Reaction, Separation and Recycle Systems for Batch Processes

Reaction, Separation and Recycle Systems for Batch Processes... 

The normal boiling points of the materials are given in Table 4.6. Synthesize a continuous reaction, separation, and recycle system for the process, bearing in mind that the process will later become batch. 

In the earlier illustration, raw alkylate is fed to the first tower wherein the excess phenol is removed overhead for recycling to the reaction system. The by-products that are less volatile than phenol, but more volatile than the desired product (e.g., separation of the ortho-substituted isomer from the para), are removed as overhead from the second tower. The product is then removed as overhead from the third tower whereas less volatile by-products (e.g., di-substituted by-product and other by-products formed from the oligomerization of the alkene and subsequent alkylation with phenol) are removed as tower bottoms. A batch distillation of raw alkylate is similar in processing sequence with the various separations described earlier, which are taken as separate cuts. ... 

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