JPH0324580Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a coke dry extinguishing method that is installed in the passage of high-temperature gas entering a boiler from a cooling tower containing red-hot coke to remove dust from the high-temperature gas. This relates to equipment dust removers.

"Prior Art" Coke dry extinguishing equipment is equipment that recovers the sensible heat of red-hot coke discharged from a coke oven. Fig. 9 schematically shows a general coke dry extinguishing equipment, in which inert cooling gas is circulated between the cooling tower 1 and the boiler (heat exchanger) 2 in the direction of the arrow. It is designed to cool the red-hot coke inside. In other words, when red-hot coke is charged into the cooling tower 1, the cooling gas absorbs the sensible heat of the red-hot coke and becomes high-temperature gas.This high-temperature gas is introduced into the boiler 2 through the passage 3, where the heat is recovered. After that, it is pumped into the cooling tower 1 again through the passage 4.

Conventionally, a dust remover 5 as shown in FIG. 9, for example, is provided in the passage 3 of such coke dry extinguishing equipment in order to remove dust (coke powder) from the high-temperature gas. This dust remover 5 is a so-called grid-type dust remover, and a hopper 6 is provided on the floor surface of the horizontal part of the passage 3, and a dust removal grid 7 made of brick is provided above the hopper 6 and extends vertically. As shown in FIG. 10, the grid 7 has a collection groove 8 extending along its extending direction and opening toward the flow of high-temperature gas.
It is said that the configuration includes the following. The coke powder in the high temperature gas is collected in the collection groove 8 and then lowered along the collection groove 8 and discharged from the hopper 6 to the outside of the passage. Incidentally, the reference numeral 9 in the figure is a circulating blower, and the reference numeral 10 is a rectifying grid.

"Problems to be Solved by the Invention" By the way, in the conventional dust remover 5 mentioned above, by using bricks for the dust removal grid 7, heat resistance and wear resistance against high temperature gas and coke powder therein are taken. , such a dust removal grid 7 is
Due to processing problems, the depth d of the collection groove 8 is changed to its width w.
It has the disadvantage that it cannot be made very large. In other words, if the depth d is set sufficiently large, or if the number of collecting grooves 8 is increased, cracks will easily enter the dust removal grid 7. Therefore, the trapping groove 8 cannot be formed into a deep shape, and the coke powder once collected in the trapping groove 8 is scattered again by the turbulent flow of high-temperature gas in the trapping groove 8 and is thrown into the boiler 2. It may flow into the boiler tube and accelerate wear of the boiler tube. Therefore, when using such a dust remover, it is necessary to take measures such as slowing down the flow rate of high-temperature gas and covering the boiler tube with a protector to increase the dust removal efficiency. This has led to an increase in the size of the dust remover itself and a rise in equipment costs.

The present invention was developed in view of the above circumstances, and its purpose is to improve the dust removal efficiency of the dust removal grid, extend the life of the boiler tube, and downsize the boiler and dust remover. ,
Another object of the present invention is to provide a dust remover that eliminates the entire fire extinguishing equipment.

"Means for Solving the Problem" In order to achieve this objective, the dust remover of the present invention is provided with a metal partition plate in the collection groove that is substantially orthogonal to the width direction of the collection groove. , this collection groove is divided into a plurality of narrow grooves.

"Operation" According to the present invention, it is possible to set the depth of each narrow groove to be sufficiently larger than its width. Therefore,
Turbulent flow is difficult to occur in each narrow groove, and the collection groove portion reliably takes coke breeze into each narrow groove and causes it to descend within the collection groove portion.

``Example'' An example of the present invention will be described below with reference to FIGS. 1 to 6. In addition, in the following explanation, the same reference numerals are given to the parts common to the conventional dust remover to simplify the explanation.

FIG. 1 shows the schematic structure of the dust remover of this embodiment. In this embodiment, a high-temperature gas passage 3 is provided approximately horizontally between the cooling tower 1 and the boiler 2, and a hopper 6 is provided on the floor within this passage 3. A brick dust removal grid 11 extending vertically is fixed on the hopper 6, and a brick rectification grid 10 is also fixed on the upstream side of the dust removal grid 11.

The dust removal grids 11 are arranged in two rows in the direction of flow of high-temperature gas as shown in FIG. It is placed in a facing position. The dust removal grate 11 has a wide collection groove portion 12 extending along its extending direction and opening toward the flow.
A long comb-tooth metal fitting 13 formed by combining metal plates in a comb-teeth shape is fitted over the entire length of the collection groove 12.

