JP4685975B2 - High temperature coal charging method - Google Patents

Description

The present invention relates to a high-temperature coal charging method in which high-temperature coal is charged into each carbonization chamber of a coke oven from a charcoal vehicle.
This application claims priority based on Japanese Patent Application No. 2009-98220 filed in Japan on April 14, 2009, the contents of which are incorporated herein by reference.

Conventionally, charging of coal into each carbonization chamber of a coke oven is performed according to the following procedure.
First, the coal loading vehicle is moved to the coal loading position of the coal tower provided in the coke oven, and the coal in the coal tower is supplied to a plurality of coal receiving hoppers of the coal loading vehicle. Next, after moving the coal car supplied with coal to the upper side of the carbonization chamber, carbonization in a reduced pressure state is performed from a plurality of coal receiving hoppers of the charcoal vehicle through each coal charging inlet provided in the carbonization chamber. Coal is charged in the room.

  Thus, as a method of charging coal into each carbonization chamber from a charcoal vehicle, for example, Patent Document 1 discloses that coal charging is performed in order to control the profile of coal charged into the carbonization chamber to a target profile. (Coal feeding) In the initial stage, a method is disclosed in which the amount of coal charged into the coal charging inlet is reduced as it is closer to the riser pipe (gas suction part).

JP-A-8-12974

When coal is charged from each coal charging inlet, a large amount of coal gas is generated at the initial charging stage. In the carbonization chamber, this coal gas is discharged from the dry main (discharge port) by the flow of the gas in the furnace toward the riser. However, in the method described in Patent Document 1, since the charging of coal from each coal charging inlet is started at the same time, the coal that is being charged from the coal charging inlet close to the riser and is falling (before deposition) Hinder the flow of gas in the furnace toward the riser. Therefore, the coal gas is hardly discharged from the dry main, and the gas pressure in the carbonization chamber increases rapidly as shown in FIG. 4A.
When the conventionally used wet coal (coal having a charging temperature of 60 ° C. or less) is charged into the carbonization chamber, the amount of coal gas generated at the initial stage of charging is not so large. Therefore, even when the above-described flow of the in-furnace gas is inhibited, the in-furnace gas rarely leaks from the seal portion between the coal charging device and the coal charging inlet of the carbonization chamber.
However, in recent years, high-temperature coal heated to 100 ° C. or higher has begun to be charged into the carbonization chamber. When this high-temperature coal is charged into the carbonization chamber, a large amount of coal gas is generated at the beginning of charging. For this reason, when the above-described flow of the in-furnace gas is inhibited, the in-furnace gas leaks from the seal portion due to an increase in the gas pressure in the carbonization chamber.

  The present invention has been made in view of such circumstances, and when charging high-temperature coal from a coal cart into a carbonization chamber via a plurality of coal charging ports provided in the carbonization chamber, the gas pressure in the carbonization chamber is rapidly increased. It is an object of the present invention to provide a method for charging high-temperature coal that can suppress a significant increase and outflow (leakage) of gas in the furnace to the outside of the furnace.

The present invention employs the following means in order to solve the above problems.
(1) A plurality of coal charging inlets are arranged side by side in the upper portion, and into a carbonization chamber having a first gas suction portion at the upper end portion, from a plurality of hoppers equipped with a cutting machine via the coal charging inlet. A method of charging high-temperature coal having an average temperature of 100 ° C. or higher , wherein each of the coal charging units is directed from the coal charging inlet furthest away from the first gas suction unit toward the first gas suction unit. Determining a charging start order of the high-temperature coal to the inlet; according to the charging start order, the cutting machine is driven at predetermined time intervals to successively charge the high-temperature coal from the hoppers ; When the charging of the high temperature coal into the carbonization chamber is completed, the driving of the cutting machine is stopped; a method of charging high temperature coal.

(2) A plurality of hoppers equipped with a cutting machine into a carbonization chamber in which a plurality of coal charging inlets are arranged side by side in the upper part and have a first gas suction part and a second gas suction part at both ends of the upper part. From the intermediate point between the first gas suction part and the second gas suction part. Determining the start order of charging of the high temperature coal with respect to each of the coal charging ports so as to go to the gas suction part and from the intermediate point to the second gas suction part; according to the charging start order; the drives the switching extruder was charged sequentially continuously the hot coal from the hopper of the predetermined time intervals; wherein the driving of the switching extruder After charging the high-temperature coal completely into the carbonization chamber The method of charging high-temperature coal.

