Citation: SONG Yang-bo, XU Shao-ping, LI Ling-li, XIAO Ya-hui. Chemical looping gasification of coal char with Cu-olivine oxygen carriers[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(8): 916-923. shu

Chemical looping gasification of coal char with Cu-olivine oxygen carriers

State Key Laboratory of Fine Chemicals, Chemical Engineering Institute, Dalian University of Technology, Dalian 116024, China

Corresponding author: XU Shao-ping, spxu@dlut.edu.cn
Received Date: 29 March 2017
Revised Date: 26 May 2017

Figures(10)

A Cu-olivine oxygen carrier was prepared using impregnation method and used for steam gasification of coal char in a fixed bed reactor. It is shown that higher gasification temperature and steam/C molar ratio conduce to an increase in carbon conversion and syngas yield. The increase of CuO loading on the oxygen carrier and the oxygen carrier/char weight ratio leads to a higher carbon conversion but a lower syngas yield. The reaction activity of oxygen carrier has not been reduced after multiple regenerations at 950 ℃, which indicates that the olivine could inhibit the sintering of the supported Cu/CuO. The gasification at 800 ℃ in the presence of the oxygen carrier after 8th regeneration has a carbon conversion of 42.3%, a water conversion of 57.3% and a syngas yield of 2.12 L/(g·h).
- chemical looping gasification,
- coal char,
- Cu-olivine oxygen carrier,
- fixed bed reactor
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