Feasible product

Sy.stem visualization. Location of distillation boundaries, azeotropes, distillation regions, feasible products, and liquid-hquid regions. 

In general, if K is a very small number, the equilibrium mixture will contain mostly unreacted starting materials for all practical purposes, the forward reaction does not go. Conversely, a large K implies a reaction that, at least in principle, is feasible products should be formed in high yield. Frequently, K has an intermediate value, in which case you must make quantitative calculations concerning the direction or extent of reaction. 

Although there is no limit theoretically to the shapes that can be created, practical considerations must be met. These relate not only to product design but also to mold or die design, since these must be considered one entity in the total creation of a usable, economically feasible product. In the sections that follow, various phases considered important in the creation of such products are examined for their contribution to and effect on design and function. 

Below, the procedure for the determination of dominant campaigns in a version that was proposed by Lazaro et al. (1989) is outlined. Their methodology includes enumeration of feasible production sequences, selection of dominant production lines, task sequencing, and search for an optimum with constraints. All possible production variants are generated by an enumeration procedure that takes into account the possibility of available equipment working in parallel, initial and final task overlapping, and instability of intermediate products. Non-feasible sequences are eliminated so that only favourable candidates are subjected to full evaluation. Dominant production lines are selected by maximizing the criterion ... 

The starting hydroxynorbomene, 4, contains 22 bonds, of which 18 are constitutionally distinct. There are therefore 36 distinct single bond heterolyses. Application of RG22 to all possible bond combinations leads to at least 864 possible reactions 68). RG33 can give t least 10,000 possible reactions 68). Thus, to summarize, EROS s evaluations not only reduce a totally intractable number of formal possibilities to five feasible products, it also suggests, correctly, which of these are the most likely. 

Feasible production plan for a two-shift operation with 16h available production time. 

In case of allocation conflicts one has to choose a different time, a different structural variant (production version) or even both. The process of creating feasible production plans is denoted as scheduling. To support the solution of scheduling problems, a scheduling system is used. 

Saito K, Sudo H, Yamazaki M, Koseki-Nakamura M, Kitajima M, Takayama H, Aimi N. (2001) Feasible production of camptothecin by hairy root culture of Ophiorrhiza pumila. Plant Cell Rep 20 261-21. ... 

In some cases, product mix-dependent effects might have to be considered. For example, only a subset of the products requires processing step t5. Reflecting this fact, the installed capacity of the equipment used for t5 was found to be less than the overall plant capacity at most plants. In situations like these, an additional capacity restriction is required to ensure that only feasible product-plant allocations are proposed by the model. If task t5 requires substantial resources such as dedicated equipments or personnel, the model has to be further extended to explicitly model this resource and the costs associated with its utilization based on the production volumes allocated to the respective plant. 

Thermodynamic and Kinetic Effects on the Feasible Products of Reactive Distillation A-zeo-tropes and A-rheo-tropes... 

In correspondence to the just-given introduction to the state of the art of feasible product analysis of reactive distillation and reactive membrane separation processes, the following three major sections of this chapter are structured as follows ... 

Section 4.2 is focused on phase equilibrium-controlled vapor-liquid systems with kinetically or equihbrium-controlled chemical reactions. The feasible products are kinetic azeotropes or reactive azeotropes, respectively. 

Section 4.3 elucidates the role of vapor-liquid mass transfer resistances on the feasible products of nonreactive or reactive separation processes. The latter are considered under chemical equilibrium conditions (i.e., they are very fast reactions). The feasible products are denoted as arheotropes. 

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