As shown in FIGS. 3 and 4, this comb-tooth metal fitting 13 has a plurality of grooves that divide the collection groove 12 into a plurality of deep narrow grooves 14 that are substantially orthogonal to the width direction of the collection groove 12. The partition plates 15 and these partition plates 15
a base plate 16 that connects the inner edges of the grooves to each other;
It is comprised of a spacer plate 18 that maintains a space (hereinafter referred to as a coke passage) 17 between this base plate 16 and the bottom of the collecting groove portion 12. . and,
The base plate 16 is provided with a large number of communication holes 19 that communicate the narrow grooves with the coke passage 17, and
At the lower end of the hopper 6, a fifth
As shown in the figure, the coke discharge port 2 is larger than the communication hole 19.
0. Note that this comb-tooth metal fitting 13 is connected to a presser rod 21 welded to the partition plate 15 as shown in FIG.
It is fixed to the dust removal grid 11 by fastening it to the dust removal grid 11 with steel bangs 22.

When using a dust remover configured in this way,
The high-temperature gas discharged from the cooling tower 1 passes through the rectifying grids 10 as indicated by the arrows in FIG. 2, and then hits the dust removal grid 11. At this time, the collection groove portion 12 takes in the coke powder in the high-temperature gas into each of the narrow grooves 14 . Since the depth D of the narrow groove is set to be sufficiently larger than the width W, turbulent flow of high-temperature gas is unlikely to occur inside the narrow groove. Therefore, the captured coke breeze does not scatter again and falls along the base plate 16. A part of the descending coke breeze passes through the communication hole 19, enters the coke passage 17 as shown by the arrow in FIG. 3, and descends within the coke passage 17. The coke powder in the coke passage 17 is discharged from the coke discharge port 20 as shown by the arrow in FIG. is discharged from the lower part of the passage 3.

On the other hand, FIGS. 7 and 8 show other embodiments of the present invention. Root plate 2 in this embodiment
3 is equipped with a guide plate part 25 that projects obliquely upward into the narrow groove 14 from the lower edge of the communication hole 24, and the guide plate part 25 receives the coke powder that descends along the base plate 23. , the coke is actively guided into the coke passage 17 as shown by the arrow in FIG. In other words, coke powder is in coke passage 1.
7, re-scattering of coke breeze is reliably prevented.

In addition, in the above embodiment, a plurality of partition plates 15 are used, but it is also possible to use only one partition plate. Further, if the width of the deep part of the collecting groove part 12 is narrower than the width near the opening so that the base plate 16 does not enter the deep part of the groove, it is not necessary to provide the spacer plate 18.

"Effects of the Invention" As explained above, according to the present invention, the following excellent effects can be obtained.

Since a metal partition plate is provided in the collection groove of the dust removal grate to divide the collection groove into a plurality of narrow grooves, the depth of each narrow groove must be set sufficiently large relative to its width. becomes possible. Therefore, turbulence is less likely to occur in each narrow groove, and coke breeze can be reliably taken into the narrow grooves. That is, it is possible to improve dust removal efficiency and extend the life of the boiler tube.

The above effects increase the flow rate of high-temperature gas, simplify the boiler tube protector,
Alternatively, the material of the boiler tube can be made of a material with low wear resistance. That is, the boiler and the dust remover themselves can be downsized, and equipment costs can be reduced.

Since the dust removal grid made of brick mechanically reinforces the metal partition plate, it is possible to overcome the weaknesses against heat and abrasion that would otherwise occur if the dust removal grid was made only of metal, for example.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of the present invention, Figure 1 is a partially sectional side view illustrating the schematic structure of the main part, and Figure 2 is viewed from the - line arrow in Figure 1. Fig. 3 is an enlarged cross-sectional view of the dust removal grate, Fig. 4 is a view taken along the - line in Fig. 3, Fig. 5 is an enlarged sectional view of the lower end of the dust removal grate, and Fig. 6 is - of Fig. 5. Linear views, FIGS. 7 and 8 show other embodiments of the present invention,
Figure 7 is a front view of the communication hole, and Figure 8 is the − of Figure 7.
9 is a schematic view of a general coke dry fire extinguishing equipment, and FIG. 10 is a view taken along the -X line in FIG. 9 to explain a conventional dust remover. 1... Cooling tower, 2... Boiler, 3... Passage, 6
... hopper, 11 ... dust removal grate, 12 ... collection groove section, 13 ... comb-tooth metal fittings, 14 ... thin groove, 15 ...
Partition plate, 16, 23... Root plate, 17... Coke passage, 19, 24... Communication hole, 20... Coke discharge port, 21... Presser bar, 22... Steel band, 25... Guide plate Part, D...Depth, W...
width.

Claims (1)

[Scope of utility model registration request] A vertically extending brick dust removal grate is installed in the horizontal part of the passage of high temperature gas entering the boiler from the cooling tower containing red-hot coke, and a dust removal grate made of brick is installed along the direction of extension of the dust removal grate and is connected to the flow of high temperature gas. In a dust remover for coke dry extinguishing equipment that collects dust in high-temperature gas with a collection groove that opens toward the opposite direction, a metal partition plate that is substantially orthogonal to the width direction of the collection groove is used to collect dust in the high-temperature gas. A dust remover for coke dry extinguishing equipment, characterized in that it is provided in a groove and the collection groove is divided into a plurality of narrow grooves.