JPH07126650A - Method for carrying rapidly heated caked coal - Google Patents

Abstract

PURPOSE:To provide a method for producing coke for blast furnaces by the rapid heating of caked coal, capable of preventing the adhesion of the caked coal to a carrying device, etc., and the bridging of the caked coal due to caking substances bled from the surface of the caked coal to stably carry the caked coal to a coke oven. CONSTITUTION:In a method for caking coal by rapidly heating the coal up to the soft-melting temperature range of the coal and subsequently hot-molding or compact-molding the heated coal, a carbon material is added to the semi- melted caked coal rapidly heated after the caking process to coat the surface of the caked coal with the carbon material, thus preventing the mutual contact between the surfaces of the coal cakes and avoiding the clustering of the coal cakes. Since the carbon material is not denatured even when receiving the thermal hysteresis of the carbonization and dry distillation and plays the role of an excellent spacer even on the coke-producing process, the cake sizes of the coke can be arranged in a uniform distribution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel rapid heating agglomerated coal conveying method. More specifically, the present invention relates to a rapid heating agglomerated coal transportation method capable of stably transporting agglomerated coal by rapid heating after the agglomeration process to a coke oven in a coke manufacturing method.

[0002]

2. Description of the Related Art A conventional blast furnace coke production method by high temperature (about 1000 ° C.) carbonization is roughly divided into a coal pretreatment step, a coal carbonization step, and a red hot coke extinguishing step, as shown in FIG. ing.

First, in the coal pretreatment step, the charging of the coke in the coke oven before the carbonization is adjusted. In this adjustment work, the coal is generally crushed by using an appropriate crusher, and then the appropriate blending is performed. Depending on the machine, several types of coal are blended so that the coke strength will correspond to the intended use (there may be reverse blending and crushing in this order).

Subsequently, in the coal carbonization step, a fixed amount of coal (charged coal) adjusted in the coal pretreatment step is loaded into a charging vehicle 51 on the coke oven 50, and the carbonization chamber 52 of the coke oven 52 is loaded. Is charged from the charging port 53 above the carbonization chamber 52 (the temperature of charging coal is room temperature). Then, in the coke oven 50, the air and the poor gas or rich gas (not preheated) preheated in the refractory brick heat storage chamber 54 in the lower part of the carbonization chamber 52 rise to the upper part, and the combustion chamber 55.
Burned in. The flue temperature at this time is usually 120.
It is about 0 to 1350 ° C. The carbonization chamber 52 and the combustion chamber 5
5 is mainly arranged by a wall made of silica stone and is alternately arranged. The combustion heat of the combustion chamber 55 is transferred to the coal in the carbonization chamber 52 through the silica stone brick. Indirect heating is performed at about 1000 to 1300 ° C. After that, the furnace lids on both sides of the carbonization chamber 53 are opened, and the generated red hot coke is extruded by the extrusion ram 57 installed in the extruder 56.

Then, in the red hot coke extinguishing process, the red hot coke extruded and extruded in the coal carbonization process (800 to
(1000 ° C.) is loaded into the coke bucket 59 through the grid of the coke guide wheel 58, then guided by a train (not shown) to the coke dry fire extinguisher 60, and charged into the fire extinguisher. This is a coke for a blast furnace, which is brought into contact with an inert gas in the fire extinguishing tower 60 to exchange heat with the extinguishing and cooling to a temperature of about 100 ° C., taken out, and taken out.

However, in such a conventional coke production method, since the thermal conductivity of coal is extremely small, heat is gradually transferred from both side walls of the carbonization chamber toward the center, and thermal decomposition occurs. Conventionally, a large temperature difference occurs between the furnace wall of the carbonization chamber and the center of the furnace, and a considerable amount of time, for example, about 10 hours has elapsed after charging the coal.
Even when the temperature reached 00 to 1000 ° C and was in the coke state, the temperature of coal in the central part of the furnace was still about 200 to 300 ° C. In this way, the average temperature rise of coal in the coke oven is 3 to 5 ° C./minute, which is very slow.
It takes about 14 to 20 hours as the carbonization time, which requires a long period of time. Usually, the carbonization time is set to 1 to 3 hours after the carbonization time to make the coke quality uniform, which is a problem in terms of productivity and energy consumption. It was a big one.

