Rotating Cylinder Vs. Loop testing of inhibitors for CO2 Corrosion.
|S.Nesic, G. T. Solvi and S. Skjerve.|
A study was carried out to investigate the effect of various hydrodynamic
parameters on the corrosion rate of low carbon steel in CO2 environments
in the presence of inhibitors. Two different flow geometries: rotating
cylinder and pipe flow were studied simultaneously in the same electrolyte
within a glas loop. The comparisons were carried out at room temperature,
pH 4-6, pCO2=1 bar, V=0-13 m/s.the hydrodynamic conditions studied cover
the range from static to highly turbulent flow.The corrosion process
was monitored with the following electrochemical measuring impedance.
The comparison of the two flow geaometries was carried out in terms
of hydrodynamics, mass transfer and CO2 corrosion.