Achieve More Productivity with OPTIMASS - Krohne

Coriolis Mass Flow
Application Story - Liquefied gas measurement in UK
Specialist chemical manufacturer
F2 Chemicals Ltd has installed
KROHNE’s OPTIMASS 8000
Coriolis mass flowmeter to
improve the reliability of liquefied
gas flow measurement at its plant
in Lancashire.
The liquefied gas is distilled into several fractions which are used as active
ingredients in pharmaceutical products. It was essential that F2 Chemicals
found a way to measure the flow of the liquid reliably to ensure the
consistent, high quality of its products.
The measurement technology F2 Chemicals previously used to measure
the flow of liquefied perfluorobutane and acetone did not provide the
reliability which was critical for F2’s process.
Perfluorobutane and acetone are contained in 100 litre industrial cylinders and are
charged into the distillation column and refluxed through the OPTIMASS Coriolis
mass flowmeter at flow rates of between 40 and 200 kg/hour and at pressures of
between 2 and 7 bar. The temperature of the liquefied gas varies between -5°C
and +15°C. A 20 mA signal is taken from the OPTIMASS and fed into a DCS.
The reading is manually monitored and the distillation
process adjusted according to temperature.
Measurement reliability improved significantly since the
KROHNE OPTIMASS 8000 Coriolis mass flowmeter was installed.
STRAIGHT TALK
F2 Chemicals installed
KROHNE’s OPTIMASS 8000
Coriolis mass flowmeter
because of its ability to
measure liquefied gas
reliably and accurately at low
temperatures. Its twin “u”
shaped measuring tubes
provide excellent signal-tonoise
ratio and measurement
turndown. This was
important considering the low
pressures of the gas being
measured.
Copyright KROHNE, inc. , 2009 OPTIMASS Applications Page No.26