METHOD OF SYNTHESIS OF AROMATIC HYDROCARBON FROM C-C-ALIPHATIC HYDROCARBONS Russian patent published in 2002 - IPC

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to a method of synthesis of aromatic hydrocarbon that can be used in petroleum processing and petroleum chemistry. Invention relates to a method of synthesis of aromatic hydrocarbons in endothermic conversion of C₅-C₁₂-aliphatic hydrocarbons that is carried out by using C₁-C₄-paraffin hydrocarbons or their mixtures as a circulating carrier containing hydrogen by limitation of heating temperature of liquid raw in heaters. Method involves raw heating in heaters, contact of heated raw with zeolite catalyst in reaction zone under condition of synthesis of aromatic hydrocarbons to yield flow of products, isolation of the end liquid product from products flow containing aromatic hydrocarbons and flow of light hydrocarbons containing at least one of C₁-C₄-paraffin hydrocarbon, heating light hydrocarbons flow and its mixing with raw for direct conversion of heat energy to raw that is sufficient for endothermic conversion at least part of its to aromatic hydrocarbons. Raw containing only C₅- and/or C₆,-aliphatic hydrocarbons is heated in heaters to temperature 500 C, not above; raw containing at least one of C₇-C₁₂-paraffins is heated to 480 C, not above. EFFECT: high degree of raw conversion, energetic providing endothermic process of synthesis of aromatic hydrocarbons from paraffins. 4 cl, 1 dwg, 6 tbl