耐蚀瓷质波纹填料流体力学与传质性能的研究

Study on Fluid Dynamics and Mass Transfer Performance of Corrosion-resistant Corrugated Ceramic Packing

耐蚀瓷质波纹填料具有很强的抗高温硫化氢和环烷酸腐蚀的性能,在腐蚀严重的高温传质环境中应用,可以替代不锈钢填料,延长检修周期。实验研究了耐蚀瓷质波纹填料的流体力学和传质性能,回归了经验关联式,可供工程设计参考。在试验范围内实测的25℃时的传质单元高度等于90 -410mm,最大气速操作范围可达F=3.5m/s,与一般常用填料相比,瓷质波纹填料具有较好的流体力学和传质性能,良好的再分配性能,较低的液相传质单元高度。同时指出了瓷质板波纹填料结构尺寸的优化方向。

The corrugated ceramic packings offer excellent resistance to high-temperature hydrogen sulfide and naphthenie acid corrosions. They can replace stainless steel packings in corrosive high-temperature mass transfer service to extend the operation cycle. In the laboratory tests, the fluid dynamics and mass transfer performance of corrosion-resistant corrugated ceramic packings are studied and empirical correlation is regressed, which provides valuable reference for project engineering. The measured unit mass transfer height at 25 oC in the tests is 90-410 mm and maximum operating vapor velocity is F= 3.5 m/s. As compared with conventional packings, corrugated packings provide better fluid dynamics and mass transfer performance, improved redistribution and lower liquid phase mass transfer unit height. The optimization of construction dimensions of the ceramic packings is recommended.