Crude Oil Refining Process Design

Pour point

Pour point of a liquid can be defined as the lowest temperature at which the liquid begins to flow or can be poured. Alternatively, it is the minimum temperature, below which the liquid will seize to flow. This term is usually used for crude oils and is a rough estimation of temperature range when the oil becomes pumpable.

But considering pour point alone, as indication of fluidity can be misleading. Thermal history of the liquid also plays important role in determining fluidity of a liquid. Upper and lower pour points may sometimes be specified to indicate a temperature window within which the fluid will start to flow.

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