柱塞气-液-固并流上行系统的确定性混沌行为

柱塞气－ 液－ 固并流上行系统表现出占据全部管截面的气栓段和气液固混合段间隔出现的流动结构。本文通过标准统计方法（ 功率谱） 和非线性混沌分析方法从定性和定量两方面证明了气栓和气－ 液－ 固混合段运动都是混沌运动。气栓运动的混沌动力学参数（ 相关维和Ｋｏｌｍｏｇｏｒｏｖ 熵） 明显比气－ 液－ 固混合段运动的小，从理论上表明描述气栓运动的动力学比气－ 液－ 固混合段运动的动力学简单，可预测度明显要大。文中还讨论了较精确确定重建伪相空间滞时的方法。

LOCAL LIQUID-PHASE OHARAOTERISTIOS OF THE SELF-ASPIRATED REVERSED FLOW JET LOOP REAOTOR

The local liquid--phase characteristics of the gas--liquid two-phase and gas--liquid--solid threephase self-aspirated reversed flow jet loop reactor with a concentric gas--liquid injection nozzle were studied experimentally. They facilitate the evaluation of local phenomena. The local instantaneous liquid velocities at different axial positions of the reactor were measured by using the modified pilot tube.The local liquid-phase turbulent structural parameters such as time-averaged velocity. turbulent nuctuating velocity and turbulent micro scale were calculated with the aid of the statistical theory of turbulence. In particular, effects of liquid jet flowrates and solid loadings on the profiles of the liquid--phase turbulent structural parameter both in the jet effective region and in the tubular region inside the draft tube were discussed.

多流体碱雾发生器烟气脱硫布风结构优化的数值模拟研究

在一种新型的多流体碱雾发生器半干法烟气脱硫技术中 ,碱雾发生器内雾化液滴与脱硫剂颗粒的惯性碰撞是影响整个工艺脱硫效率高低的关键因素之一。为了提高液、固颗粒间的碰撞活化效率 ,通过数值模拟的方法 ,对多流体碱雾发生器脱硫剂颗粒及携带风的 2种不同进风型式进行分析比较 ,结果表明均匀性好的圆环进风方式大大增强了雾化液滴与脱硫剂颗粒的碰撞活化作用 ,从而为碱雾发生器布风结构的优化提供合理方案。