Serrate double-layer wire mesh corrugated packing

A wire mesh corrugated packing, double-layer metal technology, applied in chemical/physical/physical chemical process, chemical instrument and method, chemical/physical process, etc., can solve the problems of dead zone, easy formation of mass transfer, easy fracture of wire mesh, etc. , to reduce investment costs, improve mass transfer efficiency, and improve product quality.

Active Publication Date: 2013-02-06
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Invention patent 201010610058.X discloses a serrated corrugated packing, which effectively improves the vapor and liquid mass transfer characteristics of the precision rectification system; Disadvantages that mass transfer dead zones are easily formed at the peaks and troughs

Method used

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  • Serrate double-layer wire mesh corrugated packing
  • Serrate double-layer wire mesh corrugated packing
  • Serrate double-layer wire mesh corrugated packing

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A kind of sawtooth double-layer metal wire mesh corrugated packing, its structure is as follows Figure 2-4 As shown, the packing is made of double-layer wire mesh material and mechanically rolled into a sawtooth corrugated packing sheet structure. The metal material used can be stainless steel, phosphor bronze or aluminum alloy, and the hole diameter of the wire mesh is 3-6mm. The crests and tops of the troughs of the corrugated packing sheet are connected by smooth arc surfaces, forming a curved zigzag corrugated structure with smooth tooth tips. The cross section of the corrugated packing sheet is a right triangle structure, and the peak height of the serrated corrugation is 1.5-8mm, the formed addendum angle is 15 - 75°, the radius of curvature at the top of the crest and trough is less than 1 / 4 of the height of the crest or trough, generally speaking, the radius of curvature is 0.5 - 2mm. The formed corrugation ridge line and the axial direction of the filler for...

Embodiment 2

[0032] Isopropanol-water rectification separation, vacuum distillation column diameter 1370mm. Punch holes with a diameter of 5 mm on the 80-mesh double-layer stainless steel wire mesh, with an opening rate of 10%, and roll the wire mesh as a whole to form a sawtooth corrugated packing with a peak height of 3.5 mm and an addendum angle α = 60°. Section as figure 2 shown. The corrugated plates are cut and assembled into packed discs with a diameter of 1300 mm and a disc height of 300 mm, and filled in the rectification tower. Under the same separation index, the separation efficiency of the packing technology of the present invention is 30% higher than that of the traditional metal plate corrugated packing, and the separation economic performance is greatly improved.

Embodiment 3

[0034] Preparation of Stable Isotopes by Cryogenic Distillation and Separation 13 c. Use 100-mesh double-layer stainless steel wire mesh to punch a hole with a diameter of 3mm, and the opening rate is 5%. Roll the wire mesh sheet as a whole to form a sawtooth corrugated packing with a peak height of 2.5mm and an addendum angle α=45°. The packing waveform Indicate as figure 2 shown. The corrugated plates are cut and combined into packing discs with a diameter of 30mm and a disc height of 30mm. Filled with CO cryogenic distillation 13 C's packed tower. Compared with the traditional corrugated packing with the same peak height of 2.5mm, its mass transfer and separation efficiency is increased by 30%.

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Abstract

The invention relates to a serrate double-layer wire mesh corrugated packing which forms a serrate corrugated packing sheet structure by mechanically rolling double-layer wire mesh materials, wherein the top end of the wave crest and the top end of the wave trough of a corrugated packing sheet are respectively formed by connecting smooth arc surfaces, and an arc serrate corrugated structure with a smooth tooth top is formed, and a formed corrugated ridge and the axial direction of the packing form an included angle. Compared with the prior art, the serrate double-layer wire mesh corrugated packing is easy to manufacture, excellent in fluid mechanics and mass transfer performance, especially applicable to separating of small-coefficient mixtures which are difficult to separate, such as separation preparing of isotopes, and capable of being popularized and used in the precise separation field of traditional purification of flavors, fragrances and medical intermediates.

Description

technical field [0001] The invention relates to a structured packing filled with tower equipment in the chemical industry, in particular to a sawtooth-shaped double-layer wire mesh corrugated packing, which is applied to the regularization of difficult-to-separate systems such as isotope separation, flavor and fragrance separation and purification, and pharmaceutical intermediate purification. filler technology. Background technique [0002] Corrugated packing has the advantages of low pressure drop, large flux, and high separation efficiency, and is widely used in many towers in the fields of fine chemicals, spices, oil refining, fertilizers, and petrochemicals. However, with the improvement of separation requirements, especially for isotope separation, the existing corrugated packing gradually reveals its shortcomings, and the structure of the corrugated packing needs to be further optimized. For example, Japan’s Tokyo Gas CO. established a stable isotope preparation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/32
Inventor 李虎林田叶盛周建跃蔡扬吉永喆许保云
Owner SHANGHAI RES INST OF CHEM IND
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