FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining acetylene by Sachsse-Bartholome method by burning natural gas/oxygen mixture in one or several burners with obtaining pyrolysis gas, which is cooled in furnace columns in two or more stages. One or several furnace columns are respectively connected to each burner, with said pyrolysis gas being extinguished at first stage of cooling by means of pyrolysis oil with obtaining low-boiling fraction, containing styrene, indene, benzene, toluene and xylene, from one or several furnace columns, which is cooled by direct cooling with water and is divided in phase-separator into water phase and organic phase, containing styrene, indene, benzene, toluene and xylene, which is supplied into head part of one or several furnace columns as phlegm. Method is characterised by the fact that organic phase, containing styrene, indene, benzene, toluene and xylene,is supplied from phase-separator to selective hydration on catalyst, which contains at least one metal of platinum group on inorganic metal oxide as substrate, containing from 0.05 to 5 wt % of platinum group metal, counted per the total catalyst weight, with said selective hydration being carried out under pressure from 1 to 40 bars and temperature in the range from 25 to 150°C.
EFFECT: application of claimed invention makes it possible to reduce problems, associated with polymer deposits.
10 cl, 1 ex, 1 dwg
