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Liquid Collector/Liquid Distributor
From a process standpoint, the most important column internals is liquid distributors. A liquid distributor is required at all locations in the column where an external liquid stream is introduced. In addition to providing a uniform liquid distribution pattern to the top of the packed bed, the distributor must provide sufficient gas passage area to avoid a high-pressure drop or liquid entrainment. The liquid distributor should have a high turndown ratio and be resistant to fouling. The table listed below gives some conventional distributors.
Parameters of Liquid Collector/Liquid Distributor
|ITEM||Orifice ladder liquid distributor||Spray nozzle liquid distributor||Orifice pan liquid distributor||Weir orifice liquid distributor||Orifice trough liquid distributor||Weir trough liquid distributor|
|Distribute capacity||middle||Low to middle||high||high||middle||middle|
|Liquid load (m3/m2.h)||0.25~1.5||Wide range||Wide range||Wide range||Wide range||Wide range|
|Diameter (m)||> 0.45||random||random normal < 1.2||random normal < 1.2||random||random|
|Resistant of fouling||high||Low to middle||high||middle||low||low|
|Gas resistance||low||low||high||Low to middle||high||high|
|Effect on corrosion||high||low||high||high||low||low|
|Effect on thickness of liquid||no||no||yes||yes||yes||yes|
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