管内绿液输运过程中结盐机理

运用化学分析、X射线衍射仪、相位多普勒粒子分析仪等手段对绿液及其盐析物质的物理性质进行了测试，并考察了不同表面粗糙度及不同材质的管内结盐速率的变化规律．同时，结合晶体动力学和流体力学理论对试验结果进行了分析．结果表明：温度与绿液本身的物理属性对盐类物质的析出有直接影响，且较小的粒径分布加强了絮凝作用，构成绿液动态结盐的重要因素；在盐析晶体异相成核及诱导期阶段，壁面粗糙度起重要作用，并对其生长期产生影响，即晶体在粗糙度较小的壁面上的生长滞后于粗糙度较大的壁面；材质影响结盐速率，其原因可能为不同材质具有不同的表面活化能．

Crystal mechanism in pipelines while conveying green liquid

Chemical analysis, X-ray diffraction and phase doppler particle analyzer are utilized to test the characteristic of green liquid and its salt-out substance. The changing law of crystal velocity in different surface roughness and materials of pipelines is investigated. The experimental results are analyzed by using the theories of crystal dynamics and hydrodynamics. It was found that, the temperature and physical property of green liquid influence the salt crystal separation directly, and the smaller particle diameter distribution strengthens the flocculation function, which becomes an important factor on green liquid dynamic crystal. During the heterogeneous nucleation and induction period of the salt-out crystal, surface roughness plays an important role on its growing period. Namely, the crystal grows slower on wall surface of less roughness than that of more roughness. Materials can influence the crystal velocity due to different material with different surface activation energy.