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Co-Combustion of Oil Sludge Char and Brown Coal in a Continuous Fluidized-Bed Combustor |
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| Authors: | Bowen Shi Fa Qiao Prof Dr Guangyi Zhang Xuan Liu Prof Dr Yuming Zhang Hongyan Wen Fang Wang Jianling Zhang Dr Guangwen Xu |
| Affiliation: | 1. Beijing Technology and Business University, School of Ecology and Environment, No. 33, Fucheng Road, 100048 Beijing, China
Both authors contributed equally to this paper.;2. Shenyang University of Chemical Technology, School of Chemical Engineering, No. 11 Street, Economic and Technological Development Zone, Tiexi District, 110142 Shenyang, Liaoning Province, China Chinese Academy of Sciences, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, North No. 1 Street, Zhongguangcun, Haidian district, 100190 Beijing, China Both authors contributed equally to this paper.;3. Beijing Technology and Business University, School of Ecology and Environment, No. 33, Fucheng Road, 100048 Beijing, China;4. Shenyang University of Chemical Technology, School of Chemical Engineering, No. 11 Street, Economic and Technological Development Zone, Tiexi District, 110142 Shenyang, Liaoning Province, China Chinese Academy of Sciences, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, North No. 1 Street, Zhongguangcun, Haidian district, 100190 Beijing, China;5. China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, No. 18, Fuxue Road, Changping District, 102249 Beijing, China;6. Chinese Academy of Sciences, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, North No. 1 Street, Zhongguangcun, Haidian district, 100190 Beijing, China;7. Shenyang University of Chemical Technology, School of Chemical Engineering, No. 11 Street, Economic and Technological Development Zone, Tiexi District, 110142 Shenyang, Liaoning Province, China |
| Abstract: | For developing technologies for innocent disposal of/energy recovery from high-ash oil sludge char (OSC), it was continuously combusted in a 10 kg h−1 fluidized-bed combustor. Addition of brown coal (BC) improved its combustion, but excessive BC was prone to cause slagging. Fine coke particles in OSC and volatiles in BC led to staged temperatures along the fluidized bed through air-staging co-combustion, enabling excellent combustion performance as well as efficient NOx reduction, especially when coupled with selective non-catalytic reduction. Thus, there is a potential to cleanly recover energy from OSC by its co-combustion with BC. |
| Keywords: | Air-staging combustion Brown coal Fluidized bed Nitrogen oxides Oil sludge char |