JPH07216360A - Method for preventing decomposition of carbon on wall in space of coke oven - Google Patents

Abstract

PURPOSE:To provide a method for preventing coal, which has been charged into a coke oven, from being deposited onto the wall in a space in the oven and melted to form deposit carbon. CONSTITUTION:Upon charge of coal into a coke oven chamber 1, a leveler rod 7 of an extruder 6 provided with a plurality of jet nozzles is inserted into the coke oven chamber 1, and compressed air is blown through the plurality of jet nozzles against the wall 5 in the space of the oven to blow off fine coal deposited on the oven wall. This method substantially eliminates the deposition of carbon, thus eliminating the need to conduct combustion of deposit carbon by air. Therefore, it is possible to prevent bricks of the wall from being deteriorated by the deposit carbon combustion with air. Further, clogging of the oven by deposit carbon can also be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing carbon from adhering to a coke oven space furnace wall to prevent the coal charged in the coke oven from adhering to the space furnace wall and melting to form adhered carbon. Is.

[0002]

2. Description of the Related Art During the carbonization process of a chamber furnace type coke oven, carbon is produced and adhered to the space furnace wall portion (including the coal charging wall) of the carbonization chamber. When the adhered carbon grows, it hinders the kiln removal work and the coal charging work, and when the adhered carbon increases, the coke kiln cannot be removed. For this reason,
People may remove the attached carbon with a crowbar,
A method has been adopted in which air is blown off the attached carbon to burn it off. Also, a method of connecting a carbon burning device to the coal car and inserting a lance from the coal charging port before charging the coal after the kiln removal is completed and blowing air to the carbon adhering to the furnace wall to burn it. was there.

[0003]

However, in all the conventional methods, the carbon after adhering is removed, and since the adhering carbon has a considerable strength, a person uses a burl. With the method described above, only a part of the adhered carbon could be removed. In addition, since the method of burning by blowing with air must be performed during operation, sufficient burning time cannot be taken, and the furnace wall bricks at the burning location locally become hot, and the furnace wall deteriorates. There was a problem. Further, in the above method, since the adhered carbon cannot be completely removed, the adhered carbon grows and becomes large in a severe case, and there is a problem that the coke cannot be kiln-fired.

[0004]

[Means for Solving the Problems] The above-mentioned problem is that an extruder leveler rod having a plurality of injection nozzles is inserted into the carbonization chamber immediately after charging the coal into the carbonization chamber, and pressurized air is supplied from the plurality of injection nozzles. It is solved by the method of spraying the space furnace wall.

[0005]

[Function] The carbon adhering to the space furnace wall of the carbonization chamber is such that, after coal charging, pulverized coal adheres to the space furnace wall, which is melted and carbonized, and the gas generated from the coal is thermally decomposed. However, there are two types of carbonization, but the latter is small, and it is considered that the former is due to the adhesion of pulverized coal and occupies most of the adhered carbon.

Since the pulverized coal attached to the furnace wall does not melt immediately, immediately after charging the coal, the leveler rod of an extruder equipped with a plurality of injection nozzles is inserted into the carbonization chamber to smooth the charged coal. At this time, if the pressurized air is blown from the plurality of injection nozzles to the space furnace wall portion (including the charging wall), the pulverized coal attached to the furnace wall portion is blown off. As a result, the adhesion of carbon due to the adhesion of pulverized coal is prevented.

[0007]

EXAMPLES Examples of the present invention will be described below. As shown in FIG. 4, immediately after the coal 2 is loaded into the carbonization chamber 1, the leveler rod 7 is inserted into the carbonization chamber through the leveler port 3, and the leveler rod 7 is reciprocated several times to be loaded into the coal. The work of smoothing the unevenness of the upper surface of the is performed. According to the present invention, during this leveling operation, pressurized air is blown to the space furnace wall portion 5 to blow off the pulverized coal adhering to the space furnace wall portion 5.

FIG. 1 is an illustration of an apparatus for carrying out the present invention. In the figure, the leveler rod 7 of the extruder 6
An injection pipe 8 is provided at the end of the injection pipe 8, and a flexible hose (rubber hose or the like) 9 wound around a reel 10 on the extruder is connected to the rear end of the injection pipe 8.

In the injection pipe 8, as shown in FIG. 2, when the tip of the leveler rod 7 reaches the deepest part of the carbonization chamber 1, the injection nozzle 20 is at the center of the charging port 13 or the charging port 13 adjacent thereto. It is provided at a position located in the middle between and.
In the illustrated example, the injection nozzles 20 are provided at four positions at the charging port 13 and at four positions in the middle of the adjacent charging ports, for a total of eight positions. As shown in FIG. 3, three injection nozzles 20 are provided at each position, one is installed right above, and two are installed left and right in the direction of 45 degrees. The injection pipe 8 is attached to the leveler rod 7 so that the injection nozzle 20 is not damaged when the leveler rod 7 is inserted into or removed from the leveler port 3.
It is disposed in the recess of the.

A compressor 12 is provided on the extruder 6,
A pipe (or a flexible hose) 11 for supplying the compressed air of the compressor 12 to the reel 10 is provided. Therefore, the compressed air in the compressor 12 is
It is supplied to the reel 10 through 1 and is supplied to the injection pipe 8 through the flexible hose 9. The flexible hose 9 wound around the reel 10 can supply pressurized air to the injection pipe 8 that is inserted into the carbonization chamber 1 together with the leveler rod 7. The flexible hose 9 of the reel 10 is rewound or wound according to the reciprocal movement distance of the leveler rod 7.

The present invention is implemented as follows using the above apparatus. After the charging of coal into the carbonization chamber 1 is completed, the leveler rod 7 is inserted into the carbonization chamber 1 through the leveler port 3, and the coal leveling operation is performed. During this leveling operation, the compressor 12 operates and the compressed air is supplied to the pipe 1.
1, injection pipe 8 through reel 10 and flexible hose 9
Is supplied to. The pressure air supplied to the injection pipe 8 is blown from the injection nozzle 20 to the space furnace wall portion 5 including the charging wall, and blows off the adhered pulverized coal.

[0012]

EFFECTS OF THE INVENTION According to the present invention, since the pulverized coal adhering to the space furnace wall portion causing the carbon adhering is blown off, the carbon adhering is almost eliminated, and the work of burning the adhering carbon is eliminated. Therefore, it is possible to prevent the deterioration of the furnace wall brick due to the burning work. Moreover, the clogging of the kiln due to the attached carbon is eliminated.

[Brief description of drawings]

FIG. 1 is an illustration of a device for carrying out the present invention.

FIG. 2 is an explanatory view of a mounting arrangement of an injection nozzle on an injection pipe.

FIG. 3 is a partial perspective view of an injection pipe and an injection nozzle attached to a recess of a leveler rod.

FIG. 4 is an explanatory diagram of a leveling operation using a leveler rod.

[Explanation of symbols]

 1 Carbonization Chamber 2 Coal 5 Space Furnace Wall 6 Extruder 7 Leveler Rod 8 Injection Pipe 9 Flexible Hose 10 Reel 11 Piping 12 Compressor 20 Injection Nozzle

Claims (1)

[Claims] 1. Immediately after charging coal into the carbonization chamber, an extruder leveler rod provided with a plurality of injection nozzles is inserted into the carbonization chamber,
A method for preventing carbon from adhering to a wall of a coke oven space, wherein compressed air is blown from the plurality of injection nozzles to the wall of the space oven.