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基于欧拉-双流体模型和流态化氯化临界流化速度经验公式,结合云南高钛渣物性参数,研究了其流态化氯化的初始流化速度下高钛渣流态化氯化特性、气泡运动对床层的扰动、气泡大小与分布板位置关系。研究结果表明:Grace方程能准确预测B类颗粒窄粒径的高钛渣流态化氯化气泡行为,Wen-Yu方程预测的初始流化速度下乳相和气泡出现时间延后;完全流化速度下,通过上升、合并长大、破裂过程,在分布板位置形成气泡;通过钛渣固体矢量图得出,整个床层以气泡为分界,气泡上升对上、下部颗粒的流动产生影响,导致床层不均匀。
Based on the Euler-two-fluid model and the empirical formula of critical fluidization chlorination velocity, combined with the physical parameters of high titanium slag in Yunnan, the fluidized chlorination of high titanium slag at the initial fluidization velocity of fluidized chlorination Characteristics, the bubble motion on the bed disturbance, bubble size and the distribution board position relationship. The results show that: the Grace equation can accurately predict the fluidized chlorinated bubbles of the high titanium slag with narrow particle size of type B particles, the onset time of the emulsified phases and bubbles at the initial fluidization velocity predicted by Wen-Yu equation, and the complete fluidization Speed, through the rise, the merger grows, the rupture process, forms the bubble in the distribution plate position; Through the titanium slag solid vector diagram obtains, the entire bed to the air bubble as the boundary, the air bubble rises to the upper and lower particle flow influence, causes Uneven bed.