JPS5918082B2 - Filler for gas-liquid contact - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas-liquid contact filler, particularly a liquid film type filler.

Conventionally, gas-liquid contact exchange devices such as cooling towers or gas absorption towers are roughly divided into liquid film type and splash type depending on the flowing state of the liquid, such as water. It is about improvement.

Usually, this kind of filler is made by forming a thin plate of metal or synthetic resin into suitable irregularities, so-called corrugations, by pressing or vacuum forming, so that the liquid film flowing down along the corrugations can be brought into sufficient contact with the gas. It is something.

That is, in order to make the liquid as thin as possible in the form of a liquid film and to increase the contact area of gas and liquid, geometrical unevenness or wave-like unevenness is formed on the surface of the plate.

A large number of such plate-shaped bodies are lined up in parallel in a tower at predetermined intervals and packed as blocks.

However, some of the water droplets that fall from the sprinkler system at the top quickly fall through the spaces between the fillers.

Therefore, not only does the gas-liquid contact efficiency deteriorate, but the water droplets falling through the space accompany the air flow and cause a drift.

For example, in a cross-flow cooling tower, air flows from the side, so water is pushed toward the exit of the wind.

As a result, there is a dead space where water does not flow down, and gas-liquid contact does not take place in this area, which significantly reduces the cooling efficiency of the tower.Furthermore, water droplets that fly out from the middle of the packing material are carried out of the tower by the wind pressure of the blower. The waste is discharged and becomes a so-called carryover, which has a negative impact on the surrounding environment.

Furthermore, there was a drawback that the sound of falling water droplets generated a considerable amount of noise.

The present invention improves these drawbacks by completely capturing the water flowing down from the water sprinkler at the top of the filler, preventing the water from falling directly into the gaps in the filler, and directing the water to the surface of the filler. The purpose of the present invention is to provide a filler that is reliably guided to flow down in the form of a liquid film.

The gist of the present invention is that, in a packing material used by blocking and filling a gas-liquid contact tower, the packing material is made to protrude alternately from the top side and the back side thereof, or only from the same side. A large number of rows of water droplet traps are provided at predetermined intervals along the width direction of the filling body, and a plurality of such rows are also formed at predetermined intervals in the vertical direction, and the lower row is arranged in parallel with the upper row. This gas-liquid contact filler is characterized in that the water droplet trapping part starts singing by half a pitch.

In the present invention, it is preferable that the water droplet trapping part is integrally molded and protrudes from a flat area formed on the top of the filler, usually in the vicinity of the watering device.

Its shape is trapezoidal, and its height is equal to the gap between the fillers.

Such protrusions, that is, water droplet traps, are arranged in rows along the width direction of the filler at predetermined intervals, forming two or more rows above and below, but in this case, in the same row, they are arranged alternately on the front side and the back side. They may be made to protrude, or all of the same row may be made to protrude to the front side, and all the rows below it may be made to be made to protrude to the back side.

The point is that when a large number of fillers are combined into a block, the top layer should be placed vertically from the top of the filler so that there is no gap, or in other words, the lower part cannot be seen through, that is, the line of fall of water droplets is blocked. It is important that the water droplet traps in the lower row are arranged with a distance of half a pitch from the row.

Specific examples will be explained below with reference to the drawings.

FIG. 1 is a partially cutaway perspective view of an example of the present filling material when a two-sheet set is combined, in which 1 is the filling material body, 2 is the uneven portion formed on its surface, and 3 is the main body 1. This is an area that is integrally formed on the upper part of the water droplet trap and is provided with a water droplet trap.

In this figure, the area is shaped like a flat plate, but it is not necessarily limited to this, and may be a corrugated plate having ridges in the width direction.
This makes water capture even more effective.

In this example, the water droplet traps in the first row protrude alternately to the front side and the back side as numbers 4 and 4', and the water droplet traps in the second row protrude alternately to the front and back sides as numbers 5 and 5', respectively. It is made to protrude on the opposite side from ゜4'.

The distance between the water droplet traps 4 and 4' or between the water droplet traps 5 and 5' is equal to the longitudinal dimension of each of the water droplet traps.

As shown in Fig. 1, the fillers having the water droplet traps arranged in this way are placed with their front sides (or back sides) butted against each other, and between 4 and 4' of one filler, the other filler is placed. If this filling material is made into blocks so that they are adjacent so that 4 is included (or 5 is included between 5 and 5'), a gap will be created between each water droplet trapping part when viewed vertically from the upper end surface of the block. It can be configured so that it does not.

Figures 2a and 2b show other examples of trapezoidal shapes of the water droplet traps, and these do not necessarily have to be arranged horizontally, but may be arranged slightly individually as shown at 4 and 5 in Figure 3. There is no problem even if it is tilted.

In addition, instead of having the water droplet trapping parts alternately protrude from the front and back sides of the filling material, 6 and 6' are made to protrude only from one side as shown in Fig. 4, so that 6 and 6' are alternately offset in each row. They may be arranged to intersect.

゛In this case, the filling materials are assembled by butting the front side of one filling material against the back side of the other filling material, instead of butting the front sides (or back sides) together as in the above example. It is made into blocks.

At this time, there is no problem if the protrusion 7 for maintaining the spacing between the fillers is provided in the filler body 1, but the water droplet traps 6 and 6' also serve as the spacing maintainer. In some cases, it is necessary to form blocks by shifting the water droplet trapping portions of the filler so that they do not overlap.

Since the present invention is configured in this way, water that falls between the fillers from the water sprinkler installed at the top always hits one of the water droplet traps at the top and is guided to the uneven surface of the adjacent filler body. It becomes a liquid film and flows down.

Since the large number of water droplet traps are evenly distributed on both sides of the filler, water flows down the sides of each filler main body equally.

As a result of all the water droplets being captured in the upper part, the sound of falling water is significantly reduced, carryover is prevented, and mass transfer efficiency can be improved, which is extremely effective.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a solid example of the filler of the present invention in a blocked state; FIGS. 2a and b are perspective views illustrating the shape of a water droplet trap; and FIG. FIG. 4 is a perspective view illustrating the arrangement of the water droplet trap. 1... Filler body, 2... Uneven surface, 3
...Water droplet trap installation area, 4 to 6...
Water droplet trap.

Claims (1)

[Claims] 1 In a packing material used by blocking and filling in a gas-liquid contact tower, the top of the packing material is filled with water droplet trapping parts that protrude alternately from the front side and back side of the packing material, or only protrude from the same side. A large number of rows are provided at predetermined intervals along the width direction of the material body, and a plurality of such rows are also formed at predetermined intervals in the vertical direction, and the water droplet trapping portions in the lower row are half the size of the upper row. A filler for gas-liquid contact, characterized by having an origin corresponding to the pitch.