Stream process models, refinement

The use of linear programming to optimize the flow of process streams through a petroleum refinery began in the mid-1950 s (Symonds, 1955 Manne, 1956). Now, almost twenty-five years later, it is safe to say that one half of U.S. refining capacity is represented by linear programming or LP models which are routinely optimized to schedule operations, evaluate feedstocks, and study new process configurations. 

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