METHOD OF SEPARATING NITROGEN Russian patent published in 2014 - IPC F25J3/02 

Abstract RU 2537110 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of separating C2+-hydrocarbons from a starting fraction primarily containing nitrogen and hydrocarbons. The disclosed method includes: a) the starting fraction is partially condensed and fractionally divided into C2+-hydrocarbon impoverished and rich fractions; b) the C2+-hydrocarbon impoverished fraction is partially condensed and divided into a liquid fraction which forms at least a partially reverse stream for fractional separation, and a C2+-hydrocarbon impoverished gaseous fraction; c) the C2+-hydrocarbon impoverished gaseous fraction is divided in a double-column process into a nitrogen-rich and a methane-rich fraction. The liquid fraction obtained at step (b) is also at least partially fed into the double-column process and divided therein into a nitrogen-rich and a methane-rich fraction.

EFFECT: invention is aimed at improving the efficiency of separating C2+-hydrocarbons.

4 cl, 3 dwg

Similar patents RU2537110C2

Title Year Author Number
REMOVAL OF NITROGEN FROM NATURAL GAS 2011
  • Bauehr Khajnts
  • Shopfer Georg
  • Vitte Jurgen
RU2575337C2
COMBINED SEPARATION OF HEAVY AND LIGHT COMPONENTS FROM NATURAL GAS 2014
  • Bauer Khajnts
  • Valts Khartmut
RU2668053C2
METHOD OF NATURAL GAS LIQUEFACTION WITH BETTER PROPANE EXTRACTION 2008
  • Fisher Beatris
  • Ljuken Ann-Klehr
  • Fershnajder Zhill'
  • Marten P'Er-Iv
  • Pigur'E Zherom
RU2491487C2
METHOD OF LIQUEFACTION OF THE STREAM OF THE NATURAL GAS RICH WITH THE HYDROCARBONS WITH THE SIMULTANEOUS EXTRACTION OF C RICH FRACTION WITH THE HIGH YIELD 2003
  • Bauehr Khajnts
  • Shive Tilo
  • Franke Khubert
  • Zapper Rajner
RU2317497C2
METHOD FOR REMOVING ACID GAS FROM NATURAL GAS 2014
  • Bauer Khajnts
  • Gollvittser Klaudia
RU2671253C2
METHOD OF REVERSING LIQUEFACTION OF THE RICH METHANE OF FRACTION 2013
  • Bauer Khajnts
  • Franke Khubert
  • Bub Andreas
RU2621572C2
METHOD AND DEVICE FOR CRYOGENIC SEPARATION OF GAS MIXTURES 1990
  • Richard Garol'D Makk'Ju
  • Dzhon Lesli Pikering
RU2039329C1
METHOD FOR COMPLEX PROCESSING OF NATURAL HYDROCARBON GAS WITH HIGH NITROGEN CONTENT 2015
  • Mnushkin Igor Anatolevich
  • Erokhin Evgenij Viktorovich
RU2576428C1
METHOD OF PROCESSING NATURAL HYDROCARBON GAS 2015
  • Mnushkin Igor Anatolevich
  • Erokhin Evgenij Viktorovich
RU2580453C1
COMBINED EXTRACTION OF HIGH- AND LOW-BOILING COMPOUNDS FROM NATURAL GAS 2015
  • Bauer Khajnts
  • Valts Khartmut
  • Gvinner Martin
  • Bub Andreas
RU2707777C2

RU 2 537 110 C2

Authors

Bauehr Khajnts

Zapper Rajner

Bub Andreas

Burmberger Shtefan

Dates

2014-12-27Published

2010-08-05Filed