(3) In the high temperature coal charging method according to the above (1) or (2), the predetermined time may be not less than 2 seconds and not more than 10 seconds.
(4) In the high temperature coal charging method described in (1) or (2) above, the average temperature of the high temperature coal may be 350 ° C. or less .

In the high temperature coal charging method according to the present invention, the high temperature coal charging start order for each coal charging inlet is determined according to the distance between the gas suction portion and the coal charging inlet, and the predetermined order is determined according to this charging start order. Hot coal is charged into each coal charging inlet every hour. Therefore, even in the initial stage of charging, a large amount of coal is generated without being disturbed by the flow of the gas in the furnace toward the gas suction part due to the coal being charged from the coal inlet near the gas suction part and falling (before deposition) Gas can be discharged.
Therefore, when high-temperature coal is charged into the carbonization chamber from the coal loading vehicle via a plurality of coal charging ports provided in the carbonization chamber, the gas pressure in the carbonization chamber rises rapidly and the gas in the furnace resulting from this rises. Outflow to the outside of the furnace can be suppressed.

It is explanatory drawing of the charging apparatus which applies the charging method of the high temperature coal which concerns on one Embodiment of this invention. It is a figure which shows the gas pressure fluctuation | variation in the carbonization chamber at the time of using the charging method of the high temperature coal which concerns on one Embodiment of this invention. It is a figure which shows the relationship between the space | interval of the drive start time of each cutting machine, and the maximum gas pressure in a carbonization chamber. It is explanatory drawing which shows the gas pressure fluctuation | variation in the carbonization chamber at the time of charging high temperature coal simultaneously to each coal charging inlet. It is explanatory drawing which shows the gas pressure fluctuation | variation in the carbonization chamber at the time of charging high temperature coal in the order different from the charging method of the high temperature coal of this invention. It is explanatory drawing which shows the gas pressure fluctuation | variation in the carbonization chamber at the time of using the charging method of the high temperature coal which concerns on one Embodiment of this invention.

Next, specific embodiments of the present invention will be described with reference to the accompanying drawings in order to help understanding of the present invention.
First, a charging apparatus to which a high temperature coal charging method according to an embodiment of the present invention is applied will be described.
A coke oven 10 shown in FIG. 1 has a plurality of carbonization chambers 11 (a partial cross section of one carbonization chamber is shown in FIG. 1), and a combustion chamber (not shown) is provided between adjacent carbonization chambers 11. ) Is provided.

In the upper part of each carbonization chamber 11, a plurality of (for example, 3 to 5 and 5 in this case) coal charging inlets 12 to 16 extend from the extruder side PS of the carbonization chamber 11 to the guide vehicle side CS. , Are arranged side by side with a gap.
A riser pipe (an example of a first gas suction unit) 18 connected to the dry main 17 is provided on the extruder side PS (first upper end portion) of each carbonization chamber 11. The riser pipe 18 has an ejector function, and the furnace gas generated in the carbonization chamber 11 can be forcibly discharged to the dry main 17. The ascending pipe 18 is provided with a pressure gauge 19 for measuring the gas pressure in the carbonization chamber 11.

  A jumper pipe (second pipe) that communicates the inside of the carbonizing chamber 11 with the inside of another carbonizing chamber near the carbonizing chamber 11 is connected to the guide wheel side CS (second upper end portion) of the carbonizing chamber 11. An example of the gas suction part) 19a may be provided. The jumper pipe 19a is, for example, a mini stand pipe disclosed in Japanese Patent Laid-Open No. 2008-150536. Instead of the jumper pipe 19a, a riser pipe having the same function as the riser pipe 18 described above may be provided. Thus, when the rising pipe 18 and the jumper pipe 19a are respectively provided on the extruder side PS (first upper end portion) and the guide wheel side CS (second upper end portion) of the carbonization chamber 11, The gas in the carbonization chamber 11 is sucked from the ascending pipe 18 and the jumper pipe 19a and exhausted outside the carbonization chamber 11. Here, the jumper pipe 19 sucks the gas in the carbonization chamber 11 through the riser pipe provided in the other carbonization chamber described above. Only the riser pipe (an example of the first gas suction part) may be provided on the guide wheel side CS (second upper end part).

