pH Measurement in Amine-Based Quench Water - METTLER TOLEDO
Application Editorial

pH Measurement in Amine-Based Quench Water

Application Editorial
Application Note - pH Measurement
Process Analytics - «Application Note»

For example, in the production of ethylene, ethane feedstock is cracked at high temperatures. The cracked ethylene mixture is cooled by direct quenching with water which is recirculated (Fig. 1). The condensed hydrocarbons and water are separated in an oil water separator at the bottom. To control the separation and to minimize corrosion, it is important to maintain the right pH level. Therefore neutralizing agents are injected in the system. These neutralizing agents are usually amines (such as diethanol amine DEA).

Via in-situ pH measurement, the amine feed is automated. Temperatures at the bottom of the quench tower of more than 80°C and heavy contamination with emulsified oil, make this application a real challenge........

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