JPS6048480A - Industrial furnace - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a furnace with an improved burner arrangement. This invention is based on 1~ner kiln i q) -1
Although it can also be applied to industrial furnaces, the following explanation will be made using tunnel kilns as an example for convenience.

To explain the general 1 to 14 kilns (J shown in Figures 1 to 3), the furnace body 1 is equipped with one tropical zone Then, baked product 5
+Person 11 was sent to trolley 4 on J rail 3.I from M
z Tropical
/' in the order of Ai' -C continuously exits the furnace 1 and passes through -C towards [ ]N in the firing zone Y (31 burners 2 are arranged. Fired product 5 in the flame IJ firing zone Y
While heating, it flows as an open gas in the direction of the preheating zone X,
After preheating the fired product 5 in the preheating zone X, from the chimney○ 1) 1
Served.

The fired product 5 that has passed through the preheating zone As shown in Figure 4, in conventional tunnel kilns, the burner nozzle is
-2 They were placed at symmetrical positions on both sides of the firing zone Y at regular intervals. In other words, the burners 2 on both sides of the wall are placed in the same position facing toward the opposite direction.
The installation locations were aligned on both walls.

IIi of burner 2 like this! 5, the flame from the burner 2 flows in the direction of arrow C, as shown in FIG. ? The flames flow symmetrically around the medium flame line of the firing zone Y.
The flame from burner 2 is 10 meters from the front of burner 2!L/U-eye furnace 1 4I-
It flows from the preheating zone X to the preheating zone C.

This,J,is in a conventional tunnel kiln (,1,
The flames from the plurality of harps 2 flow in a fixed direction as shown in Figure 1), and the fired product 5 is heated along this flow.

As a result, the temperature of the flame from the burner 2 reaches its maximum temperature just before the burner 2, and decreases as the flow progresses.

For this reason, in the conventional one-thickness kiln, the in-furnace crystal distribution in the firing zone Y is such that the temperature in the front part of the burner 2, the ceiling part of the furnace, and the part F and bottom part of the fired product 5 is high. 1
u % - was 9 - easy.

As a result of (a), charring marks and scalds occur on the fired product 5.

As a countermeasure for this 1, 41 situation, in general, the fm type and material of the fired product L] loaded on the uneven trolley 4 are adjusted in the lower part where the temperature is higher and in the lower part where the temperature is lower. I'd like to change it. In the conventional 1 Hennel kiln (A-), it is exactly the same as 711 and 4!1! To uniformly bake similar types of baked products (, j, a easy (G).

Special 1J7I, i When firing Nicolella mix products, which have recently undergone remarkable development, it is strongly required that the hot air distribution in the furnace be uniform. In view of the actual situation, the drawback of the non-uniform temperature distribution of the conventional one-thickness kiln is not serious.

The purpose of this invention is to improve the arrangement of barbs in the firing zone and to make the distribution of temperature inside the furnace uniform.
We provide industrial furnaces such as tunnel kilns.

The gist of the present invention is an industrial furnace characterized by having a plurality of burners installed on both side walls of a firing zone and spaced slightly apart from each other downward.

This invention has a configuration like the one above, and it is possible to uniformly distribute the heat distribution in the firing zone of a C11 Hennel kiln, etc.
You can move in the direction of H.

1. Refer to Figures 6 and below (see below for a detailed explanation of an embodiment of the present invention). Similar to the conventional ) to run), there is a preheating zone X, a firing zone Y, and a cooling zone. Are you equipped with J1, jB 7 in order, preheating zone X and cold 7JI! i) Y LJ adopts the same lano as the conventional shinodo real r'f (because it can be done,
Here - (゛ is 1YIt huge T explanation is omitted. In addition, child?r
+ i zone × and cooling zone / (shown in the drawing /, 2
cj: limited to the form, r-, <, this statement is applicable to the form of the song fat.

Figure 0 IJ An embodiment of this invention.
5° firing showing a part of the firing zone of Run in detail; 1
: There are multiple burners 6 and 7 on both side walls of L7.
The example of burner arrangement shown in Figure 6 is shown in Figure 6.
A part of the harp 6 and a lower burner 7 are arranged in a staggered or staggered manner on the side wall of B. On the other side wall, these are staggered or zigzag.
The first burner 6 and the lower burner 7 are arranged 11
Both sides GT, upper burner 6 and lower burner 7 (, L
1'I and I are arranged on two levels downwards, respectively.
ll, ? .

There is. In the front and back direction, the lower bars (6) and the lower burner (7) on both side walls are arranged in a very bent position. , IM g 'JRepo, - Upper barb of horn length measurement V - (Lower burner 7 located at the bottom of the side wall facing each other 1) C-1 Many 1-1 A combination of a lower bar saw 6 and a lower burner 7 is installed on both side walls.
,7's 11・The lr/position of the direction is not the same 4i-J,
uni arrangement i′j

The flame from the lower barb 7 can pass in the direction of the arrow between the sea urchin and the trolley E3 and the fired product 9. The L nonga 11 is assembled to form the C space 10.

