滴流床反應器氣液分布器CFD模擬
發(fā)布時間:2019-01-03 16:39
【摘要】:以溢流型滴流床反應器進口氣液分布器為研究對象,利用計算流體力學方法(CFD)進行分布器的分析及開發(fā)。研究結果顯示,對于大氣液比、低噴淋密度的反應系統(tǒng),在相同液層高度條件下,管內(nèi)的氣相流速顯著影響過孔液速,氣速較大時,液體過孔流速也相對較大。同時由于液量偏少,液體容易形成中心匯流,且難以向溢流方向的垂直方向擴散。采用雙層碎流結構后能使液體在整個截面分布更均勻。
[Abstract]:The inlet gas-liquid distributor of overflow trickle bed reactor was studied. The distributor was analyzed and developed by computational fluid dynamics (CFD) method. The results show that, for the reaction system with low spray density and atmospheric liquid ratio, the gas velocity in the tube has a significant effect on the velocity of the porous liquid under the same liquid layer height, and when the gas velocity is larger, the velocity of the liquid passing through the pore is relatively larger. At the same time, the liquid is easy to form a central confluence due to the small amount of liquid, and it is difficult to diffuse to the vertical direction of overflow. The liquid distribution in the whole cross section can be more uniform with the double layer flow structure.
【作者單位】: 中國石油化工股份有限公司上海石油化工研究院綠色化工與工業(yè)催化國家重點實驗室;
【分類號】:TQ052
本文編號:2399630
[Abstract]:The inlet gas-liquid distributor of overflow trickle bed reactor was studied. The distributor was analyzed and developed by computational fluid dynamics (CFD) method. The results show that, for the reaction system with low spray density and atmospheric liquid ratio, the gas velocity in the tube has a significant effect on the velocity of the porous liquid under the same liquid layer height, and when the gas velocity is larger, the velocity of the liquid passing through the pore is relatively larger. At the same time, the liquid is easy to form a central confluence due to the small amount of liquid, and it is difficult to diffuse to the vertical direction of overflow. The liquid distribution in the whole cross section can be more uniform with the double layer flow structure.
【作者單位】: 中國石油化工股份有限公司上海石油化工研究院綠色化工與工業(yè)催化國家重點實驗室;
【分類號】:TQ052
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