摘要
为处理贫铀屑,消除安全隐患,本文在已有实验的基础上设计了一种新型煅烧炉——可控氧化煅烧炉,介绍了煅烧炉可控氧化的工艺原理,通过炉尾进管、母管开孔的进气方式,尽量满足铀屑的均匀氧化;并对开孔进气的流量和速率进行控制,保证炉内的铀屑不剧烈燃烧,控制热量的释放。为进一步对设计煅烧炉的可控氧化性能进行验证,本文利用FLUENT软件对煅烧炉内空气可控氧化过程进行了模拟计算,分析煅烧炉内中轴线及偏轴线上空气的速率分布,结果表明母管开孔等量进气时炉内速率不均匀,会造成铀屑氧化不均。文章最后对煅烧炉内空气进气流量分配进一步优化。
In order to treat Uranium turning and avoid danger,the paper is designing a new type of furnace,the Controllable Oxidizing Furnace(COF),basing on experiment.The process principium of the COF is expatiated in this paper,that Uranium turning will be oxygenized as possible as uniformly by the means of holing in total air entrance tube through the end of the COF and burnt moderately to emit heat inchmeal by controlling the flux and velocity of air injected into the COF.Finally,in order to validate the performance on controllable oxidizing of the COF the FLUENT soft is used to simulate the controllable oxidizing process of air in the COF.The distribution of velocity in the central axis and offset axis prove that the equivalent flux of air injected into the COF doesn't achieve uniform velocity,and Uranium turning won't be oxygenized uniformly.Therefore,it's necessary to optimize the distribution of the air flux to obtain the uniformity of velocity in the both axes.
引文
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