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
Authors
Dates
2013-11-10—Published
2009-06-17—Filed