[0007] In such coke production, as a means for shortening the dry distillation time, a method of predrying the charged coal into a coke oven in a coal pretreatment step, for example, in a gas stream heating system to a temperature of about 100 to 200 ° C. is used. Are known.

According to such a method, it is possible to increase the bulk density of the charging coal charged into the coke oven by about 10% as compared with the normal moisture-containing coal. It is said that the amount can be reduced by about 30% as compared with the case of charging coal.

Due to the recent improvement in thermal efficiency of coke ovens,
The total of the energy required for this preheating and the energy required for the subsequent carbonization is almost the same as or slightly lower than the energy required for carbonization when charged into the coke oven at room temperature. Effect is low.

Therefore, the applicant of the present invention discloses, as a means for shortening the carbonization time in the production of coke for a blast furnace, in Japanese Patent Application No. 5-267592, the amount of coal from the softening start temperature of the coal to 50 ℃ down to a predetermined temperature within the range (not including the softening start temperature) up to 10 ²
Rapid heating is performed at a heating rate of -10 ⁶ ° C / min, and then 0.1-1000 kg / cm ² with the temperature range maintained.
After hot forming (agglomeration) at a pressure of, the mixture is charged into a coke oven and carbonized to a temperature of 600 to 900 ° C., and thereafter,
A novel blast furnace coke production method for obtaining high-strength coke by heating coke discharged from a coke oven to at least 900 ° C. by bringing it into contact with an oxidizing gas (hereinafter, simply referred to as agglomerated coal by rapid heating). (Also referred to as a blast furnace coke production method). In addition, in this specification, the process of performing hot forming and agglomeration is also simply referred to as an agglomeration process.

According to the above method for producing coke for blast furnace using agglomerated coal by rapid heating, productivity is improved, energy saving is improved, facility cost is reduced, environmental pollution is reduced and raw materials are used in addition to shortening the dry distillation time. It is said that it can deal with the diversification of coal.

In the conventional coke manufacturing method,
There is known a method of controlling the grain size of agglomerated coke by controlling cracks in coking by adding a carbonaceous material to coal.

[0013]

However, in the method for producing blast furnace coke with agglomerated coal by the rapid heating described above,
The agglomerated coal obtained by abruptly heating coal to agglomerate it in a semi-molten state by hot forming needs to be transferred or transported as it is in a constant temperature state (normally (temperature after heating -100 ° C) within about ° C). Therefore, due to the melting of the caking substance or the agglomerated coal that exudes from the agglomerated coal surface, a clustering phenomenon (grape-like agglomeration phenomenon) is likely to occur, and it adheres in the transportation device and the storage device. There was a problem in that the agglomerated coal was eventually blocked in the device due to the hanging state, and normal transfer and storage could not be performed. Therefore, in the method for producing coke for blast furnace with rapid heating charcoal, in order to stably convey the agglomerated coal to the coke oven, it is necessary to prevent the agglomeration of the agglomerated coal in the apparatus and to suspend it from above. It is an important issue that must be solved before putting the manufacturing method into practical use.

However, in the conventional method of adding the carbonaceous material to the coal, the coal used for coking is not in a semi-molten state, there is no exudation of a caking substance or the like on the surface of the coal particles, and the coal is not transported. Such coal particles do not cause adhesion to the inner wall of the carrier, etc., and the added carbonaceous material is exclusively
It is used as a binder for the lump coke formed during coking in a coke oven to suppress the occurrence of cracks and to control the grain size of the lump coke to have a uniform distribution. Therefore, based on the above findings, we found a method capable of preventing sticking substances exuding from the surface of the agglomerated coal or adhesion in the transport and storage device, which is caused by the clustering phenomenon due to melting of the agglomerated coal, and hanging. It can be said that it is extremely difficult to obtain.