  On the upper part of the coke oven 10, a coal loading vehicle 20 (moving machine) loaded with high-temperature coal is arranged so as to be able to move above each carbonization chamber 11. The coal loading vehicle 20 includes a plurality (here, 5) of coal receiving hoppers 21 to 25 that store high-temperature coal from the front (extruder side PS) to the back (guide vehicle side CS) of the carbonization chamber 11. , Are arranged side by side with a gap. Under the coal receiving hoppers 21 to 25, cutting machines 26 to 30 for cutting out the stored high temperature coal are provided. Further, chutes 31 to 35 are provided below the cutting machines 26 to 30. By moving these chutes 31 to 35 up and down, the lower ends of these chutes 31 to 35 can be attached to and detached from the coal inlets 12 to 16 of the carbonization chamber 11.

  Moreover, after lowering | hanging the chute | shoots 31-35 and connecting the lower end of this chute | shoot 31-35 to the coal loading inlets 12-16, by driving each cutting machine 26-30, each coal receiving hoppers 21-25 are driven. The high temperature coal inside can be charged into the carbonization chamber 11 through the coal charging ports 12 to 16.

Then, the charging method of the high temperature coal which concerns on this embodiment is demonstrated.
In the high temperature coal charging method according to the present embodiment, for example, the high temperature coal is charged into the carbonization chamber 11 through the coal charging inlets 12 to 16 using a charging device as shown in FIG. Below, the specific example of the charging method of this high temperature coal is demonstrated in detail.

First, while charging high-temperature coal with an average temperature of 200 ° C. from five coal charging inlets into a reduced-pressure carbonization chamber, gas pressure fluctuations in the carbonization chamber were investigated. The chamber volume of the carbonization chamber was 44 m ³ , and the amount of high-temperature coal charged into the carbonization chamber was 33 tons (6.6 tons per coal receiving hopper). Moreover, the gas pressure in the carbonization chamber was measured using a pressure gauge provided in the rising pipe.
Conventionally, when charging high temperature coal, each cutting machine provided at the lower part of each hopper has been driven simultaneously. Since the temperature of the floor surface and wall surface of the carbonization chamber is high, a large amount of gas is generated when high-temperature coal adheres to or collides with the floor surface and wall surface of the carbonization chamber in the initial stage of charging. As a result, the gas pressure in the carbonization chamber suddenly increases and temporarily changes from a reduced pressure state to a positive pressure state, and the gas in the furnace flows out from the seal part connecting each coal charging inlet and the lower end of each chute. It was. In addition, when high temperature coal accumulates on the floor surface of a carbonization chamber and this floor surface is covered, the generation amount of the gas accompanying charging of high temperature coal will fall. Therefore, in order to keep the in-furnace gas pressure in a reduced pressure state, it is necessary to smoothly exhaust the gas generated at the initial stage of charging through the riser to the outside of the carbonization chamber.

As mentioned above, when driving each cutting machine simultaneously, the high temperature coal in each coal receiving hopper is simultaneously charged into the carbonization chamber. In this case, a large amount of gas (coal gas) is generated from the high-temperature coal charged from each coal port at the initial charging stage. Due to the large amount of gas generated at the beginning of charging, a flow of in-furnace gas toward the riser pipe is generated. However, the flow of the gas in the furnace is hindered by the high-temperature coal being charged (before deposition) from the coal inlet near the riser.
As a result, the gas in the furnace cannot be smoothly flowed into the riser, the gas pressure in the carbonization chamber increases, and the gas in the furnace flows out from the seal portion connecting each coal charging inlet and the lower end of each chute. To do. In this case, in particular, the gas generated at a position far from the ascending pipe (gas suction part) is unlikely to flow into the ascending pipe, and thus easily flows out from the seal part.

Therefore, in the present embodiment, high-temperature coal is charged into each coal charging inlet so as to go from the coal charging inlet 16 farthest from the rising pipe 18 toward the rising pipe 18 (coal charging inlet 21 closest to the rising pipe 18). A starting order (ascending order) is determined, and high-temperature coal is charged into each coal charging inlet at predetermined time intervals in accordance with this charging start order. Here, in order to ensure that the gas pressure in the carbonization chamber 11 is in a reduced pressure state, the coal charging inlets preferably have different priorities with respect to the charging start order of the high-temperature coal with respect to the coal charging inlets. That is, it is preferable that the timing for charging high temperature coal into each coal charging inlet is not the same. Specifically, a cutting machine 30 above the coal charging inlet 16, a cutting machine 29 above the coal charging inlet 15, a cutting machine 28 above the coal charging inlet 14, and a cutting above the coal charging inlet 13. The cutting machines 26 to 30 are sequentially driven every predetermined time in the order of the machine 27 and the cutting machine 26 above the coal inlet 12. When the gas generation amount when driving the cutting machine 27 above the coal charging port 13 is small (for example, when the predetermined time is long), the cutting machine 27 and the coal charging port 12 above the coal charging port 13. The timing of driving the upper cutting machine 26 may be shorter than the predetermined time.
Thus, by sequentially driving each of the cutting machines 26 to 30 at a predetermined time interval (here, an interval of about 5 seconds), the gas pressure in the carbonization chamber 11 is rapidly increased as shown in FIG. Therefore, the depressurized state in the carbonization chamber 11 could always be maintained. Here, the arrow in FIG. 2 has shown the drive start time of each cutting machine 26-30.
Moreover, in FIG. 4A-4C, the relationship between the drive start time of each cutting machine 26-30 and the maximum pressure of the gas in a furnace is shown. When each of the cutting machines 26 to 30 is driven at the same time, as shown in FIG. 4A, the gas pressure in the carbonizing chamber 11 increases rapidly at the initial charging stage of the high temperature coal. Similarly, when high-temperature coal is charged in a charging start order (reverse order) different from that of the present embodiment, as shown in FIG. 4B, it is being dropped from the coal charging inlet on the side close to the gas suction part. Since the flow of the gas in the furnace heading to the gas suction unit is hindered by the coal, the gas pressure in the carbonization chamber 11 increases rapidly at the initial charging stage of the high temperature coal. However, in this embodiment, as shown in FIG. 4C, the gas pressure in the carbonization chamber 11 hardly varies. The arrows in FIGS. 4A to 4C indicate the drive start times of the cutting machines 26 to 30.

Further, when a jumper pipe 19a is further provided at the upper end portion (upper end portion) of the carbonization chamber 11, an intermediate point between the rising pipe 18 and the jumper pipe 19a (equal distance from the rising pipe 18 and the jumper pipe 19a). Point) to the riser pipe 18 and from the intermediate point between the riser pipe 18 and the jumper pipe 19a to the jumper pipe 19a, the start order (ascending order) of the high-temperature coal for each coal charge inlet is determined. To do. Thereafter, according to this charging start order, high temperature coal is charged into each coal charging inlet at predetermined time intervals. Specifically, the cutting machine 28 above the coal inlet 14, the cutting machines 27 and 29 above the coal inlets 13 and 15, and the coal inlet at a substantially equal distance from the ascending pipe 18 and the jumper pipe 19 a. The cutting machines 26 to 30 are sequentially driven every predetermined time in the order of the cutting machines 26 and 30 above 12 and 16. At this time, the cutting machine 27 and the cutting machine 29 may be driven simultaneously or sequentially. Further, the cutting machine 26 and the cutting machine 30 may be driven simultaneously or sequentially.
Further, a cutting machine 28 above the coal charging inlet 14, a cutting machine 27 above the coal charging inlet 13, a cutting machine 26 above the coal charging inlet 12, a cutting machine 29 above the coal charging inlet 15, Each cutting is performed at predetermined intervals in the order of the cutting machine 30 above the coal inlet 16 or in the order of the cutting machine 28, the cutting machine 29, the cutting machine 30, the cutting machine 27, and the cutting machine 26. The unloaders 26 to 30 may be sequentially driven.
That is, with respect to the coal charging inlet on the side of the rising pipe 18 from the intermediate point between the rising pipe 18 and the jumper pipe 19a, the coal charging inlet is directed from the intermediate point between the rising pipe 18 and the jumper pipe 19a toward the rising pipe 18. Are different in order of priority (that is, the timing of charging high temperature coal into each coal inlet is not all the same), the order of starting the high temperature coal with respect to each coal inlet is determined. Similarly, with respect to the coal charging inlet on the side of the jumper pipe 19a from the intermediate point between the rising pipe 18 and the jumper pipe 19a, the coal charging inlet is directed from the intermediate point between the rising pipe 18 and the jumper pipe 19a to the jumper pipe 19a. The order of starting the high-temperature coal charging for each coal charging inlet is determined so that all of the inlet priorities are different.
When the number of coal charging inlets is an even number, the cutting machines corresponding to two coal charging inlets that are substantially equidistant from the two gas suction portions may be driven simultaneously or sequentially. .

Here, it is preferable that each of the cutting machines 26 to 30 is sequentially driven every predetermined time of 2 seconds to 10 seconds.
The predetermined time (interval) will be described with reference to FIG. FIG. 3 shows the relationship between the drive start time interval of each cutting machine and the maximum gas pressure in the carbonization chamber. In FIG. 3, the operating conditions other than the interval at which the driving of the cutting machine is started are the same as those in FIG. When all the cutting machines are driven at the same time, the driving start time interval of the cutting machine in FIG. 3 is 0 second.

As shown in FIG. 3, the gas pressure tends to be positive when the interval at which each cutting machine is started is less than 2 seconds. The reason why the gas pressure becomes positive is that the interval at which the cutting machine starts to be driven is too short, and the gas pressure that rises after the cutting machine is driven is reduced before the gas pressure increases. This is thought to be due to the gas pressure that rises after the machine is driven. In order to more reliably maintain the gas pressure at a reduced pressure, the interval (predetermined time) is more preferably 3 seconds or more.
On the other hand, when the interval exceeds 10 seconds, the interval is too long, the time required for charging the high-temperature coal into all the carbonization chambers becomes long, and the operating rate of the coke oven is lowered. As shown in FIG. 3, when the interval is 7 to 8 seconds, the gas pressure tends to be substantially constant. Therefore, from the viewpoint of work efficiency, the interval is more preferably 8 seconds or less.
Therefore, the drive start interval (predetermined time) of each cutting machine is preferably 3 seconds or more and 10 seconds or less. The upper limit of the most preferable interval (predetermined time) is 7 seconds, and the lower limit is 4 seconds. Each interval (predetermined time) may be the same or different.

In the present embodiment, high-temperature coal of 100 ° C. or higher and 350 ° C. or lower is preferably used. When the temperature of the high temperature coal charged into the carbonization chamber 11 is increased, the high temperature coal is easily gasified. Therefore, when the average temperature of the high-temperature coal charged into the carbonization chamber 11 is 100 ° C. or higher and 350 ° C. or lower, the effect of suppressing a rapid increase in gas pressure becomes significant.
Therefore, the average temperature of the high temperature coal is preferably 100 ° C. or higher and 350 ° C. or lower. By setting the lower limit of the average temperature of the high-temperature coal to 150 ° C. and further to 200 ° C., the above-described effects become more remarkable.

After the above operation, when the charging of the high-temperature coal into the carbonization chamber 11 is completed, the driving of each of the cutting machines 26 to 30 is stopped. Thereafter, the chutes 31 to 35 are removed from the coal charging inlets 12 to 16, and the charcoal vehicle 20 is moved to another carbonization chamber 11 into which high temperature coal is next charged, and the above-described operation is repeated.
Accordingly, when high temperature coal is charged into the carbonization chamber 11 from the coal loading vehicle 20 via the plurality of coal charging inlets 12 to 16 arranged side by side above the carbonization chamber 11, the gas pressure in the carbonization chamber 11 is rapidly increased. It is possible to prevent a rise in the furnace gas to the outside.
In addition, in the said embodiment, in order to insert high temperature coal into a coal charging entrance, the coal loading vehicle 20 and each cutting machine 26-30 were used. The coal loading vehicle 20 can accurately weigh the amount of high-temperature coal, and can transport it as safely as possible while sealing the high-temperature coal (blocking from the outside air). Therefore, a charcoal vehicle is most preferably used as a method for transporting high-temperature coal. However, a belt conveyor or chain conveyor and chute may be used to charge high temperature coal into the coal inlet.

Next, an example performed for confirming the effects of the present invention will be described with reference to FIG.
Five coal charging inlets 12 to 16 are arranged side by side at intervals from the front to the back of the carbonization chamber 11 in the upper portion of the carbonization chamber 11 in which the high-temperature coal is charged. Moreover, the indoor volume of the carbonization chamber 11 is 44 m ³ . In addition, the furnace temperature of the carbonization chamber 11 was set to about 1000 to 1100 ° C.
Various high temperature coals having different average temperatures were charged into the carbonization chamber 11 while changing the order and interval of the charging start. The gas pressure in the carbonizing chamber 11 during charging of high-temperature coal was measured with a pressure gauge 19 in the riser pipe 18 to investigate the presence or absence of outflow of furnace gas from the carbonizing chamber 11.
The results are shown in Table 1.

“Gas suction part” in Table 1 indicates the type of gas suction part provided in the carbonization chamber 11. That is, in the “rising pipe”, only the rising pipe 18 is provided on the extruder side PS of the carbonization chamber 11. In the “rising pipe + jumper pipe”, the raising pipe 18 is provided on the extruder side PS of the carbonization chamber 11, and the jumper pipe 19 a is provided on the guide wheel side CS.
Moreover, the number described in the “order” of “starting charging of high temperature coal” is the number of each of the coal receiving hoppers 21 to 25 illustrated in FIG. 1. Here, in the “arrows (→)” between the numbers, the driving of the cutting machines 26 to 30 corresponding to the coal receiving hoppers 21 to 25 is sequentially started at predetermined “intervals”. In “,”, the cutting machines 26 to 30 corresponding to the coal receiving hoppers 21 to 25 are simultaneously driven.
The presence or absence of outflow of gas in the furnace was judged by visually confirming white smoke. When white smoke could not be confirmed, it was judged as “No”, and when white smoke was confirmed, it was judged as “Yes”.

In Examples 1 to 7 in Table 1, the cutting machines 26 to 30 provided in the coal receiving hoppers 21 to 25 are sequentially driven every predetermined time (2 to 8 seconds).
In Examples 1 to 3, the rising pipe 18 was used as the gas suction part. In this case, charging of the high-temperature coal was started from the coal charging inlet 16 farthest from the rising pipe 18 toward the coal charging inlet 12 closest to the rising pipe 18. That is, the order of the coal receiving hopper 25, the coal receiving hopper 24, the coal receiving hopper 23, the coal receiving hopper 22, and the coal receiving hopper 21 (priority of coal charging inlet for charging high temperature coal) is “1” th, respectively. , “2”, “3”, “4”, and “5”. In Examples 4 to 7, both the ascending pipe 18 and the jumper pipe 19a were used as the gas suction part. In this case, from the coal inlet 14 that is substantially equidistant from both the riser pipe 18 and the jumper pipe 19a, to the coal inlet 12 that is closest to the riser pipe 18 and the coal inlet 16 that is closest to the jumper pipe 19a. And started charging high-temperature coal.
On the other hand, in Comparative Examples 1 and 2, the cutting machines 26 to 30 of the coal receiving hoppers 21 to 25 were simultaneously driven. In Comparative Example 1, the rising pipe 18 was used as the gas suction part. Moreover, in the comparative example 2, both the riser pipe 18 and the jumper pipe | tube 19a were used as a gas suction part.

In Examples 1-7, each cutting machine 26-30 of each coal receiving hopper 21-25 was driven sequentially. Therefore, in Examples 1-7, compared with Comparative Examples 1 and 2, the maximum pressure of the furnace gas could be reduced, and the outflow of the furnace gas could be suppressed.
In Example 5, since the high-temperature coal charging start interval (predetermined time) was shorter than the lower limit of the optimum range (for example, 3 seconds or more) described above, the gas in the furnace slightly flowed out. However, this outflow amount in the furnace does not cause operational problems. In Examples 1-4, 6, and 7, since the high temperature coal charging start interval (predetermined time) was set to 3 seconds or more, outflow of gas in the furnace could be prevented.
In Comparative Examples 1 and 2, the cutting machines 26 to 30 of the coal receiving hoppers 21 to 25 were simultaneously driven. Therefore, as shown in FIG. 4A, the maximum pressure of the in-furnace gas rapidly increased, and an amount of the in-furnace gas causing an operational problem flowed out.

In addition, the results obtained when only the rising pipe 18 is provided at the upper end (upper end) of the carbonization chamber 11 (Examples 1 to 3) and the upper ends (upper both ends) of the carbonization chamber 11 are raised. By comparing the results (Examples 4 to 7) in which both the pipe 18 and the jumper pipe 19a are provided, the maximum pressure of the furnace gas and the outflow of the furnace gas are not affected by the installation of the jumper pipe 19a. confirmed.
By using the high temperature coal charging method of the present invention, gas is sucked by the coal being charged from the coal charging inlet on the side close to the gas suction portion under the condition that a large amount of gas is generated in the initial stage of high temperature coal charging It was confirmed that the flow of gas in the furnace heading to the section was not obstructed. Furthermore, it was confirmed that the rapid increase in the gas pressure in the carbonization chamber can be suppressed, and the smoke generation from the carbonization chamber can be suppressed and further prevented.

  The present invention has been described above with reference to the above embodiment. However, the present invention is not limited to the configuration described in the above embodiment. In other words, the present invention includes other embodiments and modifications that can be considered within the scope of the matters described in the claims. For example, a case where the high temperature coal charging method of the present invention is configured by combining a part or all of the above embodiment and the modified examples is also included in the scope of the right of the present invention.

  When charging high-temperature coal from a coal loading vehicle into the carbonization chamber via a plurality of coal inlets arranged in the carbonization chamber, the rapid increase in gas pressure in the carbonization chamber is suppressed, and the gas in the furnace flows out to the outside Provided is a method for charging high-temperature coal that can be prevented.

DESCRIPTION OF SYMBOLS 10 Coke oven 11 Coking chamber 12-16 Coal charging inlet 17 Dry main 18 Rising pipe (gas suction part, 1st gas suction part)
19 Pressure gauge 19a Jumper tube (gas suction part, second gas suction part)
20 Charcoal vehicles 21-25 Coal receiving hoppers 26-30 Cutting machines 31-35 Chute

Claims (4)

A plurality of coal inlets are arranged side by side in the upper part, and an average temperature is passed through the coal inlets from a plurality of hoppers equipped with a cutting machine into a carbonization chamber having a first gas suction part at the upper end. A method of charging high temperature coal at 100 ° C or higher ,
Determining the start order of charging of the high-temperature coal with respect to each of the coal charging ports so as to go from the coal charging port farthest from the first gas suction port to the first gas suction port;
According to this charging start order, the drives the switching extruder was charged sequentially continuously the hot coal from the hopper of the predetermined time intervals;
When the charging of the high temperature coal into the carbonization chamber is finished, the drive of the cutting machine is stopped;
A method for charging high-temperature coal characterized by the above. A plurality of coal inlets are arranged side by side in the upper part, and the coal is supplied from a plurality of hoppers equipped with a cutting machine into a carbonization chamber having a first gas suction part and a second gas suction part at both ends of the upper part. A method of charging high temperature coal having an average temperature of 100 ° C. or higher through a charging port,
From the intermediate point between the first gas suction part and the second gas suction part toward the first gas suction part and from the intermediate point toward the second gas suction part, Determining the start sequence of charging the hot coal for each coal inlet;
According to this charging start order, the drives the switching extruder was charged sequentially continuously the hot coal from the hopper of the predetermined time intervals;
When the charging of the high temperature coal into the carbonization chamber is finished, the drive of the cutting machine is stopped;
A method for charging high-temperature coal characterized by the above.   The method for charging high-temperature coal according to claim 1 or 2, wherein the predetermined time is 2 seconds or more and 10 seconds or less. The method for charging high-temperature coal according to claim 1 or 2, wherein an average temperature of the high-temperature coal is 350 ° C or lower .

Images