JP3794370B2 - Molten slag treatment tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a molten slag treatment water tank in which dripped molten slag is rapidly cooled and solidified to form granular granulated slag.
[0002]
[Prior art]
As this type of molten slag treatment water tank, for example, the one shown in Non-Patent Document 1 is known.
That is, the molten slag flowing out from the rotary kiln is rapidly cooled and solidified to form granular granulated slag, and an overflow part that maintains the water surface at a predetermined level by overflowing the water, and above the overflow part A slag discharge portion located; a bottom surface disposed between the overflow portion and the slag discharge portion; a first inclined surface inclined downward from the overflow portion toward the bottom surface; and from the slag discharge portion. A second inclined surface inclined downward toward the bottom surface, a first support wheel disposed above the overflow portion, a second support wheel disposed above the slag discharge portion, and a first An endless chain wound around the support wheel and the second support wheel, and a plurality of scrapers provided on the endless chain. .
[0003]
In the endless chain, the lower portion between the first and second support wheels sequentially moves along the first inclined surface, the bottom surface, and the second inclined surface, so that a bottom portion such as the bottom surface is formed by the scraper. The granulated slag accumulated in the slag is scraped out to the slag discharge part. In addition, the scraper is stretched over two endless chains arranged in parallel.
[0004]
In the molten slag treatment water tank configured as described above, the granulated slag passes between the endless chains located at the upper and lower portions between the first and second support wheels and between the scrapers, and the bottom surface. And so on. Therefore, the granulated slag collected at the bottom can be surely scraped out to the slag discharge part by each scraper.
[0005]
[Non-Patent Document 1]
Shigaki Masanobu “Picture and Waste Incineration Technology Revised 3rd Edition” Ohm Co., Ltd., October 20, 2000, p. 131, FIGS. 5 and 16
[0006]
[Problems to be solved by the invention]
However, in the molten slag treatment water tank, since the granulated slag that moves downward slightly accumulates on the endless chain or scraper located at the upper part between the first and second support wheels, When rotating through the first support wheel, it falls to the overflow part. For this reason, there existed a possibility that the slag might be clogged in the drain pipe etc. which were piping by the overflow part.
[0007]
This invention is made | formed in view of the said situation, and makes it a subject to provide the molten slag processing water tank which can prevent the fall of the granulated slag to an overflow part.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention described in claim 1 is a molten slag treatment water tank that rapidly cools and solidifies the molten slag to be dropped into granular granulated slag, and the water surface is made predetermined by overflowing water. A first support wheel and a second support wheel for winding the endless chain are installed above the overflow portion maintained at the level and the slag discharge portion positioned above the overflow portion, and the endless chain The first inclined surface in which the lower part between the first and second support wheels is inclined downward from the overflow portion toward the bottom surface, and is inclined upward from the bottom surface and the bottom surface toward the slag discharge portion. By moving sequentially along the second inclined surface, the above collected at the bottom by the scraper provided in the endless chain The crushed slag is scraped out to the slag discharge part, and above the overflow part, there is an inclined cover with the first inclined surface side below at least below the movement range of the endless chain and scraper. It is characterized by being provided.
[0009]
According to a second aspect of the present invention, in the first aspect of the present invention, the overflow portion is provided with a drainage port for discharging the overflowed water, and the drainage communicates with the drainage port. A drain pipe having a funnel portion for receiving water flowing out from the drain pipe is installed below the drain pipe, and the water pipe is provided with the water pipe below the drain pipe. A filter for preventing the slag from flowing out into the drain pipe is provided.
[0010]
In the first and second aspects of the present invention, the granulated slag may accumulate on the endless chain or the scraper located at the upper part between the first and second support wheels. When the position of the endless chain changes from the upper part to the lower part in the first support wheel, it falls. However, since an inclined cover with the first inclined surface side downward is provided at least above the endless chain and scraper moving range above the overflow portion, the granulated slag dropped from the endless chain and scraper Moves to the first inclined surface through the inclined cover.
