| Customization: | Available |
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| Manufacturing Process: | Forging |
| Surface Treatment: | Oxidation |
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The trough liquid distributor is a high-performance liquid distributor used in the feed section of the packing tower. The trough liquid distributor has the advantages of easy installation, uniform liquid distribution, high spray point density, and extremely low pressure drop, and is currently widely used. A slot type liquid distributor is usually composed of a distribution groove (also known as a main groove or a primary groove) and a distribution groove (also known as a secondary groove or a secondary groove). The first stage slot initially divides the liquid into several streams through holes at the bottom of the slot, and distributes them to the liquid distribution slot below. The bottom (or wall) of the distribution slot is equipped with holes (or conduits) to evenly distribute the liquid on the packing layer. The slot type liquid distributor has great operating flexibility and excellent anti fouling and blocking performance. Especially suitable for separation platforms with atmospheric liquid loads and high viscosity liquids containing solids as floats. Due to its excellent distribution performance and anti fouling performance, it has a wide range of applications.
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Liquid Distributor Comparison
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Item
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Ladder type
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Spray nozzle type
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Pan with bottom hole
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Trough with bottom hole
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Pan with overflow
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Trough with overflow
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Power
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pressure
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gravity
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pressure
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gravity
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gravity
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gravity
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gravity
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Distribution quality
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Middle
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High
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Low to middle
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High
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High
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Low to middle
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Low to middle
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capacity
m3/(m2·h)
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0.25-2.5
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0.25-10
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Wide range
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Wide range
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Wide range
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Wide range
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Wide range
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Tower dia. /m
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>0.45
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Any
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Any
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Any, often<1.2
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Any, often>0.6
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Any, often<1.2
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Any, often>0.6
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Plugging degree
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High
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High
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Middle to high
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Middle
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Middle
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Low
|
Low
|
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Air resistance
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Low
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Low
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Low
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High
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Low
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High
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Low to high
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Levelness requirements
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None
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Low
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None
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High at low load
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High at low load
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High
|
high
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Effect of corrosion
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High
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Middle
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High
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High
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High
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Low
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Low
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Influence of liquid level fluctuation
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None
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Small
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None
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Middle
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Middle
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Big
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Big
|
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Entrainment
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High
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Low
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High
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Low
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Low
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Low
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Low
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Weight
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Low
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Low
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Low
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High
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Middle
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High
|
middle
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Column Diameter
mm
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Specific liquid load
M3/m2*h
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System fouling tendency
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Turndown ratio
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Suitable type of liquid distributor
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250 - 900
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0.75 - 5
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Low - medium
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<10:1
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Trough type liquid distributor with sump
Deck type liquid distributor with orifices on drip tubes
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5 - 30
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Low - medium
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2:1
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Pan type liquid distributor
Trough type liquid distributor with sump
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|
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>30
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Low - medium
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2:1
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Pan type liquid distributor
Trough type liquid distributor with sump
Deck type liquid distributor
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|
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>900
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0.75 - 5
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Low - medium
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<10:1
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Trough type liquid distributor with parting box
Deck type liquid distributor with orifices on drip tubes
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5 - 30
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Low - medium
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2:1
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Trough type liquid distributor with sump
Trough type liquid distributor with parting box
Deck type liquid distributor
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|
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>30
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Low - medium
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2:1
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Deck type liquid distributor
Trough type liquid distributor with sump
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1) The liquid distribution should be uniform and have a certain distribution point density. The unevenness of the liquid flow rate should be less than 10%;
2) High operating flexibility, with an elasticity of over 10 * 1 for high elastic liquid distributors;
3) Compact structure, occupying small space in the tower, with large gas flow (≥ 25%);
4) Fully functional, such as liquid collection, distribution, and gas distribution functions;
5) It can be used for liquids containing solid impurities and systems with foam;
6) Low gas resistance and reduced operating pressure;
7) Good mixing performance of liquid concentration and temperature;
8) Anti fog foam and lifting film entrainment;
9) Convenient manufacturing and installation, corrosion resistant;
10) Widely applicable, such as atmospheric and pressurized vacuum operations for distillation, absorption, extraction, and other processes.
In order to improve the uniformity of fluid distribution in the pre distribution pipe of the trough liquid distributor, the uniform opening is changed into two opening modes, namely, non-uniform opening I and non-uniform opening (pressure relief opening) II. With the help of computational fluid dynamics software FLUENT, the k- ε The model numerically simulates and solves its three-dimensional flow field. The analysis shows that changing the diameter of the opening and adding a pressure relief hole results in the most uniform distribution of flow rate, static pressure, and turbulent kinetic energy in each hole, making it suitable for engineering operations.
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