FIELD: oil and gas industry.
SUBSTANCE: invention relates to installations for the production of aromatic hydrocarbons from C3+ hydrocarbons; it can be used in the oil and gas industry. The invention relates to an installation for the catalytic recycling of light hydrocarbon raw materials with the production of aromatic hydrocarbons, including a catalytic recycling block, which consists of a catalytic recycling unit with a line for supplying raw materials, a catalyzate separation unit, including an air cooling unit, a separator and a compressor with a refrigerator, as well as an adsorption purification unit, and, in addition, including a fractionation block and an absorbent supply line. A dephlegmator with a cooling unit equipped with lines for outputting phlegm and deflegmation gas is installed as a separator in the catalysate separation unit, the line for outputting deflegmation gas is equipped with a compressor, an air cooling unit, a refrigerator and a fractionating absorber with a cooling unit equipped with a line for outputting saturated absorbent and a line for outputting distilled gas, on which an adsorption purification unit is located equipped with a line for supplying blow-off gas and connected by a line for supplying regeneration gas to a dephlegmator, and a line for outputting dry gas - to a membrane installation equipped with a line for outputting hydrogen-containing gas and connected to the catalytic recycling unit by a line for supplying methane-containing circulating gas. The fractionation block is equipped with lines for outputting aromatic hydrocarbons and is connected to the dephlegmator by a phlegm output line, to the fractionating absorber - by lines for outputting the absorbent and saturated absorbent, and to the line for supplying separation gas or the line for supplying methane-containing circulating gas - by the line for outputting exhaust gas.
EFFECT: simplification of the installation and an increase in the inter-generation mileage of the catalyst.
2 cl, 1 dwg
