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

SONG Yang-bo; XU Shao-ping; LI Ling-li; XIAO Ya-hui

Volume 45 Issue 8

Aug. 2017

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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.

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.

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.

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.

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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

Received Date: 2017-03-29
Rev Recd Date: 2017-05-26

Available Online: 2021-01-23

Publish Date: 2017-08-10

Abstract

Abstract

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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References(23)

References

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