JPH06154584A - Manufacture of fluid dispersing plate - Google Patents

Abstract

PURPOSE:To make dispersing plate which can discharge fluid in the non- rectangular direction to its outflow surface without troublesome work such as nozzle attachment and punching by rolling a sheet or laminate of plain weave guaze with a rolling machine. CONSTITUTION:A sheet or laminate of plain weave gauze 1 is rolled with a rolling machine 5. The rolling machine 5 is equipped with a roller 8 which can be moved vertically and a roller 9 which can be rotated in either direction. In the laminate of plain weave gauze 1, the number of layers can be selected appropriately and the relation between the conditions of the gauze 1 (mesh, material, and others) and the conditions of rolling (rolling load, rotating speed, and others) can also be selected appropriately. In this way, a dispersing plate 2 is made which can discharge fluid 3 in the non-rectangular (acute or obtuse angular) direction to its outflow surface 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fluid dispersion plate suitable for use as a gas dispersion plate in a fluidized bed.

[0002]

As is well known, fluid dispersion plates are widely used in various technical fields. For example, a fluidized-bed furnace, which is a kind of the same, is installed in a fluidized bed furnace used for incineration of dust, drying of powder, and the like.

[0003] Such a gas dispersion plate generally causes a predetermined gas to flow out in a direction at right angles to the surface on the outflow side, but there is also a gas distribution plate in which a predetermined gas flows out at a non-right angle (acute angle or obtuse angle). For example, in Japanese Patent Publication No. 46-10995, a large number of nozzles bent in the outflow direction are mounted, and in Japanese Patent Publication No. 48-38495, a large number of holes are formed so as to be inclined in the outflow direction. The punched products are disclosed respectively.

[0004]

However, in the above-mentioned dispersion plate which flows out in a non-right angle (acute angle or obtuse angle) direction, the work of mounting the nozzle is complicated, or high-density punching is difficult. Had the drawback of.

In view of the above-mentioned circumstances, the present invention has found that it is sufficient to roll a flat-woven woven wire mesh with a rolling roller device and manufacture it, as a result of intensive studies from various directions in order to improve such a defect. .

[0006]

That is, a method for manufacturing a fluid distribution plate according to the present invention is a method for manufacturing a fluid distribution plate which allows a fluid to flow out in a direction non-perpendicular to a surface on the outflow side. One of the tatami-woven wire meshes or a stack is manufactured by rolling with a rolling roller device.

In the present invention, the fluid may be gas, liquid, or a mixture thereof, and also relates to a stack of flat-woven woven wire mesh, the number of stacks of which can be appropriately selected, and the stack As for the means for unifying the upper and lower wire meshes, it is possible to select an appropriate means such as welding, adhesion or bolting. Further, the conditions of the flat tatami weave wire mesh (for example, mesh, material, etc.) )
And the roller rolling conditions (for example, rolling load, roller rotation speed, etc.) can be appropriately selected from various relationships.

Thus, according to the present invention, the flat-woven woven wire net 1 shown in FIG. 1 which is a plan view and FIG. 2 which is a sectional view taken along the line AA of this figure is rolled under selected predetermined conditions. By doing so, it is possible to obtain the rolled wire mesh (hereinafter, referred to as a dispersion plate) shown in FIG. 3 which is a plan view and FIG. 4 which is a BB cross-sectional view of this figure. In the plate 2, the flat woven wire mesh 1 before rolling allows the fluid 3 to flow out at a right angle to the surface 4 on the outflow side as shown by the arrow in the figure, while the surface 4 on the outflow side does not. On the other hand, it can be discharged in a non-perpendicular direction (a sharp angle or an obtuse angle direction). Hereinafter, examples and comparative examples according to the present invention will be described.

[0009]

【Example】

[Example 1] As shown in FIG. 5, the flat-woven woven wire mesh 1 was rolled by the rolling roller device 5. The flat tatami woven wire mesh 1 has a width La of 500 mm and a total length Lb of 1000 mm.
6, the vertical line 6 has a diameter of 0.57 mm, the horizontal line 7 has a diameter of 0.43 mm, and the vertical line direction is 12 mesh and the horizontal line direction is 64 mesh, and is made of SUS316. I used the one.

