Cast and special alloy materials.
Acid Distributor Types Supplied by Begg Cousland Envirotec :
Material Options : Cast Iron / Mondi / SX Alloy
Generally they will have one or more main header pipes, with smaller pipes or branch arms configured to cover the tower’s cross section area.
Branches are generally flanged or in some cases use a threaded coupling. This facilitates dismantling and cleaning during maintenance operations. Holes or nozzles in the pipes allow the liquid to be distributed into the tower
Typically they are designed for 40 to 44 drip points / m2
Cheap / inexpensive
Easy to install
Not so critical for levelling
These Pipe Types rely on high pressure to achieve uniform liquid distribution.The high pressure results in relatively high exit velocity through the pipe holes.This can cause a lot of splashing and entrainment of droplets with the exiting gas, but the use of more saddles to a sufficient height can control most of that effect.
This is a more advanced design than (A), with the holes on the upper side of the pipes. The liquid sprays upwards and contacts a horizontal plate for steel type and an acid proof brick for the cast iron type. As the liquid impinges on the contact surface of the plate or brick, it is re-directed downwards in a fan pattern. The dissipated liquid falls fairly gently onto the tower packing with minimal splashing
Material : SX Alloy or similar
With down-comer pipes
This has a large number of downcomers made of metal tubes with oval slots near the top to
distribute the acid evenly. The feed pipe system needs to provide uniform liquid flow to each trough
and the troughs need to be installed absolutely level.
Typically they are designed for 40 to 44 drip points / m2.
Highly corossion resistant
Very uniform acid distribution
Easier to maintain