Schematic process flow diagram of the processes used in a typical oil refinery.
<ul><li><a href="//commons.wikimedia.org/wiki/File:RefineryFlow.png" title="File:RefineryFlow.png">File:RefineryFlow.png</a>: <a href="//commons.wikimedia.org/wiki/User:Mbeychok" title="User:Mbeychok">Mbeychok</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Begoon" title="User:Begoon">Begoon</a></li></ul>
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