Large diameter absorption tower use Hualai trough liquid
distributor
1. Absorption tower trough liquid distributor
Liquid distributors to be used in applications where there is less
demanding on packing performance. For example, heat transfer
applications, stripping and absorption services.
Column diameter mm | System fouling tendency | Specific liquid load M3/m2*h | Suitable type of liquid distributor |
| ＜1200 | Low / medium / high | 2.5 - 75 | Pan type liquid distributor |
| ＞300 | Low / medium | 2 - 120 | Deck type liquid distributor with long risers |
| ＞900 | Low / medium / high | 5 - 100 | Weir trough type liquid distributor |
| ＞500 | low | 4 - 25 | Pipe arm type liquid distributor |
| all | high | 0.5 - 120 | Spray type liquid distributor |
2. Absorption tower trough liquid distributor structure:
Orifice trough type distributors consist of parallel troughs with
perforated holes in the bottom for liquid flow. Vapor rises in the
space between the troughs. The troughs are often interconnected by
cross channels (called as parting box), which help equalize the
liquid level in different troughs. This trough type liquid
distributors provide more open area for vapor flow and is easier to
support.
Orifice type distributor can be designed to have a large number of
drip points to provide superior liquid distribution, though it may
suffer from corrosion and plugging. Orifices are sized to maintain
a minimum liquid head at desired turndown conditions & to avoid
distributor overflow during turn up condition. Very small orifice
diameters (<4mm) are avoided to prevent fouling.
3. Absorption tower trough liquid distributor characteristics:
Liquid distributor is the most important column internal from a
process point of view. It is required to distribute liquid
uniformly at the top of packing tower. Meanwhile a liquid
distributor much have sufficient gas passage area to avoid high
pressure drop or liquid entrainment.
Characteristics of an ideal liquid distributor:
Uniform liquid distribution; Resistance to fouling; Proper trundown
capabitity;Low gas pressure drop; Minimum height; Higher
cross-mixing capabity.
4. Absorption tower trough liquid distributor production
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ideas!
