Phase diagram for the reactive flash model

Compared to the reference case (c/. figure 7.7), the feasibility boundaries exhibit different shapes and are located at lower values of the heat input q. This last situation is justified by the fact that as more heat is generated by the reaction, less heat has to be added to the system to vaporize the entire feed (/=0), or to generate vapors from a given feed (u=0). Furthermore, the above-mentioned limiting cases (i.e. Oq = 0 and Oq = A) are recognized. 

In figure 7.9 the loci of codimension-1 points are depicted in the f q space. As the heat of reaction is increased, the cusp point H crosses the /-boundary at a codimension-3 point and moves into the unfeasible region. Although the area between the loci of 

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Figure 7.6. Phase diagram for the reactive flash model. Remcirk numbers...

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