HYDROGEN TREATMENT OF CRUDE TALL OIL FOR PRODUCING AROMATIC MONOMERS Russian patent published in 2015 - IPC C10G65/12 C07C4/06 C07C51/265 C07C15/08 C07C63/26 C10G3/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing aromatic hydrocarbons from tall oil-based raw material. The method is characterised by that hydrogen gas and bio-oil, which consists of 2-90% tall oil fatty acids and 2-98% tall oil resin acids and optionally other vegetable oils, are fed into a fixed catalyst bed formed by a solid material; the bio-oil is subjected to catalytic deoxygenation and cracking in the bed under the effect of hydrogen using a deoxygenation catalyst and a cracking catalyst which differ from each other and are arranged in series at a distance from each other in the catalyst bed. The stream coming from the bed is cooled and divided into a hydrocarbon-containing liquid phase and a gas phase, and one or more aromatic hydrocarbons, selected from a group which includes ortho-xylene, meta-xylene, para-xylene and cymene, such as para-cymene, are extracted from the hydrocarbon-containing liquid phase. The invention also relates to a method of producing terephthalic acid from biological material.

EFFECT: disclosed method enables to convert wood-derived material into monoaromatic compounds.

14 cl, 2 ex, 1 tbl, 1 dwg