Distillation: processes – separatory – And recovering heat by indirect heat exchange – Utilizing recovered heat for heating feed
Patent
1984-09-18
1986-05-06
Bascomb, Wilbur
Distillation: processes, separatory
And recovering heat by indirect heat exchange
Utilizing recovered heat for heating feed
203 25, 203 27, 203 74, 203 77, 585808, 585865, B01D 340
Patent
active
045869863
ABSTRACT:
Disclosed is a method for recovering pure aromatic substances from a mixture of hydrocarbons containing both aromatic and non-aromatic fractions. The input mixture is fed through an extractive stage provided with a preliminary distillation column. In the preliminary stage the aromatics-containing product is treated at a pressure up to 20 bar and a temperature up to 300.degree. C. The pressure is adjusted to a value at which the operational temperature of the preliminary stage is higher than the pressure and temperature in the extractive stage and the heat of the vapors discharged from the preliminary stage is used for heating the extractive stage.
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Emmrich Gerd
Preusser Gerhard
Schneider Hans-Christoph
Schulze Martin
Bascomb Wilbur
Krupp-Koppers GmbH
Striker Michael J.
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