In the high-stakes world of hydroprocessing, encompassing hydrotreating, hydrocracking, and hydrodesulfurization, reactor internals such as Johnson scallops and the center pipe are indispensable components. Their precision-engineered design directly influences catalyst usage, pressure drop, and process reliability. ✔ Johnson Scallops Johnson scallops are wedge-wire screen segments ins... https://www.yubofilters.com/news/hydroprocessing-reactor-internals.html