① Through regular arrangement of components, uniform and regular gas-liquid flow channel is formed, so that gas-liquid contact in an orderly manner, so as to strengthen mass transfer, reduce amplification effect, reduce gas flow pressure drop and low liquid holding capacity. It is especially suitable for vacuum distillation of heat sensitive materials.
② According to the test, the performance of structured packing is better than that of bulk packing and tray under FP = 0.3 (vacuum, atmospheric distillation and absorption process with less liquid). However, for the high pressure distillation and absorption of FP ≥ 0.5, the liquid spray density is very high and the gas backmixing is serious, which makes the efficiency of structured packing decrease sharply.
③ The absorption performance of structured packing is well controlled.
④ The treatment of foaming materials with structured packing is better than that of bulk packing or tray.
⑤ For all kinds of structured packing made of metal mesh and thin plate (thickness 0.1-0.2mm), the service life is short in corrosive medium, while the regular packing made of plastic mesh, plate and ceramic plate is corrosion-resistant.
⑥ The metal plate corrugated packing with large crest height, such as 125Y, has a certain degree of anti fouling and plugging performance. Grid packing (especially plastic products) has self-cleaning ability and good anti fouling and blocking performance when spraying at high gas velocity. However, all kinds of structured fillers with mesh, pierced plate or deep surface groove have poor anti fouling and plugging performance, and can not be used in occasions with solid particles or easy coking.
⑦ Regular packing is more difficult to load and unload than bulk packing. It is easy to be damaged and not easy to clean.