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US 6,554,965 B1Granted
Rectification column for isolating pure substances from high boiling air-and/or temperature sensitive substances
AssigneeBASF SE
InventorsHorst Hartmann, Wolfram Burst, Wulf Kaiser, Harald Laas, Paul Grafen, Bernhard Bockstiegel, Kai-Uwe Baldenius
Life of this patent
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Abstract
A reflection column which contains liquid distributors having at least 500 drip points/m2, which are arranged at an angle of about 90° C. to cloth layers of packing elements located immediately therebelow; and a combination of insulation and protective heating. The column is advantageously used for the rectification of mixtures of high-boiling air- or temperature-sensitive substances requiring effective separation efficiency.
Claims9
A rectification column which comprises:
- a) channel liquid distributors with at least 500 drip points/m2 as liquid distributors;
- b) the channel liquid distributors being arranged at an angle of about 90° C. to cloth layers of packing elements located immediately below the channel liquid distributors;
- c) 2 or more of the packing elements immediately below the channel liquid distributors which have a height of from 20 to 100 mm and whose cloth layers are in each case rotated by 90° with respect to one another;
- d) a combination of insulation and a protective heating, which ensures that virtually no heat loss through the column wall occurs during rectification;
- and
- e) seals and flanges which are designed to virtually exclude air in the rectification column.
3 more elements
Dependencies are inferred from the claim text.