PuriTech's IONEX continuous countercurrent ion exchange system offers a
number of advantages over existing technologies.
For instance, by using a multi-port distribution valve and process disc, rigid pipes can be
used between the valve and ion exchange vessels, instead of flexible hoses. Sealing is also greatly
simplified, which means only O-rings and gaskets are required.
In addition, use of the valve means that complex carousel mechanisms
are not required, simplifying installation, commissioning and control
requirements.
Adaptable and versatile [top]
IONEX is also designed to be adaptable and versatile. A number of user functions can be carried
out simultaneously under continuous operating conditions. Easy access to the valve — the system's
only moving part — and the ion exchange vessels, simplifies maintenance procedures.
It is also possible to build compact systems based on the technology. The ion exchange cells
can be positioned in any desired pattern, providing maximum installation flexibility.
Water and resin consumption
Compared with traditional fixed-bed systems, and depending on the application,
IONEX can consume up to 75% less water, while the volume of ion exchange resin
required can be reduced by up to 50%, offering significant savings.
A further comparison with alternative systems shows that a higher separation efficiency and
product concentration can be achieved by using IONEX technology. Countercurrent fluid flow and recycling,
together with uninterrupted process streams, guarantee high levels of recovery.
Lower capital investment [top]
In some applications the capital investment on specific projects can be reduced by 20–40%.
For example, a like-for-like comparison of an IONEX unit and a typical carousel system — both rated at 40 m3/h —
reveals that by using PuriTech's technology the investment cost can be reduced by about 35%.
IONEX is targeted at a diverse range of industries, and plants based on the technology are set to displace
some fixed-bed units, and even other countercurrent systems which are now in use, because they are more cost-effective
and require a smaller investment.