The rolling roller devices 5 both have a diameter of 3
A roller 8 having a length of 00 mm and a length of 550 mm was used, and the roller 8 was mounted so that the roller 8 could be moved up and down and the roller 9 could be rotated forward and backward. And rotate the rolling load at 30
It was rolled under the control of tons. During rolling, the flat woven wire mesh 1 is transferred in a direction in which the longitudinal direction is orthogonal to the axial direction of the rollers 8 and 9, and rolling is performed only once (the rollers 8 and 9 are reversely rotated to transfer the wire mesh backward). Rolling was not performed).

[Embodiment 2] As for the flat-woven woven wire mesh 1, the conditions other than the one having the vertical line direction of 64 mesh and the horizontal line direction of 12 mesh (of the type shown in FIG. 7) were used. Rolled under the same conditions as No. 1.

[Embodiment 3] Regarding the flat-woven woven wire netting 1, the diameter of the vertical wire 6 is 0.14 mm and the diameter of the horizontal wire 7 is 0.11 m.
m, vertical line direction is 50 mesh, horizontal line direction is 2
Rolling was carried out under the same conditions as in Example 1 except that a 50-mesh type (type shown in FIG. 6) was used.

[Embodiment 4] The flat tatami woven wire mesh 1 was carried out under the same conditions except that a mesh having a vertical line direction of 250 mesh and a horizontal line direction of 50 mesh (of the type shown in FIG. 7) was used. Rolling was carried out under the same conditions as in Example 1.

When the rolling rate (%) of each dispersion plate obtained in Examples 1 to 4, that is, the thickness of the flat-woven woven wire mesh 1 is Ta and the thickness of the dispersion plate 2 is Tb, {1 −
The rolling rate (%) calculated by the formula (Tb / Ta)} × 100 is 25.6% for the dispersion plate of Example 1, 24% for the dispersion plate of Example 2, and 24% for the dispersion plate of Example 3. 34.4%,
The dispersion plate of Example 4 was 37.9%.

Further, when the gas outflow characteristic of each dispersion plate (whether or not it can outflow in a direction non-perpendicular to the surface on the outflow side) was inspected by the inspection apparatus shown in FIG. It was satisfactory.

That is, in this inspection apparatus, the dispersion plate 2 is sandwiched by the flange portion of the lower transparent box body 10 and the flange portion of the transparent box body 11 having an open upper end, and these are integrated and horizontally. In the installed state, the powder is supplied from the upper end opening of the transparent box body 11, and the pipeline 12
More gas is supplied to the right of the powder (in the direction of the arrow shown)
This is done by using bread crumbs (bulk density: 0.2 g / cm3 to 0.4 g / cm3). It was possible to move in the direction of the arrow shown in the drawing. During the inspection, air (gas) is supplied at a flow rate (per unit area) of 0.67 m / sec and exhausted from the upper end opening of the transparent box body 11. In this state, the moving speed of bread crumbs (m
/ Sec.) Was video-recorded and measured.
Is 0.3 m / sec, and the dispersion plates of Examples 3 and 4 are 0.
It was 2 m / sec.

[Embodiment 5] The relationship between rolling load (ton) and rolling rate (%) was obtained by rolling under the same conditions as in Embodiment 1 except that the rolling load was changed variously. But
This is indicated by C in FIG. Further, the relationship between the rolling load (ton) and the rolling rate (%) was obtained by rolling under the same conditions as in Example 2 except that the rolling load was changed variously. Indicated by D in the middle. Further, the bread crumb movement speed (m / sec) of the obtained dispersion plate was measured under the same conditions as described above to obtain the relationship between the movement speed (m / sec) and the rolling rate (%). It is shown in FIG.

From the above-mentioned Examples 1 to 5, so long as it is a flat-woven woven wire mesh made of stainless steel, it may be of any of the types shown in FIGS. When the mesh is Ma and the horizontal mesh is Mb, various Ma / Mb, for example, (24/1
It is understood that those of 10), (30/135) or (110/24) can also be used.

Next, in each of the above-mentioned first to fifth embodiments,
One flat tatami-woven wire mesh 1 is rolled, and subsequently, an example of rolling the superposed body will be described.

[Embodiment 6] ... The flat-woven weave wire mesh 1 of Embodiment 1
(The type shown in FIG. 6) The lapped body (two-layered body) of the flat tatami weave wire mesh, which was formed by stacking the two layers and spot welding the peripheral edges of each layer, was rolled under a load of 40 tons. Other than the conditions, rolling was performed under the same conditions as in Example 1.

[Embodiment 7] ... The flat-woven weave wire mesh 1 of Embodiment 2
(Type shown in FIG. 7) The lapped body (two-layered body) of flat tatami woven wire nets, which is formed by stacking the two and stacking the peripheral ends of the laps, is rolled under a load of 40 tons. Other than the conditions, rolling was performed under the same conditions as in Example 1.

