Chemical looping combustion of sewage sludge with oxygen carrier of cement-modified hematite

NIU Xin; SHEN Lai-hong; XIAO Jun; JIANG Shou-xi; GU Hai-ming

Volume 43 Issue 11

Nov. 2015

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NIU Xin, SHEN Lai-hong, XIAO Jun, JIANG Shou-xi, GU Hai-ming. Chemical looping combustion of sewage sludge with oxygen carrier of cement-modified hematite[J]. Journal of Fuel Chemistry and Technology, 2015, 43(11): 1402-1408.

Citation:

NIU Xin, SHEN Lai-hong, XIAO Jun, JIANG Shou-xi, GU Hai-ming. Chemical looping combustion of sewage sludge with oxygen carrier of cement-modified hematite[J]. Journal of Fuel Chemistry and Technology, 2015, 43(11): 1402-1408.

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Chemical looping combustion of sewage sludge with oxygen carrier of cement-modified hematite

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

Funds: The project was supported by the National Natural Science Foundation of China (51476029, 51276037, 51406035, 51561125001).

Received Date: 2015-05-27
Rev Recd Date: 2015-07-23
Publish Date: 2015-11-30

Abstract

Abstract

Chemical looping combustion (CLC) for sewage sludge has a relatively low efficiency using hematite as oxygen carrier. The experiments on improving the reactivity of hematite with cement modified for CLC of sewage sludge in a 1kW_th continuous CLC unit were carried out. Compared to hematite oxygen carrier, the concentrations of unconverted combustible gas rapidly decrease when the cement-hematite is used. Moreover, both carbon conversion and combustion efficiency increase when the cement is added. Although some ash particles deposit on the surface of oxygen carrier and a part of Fe₂O₃ is reduced to FeO, there are no defluidization and sintering problems.
- chemical looping combustion,
- sewage sludge,
- hematite,
- cement

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References(19)

References

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