Process Units

A refinery is composed ofa number ofdifferent process units for separating and transforming crude oil into products. Any refinery may be configured with a certain combination of some of these process units and this arrangement may vary significantly between refineries. These units can be classified according to

Figure 9.1 Simplified refinery flowchart.

whether they perform physical or chemical processes. Here they are nominated transformation and separation units. Figure 9.1 shows an almost complete refinery flowchart addressing all process steps that are described in the following section.

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