The internal components of a packing tower or plate tower are the core components of the tower. Their function is to provide a place for sufficient contact, mass transfer and heat transfer between gas and liquid phases and to ensure uniform distribution of fluids inside the tower, thereby improving separation efficiency, reducing pressure drop and avoiding amplification effects.
1.Tray
Function: Provide an interface for gas-liquid two-phase contact, promoting mass and heat transfer.
1.1 Common types:
Sieve tray: disperses gas into bubbles through the liquid layer through sieve holes, with a simple structure and reduced pressure.
Floating valve tray: The valve disc can adjust the opening with the change of gas volume, with high operational flexibility and efficiency.
Bubble cap tray: By using bubble caps to evenly distribute gas, the operation is stable, but the structure is complex.
Jet tray: uses gas kinetic energy to drive liquid flow, with high processing capacity and suitable for high gas velocities.
2.Chemical Packing
Type: Random packing and structured packing.
Random Packing: Raschig ring,Pall ring,Cascade ring, IMTP ring,VSP ring,etc.
Advantage: Random stacking, low cost, easy installation.
Structured Packing: Plastic structured packing, Ceramic structured packing and metal structured packing.
Advantage:Ordered arrangement, low pressure drop, high efficiency, suitable for precision separation.
Material: Plastic packing(PP, PE,CPVC,PTFE,PVDF,RPP,etc) /Ceramic packing /Metal packing(SS304,SS316L,etc)
Function: Capture liquid droplets or mist in the gas at the top of the tower, reducing liquid carryover losses;
Commonly used wire mesh demisters, baffle demisters, cyclone demisters, etc
Material: Stainless steel, PP ,Rpp,etc
5.Support plate
Function: Support the packing layer or tray, bear the weight of the packing layer, and prevent the packing from sinking; Ensure smooth passage of gases and liquids, with a free cross-sectional area generally ≥ 70% to 75%, to avoid local flooding.
6.Liguid collector
Function: Collect upper layer liquid at the segmented filling layer and redistribute it evenly to the lower layer filling, eliminating wall flow and channel flow; Commonly used structures include inclined plate, split type, and riser type.
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Post time: Jul-01-2025