FIELD: chemistry.
SUBSTANCE: one of method versions includes stages: (a) contacting at practically not reducing general pressure of gaseous mixture, containing xylol isomers, ethylbenzol and unadsorbable gas, with adsorbent, selective to paraxylol, which contains zeolite with pores of average size, in order to obtain paraxylol-depleted raffinate and effluent after desorption, containing product, enriched with paraxylol; unadsorbable gas contains hydrogen and does not react with xylol isomers and ethylbenzol; and (b) isomerisation of at least part of paraxylol-depleted raffinate. Stage of contacting is carried out in such way as to avoid necessity to subject raffinate to compressing before isomerisation, profitably eliminating expensive stages of compression.
EFFECT: improving method of obtaining paraxylol from xylol isomer mixture.
21 cl, 4 ex, 7 tbl, 7 dwg
