METHOD FOR ALKYLATION OF AROMATIC COMPOUNDS Russian patent published in 2018 - IPC C07C2/66 C07C7/12 C07C15/04 C07C15/85 

FIELD: chemistry.

SUBSTANCE: one embodiment includes: (a) providing an aromatic hydrocarbon feedstock containing alkylated aromatic hydrocarbon of, at least, 150 ppm by weight of water and, at least, one organic nitrogen impurity, wherein alkylated aromatic hydrocarbon is benzene; (b) removing water from the aromatic hydrocarbon feedstock in the dewatering zone to produce an anhydrous starting aromatic feedstock having a water content of not more than 20 ppm by weight; (c) contacting the dewatered raw aromatic feedstock with the adsorbent from the clay under conditions comprising a temperature of less than 130°C, so that the adsorbent removes, at least, a portion of the organic nitrogen impurity contained in the feedstock to produce a treated aromatic feedstock; and (d) feeding the treated aromatic feedstock to the alkylation reaction zone and/or the transalkylation reaction zone.

EFFECT: improving the efficiency of cleaning with clay.

11 cl, 1 dwg, 2 tbl, 2 ex