Case study: SCR catalyst plugging
Hydrogen (H2) reforming is a process to produce H2 from a compound composed of H2 atoms. A convection pass is used to heat the process during reforming, which creates nitrogen oxides (NOx). The NOx-rich flue gas passes through a selective catalytic reduction (SCR) reactor before being exhausted into the atmosphere.
Hydroprocessing catalyst reload and restart best practices—Part 2
Hydroprocessing (hydrotreating and hydrocracking) units are high-pressure, high-temperature units that have multiple reactors, multiple beds per reactor and specialized metallurgy. Catalysts in these units are replaced on a 2 yr–5 yr cycle, depending on feed quality, unit design, catalyst selection, operational constraints and performance.