JPS62161884A - Burning off system for carbon attached to carbonizing chamber in coke oven - Google Patents

Abstract

PURPOSE:To attempt to simplify coke oven equipment by making part of the carbonizing chamber open and inserting injection lance followed by injection of a gas to effectively remove, by combustion, the carbon attached to the whole wall surface of the chamber. CONSTITUTION:Lances 12a-12c provided with at least one jet nozzle 16 are placed on a base mount 11 freely movable along a carbonizing chamber 15 in coke oven 1 so that their delivery direction is approximately parallel to the sidewall of the chamber 15, whereas said lances are so arranged as to reach a gas pressure source 22 set outside the base mount 11, thus the carbon attached to various parts of the carbonizing chamber is removed through burning without locally cooling said chamber 16, in a labor-saving manner, also without hampering production works, with the carbon attached necessary for brick joint sealing left, and furthermore, enabling equipment cost to be reduced and oven load accompanying mounting on the coke oven to be reduced through simplification of the removal system.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for removing carbon deposited inside a coke oven carbonization chamber.

(Prior Art) Carbon is firmly attached to various parts of a coke oven carbonization chamber during coal carbonization. If left unattended, carbon adhering to the furnace wall surface will not only make it difficult to extrude coke, but also cause a decrease in the effective volume of the carbonization chamber and a decrease in the thermal conductivity of the furnace wall, so periodic removal work is necessary. Furthermore, if carbon adhering to the upper surface (ceiling surface) of the coking chamber and the upper surface of the furnace wall is left unattended, it will become difficult to level the coal evenly when charging, so periodic removal work is still necessary. Further, carbon adhering to the base of the riser pipe and the riser pipe portion, if left untreated, will make it difficult for the generated gas to flow out, so periodic removal work is required.

Therefore, conventional carbon removal methods include:
Regarding carbon that adheres to the furnace wall surface, for example,
- Length 5 to 6 with a pointed tip as described in Publication No. 2348
The fixed type is manually pushed down from the top of the furnace using a spear-shaped jig. However, with this method, the carbon layer is completely removed from the furnace wall! In addition to the basic disadvantage that the sealing function of the furnace and joints of carbon is impaired, there are other disadvantages such as high heat and heavy physical labor, and production work stops during this pushing-down process. be. Carbon adhering to the top surface (ceiling surface) of the carbonization chamber and the top surface of the furnace wall is difficult to push off because it forms a blind spot from above the furnace. In addition, as an alternative to this operation, the coal charging port and riser pipe are opened one hour before extrusion, and air is introduced through natural ventilation for combustion and removal.

However, one hour before extrusion, the coke oven gas was still 3
~5 Nm3/Hr Coal, ton (at 4
800kcaIL/Nm'), which is discharged from the riser together with the introduced air, which is uneconomical. In addition, the charging port through which air is introduced is cooled, leading to damage due to spalling and the like.

(Problems to be Solved by the Invention) The present invention eliminates carbon adhering to various parts of the coke oven carbonization chamber in a labor-saving manner without cooling the carbonization chamber locally.
It burns and removes the adhering carbon necessary for sealing brick joints without causing any hindrance to production operations.In addition, by simplifying the removal equipment, equipment costs can be reduced and the cost of installing the carbon in the coke oven body can be reduced. The objective is to provide combustion removal management that enables reduction of body load.

(Means for solving the problem) The present inventors opened a part of the carbonization chamber when removing carbon deposited in a coke oven, inserted at least one wooden injection lance, and injected oxygen or a gas containing oxygen. By swirling the gas along the wall of the coke oven, it is possible to effectively burn off the adhering carbon on the entire surface of the wall of the coke oven. It is extremely effective to use a trolley that is connected to a platform and towed and moved.Furthermore, when the combustion removal lance and the gas pressure source are connected, the gas pressure source is located outside the movable base, for example on the ground or on a fixed base. We learned that by installing it on a stand, it is possible to reduce the load, vibration, and load on the coke oven body, and to simplify the equipment.

Based on these findings, the present invention automates the removal of adhered carbon, which is difficult to control, and saves labor, freeing workers from high-temperature, heavy-duty labor, and reducing the load on the coke oven body by simplifying the equipment. The aim is to achieve extremely excellent economic efficiency and to ensure reliable combustion removal management.

The apparatus of the present invention will be described below based on an embodiment shown in the accompanying drawings.

Figure 1 shows a sectional view of the attached carbon combustion removal device according to the present invention when it is installed in a coke charging machine, and Figure 2 shows the cross section of the attached carbon combustion removal device according to the present invention when it is installed in a coke extruder. FIG. 3 shows a schematic cross-sectional view of a conventional coke oven.

