Gasification reactivity of biomass char with oxygen carrier CuO

RAN Jing-yu; ZHANG Song; QIN Chang-lei; YU Jian-gong; FU Fan-xuan; YANG Lin

Volume 42 Issue 11

Nov. 2014

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Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(11): 1316-1323

RAN Jing-yu, ZHANG Song, QIN Chang-lei, YU Jian-gong, FU Fan-xuan, YANG Lin. Gasification reactivity of biomass char with oxygen carrier CuO[J]. Journal of Fuel Chemistry and Technology, 2014, 42(11): 1316-1323.

Citation:

RAN Jing-yu, ZHANG Song, QIN Chang-lei, YU Jian-gong, FU Fan-xuan, YANG Lin. Gasification reactivity of biomass char with oxygen carrier CuO[J]. Journal of Fuel Chemistry and Technology, 2014, 42(11): 1316-1323.

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Gasification reactivity of biomass char with oxygen carrier CuO

1.
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, China;
2.
Institute of Energy & Environment Chongqing University, Chongqing 400030, China

Received Date: 2014-05-06
Rev Recd Date: 2014-07-16
Publish Date: 2014-11-30

Abstract

Abstract

Calculations of reactions between biomass char and oxygen carriers CuO were conducted via the method of Gibbs free energy minimization. The effect of temperature, mass ration of oxygen carrier/biomass char and pressure on the gasification of biomass char was examined. The reactions were experimentally investigated using thermogravimetric analysis and scanning electron microscopy (SEM). The results show that when using CuO as oxygen carrier in chemical looping gasification (CLG) of biomass char, the conversion rate of biomass char is improved with increasing reaction temperature. The oxygen carrier CuO starts to sinter when the reaction temperature is above 750 ℃. The addition of oxygen carrier has the best enhancement on the CLG of biomass char with mass ratio of biomass char/CuO being 1:6. It is also found that the increase of reaction pressure would inhibit the CLG of biomass chars.
- chemical-looping gasification,
- biomass char,
- thermodynamic calculations,
- thermogravimetric analysis

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References

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