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Drained style sawtooth-shaped corrugated filler

A corrugated packing and sawtooth technology, applied in the field of new high-efficiency structured packing, can solve problems such as large pressure loss, achieve the effects of small pressure drop loss, enhanced gas-liquid interaction ability, and increased mass transfer area

Inactive Publication Date: 2013-02-13
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Invention patent 201010610058.X discloses a saw-tooth corrugated packing, which effectively improves the vapor and liquid mass transfer characteristics of the precision rectification system; however, it has the disadvantage of large pressure loss

Method used

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  • Drained style sawtooth-shaped corrugated filler
  • Drained style sawtooth-shaped corrugated filler
  • Drained style sawtooth-shaped corrugated filler

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The structure of the present invention is as image 3 As shown, the corrugated packing is made of stainless steel plate, phosphor bronze plate, aluminum alloy plate or plastic sheet as a whole and pressed into a zigzag corrugated plate. The corrugated ridge line formed has an angle with the axial direction of the packing. The arc transitions to be parallel to the axial direction of the filler to achieve a smooth transition between the vapor and liquid boundaries.

[0031] Among them, the longitudinal section of the corrugated ridge line is a right-angled triangle zigzag structure, and its structure is as follows: Figure 4 As shown, the peak height of the zigzag structure is 1.5mm-8mm, and the apex angle is 15°-75°. In addition, holes can be evenly opened on the surface of the corrugated packing to increase the gas-liquid lateral mixing performance. When in use, the corrugated packing can be bundled into a packing disc so that two adjacent packing sheets are staggered...

Embodiment 2

[0034] Isopropanol-water rectification separation, the diameter of the atmospheric rectification column is 1370mm. Punch a hole with a diameter of 5mm on the surface of the stainless steel plate, and the opening rate is 10%. Ridge such as Figure 4 shown. Cut and assemble into packing discs with a diameter of 1300 mm and a disc height of 300 mm, and fill them in the rectification tower. Under the same separation index, the separation efficiency of the packing technology of the present invention is 20% higher than that of the traditional metal plate corrugated packing, the pressure drop loss is 30% smaller, and the separation economic performance is greatly improved.

Embodiment 3

[0036] Preparation of Stable Isotopes by Cryogenic Distillation and Separation 13 c. Use 100-mesh stainless steel wire mesh to punch holes with a diameter of 3mm, with an opening rate of 5%, and roll the wire mesh sheet as a whole into a diversion-type sawtooth-shaped corrugated packing with a peak height of h=2.5mm and a tooth profile angle of α=45° , packing corrugation ridge line such as Figure 4 shown. Cut and assemble into packing discs with a diameter of 30 mm and a disc height of 30 mm. 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 drained style sawtooth-shaped corrugated filler. The corrugated filler is a metal sheet or a plastic sheet which is pressed to be a sawtooth-shaped corrugated sheet; a formed corrugated chine line and a transverse extending direction of the filler form an included angle; the two ends of the corrugated chine line are in circular arc transition and the corrugated chine line is perpendicular to the transverse extending direction of the filler (namely parallel to axial direction). Compared with the prior art, according to the drained style sawtooth-shaped corrugated filler, the flowing direction change of fluid at a filler surface is stable, so that pressure drop loss is less, the shear stress between a gas phase and a liquid phase is reduced, and the flowing speed of the gas phase can be reduced. In addition, because of a sawtooth-shaped channel structure, liquid phase fluid can form a large wetting area at the filler surface. Compared with the existing filler technology, the filler has excellent fluid mechanics characteristics, the pressure drop loss of a filler sheet during a gas and liquid mass transfer process is reduced, energy is saved and consumption is reduced, and meanwhile mass transfer separation efficiency is improved.

Description

technical field [0001] The invention relates to a novel high-efficiency structured packing technology applicable to difficult-separation systems such as isotopes, and in particular to a diversion-type sawtooth-shaped corrugated packing, which is mainly filled in chemical distillation towers. Background technique [0002] In the packed tower, the vapor and liquid phases exchange countercurrently on the surface of the packing to realize the separation and purification of different systems. Corrugated packing is a widely used structured packing. Generally, metal or plastic plate materials are pressed into corrugated shapes. The cross-section is isosceles triangle, and the corrugated ridge line forms a fixed angle with the vertical direction. Arrange two adjacent pieces of packing in a staggered manner, and bind them into a square or disc shape with a binding tape. Corrugated packing has the advantages of small resistance, large flux, large specific surface area, and high separ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D59/04
Inventor 李虎林田叶盛龙磊姜永悦许保云吉永喆蔡扬
Owner SHANGHAI RES INST OF CHEM IND
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