JP6414123B2 - Slurry distributor - Google Patents

Description

  The present invention relates to a distributor (slurry distributor; slurry distributor) used when supplying a slurry (solid-liquid mixture) to a slurry processing apparatus.

  For example, when granulated slag is produced using molten slag discharged from a blast furnace or the like as a raw material, a large amount of cooling water is injected into the molten slag, and the molten slag becomes fine particles by the injection power of the cooling water. Solidifies while being crushed. Since the slag that has been crushed and solidified by this cooling water (granulated slag) is in a slurry state (granulated slag slurry) mixed with water, it is supplied to the solid-liquid separator (dewatering device), and the granulated slag slurry Water is separated from the water to obtain granulated slag.

  FIG. 5 is a schematic diagram showing an example of a granulated slag production apparatus used when producing granulated slag as described above. As shown in FIG. 5, the molten slag 1 is supplied to the water granulating device 5, crushed and solidified with cooling water, and then supplied as a granulated slag slurry 2 to the rotary dehydrator 6 via the distributor 7. The And water is isolate | separated from the granulated slag slurry 2 with the rotary dehydrator 6, and it is carried out by the conveyor 8 as the granulated slag 3 (for example, patent document 1).

  Here, the distributor 7 used when supplying the granulated slag slurry 2 to the rotary dehydrator 6 distributes the granulated slag slurry 2 evenly along the rotation axis direction (horizontal direction) of the rotary dehydrator 6. It is for supply.

  FIG. 2 shows a conventional distributor 90. 2A is a plan view and FIG. 2B is a side view.

  As shown in FIG. 2, the distributor 90 includes a cylindrical distributor main body 91 extending in the horizontal direction, an inlet 92 provided on the inlet side of the distributor main body 91, and an outlet side of the distributor main body 91. An outlet 93 provided, a flow dividing plate 94 for dividing the flow in the distributor main body 91 into three in the width direction, and 3 provided on the lower surface of the distributor main body 91 corresponding to the three flow splits. A single drop port 95 is provided.

  Thereby, in this distributor 90, the granulated slag slurry which flowed in from the inflow port 92 is divided into three parts and flows in the distributor main body 91, and is dropped and supplied from the respective drop ports 95 into the rotary dehydrator. It has come to be.

JP 2001-180989 A

  However, in the conventional distributor 90 described above, most of the granulated slag slurry 2 has fallen in the vicinity of the inlet 92, and it is not sufficient to distribute and drop evenly in the longitudinal direction (horizontal direction). There is a problem that the granulated slag slurry 2 stays in the distributor main body 91 and the amount of the granulated slag slurry 2 that is not supplied to the rotary dehydrator 6 is large.

  The present invention has been made in view of the above circumstances, and as a slurry distributor used when supplying a slurry (for example, a granulated slag slurry) to a slurry processing apparatus (for example, a rotary dehydrator), a slurry is used. It is an object of the present invention to provide a slurry distributor that can evenly distribute and supply the slurry and also can eliminate the retention of slurry.

  In order to solve the above problems, the present invention has the following features.

  [1] A slurry distributor used for supplying slurry to a slurry processing apparatus, which is installed in a cylindrical distributor main body extending in a horizontal direction and an inlet side in the distributor main body, and moves the slurry flow up and down A slurry distributor comprising: a rectifying plate that rectifies in a straight line; and a plurality of drop openings that are provided on a lower surface of the distributor main body and are linearly arranged at equal intervals along the longitudinal direction.

  [2] The slurry distributor according to [1], wherein the slurry is a granulated slag slurry, and the slurry processing apparatus is a rotary dewatering apparatus.

  In the slurry distributor of the present invention, when supplying slurry (for example, granulated slag slurry) to a slurry processing apparatus (for example, rotary dewatering apparatus), it is possible to distribute and supply the slurry evenly, Slurry stagnation can also be eliminated. As a result, the throughput of the slurry processing apparatus can be improved.

It is a figure which shows the distributor in one Embodiment of this invention. It is a figure which shows the conventional distributor. It is a figure which shows the analysis result of the granulated slag slurry fall amount in the example of this invention. It is a figure which shows the analysis result of the granulated slag slurry fall amount in a prior art example. It is a schematic diagram which shows the manufacturing apparatus of a granulated slag.

  Embodiments of the present invention will be described with reference to the drawings. Here, the case where the granulated slag slurry is supplied to the rotary dehydrator will be described in mind.

  1A and 1B are diagrams showing a distributor 10 according to an embodiment of the present invention. FIG. 1A is a plan view and FIG. 1B is a side view.