[0011]
Therefore, it is possible to prevent the granulated slag from falling to the overflow portion.
[0012]
In the invention according to claim 2, since the filter is provided in the funnel portion that receives the water flowing out from the drain pipe, the granulated slag is discharged from the overflow section through the drain pipe together with the water in the water tank, for example. Even if this happens, it is possible to prevent the granulated slag from flowing into the drain pipe on the downstream side. And since the filter is provided in the funnel part, there exists an advantage that the collection amount of granulated slag can be grasped | ascertained visually visually, and measures, such as replacement | exchange of a filter, can be taken quickly.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
[0014]
As shown in FIG. 5, the molten slag treatment water tank 5 shown in this embodiment melts fly ash, incineration ash, etc. (hereinafter referred to as “incineration ash etc.”) A in the melting furnace 1, and from the melting furnace 1 The molten slag B to be dripped is rapidly cooled and solidified by cooling water (water) W to form granular granulated slag C (see FIG. 2), and this granulated slag C is supplied to, for example, a hopper (not shown) and then discharged by a dump truck or the like. It is like that.
[0015]
The melting furnace 1 includes a melting furnace main body part 11, a hopper part 12 provided adjacent to the melting furnace main body part 11, and incineration ash A or the like charged into the hopper part 12 in the melting furnace main body part 11. A pusher 13 for extruding and a burner 14 for heating the inside of the melting furnace main body 11 are provided, and the molten slag B generated in the melting furnace main body 11 is supplied to the molten slag treatment water tank 5 through the discharge port 11a. Is supposed to be leaked.
[0016]
Moreover, the said melting furnace 1 melt | dissolves incineration ash etc. A efficiently by also using the reaction heat of the said thermite agent by supplying a thermite agent with incineration ash etc. A.
The thermite agent combusts powdered red mud (iron oxide-containing waste) and aluminum dross (aluminum-containing waste) so that the molar ratio of the iron oxide component to the aluminum component is 1: 2. Consists of things packed in sex bags.
When such a thermite agent is used, there is an advantage that the incineration ash and the like A can be efficiently melted as described above, and waste such as red mud and aluminum dross can be treated at the same time. There are advantages you can do.
[0017]
On the other hand, the molten slag processing water tank 5 has a structure mainly including a water tank body 6 and a chain conveyor 7.
[0018]
The water tank body 6 includes an overflow portion 61 that maintains the water surface Wa at a predetermined level by overflowing the cooling water W, a slag discharge portion 62 that is located above the overflow portion 61, an overflow portion 61, and a slag discharge portion 62. , A first inclined surface 64 inclined downward from the overflow portion 61 toward the bottom surface 63, and a second inclination inclined downward from the slag discharge portion 62 toward the bottom surface 63. The surface 65, the side plate portion 66 disposed on each side of the first inclined surface 64, the bottom surface 63, the second inclined surface 65, and the like, and the first end plate portion disposed on the end portion on the overflow portion 61 side 661, a second end plate portion 662 provided at the end on the slag discharge portion 62 side, an upper plate portion 67 disposed above the first inclined surface 64, the bottom surface 63, the second inclined surface 65, and the like. Be equipped To have.
[0019]
The upper plate portion 67 is provided with an opening 67 a for dropping the molten slag B at a position directly above the bottom surface 63. Further, a supply port 67b for the cooling water W is provided in the vicinity of the opening 67a. And the low temperature cooling water W is supplied from the supply port 67b, and the amount of the cooling water W according to this supply amount flows out from the overflow part 61, whereby the temperature of the cooling water in the water tank body 6 is within a predetermined range. It is designed to be controlled within.
