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Amarinth delivers innovative variable speed pumps into Axsia nutshell filters for Sonatrac

09 October 2006

Algerian fuel manufacturing company, Sonatrac, has commissioned two new
Axsia Nutshell Filters at its Birbirkine site in Algeria. These are the
first Axsia filters to incorporate an ingenious new variable speed pump
designed by Amarinth.

Axsia, a subsidiary of the NATCO Group, supplies the European market with
the NATCO PowerClean system. Nutshell filters are an extremely efficient way
of treating oily water produced during the processing of oil and gas. The
success of the filter however relies heavily on the design and operation of
the pump to circulate the nutshell fibrous media without damaging it during
the backwash process.

In order to support its European market, Axsia required a local pump partner
and selected Amarinth to produce a pump system for this challenging task.
Amarinth designed an elegant, compact and reliable variable speed pump
system by modifying one of its proven heavy duty pumps to suit the specific
operating conditions. Materials were chosen that could survive in a sour
service environment containing hydrogen sulphide.

Pump speed is crucial to the process of releasing the oil effectively. A
change of just 100rpm makes a significant difference. Amarinth chose to use
its innovative variable speed control system to govern the pump speed. This
produced a compact and uncomplicated system where the optimum speed can be
easily selected. The result is a significant decrease in overall
commissioning and process optimisation time over traditional complex belt
drive systems.

Mr Andrew Hamilton, Proposals Manager at Axsia commented: "Finding a
reliable and supportive supplier for the recirculator pumps was the key to
producing the Nutshell Filters here in the UK. Amarinth listened to our
requirements and came up some great ideas. They worked closely with us to
create a very elegant solution."

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