Assemble the brick 11 in -L of sea urchin hit 8 (C space 81110 is formed) 1. The flame 1 from the upper burner 7 passes under the fired product 9 as shown by the arrow 1 'C The flame from the first part burner 6 passes through the space 15 of the fired product 9, and flows upward along the opposite side wall surface, and then reaches the large moon part and flows toward the preheating zone. J: The sea urchins flow, descending and rising along the opposite side wall, and A゛)?-
(It begins to flow towards the pre-warming zone.

'd+ Figure 8 (1, front) Small J, This is an easy-to-understand illustration of the flow of the Umoto flame.
9:fl lThe flames from the upper part of the furnace, towards the lid part, and from the lower part of the furnace, 1-7 (lower part of the furnace, towards the lid part) (flowing in a spiral shape inside the furnace) Head to the preheating zone.Furthermore, P-direction burner-6 and 7
The fire '111 from burners 6 and 7 (1) +
After 1ir, the flow of flames from the adjacent barbs 6 and 7 is totally counter-moon 1j.

Due to the combination U of completely opposite flames, the flow of flame in the furnace of the firing zone does not strongly interfere with the flow of adjacent flames and mixes with each other, resulting in a uniform temperature distribution. form (
] It flows into the Tsutsuko tropics. Therefore, the distribution of smallpox in the oven in the firing zone is kept uniform not only below F but also on the left and right sides.

A tunnel kiln according to the present invention was prototyped and its effects were measured, and the results were as follows.

The kiln was constructed with a total length of 33 m, a width of 1.9 m, and a height of 2.3 m, with a firing zone of 1 mm (9 m in length) located in Figure 7 below the kiln. 12 upper parts ~-6 (6 on one side wall, 6 on the other) are installed in the firing zone. 6 burners on one side wall and 6 burners on the other side wall, for a total of 24 burners.
13 h O℃ (knee 1 - When Hiramix products were fired, 1 grade of each part in the furnace of the baking stick was heated to +j to 25°C continuously (for 1 hour/, r was running continuously). -I can do 4 things, =.

In the same article A'1, we conducted an experiment using the bar arrangement of the conventional one-thickness kiln shown in Fig. 14f to Fig. 3. 7) I [shita] 7. Because of this, continuous firing of Niko Cef Mix products was impossible.

(The second invention is not limited to the one-liner kiln of the above-mentioned embodiment, but can be applied to other types of tunnels.

This invention is shown in Figure 7.
t T'-(The fixed hearth 12 is fixed at a predetermined position (Q), and a space 14 is formed between the bricks 17. Space part 1 on the τ side
71 so that it can pass through. On the upper surface of the hearth 12, the bed plate 15 can be moved ('l iiQ L) C1 bed plate 1 F) ), firing belt 1G
is J on the base plate 15.゜This invention is also applicable to other types of 1-runs. Intermediate part 4!: Installation] Can be applied to a single furnace or a single furnace.

By applying the present invention to any one-run furnace, it is possible to maintain a uniform amount of abrasion in the furnace.

Furthermore, the present invention can be applied to clay furnaces other than firing furnaces to obtain similar effects.

Furthermore, the present invention can be applied to heat treatment or drying operations using a temporary furnace.

[Brief explanation of the drawing]

Figure 1 (longitudinal sectional view schematically showing 11 sections of an unconventional tunnel kiln; Figure 2 is along the Δ-△ line in Figure 1) a 0-cross sectional view;
Fig. 3 is a plan view taken along the line 13-B in Fig. 1, Fig. 4 is a schematic diagram showing the purple arrangement of the conventional 1 to 3 flask kiln, and Fig. 15. Figure 6 is an explanatory diagram showing the flow of the flame in the burner arrangement shown in Figure 4, and Figure 6 is an explanatory diagram showing the flow of the flame in the burner arrangement shown in Figure 4. A schematic diagram showing the arrangement, Figure 7 is the 6th
The diagram shows the burnout delivery! J Longitudinal sectional view, Figure 8 (,
Fig. 6 is an explanatory diagram showing the flow of the flame in the arrangement of two burners, and Fig. 9 is a schematic vertical cross-sectional view of another embodiment of the present invention. .7. . . . Burnout ε3... Hit 0... Burned product 10... Space 12... Furnace IA\ 13... Burner 1/ 1... Space" 5)... Base plate 16... Fired product

Claims (1)

[Claims] Using multiple burners installed on both sides of the firing zone, 1:
Difference in the downward direction 1! 1. 'Ji'i
'i Doriru I-Industrial Furnace.