The requirements of separation process shall be considered in the selection of packing types, generally the following aspects shall be considered:

（1） Generally speaking, the mass transfer efficiency of structured packing is higher than that of bulk packing.

(2) If the flux is large and the mass transfer efficiency is high, the packing with high flooding point gas velocity or gas phase kinetic energy factor should be selected.

(3) The pressure drop of packing layer should be low.

(4) The packing has strong anti fouling and blocking performance, and is convenient for disassembly and maintenance.

Selection of packing specification selection of packing type: the selection of packing type shall consider the requirements of separation process, generally considering the following aspects:

(1) Generally speaking, the mass transfer efficiency of structured packing is higher than that of bulk packing.

(2) If the flux is large and the mass transfer efficiency is high, the packing with high flooding point gas velocity or gas phase kinetic energy factor should be selected.

(3) The pressure drop of packing layer should be low.

(4) The packing has strong anti fouling and blocking performance, and is convenient for disassembly and maintenance.