JPS6020665B2 - Heat recovery device for high-temperature objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for recovering heat retained in an amorphous high-temperature object emitted from an electric furnace, a melting furnace, a heating furnace, or the like.

Conventionally, most of the molten products or molten slag from electric furnaces and melting furnaces, and the high-temperature solids in heating furnaces were allowed to cool naturally, and the enormous amount of heat they held was not recovered at all.

In recent years, from the standpoint of energy conservation, attempts have been made to recover and utilize the thermal energy of these heat-radiating objects, but effective heat recovery methods and devices have not yet been established. The present invention relates to a system for transferring high-temperature molten or solid matter using a conveying device, exchanging heat with other fluids such as air or water, and recovering the retained heat.

The present invention is a heat recovery device that constitutes a heat radiation chamber that includes a transport device for moving a high-temperature object. The conveying device of the present invention is characterized in that it serves to promote the dissipation of heat from the high-temperature object, that is, to increase the surface area of the high-temperature object, at the same time as the normal movement of the high-temperature object. The transport device is a device in which movable hardware and fixed hardware are installed alternately, the movable hardware is attached to a sliding frame with bolts, and the sliding frame is reciprocated by a crankshaft.

Rollers are attached to the sliding frame and move on fixed guide rails. Fixed hardware, fixed guide rails, etc. are attached to the equipment frame. This device is a device that continuously transports Hagi cargo forward by reciprocating movement of movable hardware. When a high-temperature molten material is placed in a conveying device, it falls between a movable metal piece and a fixed metal piece, and is compressed or pulled while being cooled by the movable metal piece to obtain a relatively small lump-like object. When the object solidifies, the object rolls between the movable hardware and the fixed hardware, thereby maximizing the surface area of the object. Furthermore, if the material is used as a high-temperature solid object, heat can be dissipated by rolling and moving the object.

The heat dissipation chamber of the present invention has a side wall lined with a heat insulating material to close off the outside air, an input hole for introducing a high-temperature object and intake of air at one end of the upper surface, and an exhaust hole at the end of the upper surface.

For example, a double damper or air curtain structure is used to prevent hot air from escaping at the same time as a high-temperature object moves and radiates heat. Convection plates are provided at regular intervals on the upper surface of the heat radiation chamber to measure gas convection and promote thermoluminescence. The convection plate is made of a heat-resistant material and has a structure similar to that of an inflator such as a pump, blower, or fan. Furthermore, when the heat utilization destination requires steam or hot liquid such as overflowing water, a heat radiation boiler can be constructed on the top surface to obtain steam. Hereinafter, the present invention will be explained by examples.

The example is an example of molten calcium carbide (hereinafter referred to as carbide) flowing out from an electric furnace. FIG. 1 is a cross-sectional view of the apparatus of the present invention.

The carbide charged into the charging row is placed on the conveying device 2. The transport device 2 is provided with movable hardware 3 and fixed hardware 4 alternately as shown in FIG. Figure 3 is arrow A in Figure 2.
- indicates A. The carbide placed on the movable hardware 3 is placed on the fixed hardware 4 while rolling due to the reciprocating motion of the movable hardware 3. Incidentally, even if the movable hardware pulls back the carbide due to the backward movement, it is pushed back by the stopper 5, moves, and is placed on the fixed hardware 4. The carbide placed on the fixed hardware 4 is pushed by the movable hardware 3, and is moved to the next movable hardware 3.
It will be posted on. In this way the carbide is inverted,
It is moved by hardware while rolling.

In order to flip and roll the carbide, the height of the metal piece needs to be 2 to 1 beats high as a lump of a high-temperature object. Furthermore, the speed of the reciprocating motion of the movable metal object is determined by the amount of carbide introduced and the size of the solidified carbide. For example, in the example, the conveyance amount is 5 to 1 m/day. The carbide at the end of the transport device is dropped into the outlet. The exhaust port has a double damper 6 structure that prevents hot air from being released. The transport device 2 is surrounded by a heat dissipation chamber lined with a heat insulating material 8, as shown in FIGS. 1 and 2. Intake is from inlet 1
Inhale while exchanging some heat with the carbide ~ Obtain high temperature gas while exchanging heat with the carbide on the hardware,
Air is drawn by a blower through the exhaust hole and sent to the heat utilization site.

In order to improve heat exchange between the carbide and the gas, an inbella-shaped heat-resistant structure is attached as a convection plate 9 that causes gas to convect between the upper surface insulation material and the metal fittings. FIG. 4 shows the plane BB in the direction of arrows in FIG. 2, and shows a boiler 0 for obtaining steam between the upper surface and the metal fittings in the apparatus of the present invention. This boiler-type heat recovery system is effective when the heat source requires steam or overflowing water. In this embodiment, since the exhaust temperature is relatively low at 80 to 300°C, a blower is used to connect the exhaust port 7 to the input port 1.
We adopted a method that promotes effective use of heat by recycling it into the air.

The above is the case with carbide, but it is an efficient heat recovery device that can be applied to anything that requires cooling keystrokes or other amorphous high-temperature objects.

Brief Description of the Drawings Figure 1 is a side view (sectional view) showing an embodiment of the present invention, Figure 2 is a side view (cross-sectional view) showing an embodiment of the present invention.
The figure is a plan view, FIG. 3 is a detailed side view of the hardware of the slow transport device, and FIG. 4 is a front view of the boiler type heat recovery device.

1...Input port, 2...Transportation device, 3...
・Movable hardware ~ 4...Fixed hardware ~ 5...0 stopper, 6 double damper, 7 exhaust port, 8...cover,
9...Convection plate, 10...Boiler omon 1 drawing 2 drawings 3 drawings 4 drawings

Claims (1)

[Scope of Claims] 1. Includes a transport device in which a fixed hardware for moving a high-temperature object and a movable hardware are arranged after each other, an injection hole for introducing the high-temperature object and intake air from one end of the upper surface, and a gas convection plate or A heat recovery device for a high-temperature object, characterized in that a heat radiation boiler is provided, and an exhaust hole and a cooling object discharge port are provided at the other end to form a closed heat radiation chamber. 2. The apparatus for recovering retained heat of a high-temperature object according to claim 1, wherein the outlet of the cooled object has a double damper or air curtain structure.