DEVICE FOR PURIFICATION AND RECOVERY OF EXHAUST FLUE GASES Russian patent published in 2018 - IPC B01D47/00 

FIELD: ventilation.

SUBSTANCE: invention relates to ash collectors and can be used in thermal power plants. In a device for purification and recovery of exhaust flue gases comprising an inlet pipe, a housing, an outlet pipe, a precipitation chamber, the precipitation chamber is provided with a partition wall immersed in the chamber, herewith the lower part of the partition wall immersed in the chamber has longitudinal grooves with a constant pitch, and the inlet gas duct of the device is provided with a water sprinkler in the form of a manifold with vortex nozzles, water into which, under pressure, flows through a pipeline from the screw pump connected to a water collection tank, the said water comes from an overflow window of the precipitation chamber with an adjustable gate through the drainage pipe, herewith in the lower part of the chamber there is a heat exchanger in the form of a tubular coil, and the device is provided with a dehumidifier having a tangential inlet, each of the vortex nozzles comprises a body, and a coaxially arranged swirling insert with an external helical thread and an expanding conical hole inside, wherein the fitting has a cylindrical inlet opening connected to a diffuser, which is made axially symmetric in the body, and in the lower part of the body there is a nozzle arranged axially symmetric to the body and having a two-stage and coaxial to the swirling insert diffuser, the first stage of the diffuser is a continuation of the expanding conical hole made inside the swirling insert, which is made from wear-resistant material, and the second stage of the diffuser is an extension of its first stage, while on its inner conical surface there is a screw-like thread, herewith the conical surface with the screw-like thread of the second stage of the diffuser is made perforated, and in the lower part of the body, coaxial to it, a cylindrical shell is fixed, on which a flow divider is arranged in the form of at least two rods located obliquely to the axis of the nozzle and connected to each other in the lower part, to which a vertically disposed rod is attached, onto which there is a vortex made in the form of a cone with helical blades enclosing the rod with a clearance and resting in the lower part on a thrust located horizontally and perpendicularly to the rod.

EFFECT: increase of the efficiency of resource saving and cleaning of flue gases by increasing the surface of the spray by using a vortex nozzle.

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