Evaluation of (MnxFe1-x)2TiyOz particles as oxygen carrier for Chemical Looping Combustion

被引：5
作者：
Abian, Maria [1 ]
Abad, Alberto [1 ]
Izquierdo, Maria T. [1 ]
Gayan, Pilar [1 ]
de Diego, Luis F. [1 ]
Garcia-Labiano, Francisco [1 ]
Adanez, Juan [1 ]
机构：
[1] Inst Carboquim ICB CSIC, Miguel Luesma Castan 4, E-50018 Zaragoza, Spain
来源：
13TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-13 | 2017年 / 114卷
关键词：
CO2; capture; CLC; CLOU; Manganese ferrites; Coal; OXIDES;
D O I：
10.1016/j.egypro.2017.03.1171
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The present work accomplishes a screening of the performance of Mn-Fe-Ti based oxygen carriers, prepared with different Mn/(Mn+ Fe) molar ratios in the general formula (MnyFe1-y) Ti0.15Ox. The oxygen carriers were prepared by physical mixing followed by pelletizing under pressure, calcining, crushing and sieving in the 100-300 mu m particle size interval. The characterization of the carriers is based on the evaluation of their crushing strength, magnetic properties and reduction and oxidation behavior through TGA experiments at temperatures suitable for the CLC process (i. e. 850-950 degrees C). In addition, the main chemical structures of the Mn-Fe-Ti system were identified as a function of the Mn/(Mn+ Fe) molar ratio. Oxygen uncoupling property was analyzed by reduction under a N-2 atmosphere and the capability to interact with fuel gases was analyzed by using CH4, H-2 and CO. Results indicate that the (MnyFe1-y) Ti0.15Ox oxygen carriers with Mn/(Mn+Fe) molar ratios of 0.55-0.87 have very promising properties for the CLC process with solid fuels. (C) 2017 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：302 / 308
页数：7
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