Syngas, tar and char behavior in chemical looping gasification of sawdust pellet in fluidized bed
Syngas, tar and char behavior in chemical looping gasification of sawdust pellet in fluidized bed
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流化床锯末颗粒化学链气化中合成气、焦油和焦炭的行为
DOI：
10.1016/j.fuel.2020.117464
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发表时间：
2020-06
期刊：
影响因子：
7.4
通讯作者：
Joachim Werther
中科院分区：
文献类型：
--
作者：
Shen Wang;Tao Song;Shangyi Yin;Ernst-Ulrich Hartge;Timo Dymala;Laihong Shen;Stefan Heinrich;Joachim Werther
由于高能量密度和方便运输的优点，近年来，使用颗粒状生物质作为燃料用于供电已经引起了人们的兴趣。化学链气化（CLG）集成了气化和热气体调节的过程，目的是获得低焦油量的合成气。以高挥发分、低灰分的木屑颗粒为燃料，天然锰铁矿为载氧体，在鼓泡流化床中进行了CLG的实验研究。在不添加外部蒸汽的情况下，考察了不同温度（750-950 ℃）和载氧体与生物质比例（0.2-1.2）下收集的合成气、焦油和半焦的气化性能。在不同的操作参数下，确定了CLG过程中的三相产物分布。随着反应温度的升高，气体产量增加，而液相和固相量减少。同时，它对合成气中主要气体（CO、CO2、H2和CH 4）的分布也有重要影响。气相色谱-质谱联用（GC-MS）分析表明，多环芳烃（PAHs）裂解为单环芳烃（MAH）并进一步分解为合成气。Mn/Fe基载氧体对多环芳烃的催化裂解也有一定的促进作用。对于残炭而言，温度越高，残炭越容易形成多孔结构和脆性结构。
Due to the advantages of high energy density and convenient transportation, the use of pelletized biomass as fuel for power supply has gained interest over recent years. Chemical looping gasification (CLG) integrates the process of gasification and hot gas conditioning, with the objective to obtain syngas with a low tar amount. The work presents some experimental results using sawdust pellet with high-volatile and low-ash content as fuel, and a natural manganese-iron ore as oxygen carrier for CLG in a bubbling fluidized bed. Without the addition of external steam, the syngas, tar, and char collected at different temperatures (750–950 ℃) and oxygen carrier to biomass ratios (0.2–1.2) were investigated to determine the gasification performance of sawdust pellet. Three-phase product distributions during CLG process were identified under different operating parameters. The increase of reaction temperature enhances the gas production, with decreasing amount of liquid and solid. Also, it has significant influence on the main gases (CO, CO2, H2and CH4) distributions in the syngas. Meanwhile, more Polycyclic-Aromatic Hydrocarbons (PAHs) are cracked to Mono-Aromatic Hydrocarbons (MAHs) and further decomposition into syngas, which is confirmed by further Gas Chromatography-Mass Spectrometer (GC–MS) analyses. The Mn/Fe-based oxygen carrier also exhibits a beneficial effect on catalytic cracking of PAHs into MAHs. As for the remaining char, a higher temperature is more sensitive to produce the char with more porous structure and brittle texture.
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影响因子：
11.2
作者：
A. Abad;R. Pérez-Vega;L. F. D. Diego;P. Gayán;M. Izquierdo;F. García-Labiano;J. Adánez
通讯作者：
A. Abad;R. Pérez-Vega;L. F. D. Diego;P. Gayán;M. Izquierdo;F. García-Labiano;J. Adánez
影响因子：
7.4
作者：
A. Rubel;Kunlei Liu;J. Neathery;D. Taulbee
通讯作者：
A. Rubel;Kunlei Liu;J. Neathery;D. Taulbee
木屑原位和异位催化热解产气的比较
影响因子：
6
作者：
Huo, Xiaodong;Xiao, Jun;Zhu, Li
通讯作者：
Zhu, Li
影响因子：
7.4
作者：
Antón Pérez-Astray;I. Adánez-Rubio;T. Mendiara;M. Izquierdo;A. Abad;P. Gayán;L. F. D. Diego;F. García-Labiano;J. Adánez
通讯作者：
Antón Pérez-Astray;I. Adánez-Rubio;T. Mendiara;M. Izquierdo;A. Abad;P. Gayán;L. F. D. Diego;F. García-Labiano;J. Adánez
影响因子：
7.3
作者：
Einaga, H;Futamura, S
通讯作者：
Futamura, S