Pickling, descaling and chemical cleaning are industrial processes in which corrosion inhibitors are generally used. Measurements at different temperatures of: refractive index, density, viscosity, and IR and UV spectra, gas-chromatographic analysis are suggested to characterize inhibitor formulations. To determine the concentration of N-containing organic additives a colorimetric method is proposed. Some examples are given concerning industrial pickling and acid cleaning of internal surfaces of steam generator heat exchanger tubes in thermoelectric units. It is also discussed the possibility to monitor this process by recording electrochemical parameters.
Inhibitors for acid media: pickling processes and chemical cleaning
TRABANELLI, Giordano;ZUCCHI, Fabrizio;FRIGNANI, Alessandro;ZUCCHINI, Massimo;BRUNORO, Giancarlo
1980
Abstract
Pickling, descaling and chemical cleaning are industrial processes in which corrosion inhibitors are generally used. Measurements at different temperatures of: refractive index, density, viscosity, and IR and UV spectra, gas-chromatographic analysis are suggested to characterize inhibitor formulations. To determine the concentration of N-containing organic additives a colorimetric method is proposed. Some examples are given concerning industrial pickling and acid cleaning of internal surfaces of steam generator heat exchanger tubes in thermoelectric units. It is also discussed the possibility to monitor this process by recording electrochemical parameters.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
