JPH07145383A - Method for producing coke and apparatus therefor - Google Patents

Abstract

PURPOSE:To reduce the variation in the quality of coke by charging a semicoke contg. remaining volatiles under circling into a prechamber of a dry quenching apparatus to increase the proportion of large particles near the center of the prechamber. CONSTITUTION:A coal charge is carbonized in a chamber oven to give a semicoke contg. 1-5% remaining volatiles derived from the coal charge. After pushed out of the oven at 600-900 deg.C, the semicoke is charged under circling into a prechamber 10 of a dry quenching apparatus through a circling and charging apparatus 13 and a circling shoot 12, increasing the proportion of large particles near the center of the prechamber 10. Simultaneously, air is supplied under circling through an air supply apparatus 28, a duct 27, and the shoot 12 to the entire surface of the semicoke layer 30 to form a burning zone 31, burning a combustible gas comprising the remaining volatiles to heat and burn the semicoke uniformly in the radial and circumferential directions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry-type fire extinguishing facility (hereinafter referred to as a dry-type fire extinguishing facility) in which a charged coal is dry-distilled at a low temperature in a room-type coke oven to form a semi-finished coke and kiln is discharged. , This is referred to as CDQ), and is heated and fired to produce a coke to be a product, and its production equipment.
In other words, the semi-coke produced by low-temperature carbonization in a room-type coke oven and kiln is turned into a product by using CDQ, which has the function of extinguishing the coke that is originally the product. It is intended to provide a method for manufacturing coke and a manufacturing facility therefor.

The semi-coke is a dry coke in a carbonization chamber of a chamber type coke oven at 600 to 900 ° C. and has 1 to 5% of residual volatile matter (VM) derived from charging coal. The coke in the middle of carbonization. Here, the kiln discharge temperature is the average temperature of the core temperature in the coal measured at a height of 1/2 of the carbonization chamber immediately below the charging hole. The coke means a blast furnace coke, a casting coke, a non-ferrous metal refining coke, and a coke for other purposes.
However, in the following description, for the sake of convenience, the blast furnace
The table will be described as an example.

[0003]

2. Description of the Related Art Coke for a blast furnace is generally manufactured in the operation of a room-type coke furnace, and in the integrated iron and steel making plant, blown hot metal is usually manufactured by the blast furnace method. Is. However, in order to reduce the manufacturing cost, etc., we have recently heard of a move to replace the electric furnace method. However, since the blast furnace method is still advantageous in terms of production volume and quality, it is surmised that the blast furnace method will never be replaced at once.

Therefore, the coke charged into the blast furnace must be manufactured by the room type coke furnace in the future. In most cases, the life of the coke oven is extended, while maintaining or improving the coke quality and manufacturing cost. Is also one of the common technical problems among those skilled in the art. Also, from the viewpoint of the improvement of global warming that has been reported recently, if the carbonization temperature of the charging coal in the coke oven can be lowered, an immeasurable effect of suppressing global warming can be expected. It can be said that the mission of those skilled in the art is to modify the box manufacturing method.

The applicant of the present invention, who is aware of the deceptive problem as early as possible, has already proposed Japanese Patent Application No. 13138/1989 "Method for manufacturing coke for blast furnace". This is a coke which is manufactured by dry distillation at 800 to 900 ° C. in a room-type coke oven to take out a kiln, and charging the coke into a CDQ, heating and firing the product. Is manufactured. Therefore, the kiln temperature is low, and the time required for carbonization is shorter than that of the conventional coke manufacturing method using a room-type coke oven. After all, it is expected that the operation of the room-type coke oven can be reduced and the life of the oven can be extended accordingly. In addition, not only the manufacturing cost can be expected to be improved, but also many other effects can be expected.

[0006] In the method of producing coke, including the prior art examples, in which the coke is produced by dry distillation at a low temperature in a coke oven in a coke oven, kiln-loading, charging into CDQ, heating and firing. The variation in the progress of dry distillation of the charged coal in the coking furnace carbonization chamber determines the success or failure on an industrial scale. This is because firing at a low temperature cannot be performed at a low temperature unless the kiln is strong enough to withstand the extrusion action of the extruder.

