Chemical-looping auto-thermal reforming of biomass using Cu-based oxygen carrier
Chemical-looping auto-thermal reforming of biomass using Cu-based oxygen carrier
复制标题
DOI：
10.1016/j.apenergy.2015.04.093
复制
发表时间：
2015-11
期刊：
影响因子：
11.2
通讯作者：
Haibo Zhao;Lei Guo;Xixian Zou
中科院分区：
文献类型：
--
作者：
Haibo Zhao;Lei Guo;Xixian Zou
生物质化学环重整(CLR)利用氧载体(OC)上的活性晶格氧，为生物质转化为合成气提供了一条新途径。本研究使用的是铜基有机碳，而不是常用的铁基或镍基有机碳。可能的优点是，CuO与气化产物之间的放热反应有利于燃料反应器中生物质的自热重整。在不同温度下，对不同载体(石英砂、铁基和铜基接触网)进行了间歇沸腾床实验。研究发现，使用铜基OCS后，气产率和碳转化效率显著提高，但气化效率和低热值相应降低，这是由于高活性铜基OCS促进了碳的转化，同时也消耗了更多的可还原气体。铜基OCS的存在有助于降低合成气中的C2Hm和焦油。焦油含量随着温度的升高而降低，而C2Hm含量则是先升高后降低。
Chemical-looping reforming (CLR) of biomass, which utilizes active lattice oxygen from oxygen carrier (OC), provides a novel route to convert biomass into synthesis gas. This research utilized Cu-based OC rather than commonly-used Fe- or Ni-based OC in the process. The possible advantage is the exothermic reactions between CuO and gasification products are beneficial to auto-thermal reforming of biomass in fuel reactor. Batch fluidized bed experiments with different carriers (silica sand, Fe-based or Cu-based OCs) were conducted at different temperatures. It was found that when using Cu-based OCs, the gas yield and carbon conversion efficiency increased significantly, but the gasification efficiency and low heating value decreased accordingly, which are ascribed to the high-reactivity Cu-based OCs prompt the carbon conversion and also consume more reducible gases. The presence of Cu-based OCs help reduce C2Hm and tar in syngas. Additionally, the tar content decreased with temperature increase, while C2Hmcontent first increased then decreased.