[0020]
As shown in FIG. 1, the overflow portion 61 is formed in a concave shape as a whole, and a drain port 61 a for discharging the overflowing cooling water W is provided at the bottom of the overflow unit 61, and the drain port 61 a A drainage pipe 81 that communicates with the pipe is directed downward. A drain pipe 83 having a funnel portion 82 that receives the cooling water W flowing out from the drain pipe 81 is installed below the drain pipe 81. The funnel portion 82 is provided with a filter 84 that prevents the granulated slag C from flowing out to the drain pipe 83.
[0021]
As shown in FIG. 5, the chain conveyor 7 includes a first sprocket (first support wheel) 71 arranged above the overflow portion 61 and a second sprocket (above the slag discharge portion 62). A second support wheel) 72, an endless chain 73 wound around the first sprocket 71 and the second sprocket 72, and a plurality of scrapers 74 (see FIG. 1) provided on the endless chain 73. ing.
[0022]
The first sprocket 71 is constituted by a pair of ones arranged on the first shaft 71a at a predetermined interval in the axial direction. Similarly, the second sprocket 72 is constituted by a pair of ones arranged on the second shaft 72a at the same interval as the first sprocket 71. Further, the second shaft 72a is a drive shaft, and the first shaft 71a is a driven shaft.
[0023]
The endless chain 73 includes a pair of ones wound around one first sprocket 71 and the second sprocket 72 and a pair wound around the other first sprocket 71 and the second sprocket 72. Consists of things.
Moreover, as shown in FIGS. 1-3, the endless chain 73 is comprised by what connected the both ends of each link 73a arrange | positioned cyclically | annularly via the pin 73b.
[0024]
The scraper 74 is formed in a triangular cylindrical shape by welding a concave portion of a mountain-shaped member 74a having a shape in which flat plates are combined in an L shape with a swash plate 74b. As the angle member 74a, for example, an equilateral angle steel or an unequal angle iron is used, and as the swash plate 74b, for example, a flat steel is used.
[0025]
And the scraper 74 is provided so that it may span over each link 73a arrange | positioned in parallel at predetermined intervals. In this case, the scraper 74 is provided so as to protrude to the outer side of the endless chain 73 configured in an annular shape, and one surface 74 c arranged at a right angle is directed in a direction orthogonal to the traveling direction of the endless chain 73. In this state, it is fixed to each link 73a.
[0026]
In addition, the endless chain 73 has a lower portion between the first and second sprockets 71 and 72 that sequentially moves along the first inclined surface 64, the bottom surface 63, and the second inclined surface 65. The granulated slag C accumulated on the bottom portion such as the bottom surface 63 by the scraper 74 is scraped out to the slag discharge portion 62.
[0027]
On the other hand, as shown in FIG. 1, an inclined cover 68 is provided above the overflow portion 61 so as to incline so that the first inclined surface 64 side is at least below the moving range of the endless chain 73 and the scraper 74. It has been. In other words, the inclined cover 68 has left and right side edges reaching the left and right side plates 66, an upper edge reaching the first end plate 661, and a lower edge on the upper portion of the first inclined surface 64. It is formed so as to overlap with an interval.
[0028]
In the molten slag granulated water tank 5 configured as described above, when the molten slag B is dropped into the cooling water W from the discharge port 11a through the opening 67a, the molten slag B is rapidly cooled and solidified. As a result, the granulated slag C is accumulated, and the granulated slag C passes between the endless chain 73 and the scraper 74 located at the upper part and the lower part and accumulates on the bottom part such as the bottom face 63. At this time, the granulated slag C tends to be deposited on the scraper 74 located at the upper portion, but since the concave portion of the mountain-shaped member 74a is covered with the swash plate 74b, the granulated slag C is deposited on the scraper 74 as much as possible. Can be prevented.
[0029]
Then, when the endless chain 73 and the scraper 74 located at the upper part change their positions to the lower part via the first sprocket 71, the granulated slag C slightly deposited on the scraper 74 or the like falls. However, since the inclined cover 68 is provided above the overflow portion 61, the granulated slag C falling from the endless chain 73 and the scraper 74 moves to the first inclined surface 64 via the inclined cover 68. become.
