JPS5818593B2 - Smelt Kokeikashiyoriyo Kaitenbanno Reikiyakuhouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cooling a rotating plate for smelt solidification treatment.

In the present invention, when waste liquid, for example, Na-based pulp cooking waste liquid, is incinerated in a spray combustion furnace or the like, a rotating plate is installed in a cooling chamber at the bottom of the incinerator to remove the high-temperature smelt of Na salt generated in the furnace.
This invention relates to a method for cooling a rotary plate for smelt solidification processing, which aims to uniformly cool the rotary plate while always keeping the cooling water in the rotary plate full of liquid during cooling and granular solidification processing. .

Generally, when cooling the inside of a rotating disk using a refrigerant such as water, it is difficult to keep the inside of the rotating disk full of liquid at all times, and the refrigerant moves within the disk due to the formation of cavities. The body loses its dynamic balance and induces the generation of vibrations.

In addition, when the rotating disk is installed in a high-temperature atmosphere, the temperature of the hollow section increases due to heat transfer, creating a temperature difference with the section cooled by other refrigerants, causing thermal distortion of the rotating disk. Causes damage.

The present invention eliminates these drawbacks by forcing the flow of cooling water in the rotating disk to concentrate at the central top, thereby eliminating the effects of agitation of the cooling water due to the formation of cavities or local temperature increases. To solve this problem and make it possible to uniformly cool the disk while always keeping the inside of the disk full of liquid.

The present invention provides a rotating shaft 10 consisting of a double tube consisting of a concentric inner tube and an outer tube.
The refrigerant is caused to overflow from the outer tube to the inner circumferential edge of the conical rotary plate 3, which is spun at the top of the rotary plate 3, and the refrigerant flows along the conical surface of the rotary plate 3, and the The refrigerant is collected by flowing into the inner tube, suppressing the agitation caused by the rotation of the refrigerant in the rotary plate 3, and uniformly cooling the rotary plate while holding the dynamic bar of the rotary plate 3; Provided is a method for cooling a surface rolling plate for smelt solidification treatment, characterized in that the smelt falling onto the rotating plate can be cooled.

Hereinafter, one embodiment of this invention will be described in detail with reference to the drawings.

In Fig. 1, 1.1 shows the shape of the cooling chamber at the bottom of the incinerator, and 2 shows the shape of the cooling chamber at the bottom of the incinerator, and 2 is generated in the slash-and-burn furnace, falls onto a rotating disk, and is cooled.
The figure shows a high-temperature smelt of Na salt subjected to granular solidification.

Cooling water for cooling the rotating disk 3 is supplied from a nozzle 13 to the rotating shaft 10 which is rotated by a pulley 11 connected to a drive device (not shown) through a fixed seal box 14 shown in FIG. Inlet 16 on the outer tube side
The water flows through the passageway 5 and is supplied around the rotary plate 3 through the water passageway 5 which also serves as reinforcement.

The rotating disk 3 is used to prevent mixed air or dissolved oxygen in the cooling water from degassing and stagnation within the disk, and to perform the original functions of the rotating disk, such as cooling high-temperature smelt and solidifying it into granules. In order to perform the
The cooling water supplied from around the disk is partitioned by a radial partition plate 4 that also serves as reinforcement of the disk, and while the water is forced to move due to the rotation of the disk, it flows from the overflow port 6 at the top of the center to the rotation axis. 10 and is discharged from the cooling water outlet nozzle 15.

As described in detail above, according to the method of the present invention, the inside of the disk is always filled with liquid and cooled uniformly without any mixed air or degassed air remaining inside the disk. This system maintains the dynamic balance of the rotating disk by forcing water to agitate, allowing stable continuous operation of smelt deposition and granular solidification.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a rotating disk showing an embodiment of the present invention, and Fig. 2 shows a detailed part of the section "A" in Fig. 1. 1. Furnace lower cooling chamber; 2... High temperature falling smelt, 3... Rotating plate, 4... Partition plate, 5... Water passage, 6... Overflowing. flow mouth,
7... Rotating shaft inner tube, 8... Rotating shaft seal portion, 9... Bearing, 10... Rotating shaft (
outer tube), 11...Pulley, 12...
Bearing, 13... Cooling water inlet nozzle, 14...
... Seal box, 15 ... Cooling water outlet nozzle, 16 ... Cooling water inlet, 17 ...
・Grand Patsukin, 18...Grand presser foot.

Claims (1)

[Claims] 1. The refrigerant is allowed to overflow from the outer tube to the inner peripheral edge of the conical rotary plate 3 fixed to the top of the rotating shaft 10, which is made up of a double concentric inner tube and an outer tube, and the refrigerant is transferred to the rotary plate. The refrigerant flows inside the rotary plate 3 along the conical shape 1 and is collected by flowing into the inner pipe at the top of the refrigerant. A method for cooling a rotary plate for smelt solidification processing, characterized in that the rotary plate is uniformly cooled while holding the rotary plate, thereby cooling the smelt falling onto the rotary plate.