Tower packing is typically used to provide an improved environment for contact between two phases and facilitate mass transfer. In unit operations or gas cleaning applications, mass transfer refers to the net movement of a chemical from one phase to another. This involves the transfer of a gaseous component into a liquid component, or vice versa. Mass transfer is performed in process such as absorption, scrubbing, stripping and distillation.
The most common form of tower packing is referred to as “Dumped” or “Random” packing. These packings consist of a mass of inert solid shapes that are “dumped” in a cylindrical column. This provides greater surface area in a wet packed tower scrubber for gas and liquid to make contact. Structured tower packing is another type of packed tower scrubber which operates in the same manner.
Kimre’s KON-TANE® Scrubber and Tower Packing is a structured, interlaced, monofilament material. It is designed to facilitate the breakup of the liquid phase, creating maximum surface area for mass transfer in the vapor phase. KON-TANE® packing produces low pressure drop, prevents liquid holdup and drastically reduces energy use.
Due to its inherent rigidity and strength, KON-TANE® can be installed in layered pads that are numerous feet/meters deep. The pads maintain structure by using relatively simple supports. The material is flexible enough, that individual layers can be inserted through a manhole. Due to the uniform cross section of the material, channeling at the wall of the vessel and throughout the material is minimized. A droplet falling from one of the cylinders will almost immediately hit the next, this makes renewed liquid surface available for mass transfer.
Unlike conventional packing, KON-TANE® packing can be easily built into cassettes. In case of pluggage, for example by salt crystals, the cassettes can be easily removed for cleaning. KON-TANE® is strong yet flexible, therefore it can be cleaned in various manners; pressure washing, the use of solvents, or even crushing of the media to remove scale are all successful cleaning methods. Shutdowns can often be completely avoided or at worst, are limited to a short duration.
KON-TANE® packings are highly effective and widely used in crossflow or semi-cross flow wet packed tower scrubbers. These packed tower scrubbers typically combine spray and packed bed sections followed by a mist eliminator in a horizontal vessel for maximum separation of soluble gases, particulate matter, and mist particles. These scrubbers are usually classified as medium energy scrubbers and have a pressure drop of 1000-200 mm water gauge depending on the system requirements.
|KON-TANE® Tower Packing Stage being installed in Fluorine Tail Gas Wet Scrubber||KON-TANE® Tower Packing Stage being installed in Hydrochloric Acid Wet Scrubber|
Features and benefits of KON-TANE®
- Highest liquid to gas ratio available
- Lower HTU’s: One 7” stage of KON-TANE® provides up to 3 mass transfer stages
- One-piece construction
- Easy installation
- Maintains uniform volume and flow
- Exceptional transfer in cross-flow scrubbers
- Improve transfer in vertical towers and prevent tower replacement or modification