MULTI-STAGE BUBBLING EXTRACTOR Russian patent published in 2014 - IPC B01D11/04 

FIELD: textiles, paper.

SUBSTANCE: invention relates to a multi-stage bubbling extractor and can be used in chemical, petrochemical, food, pharmaceutical and other industries. The multi-stage bubbling extractor comprises a vertical housing divided by partitions into sections-settlers with the mixing devices located inside, made in the form of two concentric pipes, the gas distribution nozzles with holes, nozzles for heavy fluid flow and overflow pipes for light fluid with holes. In each section-settler the outer pipe of the mixing device is mounted on the lower partition, and its upper edge is located at mid-height of the section-settler. The inner pipe of the mixing device is mounted with a gap to the lower partition, and in its upper end the holes are made for the gas discharge from the mixing device. The gas distribution nozzle is made in the form of an inverted cup with holes in the upper cover located above the lower edge of the inner pipe of the mixing device. The lower edge of the gas distribution nozzle is located below the holes for gas discharge from the mixing device of the underlying section-settler. In the web of the upper cover of the gas distribution nozzle concentrically to the mixing device the overflow pipe for light fluid is mounted, the lower edge of which is located below the holes for gas discharge from the mixing device of the underlying section-settler, and the holes in its upper part are located inside the nozzles for heavy fluid flow, the lower edge of which is located below the holes for gas discharge from the mixing device.

EFFECT: result is to increase technological capabilities of the extractor by using it for processing of fluid systems in which light fluid undergoes dispersion and heavy fluid is a continuous medium.

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