JPS6050305A - Ash handling device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of explosion through prevention of rapid cooling of clinker and to cause the clinker to be apt to be crushed through prevention of aggregation of the clinker, and to sharply improve ash handling performance, by a method wherein cooling water is injected to the clinker, gradually cooled by cooling water in a trough, to cool it entirely. CONSTITUTION:A sealing trough 10, containing sealing water (c), is securly located through a packing 11 along a flange 12b attached to the upper edge parts of side plates 12a of a trough 12, sealing plates 4a and 4b are suspended from a furnace bottom 1a, and the lower end part of a sealing plate 4b is emerged in the sealing water (c) to seal water-tightly between the furnace bottom 1a and the trough 12. Injection nozzles 15 for cooling water are respectively disposed to both side plates 12a of the trough 12, cooling water can be continuously injected onto clonker (a) in the trough 12 to cool it, cooling water (b) in the trough 12 can be supplemented, and the depth of the cooling water (b) in the trough 12 is reduced to a minimum valve.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ash discharge fP that is disposed directly under the bottom of a coal-fired boiler or the like and discharges clinker while cooling it.

To explain the conventional example of the inlet/output device for the bottom ash (clinker) of a coal-fired boiler, as shown in Figures 1 and 2, cooling water (h) is held directly below the bottom (1α) of the boiler (1). A conveyor flight (3) placed on the trough (2) allows the bottom (ILL) to be
The clinker (al) that has fallen from the furnace is cooled by cooling water (hl) and transferred to the right side (in the direction of the arrow) in the figure, and is discharged from the rising part (2α). The seal plate (4) is vertically installed, and the boiler (1) K is a continuous mechanical translation device of the Shasha type. The ash extraction device is designed to make the depth of the cooling water (1') in the trough (2) as shallow as possible so that the chestnut 7 (a) gradually absorbs water and cools it. has been done.

However, in the case of a large-capacity boiler, in the conventional input/output device, the furnace width and the distance of the shallow part become long, and the third
As shown in the figure, when a giant clinker (σ) falls, the upper part of the clinker (σ) becomes difficult to be cooled by the cooling water (A) and is excessively slowly cooled. clinker becomes a strongly cohesive lump, making it difficult to crush into a size suitable for transportation and causing problems with 1. In addition, clinker that continuously falls Giant tarin crabs (sometimes stones) are connected to each other.

The present invention was developed in view of the above-mentioned circumstances, and includes a trough that holds cooling water located directly under the bottom of the reactor.
Amakawa 4Jj 171, which cools and discharges clinker by running a conveyor flight arranged on the trough, is characterized by the fact that a cooling water injection machine +1 is provided on the side of the trough. In this case, the clinker is slowly cooled by the cooling water in the trough, and the cooling water is injected to cool the entire part, thereby improving the cooling performance and eliminating the above-mentioned drawbacks. The purpose of the present invention is to provide a sales device that provides the following advantages.

The present invention has the above configuration as follows: [In a ceiling equipment in which a trough holding cooling water is disposed directly below the bottom of the furnace, and a conveyor flat disposed on the trough runs to cool and discharge the clinker, the trough Since a cooling water injection mechanism is provided on the side of the trough, the depth of the cooling water in the trough can be made shallow to prevent rapid cooling of the clinker and prevent one shot from occurring.

Even if the clinker falls into the cooling water in the trough and the cooling water is sprayed onto the clinker in the cooling water, the cooling effect is uniform throughout the entire body, The cooling rate is moderate, and the jetting makes the clinker more likely to crack and become brittle, and the clinkers are prevented from bonding to each other, significantly improving the cooling performance of the clinker, and preventing the clinker from condensing, making it more likely to be crushed.
B:c, ash 1!4 performance is significantly improved.An embodiment of the present invention will be described below with reference to the drawings.

Figures 4 and 5 show an embodiment of the present invention. In Figure 1, (1) is a coal-fired boiler (1σ) is the bottom of the hearth, and (2) is the bottom of the hearth (]σ). A trough (3) is disposed on the trough 112 and holds cooling water (h), and (3) is a converter flight that is disposed on the trough 112 and is operated by a drive mechanism (not shown). It has the same configuration as the device shown in Figure 1, and is a shallow mechanical continuous entry/exit device.