[Embodiment 8] ... The flat-woven weave wire mesh 1 of Embodiment 2
The conditions other than that the flat-woven woven wire net 1 of Example 1 were overlaid on each other and a flat-woven woven wire net was formed by spot-welding the respective overlapping peripheral end portions (two-layer body). Example 1
Was rolled under the same conditions as above.

[Embodiment 9] ... The flat-woven weave wire mesh 1 of Embodiment 2
The flat-woven woven wire mesh 1 of Example 1 is laid on top of it, and then
A flat tatami formed by stacking the flat-woven woven wire net 1 of Example 2 on top of it and further stacking the flat-woven woven wire net 1 of Example 1 on it and spot-welding the overlapping end portions. The woven wire mesh superposed body (four-layer body) was rolled under the same conditions as in Example 1.

When the gas outflow characteristics of each of the obtained dispersion plates were examined under the same conditions as described above, all of the dispersion plates were satisfactory. Bread crumbs moving speed (m / sec)
Of the dispersion plate of Examples 7 and 9 was measured to be 0.25 m / sec, and that of the dispersion plate of Example 6 was 0.35 m / s.
Second, the dispersion plate of Example 8 had a velocity of 0.30 m / sec.

Next, in each of the above-mentioned Examples 1 to 9,
The flat tatami-woven wire mesh 1 that has not been pretreated (annealed) is used, and subsequently, an example using the annealed one will be described.

[Embodiment 10] As to the flat tatami-woven wire mesh 1,
Rolling was performed under the same conditions as in Example 1 except that the one annealed (treated at 1060 ° C. for 1 hour) was used.

[Embodiment 11] As for the flat tatami-woven wire mesh 1,
Rolling was performed under the same conditions as in Example 2 except that the one annealed (treated at 1060 ° C. for 1 hour) was used.

The gas outflow characteristics of the obtained dispersion plates were satisfactory. In general, when rolling with the same load, the rolling rate becomes larger when annealed, and a higher moving speed can be obtained.

Next, in each of the above-mentioned Examples 1 to 11, the flat-woven woven wire mesh 1 is made of stainless steel, but subsequently, Examples using other materials will be described. .

[Embodiment 12] As for the flat tatami-woven wire mesh 1,
Rolling was performed under the same conditions as in Example 1 except that a brass product was used.

[Embodiment 13] As to the flat tatami-woven wire mesh 1,
Rolling was performed under the same conditions as in Example 2 except that a brass product was used.

The gas outflow characteristic of each of the obtained dispersion plates was equivalent to the bread crumb moving speed of Examples 1 and 2. From this, it is understood that a flat woven wire mesh other than stainless steel can be used.

Next, in each of the above-mentioned Examples 1 to 13, the roller 9 of the rolling roller device 5 is rotated at 1 rpm for rolling, and subsequently, when the rotation is changed variously. An example will be described.

Example 14 Rolling was carried out under the same conditions as in Example 1 except that the roller 9 of the rolling roller device 5 was rotated at 0.5 rpm.

[Embodiment 15] -Embodiment 1 is the same as Embodiment 1 except that the roller 9 of the rolling roller device 5 is rotated at 3 rpm.
Was rolled under the same conditions as above.

The gas outflow characteristics of the obtained dispersion plates were all satisfactory. The moving speed of the bread crumbs was equivalent to the moving speed of Example 1.

Next, in each of Examples 1 to 15 described above, rolling is performed only once (rolling in which the rollers 8 and 9 are reversely rotated to reversely transfer the wire mesh is not performed). An embodiment will be described in which the rollers 8 and 9 are reversely rotated after the one-time rolling to reversely transfer the wire mesh.

Example 16 Rolling was performed under the same conditions as in Example 1 except that the flat woven wire mesh 1 was reversely transferred by rotating the rollers 8 and 9 in the reverse direction.

Example 17 Rolling was carried out under the same conditions as in Example 6 except that the flat-woven woven wire netting 1 was reversely transferred by rotating the rollers 8 and 9 in reverse.

The gas outflow characteristics of the obtained dispersion plates were satisfactory. The moving speed of the bread crumbs was equal to the moving speed of Example 1. Next, a comparative example will be described.

[Comparative Example 1] ... 50 with a wire diameter of 0.18 mm
Rolling was carried out under the same conditions as in Example 1 except that a plain weave wire mesh was used.

