疏水载体和填料对氢-水液相催化交换床传质性能的影响

Effects of Hydrophobic Carrier and Packing on the Mass Transfer Capabilities in Hydrogen-water Liquid Phase Catalytic Exchange Bed

以疏水催化剂与填料分层装填催化交换床,研究催化剂的疏水载体、惰性填料及二者的装填比对氢 水液相催化交换床传质性能的影响。结果表明:C PTFE是适宜的催化剂载体;Al2O3填料床操作弹性差,螺旋填料的床层传质优于θ填料装填的床层;填料用新配制的王水处理后,床层的可操作性和传质性能有较大改善;催化剂与填料的装填比为1∶4时,床层传质性能较好。

Hydrogen-water liquid phase catalytic exchange bed was packed with sandwich layers of the catalyst and the packing, and the effects of catalyst carrier, inert packing and their filled ratio on the overall mass transfer coefficient (Kya) were investigated experimentally. The results show that C-PTFE is suitable for hydrophobic catalyst. Kya of the bed with catalyst-stainless steel mini-spiral packing is better than that with stainless steel θ-packing, and the active Al2O3 is not suitable for the exchange bed. Moreover, if the stainless steel mini-spiral packing is etched in aqua regia, the operating flexibility and overall mass transfer capability of exchange bed are improved notably. The preferable packing ratio (catalyst/packing) is 1:4.