JPS6236503Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a packed plate for gas-liquid contact that allows water to flow down along the surface of a corrugated plate, and its purpose is to diffuse the circulating water and increase the gas-liquid contact efficiency. Conventionally used filling plates of this kind include a corrugated plate made of a plastic sheet or the like, in which the corrugated plate is supported with its ridge line standing vertically, and cooling water is allowed to flow down along the plate surface. There is something.
However, in this case, the cooling water adhering to the plate surface flows only in the vertical direction and hardly diffuses in the horizontal direction, resulting in low gas-liquid contact efficiency. Therefore, unevenness is provided on the slope of the corrugated plate to reduce the horizontal diffusion. There are some methods that have been made to do this, but the effect is not sufficient. In order to improve this, it has been proposed to tilt the ridgeline of the corrugated plate, but simply tilting it at an arbitrary angle cannot expect a sufficient effect. This state will be explained with reference to FIG. 1. When the included angle 2α between the slopes of the corrugated plate 1 made of plastic sheet etc. and bent in a W shape is excessively large with respect to the inclination angle θ of the ridgeline, for example, one point on the slope 12 The water droplets that fell on point O move downward from point O to the ridge line 2 perpendicular to the board surface.
3, slope 13, ridgeline 24, slope 14, ridgeline 25,
Since it flows directly downward along the line P via the slope 15, there is almost no lateral diffusion, and if the included angle 2α is too small with respect to the inclination angle θ of the ridgeline, it flows to a point O on the slope 12. Since the falling water droplets flow down along the Q line of the ridgeline 22, they hardly diffuse in other directions on the slope 12. This diffusion principle will be explained in more detail based on FIG. In the figure, V is a perpendicular line passing through one point O of the slope 12,
P ₁ is a point where a line P extending perpendicularly to the plate surface and extending vertically downward intersects the ridge line 23, and the line P is inclined at an angle β with respect to the perpendicular line V. Moreover, Q ₁ is a point on the Q line parallel to the ridgeline 22, and lines P ₁ -O ₁ and Q ₁ -O ₁ passing through one point O ₁ on the perpendicular line V are orthogonal to the perpendicular line V, respectively. In this way, the point O on the slope 12,
Assuming a triangular surface connecting P ₁ and Q ₁ , if the inclination angle β is excessively larger than θ, the water droplet falling at point O will flow down along the line O-Q ₁ (or the ridge line 22). Become. On the other hand, when the inclination angle β is excessively smaller than θ ₁ , the ridge line 23 is immediately reached along the line O-P ₁ , and in either case, the water droplets that have fallen onto the slope 12 cannot be diffused, and the gas-liquid Inoculation defects occur. The present invention improves the above-mentioned drawbacks,
When the ridgeline of each slope of a corrugated plate formed by bending a plate to form a flat slope is inclined at an angle θ with respect to the perpendicular V, the included angle between the slopes is 2α, and the slope is perpendicular to the plate surface from one point on the slope. The present invention relates to a filling plate for gas-liquid contact characterized in that the angle α is set so that θ=β, where β is the angle between a line P directly below the slope and a perpendicular line V. This will be explained below using the illustrated example.
2 to 4 are explanatory diagrams of the corrugated plate of FIG. 1 bent in a W shape, and in these figures, for convenience of explanation, point O in FIG. 1 is moved onto the ridge line 22, and h is the vertical component length between two points where a line P directly down along the plate surface intersects with two adjacent ridgelines, l is the pitch of the curved waveform, and p is the height from the base to the ridgeline corresponding to the apex. That is, it shows the width dimension of the corrugated plate. From Figure 2, sinθ=l/h...(1) From Figure 3, tanα=l/p ∴l=p tanα...(2) Substituting (2) into (1) above, sinθ=p tanα/h ∴ h=p tanα/si
nθ...(3) From Figure 4, tanβ=p/h...(4) Substituting the above (3) into (4), tanβ=p/p tanα/sinθ=p sinθ/
p tanα=sinθ/tanα...(5) ∴tanαsinθ/tanβ...(6) From equation (6), the value of α that makes θ=β is calculated as shown in the following table.

【table】

[Table] In other words, α such that β = θ is satisfied when θ exceeds 0° and is less than 90°, but in practical terms, the inclination angle θ of the ridgeline
It is preferable to set the angle appropriately within the range of 10° to 60°. Note that the shape of the corrugated plate is not limited to the W-shaped bend as shown in Fig. 1, but also the shape of the wave can be made into a continuous trapezoidal cross-section with a plane part 3 and a slope part 4 as shown in Figs. 5 and 6. good. In either case, an uneven pattern may be provided on the slope portion of the wave-shaped bend. The above-mentioned corrugated plates may be stacked and combined so that the ridge lines of each plate are in opposite directions so as to intersect with each other, or
Alternatively, various construction methods are possible, such as winding in a spiral shape with a band-shaped isolation material between each winding, or winding in a spiral shape with two corrugated plates stacked on top of each other with the ridges facing in opposite directions. Further, protrusions for maintaining the distance are provided on the corrugated plate, and the protrusions are brought into contact with each other and connected. As described above, in the filling plate of the present invention, the ridgeline of each slope of the corrugated plate is inclined at an angle θ with respect to the perpendicular line V, and a line that is perpendicular to the plate surface and directly down along the slope from one point on the slope The angle β between P and the perpendicular V is θ
= β, the water droplets falling on the slope can be evenly spread both vertically and horizontally. That is,
In Fig. 7, when θ=β, the points O, P ₁ , Q ₁
The triangular surface connecting them is an isosceles triangle, and the water droplet falling at point O passes through the center of this triangular surface and reaches the slope 12.
flowing down above. For this reason, water droplets do not flow down along the ridgeline 22 of the valley, nor do they immediately reach the ridgeline 23 of the mountain, so compared to the conventional corrugated plate tilted at an arbitrary angle, the water droplets are much easier to handle. We were able to increase the contact efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a corrugated plate, FIGS. 2 to 4 are explanatory diagrams of the corrugated plate, and FIG. 2 is a front view of FIG. 1, and FIG. The figure is a plan view in the direction of arrow _Y1 in figure 2, and figure 4 is a plan view in the direction of arrow Y1 in figure 2.
The left side view of the figure, Figure 5 is a front view of a corrugated plate with a different wave shape, Figure 6 is a plan view in the _two directions of arrow Y in Figure 5, and Figure 7 is for explaining the principle of water droplet diffusion. FIG. 1 is a corrugated plate, 3 is a plane part, 4 is a slope part, 10~
15 is a slope, and 20 to 25 are ridgelines.

Claims (1)

[Scope of utility model registration request] When the ridgeline of each slope of a corrugated plate formed by bending a plate to form a flat slope is inclined at an angle θ with respect to the vertical V, the included angle between the slopes is 2α, and the angle from one point on the slope is perpendicular to the plate surface. A filling plate for gas-liquid contact, characterized in that the angle α is set so that θ=β, where β is the angle between a line P directly below the slope and a perpendicular line V.