JP2894065B2 - Coke oven lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coke oven lid,
In particular, the present invention relates to a furnace lid in which a gas passage is formed inside a furnace lid body of a coke oven.

[0002]

2. Description of the Related Art In order to prevent gas generated in the early stage of carbonization from leaking from a furnace lid, a furnace lid having a gas passage inside a furnace lid body of a coke oven is used. When such a furnace lid is used, the gas generated in the early stage of carbonization is
The gas is guided to the upper part of the carbonization chamber through the gas passage and collected by the air collecting main pipe through the riser pipe, so that the gas does not leak from the gap of the furnace lid. As a furnace cover of a coke oven of a type in which a gas passage is formed inside the furnace cover body, there is one disclosed in Japanese Utility Model Laid-Open No. 4-4042.

As shown in FIGS. 2 (a) and 2 (b), the furnace lid has a plurality of shielding plates 23 each having a side plate portion 24 extending in a perpendicular direction at an upper portion thereof and stacked in the height direction of the furnace lid. Thus, a gas passage 22 is formed inside the furnace lid body 21. An end of the side plate portion 24 extending from the shield plate 23 is fixed to the furnace lid body 21. The shield plates 23 are stacked on the lower shield plate 23. And is loosely screwed with bolts 25. Such a structure is used to prevent a shielding plate or the like constituting a gas passage from being deformed by a high-temperature atmosphere in a carbonization chamber generated due to coal dry distillation.

[0004]

However, the technique disclosed in Japanese Utility Model Laid-Open Publication No. 4-4042 has the following problems. That is, if an excessive draft acts on the coke oven, air is sucked through the gap between the furnace lids, so that a large temperature difference (200 to 300 ° C.) occurs between the outer surface of the shield plate in contact with coal and the inner surface of the shield plate in contact with the sucked air. However, there is a problem that the shielding plate is deformed. As a result, the charged coal turns around and the gas passage is closed, so that the generated gas is not guided to the upper part of the carbonization chamber and leaks from the gap of the furnace lid.

The present invention has been made to solve the above-mentioned problems of the prior art, and a member for forming a gas passage even when air is sucked from a gap in a furnace lid due to an excessive draft. An object of the present invention is to provide a furnace cover of a coke oven which does not deform and does not cause gas leakage.

[0006]

According to the present invention, an opening is formed on a side.
The metal gas passage component on the surface is
A plurality of cords connected in the vertical direction on the
In furnace lid of box furnace, protects the inner surface of the portion in contact with the instrumentation Nyusumi gas passage forming member from contact with large gas temperature difference
A furnace cover of a coke oven characterized by being coated with a heat insulating material.

[0007]

In the furnace lid of the coke oven according to the present invention, since the inner surface of the outer wall of the gas passage in contact with the charged coal is covered with a heat insulating material, air is sucked from the gap of the furnace lid for an excessive draft. However, since the low-temperature air does not directly contact the inner surface of the outer wall on the side in contact with the charged coal in the gas passage, a large temperature difference does not occur between the inside and the outside of the outer wall. Therefore, the members constituting the gas passage of the furnace lid are not thermally deformed.

[0008]

FIG. 1 shows a furnace cover of a coke oven according to one embodiment of the present invention.
It will be described based on. FIG. 1A is a cross-sectional view of a furnace cover of a coke oven according to one embodiment of the present invention, and FIG. 1B is a perspective view of a furnace cover of a coke oven. The furnace lid of the coke oven according to one embodiment of the present invention includes a metal gas passage constituting member 3 on the side of a carbonization chamber of a refractory 2 connected to a U-shaped metal frame 1 via a stud or the like. A plurality of the gas passages 4 are connected in the direction to form a gas passage 4. The heat insulating material 5 is fixed to the inside of the wall of the gas passage component 3 on the side in contact with the charged coal.

Further, a furnace lid of a coke oven according to one embodiment of the present invention will be described in detail. A seal plate is provided on both sides of a U-shaped metal frame 1 so as to be pressed against a carbonization chamber 7 by a spring 6. 8 are provided. Further, openings 9 are formed on both side surfaces of the gas passage constituting member 3, and gas generated from the openings 9 flows into the gas passage 4.

[0010] The furnace lid of a coke oven according to one embodiment of the present invention is:
With the above-described configuration, even if air is sucked through a gap in the furnace lid due to an excessive draft, since the heat insulating material 5 exists, the low-temperature air described above (in the section of action) or
The gas heated to a high temperature due to ignition by air or the like is directly applied to the inner surface of the outer wall of the gas passage 4 on the side in contact with the charged coal, that is, the gas passage structure.
Since there is no contact with the inner surface of the component 3 in contact with the charged coal , a large temperature difference does not occur between the inside and outside of the outer wall (the gas passage constituting member 3) . Therefore, the member constituting the gas passage of the furnace lid is thermally deformed, and the charged coal blocks the gas passage, so that gas does not leak from the furnace lid.

[0011]

According to the present invention, the gas passage of the furnace lid is formed.
The contact member is prevented from contacting the gas with a large temperature difference,
Since no deformation occurs , gas leakage from the furnace lid can be prevented.

[Brief description of the drawings]

FIG. 1 (a) is a cross-sectional view of a furnace cover of a coke oven according to one embodiment of the present invention, and FIG. 1 (b) is a perspective view of a furnace cover of a coke oven.

FIG. 2 is a view showing a furnace lid of a conventional coke oven;
(A) is a side view, (b) is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 U-shaped metal frame 2 Refractory 3 Gas passage constituent member 4 Gas passage 5 Insulation material 6 Spring 7 Carbonization chamber 8 Seal plate 9 Opening

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahito Kihara 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Inventor Takumi Naganaga 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan (72) Inventor Kunihiro Tanimoto 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Inventor Atsushi Kawaguchi 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. Examination Ichiyoshi Karaki (56) References JP-A-62-59692 (JP, A) JP-A-1-165691 (JP, A) JP-A 62-122852 (JP, U) JP-A 4-4042 (JP) , U) (58) Field surveyed (Int.Cl. ⁶ , DB name) C10B 25/06 C10B 25/02

Claims (1)

(57) [Claims] 1. A metal gas passage having an opening on a side surface.
Multiple components connected vertically to the coke oven side of the coke oven
Gas in the furnace lid of the coke oven
Large temperature difference inside surface of the portion in contact with the instrumentation Nyusumi the passage forming member
A furnace cover for a coke oven characterized by being coated with a heat insulating material to protect it from contact with a threshold gas .