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A column still, also called a continuous still, patent still or Coffey still, is a variety of still consisting of two columns. Column stills can produce rectified spirit (95% ABV ). Description
The result was more efficient, producing a lighter spirit at higher alcohol content. Coffey patented his design in 1830, and it became the basis for every column still used ever since. His column still became widely popular in Scotland and the rest of the world outside Ireland, where it is known as the "Coffey still" or "Patent Still".
During first distillation, the pot still (or "wash still") is filled about two-thirds full of a fermented liquid (or wash) with an alcohol content of about 7–12%. [4] [5] [6] In the case of whiskey distillation, the liquid used is a beer, while in the case of brandy production, it is a base wine. The pot still is then heated so that the ...
The simplest standard distillation apparatus is commonly known as a pot still, consisting of a single heated chamber and a vessel to collect purified alcohol. A pot still incorporates only one condensation, whereas other types of distillation equipment have multiple stages which result in higher purification of the more volatile component ...
Distillation, also classical distillation, is the process of separating the component substances of a liquid mixture of two or more chemically discrete substances; the separation process is realized by way of the selective boiling of the mixture and the condensation of the vapors in a still. Dry distillation (thermolysis and pyrolysis) is the ...
Before the 19th century most distillation was performed from a simple pot still developed in 800 AD by the Arab alchemist Jabir ibn Hayyan. In the early 19th century the advent of steam heating and later the continuous "patent" still radically transformed the spirits industry. Smaller traditional producers developed marketing strategies to ...
Average mortgage rates are edging down moderately week over week of Monday, January 6, 2024, though remain at elevated levels for benchmark 30-year and 15-year fixed terms, this despite three back ...
His patent, the Coffey still, was a continuous distillation apparatus which offered an improvement on the traditional pot still. Although similar continuous stills had been proposed in the past, including by other Irish distillers themselves, the Coffey still was the most effective, and soon entered widespread use.