Accordingly, it is an object of the present invention to provide a novel method for transporting rapidly heated agglomerated coal.

Another object of the present invention is a method for producing blast furnace coke with agglomerated coal by rapid heating, in which a caking substance exuding from the surface of the agglomerated coal or a transport manifested by a clustering phenomenon due to melting of the agglomerated coal. Further, the present invention provides a method capable of preventing adhesion and hanging in a storage device, and stably transporting agglomerated coal by rapid heating after the agglomeration process to a coke oven.

[0017]

In order to achieve the above object, the present inventor has conducted earnest research on a novel rapid heating agglomerated coal transportation method, and as a result, controlled the particle size of agglomerated coke by controlling cracks in conventional coking. Focusing on the non-caking carbonaceous material that was used as an additive for carrying out, and actively adhering such carbonaceous material to the caking substance on the surface of the agglomerated coal particles in the semi-molten state in advance. Then, it was found that the carbonaceous material can serve as a spacer between agglomerated carbon particles. As a result, the non-caking carbonaceous material is deteriorated by the history of carbonization heat, and is not particularly melted. It was found that the agglomerated coal having the material on the surface thereafter has a particle structure that does not adhere to the agglomerated coal particles or on the surface of the apparatus, and the present invention has been completed based on this finding.

That is, the object of the present invention is (1) in a method of rapidly heating coal to a softening melting temperature range of coal and hot-compacting or compacting the coal to agglomerate the coal. This is achieved by a method of transporting rapidly heated agglomerated coal, which is characterized by adding carbonaceous material to the coal.

The present invention is characterized in that, in the above-mentioned method (1) for conveying rapidly heated agglomerated coal, the carbonaceous material added is coke powder produced.

[0020]

In the method for transporting rapidly heated agglomerated coal in the production of coke according to the present invention, carbon material is added to the rapidly heated semi-molten agglomerated coal after the agglomeration process,
By coating the surface of the agglomerated coal with a carbonaceous material, it is possible to prevent the agglomerated coals from contacting each other on the surface and avoid clustering. Further, the carbonaceous material thereafter does not deteriorate even if it is subjected to a heat history due to carbonization and carbonization, and thus plays a role of an excellent spacer in coking, so that the coke particle size can be adjusted to a uniform distribution.

Examples of the present invention will be described below in more detail based on the embodiments.

FIG. 1 is a schematic diagram showing the construction of an example of a blast furnace coke producing apparatus using the rapid heating agglomerated coal conveying method according to the present invention.

In order to produce blast furnace coke according to the present invention using this apparatus, first, coal is pulverized in advance according to a conventional method to adjust the particle size. Although it depends on the type of coal, the particle size is adjusted to 3 mm or less, for example. As the coal, only the conventionally used caking coal may be used, but non-caking coal can be used in a high blending ratio. Specifically, for example, caking coal 100 to 40% by weight and non-caking coal 0 to 60% by weight, preferably caking coal 90 to 50% by weight and non-caking coal 10 to 50% by weight, and more preferably Caking coal 70-60% by weight and non-caking coal 3
It is 0 to 40% by weight. It is desirable that the usage rate of non-caking coal is increased economically and from the viewpoint of effective use of resources, but if the usage rate of non-caking coal exceeds 60% by weight, coke obtained. This is because there is a great possibility that the quality such as the strength of will not be sufficient.

The pulverized coal thus finely pulverized and adjusted in particle size is first charged into the dryer 21. This dryer 2
In FIG. 1, an exhaust gas at 300 to 400 ° C. from the coke oven 10 or a heating furnace gas (hereinafter, also simply referred to as exhaust gas) is introduced as a heat medium gas from below, and the pulverized coal charged in the dryer 21 is It is conveyed to this exhaust gas or heating furnace gas and rises, and during this conveyance, it is preheated and dried by the sensible heat of the exhaust gas to have a water content of 1% by weight or less.