  As shown in FIG. 1, the distributor 10 includes a tubular distributor body 11 extending in the horizontal direction, an inlet 12 provided on the inlet side of the distributor body 11, and an outlet side of the distributor body 11. The outlet 13 provided, the rectifying plate 14 provided on the inlet side of the distributor main body 11 to rectify the flow in the distributor main body 11 up and down, and a plurality of (here, provided) on the lower surface of the distributor main body 11 10) drop openings 15 are provided.

  Here, the rectifying plate 14 is inclined downward from the inlet side of the distributor main body 11 in the longitudinal direction, and has a drop port 15 (here, close to the inlet side 1 near the inlet side of the distributor main body 11). The upper half of the individual drop openings 15) is covered. The plurality of drop openings 15 are linearly arranged at equal intervals along the longitudinal direction of the distributor body 11.

  Thereby, in this distributor 10, the granulated slag slurry which flowed in from the inflow port 12 is rectified up and down by the baffle plate 14 provided in the inlet side, and the flow below the baffle plate 14 is the flow of the distributor main body 11. It flows toward the drop port 15 close to the inlet side, and the flow above the rectifying plate 14 flows toward the drop port 15 close to the outlet side of the distributor body 11. Then, it is dropped and supplied into the rotary dehydrator from the respective drop openings 15 arranged linearly at equal intervals along the longitudinal direction.

  Thus, the distributor 10 in this embodiment includes the inflow port 12 provided on the inlet side and the plurality of drop ports 15 arranged linearly at equal intervals along the longitudinal direction. In addition, when the granulated slag slurry is supplied to the rotary dehydrator, the granulated slag slurry can be evenly distributed and supplied, and the retention of the granulated slag slurry can be eliminated. As a result, it is possible to improve the throughput of the rotary dehydrator (improving the amount of granulated slag). In addition, uneven wear of the rotary dehydrator due to uneven distribution and supply of the granulated slag slurry is suppressed, and equipment protection can be achieved.

  In this embodiment, the case where the granulated slag slurry is supplied to the rotary dehydrator is described in mind, but the present invention can also be applied to a case where another slurry is supplied to the slurry processing apparatus. .

  In order to confirm the effectiveness of the present invention, in consideration of the case where the granulated slag slurry is supplied to the rotary dehydrator, the distribution and supply uniformity of the slurry in the distributor and the retention of the slurry by simulation calculation (fluid analysis) The sex was verified.

  An example of the present invention is a case where the distributor 10 (FIG. 1) of the above-described embodiment of the present invention is used, and a conventional example is a case where the conventional distributor 90 (FIG. 2) is used.

  In the analysis method, it is assumed that warm water (granulated slag slurry) flows in by turbulent flow, the height position 1 m below the distributor is the water surface, and the water surface is the slip surface. In addition, it was assumed that the dropping port surface was an atmospheric pressure surface, and water slag particles having a diameter of 15 mmφ uniformly flowed in at 0.77 m / s in the horizontal direction from the inlet surface. Granulated slag particles hitting the wall (such as the inner wall of the distributor body) will bounce off, and the granulated slag slurry will fall at the outlet.

  And the part from an inflow port to an outflow port was divided | segmented into seven areas, and the fall amount (fall amount distribution) of the granulated slag slurry in each area was calculated. The amount of residence in the distributor was also calculated.

  The analysis result of the example of the present invention is shown in FIG. 3, and the analysis result of the conventional example is shown in FIG.

  First, as shown in FIG. 4, in the conventional example, most of the granulated slag slurry fell near the inlet side, and the granulated slag slurry did not reach the outlet side. Moreover, the amount of residence in the distributor was large.

  On the other hand, as shown in FIG. 3, in the example of the present invention, the fall of the granulated slag slurry was confirmed even near the outlet. Moreover, there was no stagnation in the distributor.

  This confirmed the effectiveness of the present invention.

DESCRIPTION OF SYMBOLS 1 Molten slag 2 Granulated slag slurry 3 Granulated slag 5 Granulated apparatus 6 Rotating dehydrator 7 Distributor 8 Conveyor 10 Distributor 11 Distributor main body 12 Inlet 13 Outlet 14 Current plate 15 Drop port 90 Distributor 91 Distributor Body 92 Inlet 93 Outlet 94 Diverging plate 95 Falling port

Claims (2)

  A slurry distributor used for supplying slurry to a slurry processing apparatus, which is installed on a cylindrical distributor main body extending in a horizontal direction and an inlet side in the distributor main body, and rectifies the flow of the slurry up and down A slurry distributor comprising: a rectifying plate; and a plurality of drop ports provided on a lower surface of the distributor main body and arranged linearly at equal intervals along a longitudinal direction.   The slurry distributor according to claim 1, wherein the slurry is a granulated slag slurry, and the slurry processing apparatus is a rotary dewatering apparatus.

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