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

Abstract RU 2524312 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of removing a fraction with high nitrogen content from a starting fraction primarily containing nitrogen and hydrocarbons. The starting fraction is partially condensed and divided by fractionation into a fraction with high nitrogen content and a fraction with high methane content. According to the invention, during cut-off of the supply of the starting fraction being fed for fractionation, the separation column(s) (T1/T2) and heat exchangers (E2) serving for partial condensation (E1) of the starting fraction and cooling and heating process streams formed during fractionation are kept, through one or more different coolants (6-11), at temperature levels substantially corresponding to temperature levels during the normal operating mode of the separation column(s) T1/T2) and heat exchangers (E1, E2).

EFFECT: improved method.

2 cl, 4 dwg

Similar patents RU2524312C2

Title Year Author Number
EXTRACTION OF NITROGEN FROM NATURAL GAS 2011
  • Bauehr Khajnts
  • Gvinner Martin
  • Garte Daniehl'
RU2559413C2
METHOD OF NITROGEN REMOVAL 2009
  • Bauehr Khajnts
  • Gvinner Martin
RU2514804C2
METHOD OF NITROGEN REMOVAL 2009
  • Bauehr Khajnts
  • Zapper Rajner
  • Gvinner Martin
  • Shopfer Georg
RU2537326C2
METHOD FOR LIQUEFACTION OF NITROGEN-CONTAINING FEED FRACTION ENRICHED WITH HYDROCARBONS, PREFERABLY NATURAL GAS FRACTION 2010
  • Bauehr Khajnts
  • Zapper Rajner
  • Shmidt Mattias
  • Vitte Jurgen
RU2537486C2
COMBINED EXTRACTION OF HIGH- AND LOW-BOILING COMPOUNDS FROM NATURAL GAS 2015
  • Bauer Khajnts
  • Valts Khartmut
  • Gvinner Martin
  • Bub Andreas
RU2707777C2
METHOD AND APPARATUS FOR PRODUCING GASEOUS PRODUCTS AND LIQUEFIED METHANE FROM SYNTHETIC GAS 2008
  • Lang Martin
RU2456517C2
METHOD OF LIQUIDISING FLOW WITH HIGH CONTENT OF HYDROCARBONS 2010
  • Bauehr Khajnts
  • Zapper Rajner
  • Garte Daniehl'
RU2537480C2
METHOD FOR COMPLEX EXTRACTION OF VALUABLE ADMIXTURES FROM NATURAL HELIUM-CONTAINING HYDROCARBON GAS WITH HIGH NITROGEN CONTENT 2014
  • Mnushkin Igor Anatolevich
RU2597081C2
METHOD FOR LIQUEFYING A NATURAL GAS STREAM CONTAINING NITROGEN 2018
  • Paradovski, Anri
  • Likhtle, Sebasten
  • Myur, Mari
RU2797474C2
TWO-STEP REMOVAL OF NITROGEN FROM LIQUEFIED NATURAL GAS 2006
  • Spilsberi Kristofer Dzheffri
RU2355960C1

RU 2 524 312 C2

Authors

Zapper Rajner

Shopfer Georg

Garte Daniehl'

Shel' Arndt-Ehrik

Dates

2014-07-27Published

2010-02-02Filed