JPS5923589B2 - coke oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coke oven based on a new coal charging method.

When operating a room type coke oven, a coal loading car is provided that runs above the coke oven, and the coal loading car that has mined the amount of coal required for one coal loading is located above a designated coal chamber, It is customary to open multiple coal charging ports to allow coal to fall into the coal chamber, and to level the coal by moving the leveler of the extruder back and forth.

At this time, black smoke and dust scattered from the coal charging port and leveler port contaminate the working environment, so various dust collectors are used, but these devices are not only complicated to work with but also undesirable from the standpoint of energy conservation. Therefore, a method has been devised in which coking coal is pneumatically conveyed through piping and filled into each coal chamber without the need for equalizing the coal, but this requires the installation of coal drying and preheating equipment, and the overall equipment cost is high. There is a problem that. The present invention relates to a coke oven equipped with a new coal charging equipment that is intended to solve these difficulties. Next, embodiments of the present invention will be described.

A closed container 4 in which coal is stored in each coal chamber is provided approximately at the center of each coal chamber above the coke oven. A closed transport path is provided in the upper part of the closed container 4. For example, a chain conveyor 2 is provided in a duct 1, and a chute 3 that can be opened and closed is provided in the duct 1. Inert gas is always injected into the duct 1 and the closed container 4, and the chute 3 is opened over the closed container corresponding to the coal chamber into which the transported coal is to be dropped, and closed over the other closed containers. A charging chute 55 is connected to the lower part of the closed container, and bifurcated inclined pipes 8, 8 are connected to the charging chute 5 and extend diagonally downward. Inclined pipe 8,
At the bottom of the charging chute where 8 is branched, the vertical pipe 6 is connected to the coal chamber 13.
The vertical passages 15 passing through the top brick of the coal chamber have no spacing between them, and the inclined zero pipes 8, 8 have their extension lines within the ramps 16, 16 passing through the top brick of the coal chamber. It extends and is maintained so that there is no gap between it and the ramp 16. In addition, the two-pronged inclined pipe may be made into an inclined pipe with further two prongs added thereto as necessary, and an extended line thereof may be connected by providing a ramp passing through the same brick above the coal chamber. Further vertical pipe 6
A connecting pipe 10 is provided to connect the inclined pipes 8, 8.
T and 9 are dampers provided on the charging chute 5 and the inclined pipe 8, respectively. 11 is a cleaning port of the inclined pipe; 12
07.0 is the inert gas inlet. In the figure, 13 is the coal chamber, 14 is the brick at the top of the coal chamber, and IT is the riser pipe.

Next, a method for charging a coke oven according to the present invention will be described.

In conventional coke oven operation, coke is discharged once carbonization in one coal chamber is completed. Next, coal is loaded using a coal loading car, and at the same time as coal loading is completed, carbonization of the newly loaded coal begins. Next, the coke from the coal chamber 7 [-] to be discharged is discharged, but as one step of this work, coal loading must be completed in an extremely short time, and the coal loading car It has become essential work to be carried out by

In the present invention, a conventional coal loading car is not used, and unlike conventional coal loading cars, equipment that must be moved in order to load coal into the next coal chamber is not used, so the basic idea of coal loading work is improved. Make it completely new. In other words, even if it takes a considerable amount of time to load one coal chamber, it will never interfere with the loading work of other coal chambers. Since there is a sealed container fixedly provided for each charcoal chamber, no inconvenience will occur even if the sealed container and the charcoal chamber are used integrally to carry out carbonization over a long period of time. To describe an example of the coal loading method according to the present invention, coal transported on a chain conveyor 2 in a duct 1 is rapidly transported to a coal chamber after coke discharge through a closed container 4, a charging chute 5 and a vertical pipe 6. The charcoal is charged into the charcoal chamber 13.

At that time, coal is deposited at a constant angle of repose, so it is charged up to the level of L1. After that, for example, when the damper 7 is closed and the damper 9 is opened, the coal flows through the inclined pipe and the L in the coal chamber.
Charged up to level 2. The coal loading work after coal discharge ends at this stage, and after that, the coal sent by chain conveyor 2 is temporarily stored in airtight container 4, and the planned amount of coal that must be initially charged into the coal chamber is This means that the difference in the amount of coal up to the level of L2 is stored in the closed container 4. The closed container is preferably insulated from the outside by closing the chute 3, and filled with inert gas as necessary. As carbonization progresses and the temperature inside the coal chamber rises, the moisture in the coal that has already been charged into the coal chamber evaporates, and some of the coal melts due to heat transfer from the coal chamber wall, and the coal piles up due to gas generation. deformation occurs, and the coal level in the coal chamber also fluctuates. At this time, since the coal fills the inclined pipe 8 and the like to the closed container above the coal chamber, the amount of coal that fills the voids created in the coal chamber falls into the coal chamber. Furthermore, the gas generated when carbonization starts and the gas remaining in the gap between the peaks of L1 and L2 are heated and flow out between the top of L2 and the coal chamber upper brick 14, and some of it flows into the connecting pipe. If the coal flows out through 10 into the inclined pipe 8, and 12 is connected to a trace amount of inert gas source, the inert gas flows out and the coal level L2 is naturally leveled to L3. If the opening degree of the damper 9 is reduced at this point, the coal charged from the inclined pipe 8 will move along with the gas flow and reach the level L3. This will complete the charging of the required amount of coal that was initially determined. As explained above, when using the coke oven according to the present invention, (1) there is no need for equalizing work when charging coal, so work can be performed in a completely sealed state.

Therefore, air pollution prevention equipment is not required. (2) Coal at the final stage of coalization can be charged over a long period of time in sealed containers installed individually in each coal chamber, and the charging is smooth because it is dried and preheated by carbonization gas. Since the carbonization time is shortened, there is no problem in carrying out the carbonization.

(3) Even if the coking coal is wet coal, it can be charged, so there is no need for coal drying or preheating equipment, and the drying effect can also be achieved by partially utilizing the rise in furnace temperature.

In addition, when coal drying and preheating equipment is used in conjunction, it is also possible to change the operating rate without changing the carbonization temperature, making it possible to adjust the production amount without adverse effects due to changing the furnace temperature.
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[Brief explanation of drawings]

The drawings are an example of an embodiment of the present invention, and FIG. 1 is a partial sectional view showing the concept thereof, and FIG. 2 is a partially enlarged sectional view. 2...Chain conveyor, 4...Tight container, 5...Charging chute, 6...Vertical pipe, 7,9...Damper , 8... Inclined pipe, 13... Coal chamber, 14... Coal chamber top brick.

Claims (1)

[Claims] 1. A closed container in which coal is stored on a closed transportation route above the coke oven coal chamber, a vertical pipe connected from the closed container to a vertical passage passing through the top brick of the coal chamber, and a vertical pipe branching from the vertical pipe. The vertical pipe has a two-pronged inclined pipe which extends diagonally downward and whose extension line connects to a ramp passing through the upper brick of the coal chamber, and a connecting pipe which connects the vertical pipe and the inclined pipe. and a coke oven equipped with a damper to adjust the flow rate of coal passing through the inclined pipe and an inert gas inlet.