The preheated and dried pulverized coal is separated from the exhaust gas by a collecting device (not shown) such as a cyclone, and is carried to the preheater 22 through an appropriate transportation means. The pre-heater 22 has the same air flow heating system as the dryer 21, and as the heat medium gas,
900 generated by mixing air in the hot air stove 23 or exhaust gas from the coke oven 10 with fuel such as kerosene
Combustion flue gas or heating furnace gas (hereinafter,
(Also referred to as combustion exhaust gas) is used.

The pulverized coal charged in the preheater 22 is
By coming into contact with the combustion exhaust gas in the pre-heater 22, the coal is further rapidly heated, and the softening start temperature T of the coal is increased.
The temperature immediately before _s , specifically, the temperature t of coal is T _s > t ≧
(T _s −50), more preferably T _s > t ≧ (T _s −4)
0), and more preferably within the temperature range of T _s > t ≧ (T _s −20). When the temperature is equal to or higher than the softening start temperature T _s by the rapid heating, the metaplast that contributes to the caking property of coal has already disappeared when it is charged into the coke oven, and the strength of the obtained coke is not sufficient. On the other hand, the temperature [(T
_{If the} temperature is lower than _s −50) ° C.], the carbonization time may not be sufficiently shortened, and the coke obtained may not have sufficient quality such as homogeneity and strength. The softening start temperature T _s of coal varies depending on the type of coal, but this value can be easily determined based on the results of measurement using a fluidity measuring device according to JIS 8801 Giesler Plastometer, and many Being researched.

However, the heating rate immediately before the softening start temperature of coal, particularly from 300 to 450 ° C. to immediately before the softening start temperature, is 10 ² to 10 ⁶ ° C./min, preferably 10 ² to 10 ⁵ ° C. / Min. That is, if the heating rate of the coal is less than 100 ° C./minute, the improvement of the caking property of the coal and the shortening of the carbonization time will not be sufficient. In this embodiment, the temperature of coal is 30
Heating to 0 ° C. is performed by the dryer 21 and 300 to 45
The heating from 0 ° C. to a temperature immediately before the softening start temperature is performed by the pre-heater 22, and in this case, especially from room temperature to a temperature immediately before the softening start temperature is 10 ⁴ to 10 ^4.
Rapid heating at a heating rate of about ⁵ ° C./minute is more desirable from the standpoint of improving the quality of coke obtained.

Of course, heating up to just before the softening start temperature of coal is carried out by using only one heating device as long as a heating rate of 100 ° C./min or more can be maintained without performing it in two steps as in the present embodiment. It is also possible to perform it or to perform it in multiple stages.

Further, it is desirable that the heating of the coal just before the softening start temperature is carried out in an inert atmosphere. In this embodiment, the oxygen concentration is less than 1% by volume in view of thermal efficiency and economy. More preferably, the combustion exhaust gas from the coke oven or the hot-blast stove, which is about 0.5% by volume, is used, but it is also possible to use nitrogen or the like heated using a heat exchanger or the like. Further, as the heating device, not only an air flow contact type device but also a fluidized bed type heating device or the like can be used.

Next, the pulverized coal heated to a temperature just before the softening start temperature by the pre-heater 22 is separated from the heat medium gas by a collecting device (not shown) such as a cyclone, and is molded through an appropriate transportation means. It is conveyed to the machine 24 and hot-formed and agglomerated while maintaining its temperature state. A roll molding machine is used as the molding machine 24, but other types such as a stamp molding machine may be used.
The molding pressure, 0.1~1000kg / cm ^2, preferably 10~1000kg / cm ^2. Such agglomeration is expected to improve handling properties in the subsequent transportation process and the like, improve environmental problems due to scattering of pulverized coal into the atmosphere, and improve coke quality. In this embodiment, the hot forming is performed after heating to a temperature just before the softening start temperature in this way, but in the present invention, such a hot forming step can be omitted, and the handling is performed. Although it is inferior in terms of environmental performance and environmental friendliness, it is possible to produce coke of approximately the same quality by such a process that omits hot forming, and also in terms of economical efficiency such as energy consumption and capital investment. Of course, it is advantageous. In addition to the embodiment of this example, in the present invention, rapid heating is performed by using another molding method, for example, the consolidation molding method disclosed in Japanese Patent Application No. 5-267592 by the applicant. The coal may be compacted using a molding machine 24 such as a briquette molding roll or a roll type press at a pressure of 10 kg / cm ² or more while maintaining the temperature range immediately before the softening start temperature.

