I can't directly provide or send PDF files, but I can describe the typical process flow diagram (PFD) for a lube oil blending plant (LOBP) in detail. You can then use this to create your own diagram or search for a PDF.
A Process Flow Diagram is a schematic representation of the sequence of equipment, piping, and control loops. For a lube oil blending plant, a PFD typically uses standardized symbols (pumps, tanks, mixers, filters, valves) to show material flow. lube oil blending plant process flow diagram pdf