CO2Na and char. As the temperature was in the range of 600~800℃, both —CO2Na and —CONa can react with char. As the temperature was higher than 800℃, the reaction mainly occurred between —CONa and char.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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