The coal (agglomerated coal) heated to a temperature immediately before the softening start temperature and hot-formed is extruded from the molding machine 24 and then the carbonaceous material is added to the surface of the agglomerated coal. Is coated. That is, the carbonaceous material is coated with agglomerated coal to form a carbonaceous material layer, thereby preventing direct contact between the agglomerated carbon particles in a semi-molten state that are easily fused with each other, and Has a function of preventing the hopper 11 which is a transport path and a storage device from being attached to the inner wall surface of the device and hanging from a shelf due to a clustering phenomenon.

Therefore, the carbonaceous material added here is not limited as long as it is a carbonaceous material which acts as a spacer between the agglomerated coal particles in the semi-molten state and does not deteriorate even if it is subjected to the thermal history due to the subsequent dry distillation. Although it may be a coating material of No. 2, it is preferable to use CDQ coke powder, which is self-generated coke powder, or collected coke dust collection powder. In particular, the secondary dust catcher collected powder of DQ coke powder has already volatilized the molten component, does not melt even when it is heated again, and has a fine particle size, and is used as blast furnace coke. Even in this case, since it is a carbon material, there is no concern that it will be affected by impurities.

The method of adding the carbonaceous material is not particularly limited, and a conventionally known method can be applied. For example, the outer periphery of the agglomerated coal extruded from the molding machine 24. For example, a method may be used in which a carbonaceous material is blown out from the outer side to the inner side in the radial direction by airflow transportation and the agglomerated carbon surface is sprayed with the carbonaceous material to coat the surface. An inert gas is desirable as the gas used for air flow conveyance. In addition to the above method, the agglomerated carbon extruded from the molding machine 24 is directly received by a stirrer, and the carbonaceous material is added into the stirrer to disintegrate the agglomerated carbon particles formed by the hot forming or the like. Alternatively, a method may be used in which the surface of the agglomerated carbon particles is coated with the carbonaceous material by stirring with a weak stirring force that does not cause re-decomposition. In such a method, the latter method is preferable if possible because it is necessary to coat the entire surface of the agglomerated coal with a carbon material to prevent contact between the agglomerated coal particles.

The amount of the carbonaceous material added varies depending on the semi-molten state of the target agglomerated coal, the hot compaction pressure or the compaction compaction pressure, etc. It is 5 to 4 parts by weight, preferably 1 to 3 parts by weight. If the amount added is less than 0.5 parts by weight, the coating will be insufficient, and the clustering cannot be completely avoided. If it exceeds 4 parts by weight,
Not only is it not possible to expect a further effect commensurate with the amount added, but excessive carbonaceous material may reduce the strength of the coke produced, which is not preferable.

The temperature at the time of adding the carbonaceous material is not particularly limited, but from the viewpoint of maintaining the temperature range immediately before the softening start temperature, the temperature is preliminarily heated to the same level as that of the agglomerated coal. Is desirable.

Thereafter, the agglomerated coal coated with the carbonaceous material is supplied to the hopper 11 provided at the charging port 13 opened at the upper part of the carbonization chamber 12 of the coke oven 10 through the transfer path. The transport path from the dryer 21 to the hopper 11, that is, the path from the rapid heating of the coal to the hot forming and charging into the carbonization chamber of the coke oven (including the path for adding the carbonaceous material) is closed. It is desirable that the system is a system, and it is preferable that the closed system has an adiabatic or heat-retaining structure so that an inert gas is circulated and the predetermined temperature of the coal to be conveyed is maintained. By making such a closed system, coal spontaneously ignites in contact with an oxidizing gas such as air, and the generated dust, NO _x , SO _x, etc. are released into the atmosphere, and by rapid heating. It is possible to effectively prevent the active component in the generated coal from reacting with the oxidizing gas to deteriorate the quality of coke obtained as a result.

