Use as a qualitative system explanation, not a deterministic prediction from height or pure-component boiling points. Individual congener behavior depends on the changing mixture, reflux, heat input and collection. Adjacent fruit-spirit examples show methanol across multiple fractions. Historical equipment claims and numerical operating recipes require separate verification.
The discussion compares pot, batch-column, and continuous-column separation and notes that all batch systems require management of heads and tails.
The chapter describes neck and lyne-arm dimensions as influences on natural reflux in pot stills and explains staged vapor-liquid contact and adjustable reflux in batch-column systems. It associates greater reflux with a generally lighter spirit, while actual separation depends on the apparatus and operating conditions.
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Chapter 3.1, §3.1.2, Batch Distillation
Fresh sequential chapter3.1 review completed PDF474–485 including all six figures. Locator printed462–463/PDF479–480 checked; section corrected from3.1.4 to3.1.2. Paraphrase narrowed to avoid universal high-boiling/low-boiling cut rule. September 28 fresh review now covers all 1185 supplied sheets, including references, appendices, glossary, index and back cover, with443 detail-page inspections. Full reading does not upgrade this secondary passage into independent primary validation.
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