The inventors of the present invention separately propose an invention which solves the variation in the progress of the carbonization of the charging coal in the deceptive carbonization chamber.
As one of the other success / failure requirements, there are heating and firing conditions in CDQ in which a semi-coke is charged, and CDQ equipment conditions. That is, in CDQ, heating and firing are performed to turn a semi-coke into a product coke. Whether or not it can be carried out without variation depends on whether or not it can be carried out on an industrial scale.

The main function of the CDQ used so far is a function of extinguishing a so-called coke in a dry state.
There was nothing to describe or disclose the heating and firing conditions for turning the cake into a product coke. Further, since many CDQs introduce air for the purpose of increasing vapor recovery, a semi-coke having a residual volatile content of 1 to 5% due to low temperature carbonization and kiln removal according to the present invention. There is no mention of the proper conditions for heating and firing to make product coke. In other words, there are no known examples of heating and firing conditions in the CDQ prechamber that satisfy coke quality.

In view of the deceptive situation, the present inventors have decided to use a room-type
As a pioneer who develops product coke by a combination of a furnace and CDQ, we are trying to develop a method that can be proposed as a next-generation coke manufacturing technology. It was proposed here because it was possible to develop manufacturing conditions on an industrial scale to meet the quality of the product coke. The technical problems of the present invention are listed below.

[0010]

Technical problem of the present invention: Heating and firing of semi-finished coke charged in CDQ are carried out on an industrial scale without variations, and the quality of the product coke can be satisfied. It is possible to reduce the variation in coke quality by making the quality improvement effect of coke constant by making the maximum temperature reached from the semi-finished coke into a product coke into a product and the heating rate uniform. The present invention is the subject of the invention to produce a product coke on a deceptive CDQ. Therefore, the radial temperature gradient of the pre-chamber, which affects the coke quality on an industrial scale, the particle size distribution of the semi-coke layer, the residual volatiles derived from the charging coal brought into the semi-coke ( (VM) tries to provide optimum manufacturing conditions with respect to the air supply state that influences the combustion of combustible gas that is the main raw material coal. Based on the above, it is possible to mainly burn combustible gas to minimize the burning of the coke itself. Based on the above, it is possible to suppress the temperature variation in the radial direction and in the circumferential direction of the surface of the semi-formed coke layer in the prechamber. Based on the above, it is possible to optimize the rise of coke sensible heat and increase the amount of steam generated in the steam recovery facility. The semi-finished coke, which is carbonized at low temperature and kilned at low temperature,
CD with a residual volatile content (VM) of 1 to 5% after kiln removal
Being able to exert a physical function as a main heat source for heating and firing for coking in Q. The time required for carbonization in a room-type coke oven can be shortened. The coke quality should be able to contribute to stabilization of blast furnace operation by maintaining at least the same physical properties as coke production by dry distillation of only a room type coke oven. <Maru 10> Be able to make the degree of coke mass suitable for the purpose of use. (Maru 11) By shortening the time required for carbonization, the life of the furnace body can be extended. <Maru 12> Manufacturing cost can be reduced by shortening the time required for carbonization. ▲ Maru 13 ▼ To reduce the furnace maintenance work and shorten the maintenance cost by shortening the time required for carbonization.

The present invention addresses the technical problem of deception by
It is characterized by the following means.

[First feature] Product is prepared by dry-distilling the charged coal in a room-type coke oven to form a semi-coke and firing it out, and then charging the semi-coke into a dry fire extinguishing facility, heating and firing. In producing a coke which is to be prepared as follows: a) carbonization of the charged coal is carried out to obtain a semi-finished coke in a state having residual volatile matter (VM) derived from the charged coal.
After the kiln was kilned out at the low temperature, it was swirled into the pre-chamber of the dry fire extinguisher to increase the particle size distribution of the large lumps near the center. B) And while swirling the air, the surface of the semi-coke layer And burning the combustible gas using the residual volatile matter (VM) derived from the charging coal of the semi-coke as a raw material to uniformly raise the temperature in the radial direction and the circumferential direction and perform calcination. A method for producing a coke, which is characterized in that

