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Serrate corrugated padding and use thereof

A technology of corrugated packing and corrugated packing sheets, applied in chemical/physical/physicochemical processes, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of poor understanding of microscopic phenomena of two-phase flow on the surface of packing and poor separation effect , Difficulty in measuring the flow field distribution of two-phase flow, etc., to achieve the effects of facilitating engineering popularization and application, improving separation efficiency, reducing liquid holdup and vapor-liquid residence time in the tower

Inactive Publication Date: 2014-09-10
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the highest specific surface area has reached 1700m 2 / m 3 , almost reached the limit of manufacturing equipment! Moreover, blindly relying on increasing the specific surface area to improve the transfer process has also encountered a bottleneck: when the specific surface area of ​​the filler is further increased, the separation effect will be worse! At the same time, since the equivalent diameter of the vapor-liquid channel in the corrugated packing is only 1.5-8 mm, it is very difficult to actually measure the flow field distribution of the two-phase flow, resulting in little understanding of the microscopic phenomena of the two-phase flow on the packing surface

Method used

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  • Serrate corrugated padding and use thereof
  • Serrate corrugated padding and use thereof
  • Serrate corrugated padding and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 2-3 As shown, use a stainless steel plate with a thickness of 1mm to punch a hole with a diameter of 5mm, the punching rate is 10%, and then roll it into a zigzag shape with a peak height h=4mm, a tooth profile angle α=60°, and a corrugation inclination angle β=30° Zigzag-pak corrugated packing, cut and combined into a packing disc with a diameter of 800mm and a disc height of 300mm. Instead of the traditional corrugated packing with a peak height of 4mm and a wave pitch of 8mm, it is used for xylene rectification, and the separation efficiency is greatly improved.

Embodiment 2

[0025] Use 100-mesh stainless steel wire mesh to punch a hole with a diameter of 5mm, the punching rate is 5%, and then roll it into a zigzag-shaped Zigzag- pak corrugated packing, cut and combined into a packing disc with a diameter of 30mm and a disc height of 30mm. Mounted on Separation Isotope 13 C's CO cryogenic rectification tower. Its separation efficiency is higher than the same peak height of 2.5mm, and its specific surface area is 1100m 2 / m 3 traditional corrugated packing.

Embodiment 3

[0027] Use an aluminum alloy plate with a thickness of 0.8mm, roll it into a zigzag-pak corrugated packing with a peak height of h=3mm, a tooth profile angle α=15°, and a corrugation inclination angle β=60°, and cut it into a diameter of 400mm. 200mm packing disc. Mounted on Separation Isotope 18 O of O 2 in the cryogenic distillation column. Its separation efficiency is higher than that of traditional Sulzer corrugated packing with the same peak height of 3mm.

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Abstract

The invention relates to serrate corrugated padding and use thereof, Zigzag-pak which is characterized in that: the metal platy material is rolled into to a serrate corrugated shape by a milling machine; one side of the saw-teeth is vertical to the extension direction of a padding sheet; the axis of the corrugation and the vertical direction form an angle; a corrugated plate is cut into rectangular padding sheets with different lengths and the same width; each two adjacent padding sheets are arranged in a staggered way; a plurality of padding sheets are bound to form a circular disk. The peak height (h) of the serrate corrugation is 1.5-8 mm; the serrate angle (alpha) is 15-75 DEG; and the corrugated inclination angle (beta) is 15-60 DEG. Compared with the prior art, the serrate corrugated padding is high in separation effect, low in cost and the like.

Description

technical field [0001] The invention relates to a novel corrugated packing for chemical rectification, in particular to the packing technology for rectification of difficult separation systems such as isotope separation. Background technique [0002] Corrugated packing has been widely used in industry due to its advantages of small resistance, large flux, small liquid holding capacity, large processing capacity and easy enlargement. The structural feature of the existing corrugated packing is that the wave form is an isosceles triangle, every two pieces of packing are stacked alternately, and the gas-liquid two phases flow regularly in the packing channel, which has great advantages compared with the traditional random packing. However, with the improvement of separation requirements, the transfer efficiency of the existing corrugated packing still needs to be improved. For example, the low-temperature rectification separation of Sanso Company in Japan 18 O's production un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/32
Inventor 李虎林袁家均许保云龙磊吉永喆蔡扬
Owner SHANGHAI RES INST OF CHEM IND
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