Please note: All presented publications are protected by copyright and may not be used - even partly - without the written approval of WelChem GmbH.
How to... Sieve Trays
How to design and optimize Sieve Trays
Sieve trays have been used for about a hundred years and are therefore one of the best studied tray type. They can be easily adapted to different design scenarios (flow rates) using different perforations, they do not require any special tool in production and thus are inexpensive to manufacture.
How to... Bubble Cap Tray
How to design and optimize Bubble Cap Trays
Bubble Cap trays have been used for about 80 years in technical applications and are a very well studied tray type. Nowadays, they are mainly used for handling low liquid loads, as for this field of application there are only few alternatives!
How to... Float Valve Trays
How to design and optimize Float Valve Trays
Float Valve Trays (also called movable valve trays or ballast trays) are the most flexible tray type among the standard trays. They have been used for about 80 years in technical applications, they are well studied and they are still the mainly used tray type in towers.
How to... Fixed Valve Trays
How to design and optimize Fixed Valve Trays
Fixed Valve trays were first published and patented by Nutter in 1967. After some improvements in scale and development of NC-machinery, they gained technical relevance in the 1990s. Therefore they are the most recent, technical relevant development in contact elements of trays.
How to... Downcomers
All about Downcomers and Weirs
To understand all the complexity of trays, it is necessary to get an overview of the various shapes and layouts of downcomers.