JPH0556940U - Horizontal chamber furnace coke oven furnace lid sealing device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the sealing performance by increasing the gas temperature in the gas space near the furnace lid to prevent tar from sticking to the furnace lid and the furnace body seal. A ceramic heater 8 is provided over the entire length in the vertical direction of a door jam 7 on the furnace body side facing a gas space 4 of a furnace body formed of a lid body 1 and a refractory. The ceramic heater 8 is energized to heat the coke oven gas flowing in the gas space 4 to prevent tar deposition in the gas. Sealing defects on the furnace lid due to tar deposition / deposition are eliminated.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a furnace lid sealing device for a horizontal chamber furnace type coke oven.

[0002]

[Prior Art]

 Generally, a furnace lid of a horizontal chamber type coke oven holds coal 11 (or coke) in a carbonization chamber 3 by a refractory 2 attached to a furnace lid body 1 as shown in FIG. Gaseous products (coke oven gas) generated from coal 11 in the carbonization chamber 3 during the coking process (carbonization process) in the carbonization chamber 3 are generated between coal particles or between coal 11 and refractory 2. Alternatively, the gas space 4 formed between the refractory 2 and the carbonization chamber 3 is raised, passes through the space formed in the upper part of the coal bed in the carbonization chamber 3, and passes through the rising pipe at the furnace top to It is discharged to the outside. 9 shows a seal plate.

Since the coke oven gas passing through the gas space 4 comes into contact with the outside air and comes into contact with the door jam 7 having a low temperature, the temperature thereof is lowered, and the surface of the door jam 7 contains the coke oven gas of the coke oven gas. Precipitate the tar component. When the deposited tar accumulates and solidifies, it becomes difficult to attach and detach the furnace lid composed of the lid main body 1 and the refractory material 2 and the operation does not start, and the sealing strip 6 and the door jam 7 of the sealing portion There are problems such as poor adhesion, gaps, and gas leakage, which is inconvenient for hygiene and the environment.

Generally, as a method of sealing a furnace lid of a coke oven, Japanese Patent Laid-Open No. 56-70087 discloses that by widening the gas space 4, the pressure in the gas space 4 is lowered and the gas flow is increased. A method has been proposed in which the temperature of the door jam 7 is raised to prevent the precipitation of tar components. Further, in Japanese Patent Laid-Open No. 63-112686, air or oxygen is blown into the gas space 4 to burn a part of the generated coke gas to raise the temperature of the gas space 4 and to deposit the tar component. The method of preventing is proposed.

[0005]

[Problems to be solved by the device]

 Among the above-mentioned conventional techniques, in the technique proposed in Japanese Patent Laid-Open No. 56-70087, a large amount of coal flows into the gas space 4, and the coal blocks the gas space 4 and obstructs the flow of the gas to cause a door jam 7 There is a problem that the temperature cannot be raised. Further, in the technology disclosed in Japanese Patent Laid-Open No. 63-112686, there is a problem in that the temperature of the coke oven gas is excessively high in the gas space 4 and the temperature becomes too high, brick spalling occurs, and there is a risk of explosion. is there. The present invention solves the above-mentioned problems and can reliably prevent the tar component in the coke oven gas from adhering to the seal portion near the door jam 7 by using a furnace lid sealing device for a horizontal chamber type coke oven. It is intended to be provided.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention relates to a furnace lid sealing device for a horizontal chamber type coke oven, in which a ceramic heater or the like is provided over the entire vertical length of the door jam on the furnace body side facing the gas space near the furnace lid. A heating element is provided, and the heating element is used to heat the sealing portion of the furnace lid to prevent tar from depositing on the sealing portion. It is a device.

[0007]

[Work]

 According to the present invention, a heating element (for example, a ceramic heater) is provided near the gas space of the door jam of the coke oven to energize the door jam to heat the door jam, thereby increasing the temperature of the gas in the gas space and increasing the temperature of the door seal. Since tar is prevented from precipitating, the sealability of the seal part can be secured.

[0008]

【Example】

 FIG. 1 is a horizontal sectional view of a kiln opening portion of a coke oven showing an embodiment of the present invention. In FIG. 1, 1 is a furnace lid body, 2 is a refractory material, 3 is a carbonization chamber, 4 is a gas space, 6 is a sealing strip, 7 is a door jam, and 9 is a seal plate, which are shown in FIG. Is the same. According to the present invention, as shown in FIG. 1, for example, a ceramic heater is installed as a heating element 8 in the door jam 7 near the gas space 4 over the entire length in the height direction of the carbonization chamber 3 so that the gas in the gas space 4 can be prevented. The temperature is raised to 400 ° C or higher, and by keeping the gas space 4 at such a high temperature, tar is prevented from precipitating on the door seal part near the door jam 7, and thus the sealing property of the seal part is improved. Get better

Table 1 shows the results of an investigation of the state of tar adhering to the gas space 4. From the results shown in Table 1, it was found that maintaining the temperature of the gas space 4 at 400 ° C. or higher is effective for the precipitation of tar.

[0010]

[Table 1]

The gas temperature in the gas space 4 is measured by the temperature sensor 10 embedded in the door jam 7. For example, when the measured value is 400 ° C. or lower, the temperature rise is continued, and when it is 450 ° C. or higher. It becomes economical to stop the heating. Further, in the embodiment of the present invention, the ceramic heater is used as the heating element, but the heating element is not limited thereto.

[0012]

[Effect of the device]

 In the present invention, in order to improve the sealability of the furnace lid of the coke oven, a heating element is provided near the gas space of the door jam to raise the gas temperature in the gas space. Precipitation is prevented and the sealing property of the seal part is maintained well. Therefore, it is possible to obtain the effects of stopping the operation due to poor detachment of the door, improving the environment by preventing gas leakage, and reducing the furnace lid cleaning work.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view showing a coke oven kiln port of the present invention.

FIG. 2 is a horizontal sectional view showing a conventional coke oven kiln port.

[Explanation of symbols]

 1 Lid body 2 Refractory 3 Carbonization chamber 4 Gas space 6 Seal strip 7 Door jam (door frame) 8 Heating element (ceramic heater) 9 Seal plate 10 Temperature sensor 11 Coal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Akio Yokokawa 1 Kawasaki-machi, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Works

Claims (1)

[Scope of utility model registration request] 1. In a furnace lid sealing device for a horizontal chamber furnace type coke oven, a heating element is provided over the entire length in the up-down direction of a door jam on the furnace body side facing a gas space near the furnace lid. A furnace lid sealing device for a horizontal chamber furnace type coke oven, which is configured to prevent tar from depositing on the seal portion by heating the seal portion.