当前位置：
X-MOL 学术
›
Int. J. Energy Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Chemical looping gasification of cotton stalk with bimetallic Cu/Ni/olivine as oxygen carrier
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-04-27 , DOI: 10.1002/er.5439 Yue Pan 1 , Yalkunjan Tursun 1 , Hairat Abduhani 1 , Yusan Turap 2 , Abulikemu Abulizi 1 , Dilinuer Talifua 1
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-04-27 , DOI: 10.1002/er.5439 Yue Pan 1 , Yalkunjan Tursun 1 , Hairat Abduhani 1 , Yusan Turap 2 , Abulikemu Abulizi 1 , Dilinuer Talifua 1
Affiliation
|
Bimetallic Cu/Ni/olivine oxygen carriers (OCs) were prepared using olivine as support material for chemical looping gasification (CLG). The cyclic redox behaviors and oxygen carrying capacity (Ro) of OCs were evaluated by thermo‐gravimetric analysis. The effect of Cu/Ni ratio, gasification temperature, steam to biomass ratio (S/B), oxygen carrier to biomass ratio (OC/B) on CLG of cotton stalk has been studied in a fixed bed. The OCs characterized using BET surface area, scanning electron microscopy (SEM), X‐ray diffraction (XRD), temperature‐programmed reduction (TPR) to investigate the physicochemical property of OCs during CLG. Result shows that the sintering problem of OC was progressively alleviated with the increasing Cu/Ni ratio. The olivine behaves as suitable OC support with oxygen carrying capacity of 1.07%. The redox reactivity of all of the OCs kept well during multiple redox cycles. The Ro of OCs progressively increased with the Cu/Ni ratio. By comparing the product gas concentration, carbon conversion, H2 + CO yield and gas yield over the invested OCs, the Cu9/Ni6/O was found to demonstrate better comprehensive CLG performance due to the synergistic effect of Cu and Ni. The maximum gas yield, H2 + CO yield and carbon conversion with Cu9/Ni6/O can be obtained at the S/B of 0.8 and OC/B of 2. Compared to theoretical value, 65% of lattice oxygen has been supplied by Cu9/Ni6/O during actual CLG process. The OC displayed better reactivity due to basic crystalline phase being preserved well during multiple CLG cycles.
中文翻译：
以双金属铜/镍/橄榄石为氧载体的棉秆化学循环气化
使用橄榄石作为化学环化气化（CLG）的载体材料，制备了双金属Cu / Ni /橄榄石氧载体（OCs）。循环氧化还原行为和载氧量（R o通过热重分析评估了OCs。研究了Cu / Ni比，气化温度，水蒸气与生物质比（S / B），氧载体与生物质比（OC / B）对棉秸秆CLG的影响。使用BET表面积，扫描电子显微镜（SEM），X射线衍射（XRD），程序升温还原（TPR）对OC进行表征，以研究CLG期间OC的理化性质。结果表明，随着Cu / Ni比的增加，OC的烧结问题逐渐得到缓解。橄榄石表现为合适的OC载体，载氧能力为1.07％。在多个氧化还原循环中，所有OC的氧化还原反应性均保持良好。将R Ô铜的含量随着铜/镍比的增加而逐渐增加。通过比较产物气体浓度，碳转化率，H 2 + CO收率和所投入的OC的气体收率，发现Cu9 / Ni6 / O由于Cu和Ni的协同作用而表现出更好的综合CLG性能。 在S / B为0.8且OC / B为2的情况下，可以获得最大的气体收率，H 2 + CO收率和Cu9 / Ni6 / O的碳转化率。与理论值相比，已提供了65％的晶格氧实际CLG过程中为Cu9 / Ni6 / O。由于在多个CLG循环中可以很好地保留基本结晶相，因此OC显示出更好的反应性。
更新日期：2020-04-27
中文翻译：
以双金属铜/镍/橄榄石为氧载体的棉秆化学循环气化
使用橄榄石作为化学环化气化（CLG）的载体材料，制备了双金属Cu / Ni /橄榄石氧载体（OCs）。循环氧化还原行为和载氧量（R o通过热重分析评估了OCs。研究了Cu / Ni比，气化温度，水蒸气与生物质比（S / B），氧载体与生物质比（OC / B）对棉秸秆CLG的影响。使用BET表面积，扫描电子显微镜（SEM），X射线衍射（XRD），程序升温还原（TPR）对OC进行表征，以研究CLG期间OC的理化性质。结果表明，随着Cu / Ni比的增加，OC的烧结问题逐渐得到缓解。橄榄石表现为合适的OC载体，载氧能力为1.07％。在多个氧化还原循环中，所有OC的氧化还原反应性均保持良好。将R Ô铜的含量随着铜/镍比的增加而逐渐增加。通过比较产物气体浓度，碳转化率，H 2 + CO收率和所投入的OC的气体收率，发现Cu9 / Ni6 / O由于Cu和Ni的协同作用而表现出更好的综合CLG性能。 在S / B为0.8且OC / B为2的情况下，可以获得最大的气体收率，H 2 + CO收率和Cu9 / Ni6 / O的碳转化率。与理论值相比，已提供了65％的晶格氧实际CLG过程中为Cu9 / Ni6 / O。由于在多个CLG循环中可以很好地保留基本结晶相，因此OC显示出更好的反应性。
京公网安备 11010802027423号