[Comparative Example 2] ... 20 with a wire diameter of 0.05 mm
The rolling was performed under the same conditions as in Example 1 except that a 0-mesh plain weave wire mesh was used.

Comparative Example 3 ... Rolling was carried out under the same conditions as in Comparative Example 1 or 2 except that the rolling load was controlled so that the rolling rate was 10% and 50%.

When the gas outflow characteristics of each of the plates obtained in Comparative Examples 1 to 3 described above were inspected by the inspection apparatus shown in FIG. 8, all of them only fluidized the bread crumbs and indicated by arrows in the drawing. I couldn't move in the direction.

[Comparative Example 4] ... 20 with a wire diameter of 0.06 mm
Rolling was carried out under the same conditions as in Example 1 except that a 0 mesh twill wire mesh was used.

[Comparative Example 5] ... 40 for wire diameter 0.03 mm
Rolling was carried out under the same conditions as in Example 1 except that a 0 mesh twill wire mesh was used.

[Comparative Example 6] ... Rolling was carried out under the same conditions as in Comparative Example 4 or 5 except that the rolling load was controlled so that the rolling rate was 10% and 30%.

Each of the plates obtained in the above-mentioned Comparative Examples 4 to 6 was inspected for gas outflow characteristics by the inspection apparatus shown in FIG. 8. All of them only fluidized the bread crumbs and indicated by arrows in the drawing. I couldn't move in the direction.

[Comparative Example 7] The diameter of the vertical line is 0.08 m.
m, the diameter of the horizontal wire was 0.05 mm, the vertical line direction was 165 mesh, and the horizontal line direction was 800 mesh.

[Comparative Example 8] The diameter of the vertical line is 0.035 m.
m, the diameter of the horizontal wire was 0.025 mm, the vertical line direction was 325 mesh, and the horizontal line direction was 2400 mesh.

Comparative Example 9 ... Rolling was carried out under the same conditions as in Comparative Example 7 or 8 except that the rolling load was controlled so that the rolling rate was 10% and 30%.

Each of the plates obtained in Comparative Examples 7 to 8 was inspected for gas outflow characteristics by the inspection apparatus shown in FIG. 8, and all of them only fluidized the bread crumbs and indicated by arrows in the drawing. I couldn't move in the direction. Therefore, from Comparative Examples 1 to 9 described above, it is understood that wire meshes other than the flat tatami weave wire mesh are not suitable.

The dispersion plate according to the present invention is suitable not only for gas but also for liquid, and therefore, for bridge breakers of powder storage tanks, for air conveyors, for stirring, for air slides, or for reaction tanks. It can be used for various purposes such as solid-liquid contact in a cleaning tank.

[0054]

EFFECTS OF THE INVENTION According to the present invention, a dispersion plate capable of flowing out a predetermined fluid in a direction non-perpendicular to the surface on the outflow side can be easily used without performing a troublesome work such as mounting a nozzle or punching. A manufacturing method that can be obtained is obtained.

[Brief description of drawings]

FIG. 1 is a plan view of a flat woven wire mesh.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a plan view of a dispersion plate.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a perspective view showing a rolling mode by a rolling roller device.

FIG. 6 is a plan view showing the directionality of meshes of a flat-woven woven wire mesh.

FIG. 7 is a plan view of another example showing the directionality of the mesh of the flat-woven woven wire mesh.

FIG. 8 is a perspective view of the inspection device.

FIG. 9 is a diagram showing the relationship between rolling load and rolling rate.

FIG. 10 is a diagram showing the relationship between bread crumb movement speed and rolling rate.

[Explanation of symbols]

 1 flat tatami weave wire mesh 2 dispersion plate 3 fluid 4 outflow side surface 5 rolling roller device 6 vertical line 7 horizontal line

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Kikuchi Ken 1-1, Sonoyama, Otsu, Shiga Toray Engineering Co., Ltd. (72) Tatsuro Nishizawa 45-13 Terayama, Hirono-cho, Uji-shi, Kyoto 72) Inventor Hideyuki Otsuki Young Plaza 213, 3 Kohara Kamiya, Tanabe-cho, Tsuzuki-gun, Kyoto Prefecture

Claims (1)

[Claims] 1. A method for producing a fluid dispersion plate, which is capable of outflowing a fluid in a direction non-perpendicular to the surface on the outflow side, wherein one sheet or a stack of flat woven wire mesh is rolled by a rolling roller device. A method for manufacturing a fluid dispersion plate, comprising: