JPH02261894A - Technique for uniform charging of coal into coke oven - Google Patents

Abstract

PURPOSE:To accomplish uniform charging of coal into a coke over without being accompanied by a reduction in operating efficiency or a substantial increase in construction cost by a technique wherein a chute is put into a coal charge hole and the opening of the chute is controlled depending upon the level of charging coal. CONSTITUTION:A charging car 1 is positioned so as to bring the charge duct in line with a charge hole 5 provided on the top of a coke oven, and chute 2 is inserted into the oven. Immediately after the start of charging, the chute opening theta is kept large so as to form a peak of coal at a position not directly below the charge hole. The chute opening is regulated in such a manner as to give the uniform level of charging coal at the end of charging. By this technique, the uniform level of charging coal can be achieved at the same time with the completion of charging. The adjustment of the chute opening may be performed by steps in the order opposite to the above; it can be appropriately determined considering the size of an oven, the particle size of coal, etc. Since the leveling is performed together with coal charging, there is no loss of the operating efficiency of the coke oven.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for charging coal into a room-fired coke oven.

<Prior art> When charging coal 4 from the coal charging car 1 in a room furnace type coke oven, the charging level of coal directly below the charging port 5 is high;
The part that comes off from the charging port is charged lower. Therefore, the level of coal becomes uneven and needs to be leveled out. For this reason, as disclosed in Japanese Utility Model Application Publication No. 56-107850, generally in a room furnace type coke oven, a leveler port 6 is provided in the furnace lid 3a as shown in FIG. A method is used in which the level of coal 4 is made uniform by inserting it into the furnace.

<Problems to be Solved by the Invention> However, in this method, since the leveler port 6 is provided in the furnace M3a, gas leaks from the leveler port 6, and spilled coal 9 is scraped back by the leveler 8 and comes out of the furnace. There was a problem with the occurrence of In addition, as coke ovens have become larger and wider in recent years, it is problematic in terms of operational efficiency that the extruder 7 serves both extrusion work and charge leveling, and installing a leveler in the extruder increases construction costs. becomes.

An object of the present invention is to propose a method for uniformly charging coal into a coke oven without reducing the operating efficiency of the coke oven, and in particular without significantly increasing construction costs.

Ku! ! ! Means for Solving the Problem> The present invention allows the opening degree to be adjusted from the coal charging port when charging coal with a coal charging car through the coal charging port opened at the top of the oven of a room furnace type coke oven. This is a method for uniformly charging coal into a coke oven, which is characterized by inserting a chute and controlling the opening degree of the chute according to the charging level of coal.

When powder (coal) is dropped from the upper hopper and deposited on -a, it forms a mountain-shaped pile with the apex just below the charging port, as shown in FIG.

However, by using a chute as shown in FIG. 6, it is possible to move the top of the pile to a location other than directly below the charging port. Further, by changing the opening degree θ of this chute, it is possible to change the falling position of the powder. Therefore, by controlling the opening degree of the chute according to the coal charging level, it is possible to make the final charging level uniform.

<Example> FIG. 1 is a sectional view of the entire chamber-type coke oven in which the present invention is implemented. The implementation procedure is explained below.
After the coal charging car 1 aligns the charging duct with the charging port 5 opened at the top of the coke oven, the chute 2 is inserted into the furnace.

Immediately after charging, as shown in FIG. 3, the opening degree θ of the chute is increased so that the top of the coal is formed at a location other than directly below the charging port. As the charging level increases, the chute opening is made smaller (as shown in Fig. 4, the chute opening is controlled so that the charging level becomes uniform at the end of charging. Uniformity of charging level is achieved at the same time as charging ends.

Note that the procedure for adjusting the opening degree of the chute may be performed in the reverse order as above, or may be adjusted as appropriate by taking into account the size of the furnace, the grain size of the coal, etc.

An example of the structure of the chute 2 is shown in FIG. 2. The chute 2 is inserted into the furnace from the coal loading car 1 via a chute lifting rod 10. The angle of the chute 2 is adjusted from the upper part II of the shoe 1-M closing link to the lower part 12 of the chute opening/closing link. When the upper part 11a+11b of the chute opening/closing link moves in the direction A, the chute moves in the opening direction (and when the upper part of the chute opening/closing link moves in the direction B, the chute moves in the closing direction.Chutes 2a and 2b can be opened individually to any desired degree. It is desirable to have a structure that can be set. The flow characteristics of charged coal vary depending on the composition, particle size, moisture content, etc., so the opening control should be done according to individual characteristics. When using strong coal, it is also effective to attach a vibrator (not shown) to the upper part of the chute lifting rod.

<Effects of the Invention> By charging according to the method of the present invention, the leveler port 6 installed in the furnace 113a can be eliminated, gas leakage and spilled coal can be prevented, and the environment is not only improved, but also It also has the effect of improving yield, and it also has a significant effect of reducing the cost required for gas leak prevention treatment.Furthermore, the newly installed extruder does not require the installation of a leveler, so it can be made smaller, making it easier to manufacture doors. Costs can also be reduced.

In addition, since the leveling operation is performed integrally with coal charging, there is no risk of impairing coke oven operating efficiency.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a coke oven during charging showing the overall concept when using the method of the present invention, Fig. 2 is a perspective view of an example of the structure of the chute, and Fig. 3V! J is a cross-sectional view showing the situation immediately after charging according to the present invention, FIG. 4 is a cross-sectional view showing the situation at the final stage of charging according to the present invention, and FIG.
The figure is a conceptual diagram showing the accumulation situation when powder (coal) is dropped from the charging port in the center of the top, Figure 6 is a conceptual diagram showing the accumulation situation when a chute is attached to the above, and Figure 7 is a conventional diagram. FIG. 3 is a sectional view showing leveling from an extruder. 1...Charging car, 3...Furnace lid, 3b...Guide car side, 5...Charging port, 7...1 quick release machine, 9...Spill coal, IO...Chute Lifting rod, 11... Upper part of chute opening/closing link, 2... Chute, 3a... Extruder side, 4... Coal, 6... Leveler mouth, 8... Leveler 12... Chute Lower part of opening/closing link, 13...Charging hood.

Claims (1)

[Claims] When charging coal with a coal charging car through the coal charging port opened at the top of the oven of a room furnace type coke oven, a chute whose opening degree can be adjusted is inserted from the coal charging port to adjust the coal charging level. A method for uniformly charging coal into a coke oven, characterized by controlling the opening degree of the chute accordingly.