METHOD FOR PRODUCING ACETYLENE ACCORDING TO THE SACHSSE-BARTHOLOME METHOD

摘要

1. A process for the preparation of acetylene by the method Sakse Bartolome (Sachsse-Bartholome) by burning a mixture of natural gas / oxygen in one or more burners to obtain pyrolysis gas which is in two or more stages cooled in the distillation columns, wherein each burner is connected to respectively one or more distillation columns, and wherein the pyrolysis gas in the first cooling step is quenched via pyrolysis oil to give a low-boiling fraction comprising styrene, indene, benzene, toluene and xylene, of one or more Negotia nnyh columns, which is cooled by direct cooling with water and in the phase separator is separated into an aqueous phase and an organic phase comprising styrene, indene, benzene, toluene and xylene, is fed to the head of one or more distillation columns as reflux, characterized in that the organic phase comprising styrene, indene, benzene, toluene and xylene from the phase separator is fed to a selective hydrogenation on a catalyst which contains at least one platinum group metal on an inorganic metal oxide achestve medium containing from 0.05 to 5% by weight. platinum group metal based on total catalyst weight, and wherein the selective hydrogenation is carried out at a pressure in the range from 1 to 40 bar and a temperature in the range from 25 to 150 ° C.2. A method according to claim 1, characterized in that the organic phase from the phase separator comprising styrene, indene, benzene, toluene and xylene, has the following composition: from 8 to 18% by weight. styrene, from 5 to 10 wt%. indene, a total of from 15 to 20 wt%. amount ortho-, para- and meta-xylene, 15 to 20% by weight. toluene OTH 8 to 10 wt%. benzene, and