CN201493116U - A new type of structured packing - Google Patents

Abstract

The utility model relates to a new type of structured packing. The upper or lower opening of the linear trough channel of the window-opening diversion structured packing is respectively provided with two sections of folded plates with opposite directions. The first flap at the upper or lower opening of the trough channel The first folded plate is in the same direction as the gas phase flow in the tower, and the length is 20-50mm; the second folded plate is 10-25° from the first folded plate, and the length is 20-50mm; the second folded plate is the common packing section, The included angle with the first section of the folded plate is 30-50°, and the length is 40-400mm. Experimental and theoretical calculation results show that this improvement makes the upper or lower opening of the packing trough channel consistent with the flow direction of the fluid in the column, which has an obvious diversion effect and can significantly reduce the gap between two adjacent layers of corrugated packing. Fluid resistance and pressure drop, thereby increasing fluid throughput.

Description

A new type of structured packing

technical field

The utility model relates to a new type of structured packing, in particular to a new type of structured packing with multi-fold plate window opening and diversion that can reduce the gas phase flow resistance.

Background technique

At present, the plate corrugated structured packing commonly used in chemical towers is mainly straight ridge line corrugated packing, and its channels are generally inclined straight channels with an inclination angle between 30° and 45°. In order to promote liquid film turbulence and improve mass transfer effect, our laboratory proposed a new type of window-guiding structured packing (application number: 200810151274.5). The liquid on both sides of the same packing sheet can exchange and flow, and the liquid originally flowing on one side of the packing sheet is guided to the surface of the other side, increasing the effective mass transfer area of gas and liquid, thereby improving the mass transfer efficiency. However, the structured packing of the above-mentioned structure has the following problems: the structured packing is usually layered and staggered in the column, and its plate surface is consistent with the direction of the fluid in the column, but the direction of the linear trough channel is consistent with the direction of the fluid in the column. The direction of flow is not exactly the same, so at the overlap between two adjacent layers of packing, that is, at the upper or lower opening of the trough channel, the resistance and pressure drop of the fluid increase significantly, resulting in a relatively small gas phase flux of the packing. Therefore, it is necessary to improve the equipment structure to reduce the pressure drop and increase the gas flux while obtaining higher mass transfer efficiency.

Contents of the invention

The purpose of the utility model is to improve the structure of the window-opening diversion structured packing, reduce the fluid resistance and pressure drop at the overlap joint of two adjacent packings, and further increase the fluid flux.

In order to achieve the above purpose, the utility model is provided with two sections of flaps in opposite directions at the upper or lower opening of the linear wave valley channel of the window-opening diversion structured packing, and the first section of the folding plate at the upper or lower opening of the wave valley channel is The plate is in the same direction as the gas phase flow in the tower, and the length is 20-50mm; the second folded plate is 10-25° from the first folded plate, and the length is 20-50mm; The included angle between one section of folded plates is 30-50°, and the length is 40-400mm. Experimental and theoretical calculation results show that this improvement makes the upper or lower opening of the packing trough channel consistent with the flow direction of the fluid in the column, which has an obvious diversion effect and can significantly reduce the gap between two adjacent layers of corrugated packing. Fluid resistance and pressure drop, thereby increasing fluid throughput.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of multi-fold plate window diversion structured packing of the present invention;

Fig. 2 is a top view of multi-fold plate window diversion structured packing.

Fig. 3 is a front view of the structured packing with multi-folded plate opening and diversion.

Detailed ways

The following is a more detailed description of the technical characteristics of the utility model cosine window diversion structured packing according to the accompanying drawings:

As shown in Figure 1, the utility model multi-fold plate window diversion structured packing 1 is a rectangular triangular corrugated plate, the inclination angle of the valley channel 2 is between 30 and 45°, the upper port 3 and the lower port of the wave valley channel 2 4. Two sections of folding plates with opposite directions are respectively provided. Concave windows 6 are provided on the crests 5, and convex windows 7 are provided in the troughs.

As shown in Figures 2 and 3, the multi-fold plate window-opening and diversion structured packing of the utility model is respectively provided with two sections of fold plates in opposite directions at both ends of the wave valley channel. The first folded plate 8 is in the same direction as the fluid in the tower, with a length of 20-50mm; the second folded plate 9 is at an angle of 10-25° to the first folded plate, and the length is 20-50mm; the second folded plate is The angle between the common packing section 10 and the first section of the folded plate is 30-50°, and the length is 40-400mm.

Using the novel structured packing of the utility model, the pressure drop experiment was carried out on the cold film experimental device of Tianjin University. The results showed that the pressure drop of the new structured packing with multiple folded plates and windows diversion was higher than that of the ordinary window diversion structured packing. 15% lower.

Claims (1)

1. novel structured packing, it is characterized in that being respectively equipped with two sections opposite flaps of direction at the suitable for reading or end opening of window diversion structured packing linear trough passage, first section flap at the suitable for reading or end opening place of trough passage is consistent with gas phase flow direction in the tower, length 20～50mm; Second section flap and first section flap are 10～25 °, length 20～50mm; What accept second section flap is common packing section.

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