[0030]
Therefore, it is possible to prevent the granulated slag C from falling to the overflow part 61 and to reliably prevent the granulated slag C from being clogged in the drain pipe 81 piped to the overflow part 61.
[0031]
Moreover, since the filter 84 is provided in the funnel portion 82 that receives the cooling water W flowing out from the drain pipe 81, the granulated slag C flows into the overflow section 61 together with the cooling water W, for example, and is discharged through the drain pipe 81. Even if this happens, it is possible to prevent the granulated slag C from flowing out to the drainage pipe 83 on the downstream side. Moreover, since the filter 84 is provided in the opened funnel portion 82, the recovered amount of the granulated slag C can be immediately confirmed visually, and measures such as replacement of the filter 84 can be taken quickly. There is an advantage that you can.
[0032]
【The invention's effect】
As described above, according to the first and second aspects of the invention, the inclination is above the overflow portion and at least below the movement range of the endless chain and the scraper, with the second inclined surface side below. Since the cover is provided and the granulated slag dropped from the endless chain or scraper can be moved to the first inclined surface via the inclined cover, the granulated slag is prevented from falling to the overflow part. Can do.
[0033]
According to invention of Claim 2, since the filter is provided in the funnel part which receives the water which flows out from a drain pipe, the granulated slag goes through the drain pipe from the overflow part with the water in a water tank, for example. Even if it is discharged, it is possible to prevent the granulated slag from flowing to the drain pipe on the downstream side. And since the filter is provided in the funnel part, there exists an advantage that the collection amount of granulated slag can be grasped | ascertained visually visually, and measures, such as replacement | exchange of a filter, can be taken quickly.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of a molten slag treatment water tank shown as an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a principal part showing a portion along the bottom surface of the molten slag treatment water tank.
FIG. 3 is a perspective view of a main part showing a chain conveyor of the molten slag treatment water tank.
4 is a view showing the molten slag-treated water tank, and is a view taken in the direction of arrow IV in FIG. 1;
FIG. 5 is a conceptual diagram showing an overall configuration of the molten slag treatment water tank.
[Explanation of symbols]
5 Molten Slag Treatment Water Tank 6 Water Tank Body 7 Chain Conveyor 61 Overflow Portion 61a Drainage Port 62 Slag Discharge Portion 63 Bottom Surface 64 First Inclined Surface 65 Second Inclined Surface 68 Inclined Cover 71 First Sprocket (First Support Wheel )
72 Second sprocket (second support wheel)
73 Endless chain 74 Scraper 81 Drain pipe 82 Funnel part 83 Drain pipe 84 Filter B Molten slag C Granulated slag

Claims (2)

A molten slag-treated water tank that rapidly cools and solidifies the molten slag to be dropped into granular granulated slag,
A first support wheel and a second support for winding an endless chain above each of an overflow portion for maintaining the water surface at a predetermined level by overflowing water and a slag discharge portion located above the overflow portion A ring,
The endless chain includes a first inclined surface in which a lower portion between the first and second support wheels is inclined downward from the overflow portion toward the bottom surface, the bottom surface and the bottom surface toward the slag discharge portion. By sequentially moving along the second inclined surface that is inclined upward, the above-mentioned granulated slag accumulated at the bottom by the scraper provided in the endless chain is scraped to the slag discharge part,
A molten slag treatment water tank, wherein an inclined cover with the first inclined surface side below is provided above the overflow portion at least below the moving range of the endless chain and the scraper. The overflow part is provided with a drainage port for discharging the overflowed water, and a drainage pipe communicating with the drainage port is piped downward,
Below the drain pipe, a drain pipe having a funnel portion for receiving water flowing out from the drain pipe is installed,
The molten slag treatment water tank according to claim 1, wherein the funnel part is provided with a filter for preventing the granulated slag from flowing out to the drain pipe.

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