Chemical looping gasification characteristics and kinetic analysis of Chlorella and its organic components  

作　　者：Song Wu Bo Zhang Bolun Yang Jianxuan Shang Hongzhi Zhang Wei Guo Zhiqiang Wu 

机构地区：[1]Shaanxi Key Laboratory of Energy Chemical Process Intensification,School of Chemical Engineering and Technology,Xi’an Jiaotong University,Xi’an,Shaanxi 710049,PR China [2]Shaanxi Coal and Chemical Technology Institute Co.,Ltd.,Shaanxi,Xi’an,710065,PR China

出　　处：《Carbon Resources Conversion》2022年第3期211-221,共11页碳资源转化（英文）

基　　金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China(Grant Nos:22038011,51976168);the K.C.Wong Education Foundation,and the Natural Science Basic Research Program of Shaanxi(Program No.2021JLM-17).

摘　　要：Chemical looping gasification(CLG)characteristics and kinetic analysis of Chlorella(CHL),simulated Chlorella(V-CHL)and medium-chain triglycerides(MCT)were investigated using a thermogravimetric analyzer coupled with an online mass spectrometer.The apparent activation energy was obtained via Kissinger-Akahira-Sunose(KAS)method.In the result of the weightless behavior,the addition of oxygen carrier inhibited the decomposition of V-CHL at lower temperatures but promoted its decomposition at high temperatures.The values of chemical looping process characteristic parameters showed that a 10 wt%oxygen carrier would maximize the release of volatile products in the CLG of MCT,with 5.12×10^(-6)%⋅min^(-1)⋅℃^(-3).Oxygen carriers also affected gaseous products.The LHV of gaseous products of CHL reached the largest when the oxygen carrier was 10 wt%,which was 8.13 MJ/m^(3).And the gaseous product of MCT had the largest LHV with 30 wt%oxygen carrier,which was 8.83 MJ/m^(3).According to the kinetic analysis,the minimum value of apparent activation energy of MCT chemical looping gasification was 89.54 kJ⋅mol^(-1) with the oxygen carrier of 30 wt%,which was 50%less than that of MCT pyrolysis.And the minimum value for V-CHL was obtained when the mass fraction of Fe2O3 was 50 wt%.This paper could provide a reference for the choice of algae,the design of reactors,and the targeted regulation of the gaseous product for the algae CLG process.

关 键 词：Chemical looping gasification ALGAE Organic components Gaseous product distribution Kinetic analysis 

分 类 号：TK614.2[动力工程及工程热物理—生物能]