PFDs frequently show shell-and-tube or plate heat exchangers placed before the blending vessels.
Base oils and additives are metered into a blending kettle equipped with an agitator or a jet mixer. The mixture is often heated to to ensure a homogenous mix. lube oil blending plant process flow diagram pdf
Precise, automated metering is critical for high-quality lubricants. PFDs frequently show shell-and-tube or plate heat exchangers
+---------------+ | Base Oil | | Storage | +---------------+ | | v +---------------+ | Additive | | Storage | +---------------+ | | v +---------------+ | Blending | | (Base Oil + | | Additives) | +---------------+ | | v +---------------+ | Heating and | | Mixing | +---------------+ | | v +---------------+ | Filtration | +---------------+ | | v +---------------+ | Quality | | Control | +---------------+ | | v +---------------+ | Filling and | | Packaging | +---------------+ lube oil blending plant process flow diagram pdf
A detailed PFD for a lube oil blending plant typically outlines the major stages: