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. shu

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

1.
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

Corresponding author: SHEN Lai-hong,
Received Date: 27 May 2015
Available Online: 23 July 2015
Fund Project: 国家自然科学基金(51476029,51276037,51406035,51561125001)资助项目 (51476029,51276037,51406035,51561125001)

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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沈阳化工大学材料科学与工程学院沈阳 110142