JPH07268330A - Coke oven riser - Google Patents

Abstract

PURPOSE:To remove carbon deposited in a bent pipe of an ascension pipe of a coke oven by burning and discharging the carbon at a stroke by the heat retained in the coke oven. CONSTITUTION:This ascension pipe of a coke oven is composed of a rising pipe 3 and a vertical pipe 4. The rising pipe 3 is composed of a vertical pipe 3a vertically connected to the coke oven and a bent pipe 3b connected to the vertical pipe 3a. The vertical pipe 4 is. connected to the tip end of the bent pipe 3b at the side part, has a lid 5 and an opening 6 at the top and is connected at the lower part to a damper box 8 which is connected to a dry main.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riser pipe structure in a coke oven.

[0002]

While a coke oven produces coke,
Since a large amount of C gas or the like is generated, the C gas or the like is recovered.
As shown in FIG. 2, conventionally, as shown in FIG. 2, the C gas is recovered by providing a riser pipe 10 at one end of the carbonization chamber of the coke oven main body 1, and a bend pipe 11 connected to the riser pipe 10 and a damper box 7. Recovered by Maine 8. Carbon may adhere to and grow on the inner wall surfaces of the ascending pipe 10 and the bend pipe 11 during the operation of the coke oven, deteriorating the flow of gas and finally causing a gas leakage accident. Therefore, it is necessary to remove carbon attached to the inner wall surfaces of the rising pipe 10 and the vent pipe 11.

The method of removing the carbon adhering to the inner wall surfaces of the rising pipe 10 and the vent pipe 11 is to dry the coke, then to remove the coke, and then open the lid 12 above the rising pipe 10 to open the raw coal. By opening the lid 2a of the charging port 2 and introducing air into the coke oven from the outside, the retained carbon in the coke oven produces a high-temperature oxidizing combustion atmosphere to burn and remove the adhering carbon.

Further, in Japanese Patent Laid-Open No. 64-85286, an operator inserts a high pressure water jet nozzle from a vent plug into an ascending pipe and a vent pipe of a coke oven, and injects high pressure water onto carbon adhered thereto. Techniques for removing are disclosed.

[0005]

In the above-mentioned prior art, in the method of burning carbon by the heat retained by the coke oven, the carbon adhering to the inner wall surface of the rising pipe 10 is burned and removed, but the combustion heat rises. Since it is discharged right above the pipe 10, there is a problem that it does not reach the vent pipe 11 and the carbon adhering to the inner wall surface of the vent pipe 11 cannot be removed.

Further, in the technique disclosed in Japanese Patent Laid-Open No. 64-85286, when a worker removes carbon, it is immediately after the coke oven is put out of the kiln. Due to this, it becomes a high temperature work, resulting in heavy labor. An object of the present invention is to solve the above problems.

[0007]

Means for Solving the Problems The present invention is (1) a coke oven, a rising pipe having an upright pipe communicating with the inside of the furnace, and a bending pipe connected to an upper part of the upstanding pipe, (2) A vertical pipe having a side body connected to the end of the bent pipe and an openable lid at the upper opening, (3) one end of which is connected to the lower opening of the vertical pipe and the other end of which is a dry main. A coke oven riser having a damper box connected to the coke oven.

[0008]

The carbon passing through the rising pipe during carbonization of the coke adheres and grows on the inner walls of the rising pipe and the vertical pipe. If the raw material inlet of the coke oven and the lid provided at the upper opening of the vertical pipe are opened and air is taken into the coke oven from the outside, the carbonization gas remaining in the oven is burned and It goes through the upright pipe and the bent pipe toward the opening in the upper part of the vertical pipe. At this time, since the high temperature oxidizing gas passes through the inner wall to which carbon is attached, the carbon attached to the upright portion and the bent portion of the rising pipe can be burned at the same time. Since the outlet of the high temperature oxidizing gas is at the rear of the bent pipe, the dead space for carbon combustion is reduced as compared with the prior art.

[0009]

1 is a side view showing the structure of a coke oven rising pipe according to an embodiment of the present invention. In FIG. 1, 1 is a coke oven main body, 2 is a raw coal charging inlet, 2a is a lid, 3 is a rising pipe erected at one end of the coke oven main body 1, and an inner wall is lined with a refractory brick (not shown). The rising pipe 3 is composed of an upright portion 3a communicating with the inside of the coke oven main body 1 and an upper bent portion 3b. The tip of the bent portion 3b is integrally attached to the side portion of the vertical pipe 4 orthogonal to each other, the upper portion of the vertical pipe 4 is provided with an opening 6 having a lid 5, and the lower portion of the vertical pipe 4 is conventionally formed. It is connected to a damper box 7 similar to that of the technology, and the damper box 7 is connected to a C gas recovery dry main 8.

The shape of the bent portion 3b extending from the upright portion 3a to the vertical pipe 4 in the rising pipe 3 according to the present invention is not limited to the elbow shape shown in the drawing, and may be an inclined shape. In the present invention, when removing carbon adhering to the inner wall surfaces of the rising pipe 3 and the vertical pipe 4 having the bent portion 3b at the upper part, after removing the coke from the coke oven, the lid 5 above the vertical pipe 4 is removed. Open, then raw coal charging port 2 of coke oven body 1
When the lid 2a is removed and opened, and external air is taken into the coke oven, the heat retained in the coke oven creates a combustion atmosphere, and the exhaust gas passes through the upright portion 3a of the rising pipe 3 and the bent portion 3b at the upper portion. It is discharged from the upper opening 6 of the vertical pipe 4 to the outside. At that time, the attached carbon in the upright portion 3a and the bent portion 3b in the rising pipe 3 and in the vertical pipe 4 is burned and removed by the oxidizing gas at a high temperature due to the heat retained in the coke oven.

[0011]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the carbon adhering to the inside wall of the rising pipe and the inside wall of the bent pipe can be burned and removed at once by the heat retained in the coke oven. It is possible to solve the problem that it was difficult to remove the carbon adhering to the vent pipe part. Further, the present invention is structurally simple because the bent portion is provided on the extension of the upright portion of the rising pipe, and the equipment cost is low.

[Brief description of drawings]

FIG. 1 is a side view of a coke oven rising pipe according to an embodiment of the present invention.

FIG. 2 is a side view of a prior art coke oven riser tube.

[Explanation of symbols]

 1 Coke oven main body 2 Raw coal charging inlet 3 Rise pipe 3a Rise pipe upright pipe 3b Rise pipe bend pipe 4 Vertical pipe 5 Lid 6 Open 7 Damper box 8 Dry main

Claims (1)

[Claims] 1. A coke oven riser having the following components. (1) Coke oven An upright pipe having an upright pipe communicating with the inside of the furnace and a bent pipe connected to the upper part of the upright pipe (2) A side trunk is connected to the tip of the bent pipe and the upper part Vertical pipe with openable lid at the opening (3) Damper box with one end connected to the lower opening of the vertical pipe and the other end connected to the dry main