Multistage-absorption-type rotating packed bed

A technology of high-gravity rotating bed and rotating bed, which is applied in chemical/physical/physicochemical fixed reactors, dispersed particle separation, fractionation, etc., and can solve problems that affect the popularization and application of rotating beds, difficulty in popularization and high liquid-gas ratio, etc.

Inactive Publication Date: 2011-11-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 appl

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  • Multistage-absorption-type rotating packed bed
  • Multistage-absorption-type rotating packed bed
  • Multistage-absorption-type rotating packed bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 A structural form of the multi-stage absorption high-gravity rotating bed of the present invention is shown. The multi-stage absorption high-gravity rotary bed includes a cylindrical shell 4, a motor 1, a rotating shaft 10, a four-stage flat screen packing group 6, three-stage liquid collection grooves 7, 5, and 3, and three-stage central distribution grooves 13, 16 , 19 and rotary demister 8. The rotating shaft 10 is vertically arranged in the center of the cylindrical housing 4 and connected with the motor 1 . The lower end of the housing 4 is provided with an air inlet 2 and the liquid outlet 20 , and the upper end of the housing 4 is provided with an air outlet 9 . The rotating shaft 10 is made of stainless steel seamless pipe, which is a hollow structure, and its upper end is provided with a liquid inlet; the first-level flat screen packing group is horizontally fixed on the upper end of the rotating shaft 10, and the first-level liquid sink groove 7 is f...

Embodiment 2

[0032] The difference from Example 1 is that this embodiment is composed of a three-stage flat screen packing group. The plane screen is made of PP as the skeleton, and the PE screen is arranged on it; the distance between each plane screen is 10mm, and the outer surface of the plane screen is The gap between the circumference and the inner wall of the housing 4 is 10mm. The distance between adjacent two-stage planar stencil packing groups is 300mm. The second and third level flat mesh panels are fixed on the central distribution groove by welding. The central distribution trough is bolted to the shaft. The sink groove is made of stainless steel, and there are 6 inside the groove stainless steel guide tube. In the second-level sink groove and the third-level sink groove, there are 4 The stainless steel connecting pipe connects the sump groove and the outside of the rotating bed. Part of the intermediate absorption liquid is exported out of the system through the third-l...

Embodiment 3

[0035] The difference from Example 1 is that this embodiment has three levels of packing groups of flat screen plates, the rotating shaft is a porous seamless stainless steel pipe, the distance between the plane screen plates is 12mm, and the distance between the outer circumference of the plane screen plates and the inner wall of the housing 4 The gap is 50mm. The distance between adjacent two-stage planar stencil packing groups is 900mm. The plane screens of the second and third plane screen packing groups are fixed on the outer wall of the central distribution tank by welding. There are 4 inside the sink groove Titanium diversion steel pipe. In the second-level sink groove and the third-level sink groove, there are 4 The connecting pipe made of titanium is connected to the sump and the outside of the rotating bed. The absorption liquid is introduced from the outside through the second-stage connecting pipe to supplement the intermediate absorption liquid and enter the...

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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...

Claims

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Application Information

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IPC IPC(8): B01D3/30B01D53/18B01J19/18
Inventor 潘朝群
Owner SOUTH CHINA UNIV OF TECH
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