Rich aromatic hydrocarbon recovery device

The utility model relates to the technical field of rich aromatic hydrocarbon recovery devices, in particular to a rich aromatic hydrocarbon recovery device. According to the technical scheme, the device comprises a coal pyrolysis reactor and an extraction device, and further comprises a plurality of multi-stage bent pipes which are communicated with the coal pyrolysis reactor and are used for carrying out dust falling on oil gas, and a filter disc replacement mechanism which is used for communicating the multi-stage bent pipes with the extraction device, the filter disc replacing mechanism is provided with a plurality of filter discs and is used for fully automatically replacing the filter discs. Kinetic energy of dust in oil gas is gradually attenuated through the multi-stage bent pipe, so that the dust in the oil gas falls at the bottom of the multi-stage bent pipe, a large amount of dust in the dust in the oil gas is effectively settled, a large number of filter discs are prevented from being used and fre