Journal
ENERGY
Volume 190, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2019.116360
Keywords
Chemical looping gasification (CLG); NiFe2O4 oxygen carrier; Toluene; Oxidation-catalysis; Biomass tar model compound
Categories
Funding
- National Natural Science Foundation of China [51776210]
- National Key Research and Development Program of China [2018YFB0605405]
- DNL Cooperation Fund, Chinese Academy of Sciences [DNL180205]
- Major International (Regional) Joint Research Project of the National Natural Science Foundation of China [51661145011]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [2018384]
Ask authors/readers for more resources
Efficient removal of tar is a major challenge for biomass gasification. A scheme based on chemical looping gasification (CLG) provides a promising alternative for converting biomass into syngas with low tar content. The current study investigates the reactivity of NiFe2O4 oxygen carrier for toluene (biomass tar model compound) removal. The NiFe2O4 oxygen carrier shows a dual-function of oxidation-catalysis for toluene cracking and significantly promotes toluene cracked into carbon and H-2. A suitable temperature for toluene cracking is determined at 850 degrees C. As the weight hourly space velocity (WHSV) increases by approximately a factor of nine, the toluene removal decreases slightly by 2.78%. The toluene removal does not significantly decrease with the crystal phase transformation of the oxygen carrier. Addition of steam significantly eliminates the carbon deposition, which decreases to 4.97% at S/C (steam/toluene) ratio of 1.20. The catalytic activity of NiFe2O4 initially remained stable for a long time, and then started showing a slight decrease after transitory activation during the long-term experiment (82 h). These results fully demonstrate that the NiFe2O4 is a good oxygen carrier for tar removal in biomass CLG. (C) 2019 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available