METHOD OF PRODUCING PHENOL COMPOUNDS, EXTRACTION OF PHENOL FROM SPLIT PRODUCTS AND DEVICE TO THIS END Russian patent published in 2009 - IPC C07C37/08 C07C37/74 C07C39/04 C07C45/53 C07C45/82 B01D3/14 B01D3/32 

FIELD: chemistry.

SUBSTANCE: present invention relates to production of phenol, method of extracting phenol from products of splitting cumene hydroperoxide and to a device for extracting phenol from products of splitting cumene. The method of producing phenol involves the following stages: i) oxidation of cumene, obtaining a reaction mixture containing cumene hydroperoxide and unreacted cumene; ii) splitting products obtained from stage i), obtaining a mixture of splitting products containing at least phenol, acetone, hydroxyacetone, unreacted cumene and water; iii) treatment of the mixture of splitting products obtained on stage ii) through distillation, which involves separation of the mixture of splitting products into at least three fractions using a single fractional distillation stage through: putting the mixture of splitting products into a distillation column, removal of the first fraction, containing acetone, from the upper part of the distillation column, removal of the second fraction, containing phenol, from the lower part of the distillation column, and removal of the third fraction, containing at least unreacted cumene, hydroxyacetone and water, in form of an off-stream. The outlet opening of the off-stream is higher the area for putting in the mixture of splitting products into the distillation column, characterised by removal of heat from the distillation column. The section for removing heat is higher than the outlet opening of the off-stream of the third fraction.

EFFECT: increased energy efficiency of methods using old technology, while maintaining quality standards and total output of end products.

25 cl, 6 dwg, 1 ex