Method and apparatus for the low-temperature fractionation of a fluid mixture

US9527002B2 · kind B2 · utility

Assignee

• Linde GmbH · DE

Inventors

• Horst Rudiger · Augsburg, DE
• Robert Eckl
• Christoph Windmeier · Geretsried, DE
• Alexander Beimler · Munich, DE
• Yonggui Yu · Freising, DE

Key dates

• Filing date: Aug 2, 2012
• Grant date: Dec 27, 2016
• Expiry date: Jan 14, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25J2290/44
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The method and the apparatus are used for the low-temperature fractionation of a fluid mixture. The fluid mixture is introduced into a separation column. At least a portion of the sump liquid from the separation column is introduced into a sump evaporator and at least partly evaporated there. At least a portion of the vapor produced in the sump evaporator is led back into a lower section of the separation column. A top product is removed at the top of the separation column, and a sump product is removed from the sump of the separation column or from the sump evaporator. The sump evaporator is operated by means of inductive heating.