The coal which has been heated to a temperature just before the softening start temperature and hot-formed and coated with the carbonaceous material is transferred from the hopper 11 to the carbonization chamber 12 at a predetermined time interval, that is, in the carbonization in the coke oven 10 as will be described later. A predetermined amount is charged in each cycle. As described above, in the agglomerated coal heated to the temperature immediately before the softening start temperature, the caking component (metaplast) in the agglomerated coal reacts with time to coke into the coking chamber 12 After being heated for a long time before being charged, for example, for one hour or more, there is a great possibility that the strength of the coke obtained will be significantly reduced.
It is desired to charge the carbonization chamber 10 within time, more preferably within 20 minutes.

In the coke oven 10, air and poor gas or rich gas (not preheated) preheated in the refractory brick heat storage chamber 14 below the carbonization chamber 12 rises to the upper portion and is burned in the combustion chamber 15. . The carbonization chambers 12 and the combustion chambers 15 are mainly arranged with silica bricks, and in places where the temperature changes drastically are divided by fire-resistant wall surfaces such as chamotte bricks, and are alternately arranged. The combustion heat of the combustion chambers 15 is applied to the wall surfaces. Through to the coal in the carbonization chamber 12. Since the coal charged into the carbonization chamber 12 has already been uniformly heated to a temperature immediately before the softening start temperature, specifically, a temperature of, for example, about 300 to 450 ° C., in the subsequent carbonization in the carbonization chamber 12. It can be heated almost uniformly without causing a large temperature difference between the vicinity of the furnace wall and the center of the furnace. The dry distillation in the carbonization chamber 12 is continued until the temperature of the coal reaches a predetermined temperature in the range of 600 to 900 ° C, more preferably 700 to 800 ° C, and when it reaches the predetermined temperature, it is kiln-fired. If the temperature of the coal is less than 600 ° C in the kiln, the strength of the coked agglomerate is not sufficient, and the problem of pulverization in the transportation process to the subsequent reformer occurs, while the temperature of the coal is 900 ° C. Heating in a coke oven until the temperature exceeds the range is not preferable because the dry distillation time is prolonged and the energy used is increased. The dry distillation time of coal in the coke oven 10 depends on the shape of the carbonization chamber 12, the flue temperature, etc., but is about 5 to 7 hours in a coke oven having a furnace width of 450 mm.

After that, the furnace lids on both sides of the carbonization chamber 13 are opened,
The produced dry distillation coke is extruded by the extrusion ram 17 installed in the extruder 16. The extruded coke is loaded into the coke bucket 19 and then guided to the coke reforming device 20 by a train (not shown). In addition, it is desirable that the coke is discharged from the kiln and conveyed to the coke reforming apparatus 20 in a closed system from the viewpoint of improving the environmental performance.

60 loaded in the coke reformer 20
The low-temperature carbonization coke at a temperature of 0 to 900 ° C., more preferably 700 to 800 ° C. is an oxidizing gas such as air or oxygen introduced from the outside in the pre-chamber 25 in the upper part of the coke reforming apparatus 20. The coke at least 9 times by burning the residual volatiles of the coke,
It is heated to 00 ° C, preferably to about 1000 ° C.
Since this heating is performed directly by partial combustion of the coke, there is no difference in temperature within the coke mass, and uniform heating is performed and quality is homogenized. Partial combustion by contact of such carbonization coke with oxidizing gas, for example,
In a short time of 5 to 10 minutes, the coke can be brought to the final dry distillation temperature of about 1000 ° C. in the conventional method.

Further, the partial combustion gas generated in this step is recovered and is effectively utilized as a fuel for a power generation boiler or the like.