First of all, in a conventional coke oven 1, a coal charging car 2 is movably mounted on the top, and on both sides, coke extruders 3 are mounted on a base 5 that freely runs on rails 4, for example. It moves along the carbonization chamber 6 of the furnace 1. Further, on the opposite side of the extruder 3, a coke guide car 7 that similarly moves along the carbonization chamber 6 is provided, and a coke fire extinguishing car 8 is disposed further below the coke guide car 7. The present invention is directed to the charging car 2, the extruder 3, or the coke guide car 7, which are these movable bases.
A lance 12axc (described later) is provided on one of these so as to be movable forward and backward, or similarly provided on a separate trolley that is connected to these bases and towed and moved.

FIG. 1 shows a removal device 9 that is towed and connected to a charging vehicle 2, and lances 12a--c are mounted on a base 11 that freely moves on rails 10 provided on a coke oven 1, and elevating guides 13a--
c and a hoist 14 so that it can move forward and backward within the carbonization chamber.

Near the tip of the lance 12aNC are upward, downward,
At least one horizontal gas injection nozzle 16 or a combination thereof is provided, and the nozzle 16 is disposed so that its discharge direction is approximately parallel to the side wall of the carbonization chamber 15. Furthermore, a gas supply pipe 17 communicating with a gas supply source is connected to the base end of each of the lances 12a to 12c. This supply pipe communicates with a gas pressure source 22 via a telescopic pipe 18 such as a flexible hose, a coupler head 19, a connecting coupler 24, and a feed pipe. The coupler head 19 is provided so as to be movable forward and backward by an advance/retreat device 20 such as a cylinder, and when it moves forward, it connects with the connecting coupler 24, and when it retreats, it connects with the coupler 24.
depart from. The connecting coupler 24 is installed on a fixed platform 21, such as on the ground, and is connected to a gas pressure source 22, such as a compressor or a booster blower, which is equipped with oxygen or a gas source containing oxygen (not necessary when using the atmosphere).
It is connected to one end of a feed pipe 23 that communicates with the. This connecting coupler 24 is provided for each lance or shared by a plurality of lances, and is connected to the coupler head in response to the carbon removal operation in the carbonization chamber, and is an automatic valve that opens and closes depending on the presence or absence of connection. 25 is the provision.

Furthermore, in FIG. 2, a lance 12a is attached to a coke extruder 3 which extrudes coke in a coke chamber 15 of a coke oven 1 while being moved by a movable base 26. It is provided so that it can be inserted into and taken out from the carbonization chamber 15 through the opening of the head 27. A telescopic tube 18 connected to a guide tube is connected to the proximal end of the lance 12a, and the other end of the guide tube is guided into a winder 29, and is wound with a winder such as a rubber tube or a flexible hose. It communicates with a bendable tube 30 such as. By winding or unwinding the tube, gas can be easily injected from the lance 12a even when the base 26 carrying the lance is moving. A gas pressure source 2 is connected to one end of the tube 30.
A feed pipe 23 is connected to the pipe 2. The gas supply is opened and closed by a manual or automatic valve 25.

After discharging the coke from the carbonization chamber 15, the lances 12a to 12C configured in this manner are moved into the chamber by a charging vehicle 2 serving as a base;
Alternatively, the lance 12aNc provided on the extruder 3, the coke guide car 7, or the traction curtain stand 11 can be connected to the hoist 14,
Alternatively, it is inserted by a forward/backward movement device such as the forward/backward movement mechanism 28.

After that, oxygen or a gas containing oxygen is supplied by the gas pressure source 22 to the lance 12aNc via the feed pipe 23 and the flexible hose 18, and the injection nozzle 16 is supplied to the lance 12aNc at a rate of 20 m/sec or more approximately parallel to the side wall of the carbonization chamber. The carbonization chamber 15 is injected with a high-speed flow, swirled and stirred in the carbonization chamber 15, and discharged, for example, into an opening in the riser pipe 31 or the like.

Carbon adhering to the wall surface of the carbonization chamber can be easily removed by this swirling and stirring, and can be removed extremely well without causing local damage to the joints or a drop in the temperature inside the furnace. In addition, by using this mechanism, it is possible to save labor and reduce costs, including equipment maintenance by simplifying the load on the coke oven body and the equipment.

This makes it possible to reduce the load on the coke oven body, reduce costs including maintenance costs by simplifying the equipment, and eliminate high-temperature, heavy-duty work through full automation. In addition, it is an extremely excellent apparatus for burning and removing adhering carbon, which can efficiently remove adhering carbon using simplified equipment, which has not been possible in the past.

[Brief explanation of drawings]

Figure 1 shows a sectional view of the attached carbon combustion removal device according to the present invention when it is installed in a coke charging machine, and Figure 2 shows the cross section of the attached carbon combustion removal device according to the present invention when it is installed in a coke extruder. FIG. 3 shows a schematic cross-sectional view of a conventional coke oven.

Claims (1)

[Claims] A lance provided with at least one injection nozzle is provided on a base that freely moves along the coking chamber of the coke oven so as to be able to move forward and backward, and the discharge direction of the injection nozzle of the lance is set approximately parallel to the side wall of the coking chamber. 1. An apparatus for burning and removing carbon deposited in a coke oven carbonization chamber, characterized in that the lance is connected to a gas pressure source fixedly installed outside the base.