ADSORBENTS WITHOUT BINDING AGENTS AND THEIR USE FOR ADSORPTION SEPARATION OF PARAXYLENE Russian patent published in 2013 - IPC C10G25/03 C01B39/22 C07C15/08 C07C7/13 B01J20/18 

Abstract RU 2497932 C2

FIELD: chemistry.

SUBSTANCE: invention is related to the method of paraxylene separation from the mixture containing at least one different alkylaromatic hydrocarbon C8. At that the method includes contact in absorption conditions of the above mixture and adsorbent without binding agent containing zeolite X and having water content from 3% up to 5.5% by weight for absorption of paraxylene which is transferred to absorbed phase mainly in regard to at least one different alkylaromatic hydrocarbon C8 present in non-absorbent phase; washing of non-absorbent phase from the contact area with adsorbent with receipt of raffinate flow containing at least one different alkylaromatic hydrocarbon C8; desorption of paraxylene in absorbed phase from absorbent with receipt of extract flow containing paraxylene; where absorbent without binding agent does not contain amorphous material or contains amorphous material in quantity less than about 2 % by weight and this amount is defined by X-ray diffraction. This invention is related for adsorbent purposed for use in the above method.

EFFECT: invention allows increasing of paraxylene output.

10 cl, 10 ex, 2 tbl, 9 dwg

Similar patents RU2497932C2

Title Year Author Number
BINDER-FREE ADSORBENTS WITH IMPROVED MASS TRANSFER PROPERTIES AND USE THEREOF IN ADSORPTIVE SEPARATION OF PARA-XYLENE 2009
  • Cheng Linda Shi
  • Kherst Dzhek E.
RU2531917C2
METHOD OF SEPARATING META-XYLENE FROM AROMATIC HYRDOCARBONS AND ADSORBENT FOR ITS REALISATION 2009
  • Kulpratipandzha Santi
  • Frej Stenli Dzh.
  • Uillis Richard R.
  • Najt Lajza M.
RU2490245C2
ALUMOSILICATE ZEOLITE COMPOSITIONS OF X TYPE WITH LOW CONTENT OF TYPE LTA ZEOLITE, INCLUDING CONVERTED BINDING AGENT 2012
  • Kherst Dzhehk E.
  • Chehn Linda S.
  • Brouch Robert U.
RU2544673C1
LOW LTA ZEOLITE ALUMINOSILICATE ZEOLITES X 2012
  • Khurst Dzhehk I
  • Chehn Linda S.
  • Brouch Robert U.
RU2554642C2
ZEOLITE ADSORBENTS FREE OF BINDING SUBSTANCE, METHODS OF OBTAINING THEREOF AND METHODS OF ADSORPTION ISOLATION OF PARA-XYLENE FROM MIXED XYLENES BY ZEOLITE ADSORBENTS FREE OF BINDING SUBSTANCE 2010
  • Cheng Linda Shi
  • Khurst Dzhehk I.
RU2540633C2
ZEOLITE ADSORBENTS WITHOUT BINDING AGENT, METHODS OF OBTAINING THEREOF AND ADSORPTION SEPARATION PROCESSES WITH THEREOF APPLICATION 2012
  • Khurst Dzhehk I.
  • Chehn Linda S.
RU2544732C1
METHOD OF SEPARATING P-XYLENES FROM MIXTURE OF C- AND C-AROMATIC HYDROCARBONS AND DEVICE FOR ITS REALISATION 2009
  • Bresler Leonid
  • Frej Stenli Dzh.
RU2491322C2
METHOD OF EXTRACTING PARAXYLENE AND METAXYLENE FROM A LIQUID FLOW CONTAINING XYLENE ISOMERS AND ETHYLBENZENE 0
  • Donald Bedoz Brougton
SU1544174A3
0
  • Richard Vilyam Niyuzil
SU489303A3
AGGLOMERATED ZEOLITE ADSORBENTS, METHOD OF MAKING SAID SORBENTS AND USE THEREOF 2008
  • Buv'E Ljudivin
  • K'Ezhe Stefan
  • Larosh Katrin
  • Leflev Filiber
  • Frizing Tom
RU2451543C2

RU 2 497 932 C2

Authors

Pregnits Dzhejms U.

Dzhonson Dehrril M.

Cheng Linda Shi

Kommisaris Skott E.

Kherst Dzhek E.

Kvik Majkl G.

Kulpratipandzha Santi

Dates

2013-11-10Published

2009-06-17Filed