The coke heated to at least 900 ° C. by partial combustion in the pre-chamber 25 immediately moves to the cooling chamber 26 in the lower stage of the coke reforming apparatus 20, and the nitrogen flowing in the cooling chamber 26 is passed through. After being cooled to 200 ° C. or lower by an inert gas, it is taken out of the system. The gas used to cool the coke is circulated through the steps of capturing and separating soot and combustible components, recovering heat by exchanging heat with boiler water of the power generation boiler, etc., as in the case of conventional CDQ. used.

Incidentally, in this embodiment, the heating by the partial combustion of the carbonization coke discharged from the coke oven is carried out in the conventional coke reforming apparatus having an improved CDQ. The aspect is not particularly limited as long as it can be heated to at least 900 ° C. by combustion. For example, in addition to this, it is also possible to improve the coke bucket and provide an oxidizing gas introduction mechanism in the coke bucket to partially burn the coke in the coke bucket.

[0044]

EXAMPLE FIG. 1 shows an apparatus for producing blast furnace coke using the method for transporting rapidly heated agglomerated coal of the present invention.

Coal having 30% non-caking coal and 70% caking coal is pulverized coal having a size of 3 mm or less, and the pulverized coal is dried by a dryer 21 and heated by a preheater 22 at a heating rate of 10 ⁴ ° C / min. Three
After rapidly heating to 70 ° C., 1.0 kg / cm ² , 39 with a briquette forming roll forming machine 24 which is a hot forming machine.
Molded at 0 ° C. After this, the generated coke powder, CDQ
The carbonaceous material consisting of the secondary dust catcher collected powder of 2 is blown to the briquette-shaped agglomerated coal surface extruded from the molding machine by air transport of 2 parts by weight to 100 parts by weight of agglomerated coal,
The surface was coated. Then, the agglomerated coal coated with the carbonaceous material is conveyed to the hopper 11, and is charged into the carbonization chamber 12. As a result, adhesion of the agglomerated coal to the conveying path to the hopper and the wall surface of the hopper 11 or hanging is not caused. It was

[0046]

According to the present invention, it is possible to prevent agglomerated coal in a semi-molten state after the agglomeration process from adhering and hanging in a storage device (hopper), and to achieve stable continuous operation.

Further, since the carbonaceous material plays an excellent role as a spacer in coking, the coke particle size can be adjusted to a uniform distribution, and the quality of coke can be stabilized.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing the configuration of an example of a blast furnace coke manufacturing apparatus using the method for transporting rapidly heated agglomerated coal according to the present invention.

FIG. 2 is a diagram schematically showing a configuration of an example of an apparatus used in a conventional method for producing blast furnace coke.

[Explanation of symbols]

10 ... Coke oven, 11 ... Hopper, 12 ... Carbonization chamber, 13 ... Charging port, 14 ... Heat storage chamber, 15 ... Combustion chamber, 16 ... Extruder, 17 ... Extrusion ram, 19 ... Coke bucket, 20 ... Coke reforming device , 21 ... dryer,
22 ... Preheater, 23 ... Hot air stove,
24 ... Molding machine, 25 ... Pre-chamber,
26 ... Cooling chamber, 50 ... Coke oven,
51 ... Charging vehicle, 52 ... Carbonization chamber,
53 ... charging port, 54 ... heat storage chamber,
55 ... Combustion chamber, 56 ... Extruder,
57 ... Extrusion ram, 58 ... Coke guide car, 59 ... Coke bucket, 60 ... Coke dry fire extinguisher (CDQ).

Claims (2)

[Claims] 1. A method of agglomerating coal by rapidly heating coal to a softening and melting temperature range of coal and performing hot forming or compaction forming, adding carbonaceous material to agglomerated coal after agglomeration of coal. A method of transporting rapidly heated agglomerated coal, characterized by: 2. The method for conveying rapidly heated agglomerated coal according to claim 1, wherein the carbonaceous material to be added is coke powder produced.