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Rectifying tower, rectifying system and application thereof

A technology of rectification tower and wire mesh, which is applied in the field of rectification system, can solve the problems of thinning liquid film thickness, reducing the original separation effect of packing, and uneven packing wetting, so as to reduce product cost, good economic benefits, shorten Effect of distillation time

Active Publication Date: 2020-09-15
SHANGHAI RES INST OF CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the wall flow directly determines the amount of liquid flowing to the surface of the packing. The reduction of the liquid amount will reduce the thickness of the liquid film, and in severe cases, it will lead to uneven wetting of the packing, thereby greatly reducing the original separation effect of the packing.

Method used

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  • Rectifying tower, rectifying system and application thereof
  • Rectifying tower, rectifying system and application thereof
  • Rectifying tower, rectifying system and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] Attached image 3 In the rectification system shown, the raw material to be processed is R-1, the processing capacity is 10kg / h, the mesh numbers of filter 1, filter 2 and filter 5 are 50 mesh, 150 mesh and 300 mesh respectively, the first refining The diameters of the rectifying columns of the distillation tower 9 to the fifth rectifying tower 13 are 100mm, 100mm, 50mm, 50mm and 50mm respectively, and the heights of the rectifying columns are respectively 12 meters, 8 meters, 13 meters, 16 meters and 14 meters. The rectification columns of the first rectification tower 9 and the second rectification tower 10 are filled with plate corrugated packing (model 500Y, brand SULZER), and the rectification columns of the third rectification tower 11 to the fifth rectification tower 13 are packed with structured packing B .

[0134] The reflux ratios of the first rectification tower 9 to the fifth rectification tower 13 are 3:1, 10:1, 10:1, 20:1, 15:1 respectively. The operati...

Embodiment 2

[0137] Attached image 3 In the rectification system shown, the raw material to be processed is R-2, the processing capacity is 600kg / h, the mesh numbers of filter 1, filter 2 and filter 5 are 50 mesh, 180 mesh and 320 mesh respectively, the first refining The diameters of the rectifying columns of the distillation tower 9 to the fifth rectifying tower 13 are 100mm, 200mm, 350mm, 400mm and 400mm respectively, and the heights of the rectifying columns are 7 meters, 10 meters, 12 meters, 19 meters and 19 meters respectively. The rectification column of the first rectification tower 9 is packed with structured packing A, the rectification column of the second rectification tower 10 is packed with plate corrugated packing (model 500Y, brand SULZER), and the rectification column of the third rectification tower 11 is packed with structured packing C, the rectification columns of the fourth rectification tower 12 and the fifth rectification tower 13 are packed with structured packin...

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Abstract

The invention discloses a rectifying tower, a rectifying system and application thereof. The rectifying tower comprises structured packing in the rectifying tower, the structured packing is formed byarranging a plurality of corrugated wire mesh sheets which are vertical to the horizontal plane, and the adjacent corrugated wire mesh sheets are arranged in parallel; the corrugated wire mesh sheetsare formed by weaving spiral winding type double-strand silk threads, and the weaving density of the spiral winding type double-strand silk threads is increased in the direction from the center to theperiphery of the wire mesh sheets.

Description

technical field [0001] The invention relates to a corrugated wire mesh sheet used as structured packing, a rectification tower containing the corrugated wire mesh sheet, a rectification system and a rectification method formed by the rectification tower. The rectification system of the present invention can, for example, be effectively used to separate pyrolysis products of chlorotrifluoroethylene, thereby improving rectification efficiency, shortening rectification time, obtaining high-purity fractionated products while reducing product costs, and achieving good economic benefits. Background technique [0002] Among many fluorine-containing etching gases, hexafluoro-1,3-butadiene (C 4 f 6 , referred to as hexafluorobutadiene) has the best C / F ratio, can obtain a moderate etching rate, and has better protection for 193nm photoresist, and can achieve nearly vertical etching. At the same time, due to the above characteristics, hexafluorobutadiene can also maintain high selec...

Claims

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Application Information

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IPC IPC(8): B01D3/14B01D3/32C07C23/06C07C21/18C07C17/383
CPCB01D3/14B01D3/143B01D3/32B01J19/32C07C17/383C07C23/06C07C21/18
Inventor 李瑜哲张智勇艾波吴高胜许保云包春凤杜丽君吴君毅
Owner SHANGHAI RES INST OF CHEM IND
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