Application Note: Optimized Control of Sour Water in Petrochemical Applications - METTLER TOLEDO

Application Note: Optimized Control of Sour Water in Petrochemical Applications

Application Note - Control of sour water without damaging the pH electrode

Process Analytics - «Application Note»

The installation of a double measuring system – pH combined with conductivity – allows to control the aggressive sour water on-line without damaging the pH electrodes.

Sour water damages cause corrosion 
Sour water is poisonous to petrochemical plants equipment, because it is responsible for most of any corrosion process in metallic pipes, heater, coolers and columns and it must be treated and neutralized. 

An unsatisfying situation
In the past, customers used standard pH measuring systems to control the sour water and the neutralization treatment. The situation was not satisfying at all because of the contamination of the electrode due to the presence of gasoline, which also passes through the pipe. As the pH electrodes were constantly damaged by the presence of gasoline in the measurement media, customers stopped performing the on-line analysis and started conducting it in the laboratory… 

Please open the below pdf-file to read the entire «Application Note»!

Thank you for visiting We have tried to optimize your experience while on the site, but we noticed that you are using an older version of a web browser. We would like to let you know that some features on the site may not be available or may not work as nicely as they would on a newer browser version. If you would like to take full advantage of the site, please update your web browser to help improve your experience while browsing