Premium
Multicycle investigation of a sol‐gel‐derived Fe 2 O 3 /ATP oxygen carrier for coal chemical looping combustion
Author(s) -
Guo Qingjie,
Yang Mingming,
Liu Yongzhuo,
Yang Qinqin,
Zhang Yunpeng
Publication year - 2016
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.15100
Subject(s) - chemical looping combustion , reactivity (psychology) , coal , oxygen , combustion , chemistry , chemical engineering , redox , carbon fibers , fluidized bed , chemical reaction , materials science , waste management , inorganic chemistry , organic chemistry , composite material , engineering , medicine , alternative medicine , pathology , composite number
Fe‐based oxygen‐carrier particles with attapulgite (ATP) as a support material for coal chemical looping combustion (CLC) have been prepared using a sol‐gel approach. The multiredox characteristics of the prepared Fe4ATP6 (Fe 2 O 3 to ATP mass ratio of 40:60) were experimentally examined in a batch fluidized bed reactor at 900°C. The experimental results indicated that the synergistic reactions between ATP and Fe 2 O 3 increased the coal conversion. Fe4ATP6 exhibited high reactivity, particularly for low‐rank coals, in the CLC process. The improved pore structure and surface area were responsible for the high reactivity of Fe4ATP6. In 60 redox cycles, H 2 was mainly generated in the outlet gas as the carbon conversion efficiency had reached 95%, and both the coal combustion efficiency and CO 2 capture efficiency were greater than 95%. © 2015 American Institute of Chemical Engineers AIChE J , 62: 996–1006, 2016