The petrochemical and refining industries utilize water as a critical component. Monitoring and controlling oxidation-reduction potential (ORP or REDOX) throughout multiple stages of the production process is essential. In the petrochemical process, ORP is measured both upstream and downstream. Upstream applications include fracking, drilling, and exploratory operations. Downstream applications include wet gas scrubber, merox (mercaptan removal), and wastewater generated within the plant. In refining, where fuel, lubricants, and other distillate end products are generated, and with an understanding of the measured process sample matrix, ORP measurements can be an effective way for monitoring specific chemicals in a process environment. Sour water stripping, cracker scrubbers, and corrosion control in piping systems are examples where ORP measurement is used for monitoring and control.Read More
Petrochemical and refinery operations are harsh environments which therefore require robust sensor designs. Specialized mechanical insertion assemblies are required to avoid downtime and alleviate safety concerns when maintaining or replacing ORP sensors. The appropriate housing material (Hastelloy, PEEK, Kynar, etc.) is selected based upon the sample matrix and temperature requirements. The reference junction is equally as critical. The Tuff-Tip is a unique design that provides a low profile guard for the ORP element without protruding prongs that accumulate process material or debris. It incorporates a large ceramic or Teflon junction that reduces the chance of process material fouling the porous junction. The Tuff-Tip also aids in keeping the ORP membrane and reference junction clear from coating.