Description
Liquid Distributer
Proper distribution of liquid at the top of the packing is essential for satisfactory performance of the packed tower. It is important to distribute the liquid flow equally across the column area in order to secure an intensive mass transfer between the phases. Chemdist offers a wide range of liquid distributors for different applications.
1.1 Channel Type
Liquid is fed into large central channel then distributed through the holes in each channel on the packing. This is used for up to 1500 mm column dia. It can be supplied in single piece or segmented form.
1.2 Spalsh plate distributor
The feed liquid is pre-distributed at a precisely controlled rate from a main channel (mounted above) into the individual arm channels. Anti-plugging, due to large holes and the lateral discharge of liquid. It is suitable for dia. more than 800 mm.
1.3 Trough distributor
It has through type and through-pan type, which is widely used in the heavy liquid and gas load, high viscosity liquid and liquid with suspended solid. This is designed for column dia. 100 mm or above.
1.4 Pipe-arm distributor
Pipe distributor is be used only for clean service. Single row or double row perforated pipes will evenly distributed the liquid to the packing bed through perforated holes under the pipe. The Pipe-Arm distributor is designed for column ID above 400 mm.
1.5 Spray Distributor
It is used where the complete vetting of packing bed is necessary and generally used in scrubbers, in the wash and circulating reflux. The distributor is designed to create overlapping circles of liquid, which ensures that the entire area below the distributor is covered in liquid. This distributor consists of a main header and laterals with downpipes and spray nozzles.
1.6 Pan Type distributor
Pan type liquid distributors consist of a perforated deck with holes or drip tubes for the liquid and round or rectangular risers for the vapour. This is most conventional type that allow gas to pass the plate through risers while liquid flows through opening in the floor. This is not recommended for fouling applications.
Liquid Collector
liquid collector are mainly used to collect liquid from above packing bed and ensure uniform vapour distribution.it can be designed for total as well as partial draw off. Open area, allowable pressure drop, height of collector, liquid & vapour loads, column diameter and quantity of Liquid draw-off are the main parameters in collector design.
2.1 Flange type collector
It is sandwich between the body flanges & it is used in for small column Diameter.
2.2 Vane type liquid collector
The vane blades collect the overhead liquid and direct it into an annular ring, which may then be drawn from the tower or fed to a distributor below. The ring is welded to tower walls. The pressure drop is almost negligible.
2.3 Chimney type collector
In chimney type collector, the gas flow is distributed evenly by means of covered chimneys while downcoming liquid is collected and drawn off through a shaft or pipe. This is used as a liquid collector as well as collector cum distributor. The pressure loss through this type of collector can be relatively high.
Packing Support
The purpose of the support plate is to retain packings without excessive restriction to gas and liquid flow, it also serves to distribute both streams.
3.1 Grid support
Support grids which are designed to provide sufficient strength to support packed beds under normal operating conditions without creating any capacity restriction in the column. Packing support grids promotes High efficiency gas & liquid circulation while reducing the risk of liquid flooding across a system.
3.2 Multibeam support
The multi-beam packing support is regarded as one of the best random packing support grids. It is having excellent stiffness having high loading capacity to bear extremely high pressure from packing & flowing liquids. Structure of multi-beam packing can help to enlarge open area.it is used in large diameter & heavy duty distillation column.
