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通过物理模拟对高压底吹条件下气泡行为进行研究,分析了压力、底吹流量对气泡的影响。研究表明,当压力由常压增加到1.5 MPa时,氮气泡直径由7.5 mm减小到2.0 mm,氮气泡数由35个增加到125个;当底吹流量由0.07m3/h增加到0.17 m3/h,常压下气泡的直径由7.1 mm增加到8.5 mm,高压下气泡的直径由2.5 mm增加4.2 mm。底吹流量有利于氮气泡的长大,由于流量过低,不如压力对气泡行为的影响效果显著。
The bubble behavior under high pressure bottom blowing was studied by physical simulation, and the influence of pressure and bottom blowing flow on the bubble was analyzed. The results show that when the pressure increases from atmospheric pressure to 1.5 MPa, the diameter of nitrogen bubble decreases from 7.5 mm to 2.0 mm and the number of nitrogen bubbles increases from 35 to 125. When the bottom blowing rate increases from 0.07 m3 / h to 0.17 m3 / h, the diameter of the bubble increased from 7.1 mm to 8.5 mm under atmospheric pressure, and the diameter of the bubble increased from 2.5 mm to 4.2 mm under high pressure. Bottom blowing flow is conducive to the growth of nitrogen bubbles, the flow is too low, not as good as pressure on the bubble effect of significant effect.