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A consecutive chemical reactionA  ⇔  B  ⇔  C   $$A \Leftrightarrow B \Leftrightarrow C$$    is studied in this paper. The optimal concentration configuration of the reaction for minimum entropy generation with fixed yield of aimed productB   $$B$$    is derived. The optimal concentration configuration with different initial conditions and the optimal initial concentrationC   C  0,  o  p  t$${C_{C0}}_{{\rm{, opt}}}$$    of the by-productC   $$C$$    are obtained numerically. Compared with the control method that the concentration ofA   $$A$$    increases linearly, the entropy production is reduced by more than 90 %. The minimum entropy generation and optimal configuration of elementary reactionA  ⇔  B   $$A \Leftrightarrow B$$    are studied by using variational method and nonlinear programming method. The validity of the nonlinear programming method is verified. The reaction rate of elementary reactionA  ⇔  B   $$A \Leftrightarrow B$$    is in proportion to the square root of the concentration ofA   $$A$$    when entropy generation of the reaction process is minimum. The results obtained can help one to find the realizable regimes for a chemical reactor.

Optimal Concentration Configuration of Consecutive Chemical Reaction A ⇔ B ⇔ C for Minimum Entropy Generation