Combustion Performance of Sewage Sludge in a Novel CLC System with a Two-stage Fuel Reactor
Combustion Performance of Sewage Sludge in a Novel CLC System with a Two-stage Fuel Reactor
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DOI：
10.1021/acs.energyfuels.7b02493
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发表时间：
2017-10
期刊：
影响因子：
5.3
通讯作者：
Jingchun Yan;Laihong Shen;Shouxi Jiang;Jian Wu;Tianxu Shen;Tao Song
中科院分区：
文献类型：
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作者：
Jingchun Yan;Laihong Shen;Shouxi Jiang;Jian Wu;Tianxu Shen;Tao Song
化学环燃烧（CLC）是一种极具发展前景且高效的污泥碳捕集燃烧技术。CLC反应器的结构对于固相和气相之间的紧密接触至关重要。本文提出了一种新型的两级燃料堆CLC装置。与传统的以单级鼓泡床作为燃料反应器的CLC装置不同，两级燃料反应器的设计可以使气相和固相充分接触，实现燃料反应器内气体流动的再分配。在该装置上进行了冷、热实验。在冷态模型上对气固流动特性进行了研究，系统已成功调试并稳定运行。反应堆间未发生气体泄漏。在热实验中，选择城市污水处理厂的SS作为固体燃料，选用0.3 ~ 0.45 mm的赤铁矿作为载氧剂。为了全面评估这种新型CLC系统的性能…
Chemical looping combustion (CLC) is a promising and efficient technology for sewage sludge (SS) combustion with carbon capture. The CLC reactor configuration is crucial to the intimate contact between the solid phase and the gas phase species. This work proposed a novel CLC unit with a two-stage fuel reactor. Different from the conventional CLC unit with a single-stage bubbling bed as fuel reactor, two-stage fuel reactor design can make gas phase and solid phase be in adequate contact and achieve gas flow redistribution in the fuel reactor. On this unit, both cold and hot experiments were conducted. The gas-solid flow characteristics were studied on the cold model, and the system was successfully commissioned and in stable operation. No gas leakage occurred between reactors. In the hot experiments, SS from the municipal wastewater treatment plant was chosen as solid fuel and hematite with a size range of 0.3–0.45 mm was used as oxygen carrier. To thoroughly evaluate the performance of this noval CLC syst...