Broadens definition of injection points from points for injection of chemical additives to process tie-ins where there is a significant potential for degradation of equipment integrity due to operation of the injection. Defines key process parameters to consider in designing injection points to accomplish their purpose without compromising integrity of injection and related process equipment. Discusses fluid mechanics concepts of mixing, contacting and wetting as related to process injections. Relates potential degradation of injection equipment by corrosion, erosion, erosion-corrosion and fatigue to injection process variables. Discusses design, location and orientation of injection equipment to accomplish specific injection strategies. Lists factors to be considered in materials selection for injection point components.
Keywords: injection point, mixing point, additives, petroleum refining, fluid mechanics, injection quill, sparger, spray nozzle, materials selection