US 9,527,002 B2 · Method and apparatus for the low-temperature fractionation of a fluid mixture

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.

Claims19

Dependent claims

A method for low-temperature fractionation of a fluid mixture comprising:

introducing said fluid mixture into a separation column to produce a top gaseous product and a bottom liquid,
introducing at least part of said bottom liquid into a bottom evaporator wherein said bottom liquid is at least partially evaporated in said bottom evaporator to form a vapor,
returning at least part of said vapor generated in the bottom evaporator to a lower portion of said separation column,
removing said top gaseous product from the top of said separation column, and
removing a bottom product from the bottom of said separation column or from said bottom evaporator,
wherein said bottom evaporator is heated by inductive heating.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/240,565Filed 2 Aug 2012

Priority

DE 10 2011 111 63025 Aug 2011

Published

US 2015/0121954 A17 May 2015

Granted

27 Dec 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

B01D 1/0023
Use of electrical or wave energy: induction heating
B01D 3/322
Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30: reboiler…
F25J 3/04745
Recovering noble gases from air: krypton and/or Xenon
F25J 3/04751
Krypton and/or Xenon: producing pure krypton and/or xenon recovered from a crude krypton/xenon mixture

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

Life of this patent

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

Life of this patent

Abstract

Claims19