Benefits of a Liquid Distributor
- Uniform liquid distribution over the packed bed and structured packing.
- Resistance to plugging or fouling.
- Low vapor phase pressure drop.
- Proper operation through their turndown range.
- Mixing capability for redistribution to the next bed.
- Minimum liquid resistance time.
The Different Types of Liquid Distributors
- Gravity distributors: These are capable of handling large liquid flow rates and have a high turndown ratio. Although efficient, they are sensitive to internal liquid hydraulics and contain a limited amount of drip points. They can be further divided into orifice plate distributors and trough type distributors.
- Pressure distributors: Less expensive than gravity distributors, pressure distributors feature more room for vapor flow and require smaller lead-up piping. However, given that the quality of distribution is less and there is a greater potential for corrosion, their operating costs prove ultimately higher than gravity distributors. Pressure distributors can be further divided into spray nozzle and ladder-type distributors.
Gravity Liquid Distributors
Drip-Tube liquid distributors are similar to orifice-pan liquid distributors, except drip-tubes are used in place of some or all of the plate orifices. This modification allows drip-tube distributors to accommodate fouling applications. When used for fouling applications, the solids settle on the deck and the liquid flows through the tubes. Turndown ratios of 10:1 are realistic.
Pressure Liquid Distributors
While you only ever need one liquid distributor per tower, the type of liquid distributor will depend on the application.
Benefits of Working With MACH Engineering for Your Liquid Distributor Needs
Once we have the exact specifications, we design your liquid distributor and run process simulations both before and after selecting the tower internals. Please contact us for more information.