In addition, in the example of the present invention (C) (↑−βi+ %p
+・Rough f12 K O is le fIIl plate (12σ) (1
2q) along the J-shaped flange (12A) at the end of the two wires. Seal water (C
) (4q) (4h)
is hung vertically, and the lower end of the seal plate (41I) is immersed in the seal water (c) to connect the hearth bottom (1α) and the trough (
In addition to having a water-sealed structure between 12 and 12,
A cooling water injection nozzle is arranged on the trough (120 side plates (12σ) (12α), and the injection nozzle aS is
Appropriate distance 1 in the length direction of the both side plates (12σ) (12α)
A common cooling water supply pipe (11
is attached to the trough (I'!
By replenishing the cooling water (h) in the trough (I2), the depth of the cooling water (h) in the trough (I2) is made shallow to the minimum by installing the injection nozzle (151).
It has become +9.

In addition, ['vl (211) I is a movable furrow provided at the bottom of the main access device, and can be placed directly under the hearth bottom (1α) by adjusting the installation to an appropriate position, as shown in Figure 1. An embodiment of the present invention has a configuration as described above.
Therefore, by moving the con-near flight (3) on the trough (12) in the direction of the arrow shown in FIG. The clinker (α) that has fallen from ]a) is transported and discharged while being cooled by the cooling water (h) in the trough [1'IJ.

In addition, in this example, as described above, the depth of the cooling water (h) in the trough (1"2i is formed to be extremely shallow and becomes a cage), so that the clinker (α) is not rapidly cooled and its explosion occurs. However, for a relatively large linker (α), the trough (2
) Water is absorbed and cooled only in the lower part by the cooling water (b) in ), and the upper part has almost no cooling effect from the cooling water (b), resulting in excessive slow cooling and extremely (yJ, < V,c
vinegar.

In addition, the following clinker will combine and become a C giant, but the injection nozzle (1
Cooling water is injected from 19, and clinker (
The cooling rate in a) will result in excessive quenching and 7. (IJ Li'
The cooling water (h) in the trough (121) is
The clinker (α) is cooled at a cooling rate of 100%, preventing explosions and sufficiently inhibiting condensation, and the injected cooling water is added to the cooling water (b) in the trough (12)
, - Shallow water depth σ) Cold it'll water (h) Fang - Does not compensate,
An appropriate amount of cooling water (h) is ensured.

7': Ct,; % Figure 3 ((relative IC as shown)
To explain the case of a giant clinker (σ), the injection nozzle ((5
), cooling water is injected from the giant clinker (σ).
is cooled at a moderate cooling rate over the entire surface.1
One burst of clinker occurs, and at the same time, the injection causes cracks, which become brittle and easily fractured, and the bonding of subsequent clinkers is also effectively IX [1 city]. Then, the clinker is transported by the conveyor transport (3) and the illumination is carried out. Therefore, the cooling performance of the clinker, rgF
1;) i stopped - transfer limit r exit, etc.; and whistled 4
Demonstrate J1 results 2. Excellent performance and reliability 1. <Improve yourself.

In addition, the leakage of the cooling water (splash L'〈minute ζ') due to n4 to 1゛ is 1:IIJ and 2KJl, and
- rough (1 (ll - seal water (C), t (T '':
(4J) Ka') i:c h Water seal tB\, the hearth bottom (1a) and trough t12
Seal 4 raw fih between i; L-< l? Although the present invention has been described and explained above with reference to embodiments, it goes without saying that the present invention is not limited to these embodiments only, and that various modifications may be made without departing from the spirit of the present invention. The design can be modified6.

[Brief explanation of drawings]

FIG. 1 is a vertical 1i7F side view showing an example of a conventional sales device. Figure 2 shows 11 no 11n1ρ1 of the ■-■ portion of Figure 1. Fig. 3 is a clear diagram showing the cooling state of the giant clinker. Fig. s8'r4 is a sectional view corresponding to the section 11-■ in Fig. 1 showing four examples of the present invention, and Fig. 5 is the V of Fig. KS4. An enlarged view of the part. 1: Boiler 1σ: Furnace 1 3: Conveyor flight J
2 Nidrough 15: Injection nozzle (injector groove) α: Clinker h = Cold water L.: Cold water Ij1
111j people Patent attorneys: Bunyu Okamoto 13 people

Claims (1)

[Claims] A trough holding cooling water is disposed directly below the furnace bottom, and a conia flight disposed on the trough runs to cool and discharge clinker. An input/output device characterized in that a cooling water injection mechanism is provided in the input/output device.