Bubblepoint method, multicomponent

Bubblepoint method, multicomponent distillation, 408 algorithm flowsketch, 406 Bucket elevators, 78, 86 Butadiene solubility, 420... 

Multicomponent distillation, 393 absorption factor method, 398 azeotropic, 420-426 bubblepoint (BP) method, 406-409 computer program references. 404 concentration profiles, 394 distribution of non-kevs. 395 Edmister method, 398,399 extractive, 412, 417-422 feed tray location, 397 free variables, number of 395 Lewis-Matheson method 404 MESH eauations. 405-407 molecular, 425-427 nomenclature, 405 number of theoretical trays, 397 packed towers, 433-439 petroleum, 411-415 reflux, minimum, 397 reflux, operating, 397 SC (simultaneous correction) method, 408-411... 

The stability concept is also useful in establishing the maximum supersaturation that can occur for both pure components and multicomponent mixtures. Suppose we are given a mixture of Ci and nC that has a fixed bubblepoint pressure at a given temperature. If the pressure of this mixture at the given temperature is lowered from a pressure above to a pressure below the bubblepoint, the gas phase may not appear if the pressure reduction is carried out rapidly. However, there is a theoretical limit for the pressure at which the gas phase will appear no matter how fast is the pressure reduction. This maximum supersaturation can be calculated from the stability limit to be discussed in this chapter. In the last part of this chapter, we will present methods that can be used in calculating the critical point of complex... 

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