...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & fuels >Evaluation of a Spray-Dried CuO/MgAl_2O_4 Oxygen Carrier for the Chemical Looping with Oxygen Uncoupling Process
【24h】

Evaluation of a Spray-Dried CuO/MgAl_2O_4 Oxygen Carrier for the Chemical Looping with Oxygen Uncoupling Process

机译：喷雾干燥的CuO / MgAl_2O_4氧气载体在氧气解耦过程中化学成环的评价

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The chemical looping with oxygen uncoupling (CLOU) process is a chemical looping combustion (CLC) technology that allows for the combustion of solid fuels with inherent CO_2 separation. As in CLC technology, in the CLOU process, the oxygen necessary for fuel combustion is supplied by a solid oxygen carrier, which is moving between two reactors: the fuel and air reactors. The CLOU technology uses the property of some metal oxides (CuO, Mn_2O_3, and Co_3O_4), which can generate gaseous oxygen at high temperatures. The oxygen generated by the oxygen carrier reacts directly with the solid fuel, which is mixed with the oxygen carrier in the fuel reactor. The reduced oxygen carrier is transported to the air reactor, where it is oxidized by air. In this work, a material prepared by spray drying containing 60 wt % CuO and 40 wt % MgAl_2O_4 as supporting material was evaluated as an oxygen carrier for the CLOU process using different installations. First, the oxygen release rate and the fluidizan'on behavior, with regard to the agglomeration and attrition rate, were analyzed in a thermogravimetric analyzer (TGA) and in a batch fluidized bed, respectively. Then, the effects of the main operating conditions, such as the temperature, solids flow rate, and gas velocity in the fuel reactor, on the oxygen-carrier capability to release gaseous oxygen were analyzed in a continuous CLOU unit using N_2 and CO_2 as fluidizan'on media. In addition, the effect of the oxygen concentration in the air reactor on the capability of the oxygen carrier to be regenerated was evaluated. The results obtained showed that this oxygen carrier has suitable characteristics for the CLOU process. Nevertheless, after 40 h of continuous operation at high temperatures, the particle integrity decreased significatively, indicating the need to improve the lifetime of this kind of material for use in an industrial CLOU process.
机译：氧气解耦化学循环（CLOU）工艺是一种化学循环燃烧（CLC）技术，可燃烧具有固有CO_2分离作用的固体燃料。与CLC技术一样，在CLOU工艺中，燃料燃烧所需的氧气由固态氧气载体提供，固态氧气载体在两个反应堆之间移动：燃料反应堆和空气反应堆。 CLOU技术利用了某些金属氧化物（CuO，Mn_2O_3和Co_3O_4）的特性，它们可以在高温下生成气态氧。由氧载体产生的氧直接与固体燃料反应，该固体燃料在燃料反应器中与氧载体混合。还原的氧气载体被输送到空气反应器，在空气中被空气氧化。在这项工作中，通过喷雾干燥制备的包含60 wt％CuO和40 wt％MgAl_2O_4作为载体的材料被评估为使用不同设备的CLOU工艺的氧气载体。首先，分别在热重分析仪（TGA）和分批流化床中分析了关于团聚和磨损率的氧气释放速率和流化行为。然后，在以N_2和CO_2为流化剂的连续CLOU单元中，分析了主要操作条件（例如温度，固体流速和燃料反应器中的气体速度）对载气释放气态氧气的能力的影响。在媒体上。此外，评估了空气反应器中氧气浓度对氧气载体再生能力的影响。所得结果表明该氧载体具有适合于CLOU工艺的特性。但是，在高温下连续运行40小时后，颗粒完整性显着下降，这表明需要延长此类材料在工业CLOU工艺中的使用寿命。

著录项

  • 来源
    《Energy & fuels》 |2012年第mayajuna期|p.3069-3081|共13页
  • 作者

    Inaki Adanez-Rubio; Pilar Gayan; Alberto Abad; Luis F. de Diego; Francisco Garcia-Labiano; Juan Adinez;

  • 作者单位

    Department of Energy and Environment, Institute! de Carboquimica (ICB), Consejo Superior de Investigaciones Cientificas (CSIC), Miguel Luesma Castan, 4, Zaragoza S0018, Spain;

    Department of Energy and Environment, Institute! de Carboquimica (ICB), Consejo Superior de Investigaciones Cientificas (CSIC), Miguel Luesma Castan, 4, Zaragoza S0018, Spain;

    Department of Energy and Environment, Institute! de Carboquimica (ICB), Consejo Superior de Investigaciones Cientificas (CSIC), Miguel Luesma Castan, 4, Zaragoza S0018, Spain;

    Department of Energy and Environment, Institute! de Carboquimica (ICB), Consejo Superior de Investigaciones Cientificas (CSIC), Miguel Luesma Castan, 4, Zaragoza S0018, Spain;

    Department of Energy and Environment, Institute! de Carboquimica (ICB), Consejo Superior de Investigaciones Cientificas (CSIC), Miguel Luesma Castan, 4, Zaragoza S0018, Spain;

    Department of Energy and Environment, Institute! de Carboquimica (ICB), Consejo Superior de Investigaciones Cientificas (CSIC), Miguel Luesma Castan, 4, Zaragoza S0018, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    k: kinetic constant (mol atm~(-1)s~(-1)); rnF_(O_2): molar flow of oxygen (mol/s); rnF_(inFR): gas flow introduced in the fuel reactor (mol/s); rnF_(inAR): gas flow introduced in the air reactor (mol/s); rnF_(outAR): gas flow exiting the air reactor (mol/s) et al;

    机译：k：动力学常数（mol atm〜（-1）s〜（-1））;rnF_（O_2）：氧气的摩尔流量（mol / s）;rnF_（inFR）：引入燃料反应堆的气体流量（mol / s）;rnF_（inAR）：引入空气反应器的气体流量（mol / s）;rnF_（outAR）：离开空气反应器的气体流量（mol / s）等;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号