Multistage-absorption-type rotating packed bed

Abstract

The invention discloses a multistage-absorption-type rotating packed bed, comprising a cylindrical shell, wherein a rotating shaft is vertically arranged in the center of the cylindrical shell and is connected with a motor, and gaps are reserved between the outer circumferences of plane meshed plate filler groups and the inner wall of the shell; the rotating shaft is of a hollow structure, and a liquid inlet is arranged at the upper end of the rotating shaft; the primary plane meshed plate filler group is fixed at the upper end of the rotating shaft, the secondary plane meshed plate filler group is arranged below the primary plane meshed plate filler group and is located at the outer side of a tank wall of a central distribution tank which is fixed on the rotating shaft, and small holes are distributed on the rotating shaft on which the primary plane meshed plate filler group is arranged; a liquid collecting groove used for collecting liquid flowing downwards from a higher stage of plane meshed plate is arranged between every two stages of plane meshed plate filler groups, flow guide pipes are arranged on the grooves, and the liquid outlets of the flow guide pipes are over against the distribution tanks below the flow guide pipes; and a rotary demister is further fixed on the rotating shaft above the primary plane meshed plate filler group. The rotating packed bed can obtain higher heat transfer and mass transfer coefficients and higher dust collection efficiency under the condition of lower liquid-gas ratio.

Description

technical field [0001] The present invention relates to an intensified rotating bed, in particular to a multi-stage rotating bed with interval-separated planar screen groups as fillers, the upper-stage absorption liquid is sent to the next-stage absorption, and its performance in enhancing heat transfer and mass transfer , dust removal and distillation and other fields of application. Background technique [0002] There are many forms of existing high-gravity rotating beds, among which concentric circular thin-plate packing rotating bed gas-liquid mass transfer reactor (patent number is ZL95214611.8), plate-type rotating film gas-liquid mass transfer reaction device (patent number is ZL95106281. 6), gas-liquid heat and mass transfer device of axial-flow rotating packed bed (patent No. ZL97212054.8), multi-stage atomized supergravity rotating bed with planar screen reinforcement (patent No. ZL200710031272.8), planar net Plate-packed cross-flow supergravity rotating bed (Pate...

AI Technical Summary

Problems solved by technology

[0006] When the existing high-gravity rotating bed is applied to the gas absorption field, there is a high liquid-gas ratio (10-1200L / m 3 ) weakness, especially when used to deal with low-concentration, high-flow industrial waste gas, the high liquid-to-gas ratio makes it difficult to popularize and apply this high-efficiency mass transfer equipment in the competition with large absorption towers

In addition, there are difficulties in the introduction and export of the intermediate absorption liquid, which affects the popularization and application of the rotary bed in the field of industrial rectification

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