文章利用数值模拟方法研究了COREX预还原竖炉内煤气停留时间分布(RTD)特性,分析了CGD (central gas distribution)装置对炉内煤气RTD分布特性的影响,并对不同熔炼率下炉内煤气RTD规律进行了研究。模拟结果表明,安装CGD后,增加了竖炉底...文章利用数值模拟方法研究了COREX预还原竖炉内煤气停留时间分布(RTD)特性,分析了CGD (central gas distribution)装置对炉内煤气RTD分布特性的影响,并对不同熔炼率下炉内煤气RTD规律进行了研究。模拟结果表明,安装CGD后,增加了竖炉底部中心供气,提高了煤气平均停留时间。此外,CGD的安装降低了炉内平均停留时间的无量纲方差,且有效减少了炉内死区体积分数,有利于炉内气固相间的还原反应及传质、传热。随着熔炼率增加,炉内煤气平均停留时间缩短,死区体积分数减小。展开更多
On May 12,CIIS held a roundtable meeting on global development with the US-based Center for Global Development(CGD).CGD's President Emeritus Nancy Birdsall and Senior Fellow Scott Morris briefed on the newly relea...On May 12,CIIS held a roundtable meeting on global development with the US-based Center for Global Development(CGD).CGD's President Emeritus Nancy Birdsall and Senior Fellow Scott Morris briefed on the newly released CGD report on the governance of multilateral development banking.CIIS Vice President Rong Ying chaired the roundtable,which was attended by about 30 experts and scholars from CIIS and several other Chinese research institutes.展开更多
文摘文章利用数值模拟方法研究了COREX预还原竖炉内煤气停留时间分布(RTD)特性,分析了CGD (central gas distribution)装置对炉内煤气RTD分布特性的影响,并对不同熔炼率下炉内煤气RTD规律进行了研究。模拟结果表明,安装CGD后,增加了竖炉底部中心供气,提高了煤气平均停留时间。此外,CGD的安装降低了炉内平均停留时间的无量纲方差,且有效减少了炉内死区体积分数,有利于炉内气固相间的还原反应及传质、传热。随着熔炼率增加,炉内煤气平均停留时间缩短,死区体积分数减小。
文摘On May 12,CIIS held a roundtable meeting on global development with the US-based Center for Global Development(CGD).CGD's President Emeritus Nancy Birdsall and Senior Fellow Scott Morris briefed on the newly released CGD report on the governance of multilateral development banking.CIIS Vice President Rong Ying chaired the roundtable,which was attended by about 30 experts and scholars from CIIS and several other Chinese research institutes.