[Second feature] Dry coal in a room-type coke oven is converted into a semi-finished coke by firing, and the semi-finished coke is placed in a dry fire extinguishing facility, heated and fired to produce a product. In a dry fire extinguishing equipment for producing coke, the swivel charging device is provided at the top of the pre-chamber of the dry fire extinguishing equipment, and the swivel charging device is provided at the top of the pre-chamber. A discharge pipe for mounting the gas is provided, and one of the hoses is provided in the conduit, and the conduit is provided with a valve having a valve through a rotary bearing, and the conduit is connected to an air supply device. A unique coke manufacturing facility.

[Claim 3] The coke according to claim 2, characterized in that at least one of a swirl shoe, a swivel charging device, and a valve is electrically connected to a comparative operation control device. production equipment.

Next, the reasons for limiting the essential constituent features that characterize the present invention will be described.

[Charge coal was subjected to dry distillation at a low temperature to obtain a semi-coke having a residual volatile component (VM) derived from the charge coal, and the semi-coke was kiln at the low temperature. Reasons for charging the pre-chamber of a dry fire extinguishing facility later: One of the technical problems of the present invention is to prolong the life of the coke oven, to carry out carbonization in a short time, and the like as described above. . Therefore, from this point as well, it is an essential condition to carry out dry distillation of the charged coal at a low temperature and to remove it from the kiln. Further, in the present invention, obtaining a coke as a product by CDQ is also a major technical problem. Therefore, dry distillation and kiln removal in a room-type coke oven are carried out at a low temperature to convert the charging coal into a semi-coke to make it have residual volatile components derived from the charging coal. It must be used as the main source of combustible gas when heating and firing the semi-coke. Therefore, the deceptive combustible gas source is a combustible gas that does not hinder the quality of coking during heating and firing, so it is an essential condition.

In this case, it is desirable that the amount of residual volatile matter (VM) derived from charged coal in the semi-coke is 1 to 5%. Because this residual volatile matter (VM)
This is because after being charged into the CDQ pre-chamber, the semi-finished coke is burned with the air supplied as the combustible gas raw material to produce the product coke.

Further, in the present invention, dry distillation is carried out at a low temperature as described above, and kiln is discharged, but the temperature at this time is 600 to 900 ° C. That is, the main fuel for coking the semi-coke in the CDQ prechamber is residual volatile matter (VM) derived from the charging coal brought in by the semi-coke.
Therefore, you must bring only the required amount to the heat source. The required amount is 1 to 5%, and the amount is half
The distillation temperature is 600 to 900 ° C., which is left in the cast and satisfies the extrusion strength that enables the kiln to be discharged at a low temperature.

[0015]

[Dry distillation of the charged coal at a low temperature, and the semi-coke having residual volatile matter (VM) derived from the charged coal was kilned out at that low temperature, and then swirled to the pre-chamber of the dry fire extinguishing equipment. Regarding the reason for increasing the particle size distribution of large lumps near the center by charging: One of the features of the present invention is that the charged coal is carbonized at a low temperature and has residual volatile matter (VM) derived from the charged coal. It has already been mentioned that the semi-coke in the state may be used and the residual volatile matter (VM) may be used as a raw material for heating and combustion for coking. Further, other technical problems are as described above. Therefore, even if the temperature distribution and temperature rise variation of the coke layer are observed, it is not possible to increase the large particle size distribution (viewed from the plane or the longitudinal section) near the center of the charged semi-coke layer. The generation of a temperature gradient in the radial direction of the chamber or in the radial direction of the semi-coke (coke) layer is suppressed, and a uniform temperature rising condition is maintained,
Since the coke quality is further improved and the quality variation of the coke to be the product is reduced, the operating conditions are limited. Besides, in order to suppress the generation of the temperature gradient in the radial direction,
For example, the reason is that the coke layer can be smoothly dropped and high productivity can be achieved, the sensible heat of gas can be stabilized, the vapor recovery efficiency can be improved, and sound operation on an industrial scale can be carried out. .

[0016]

[Air is supplied to the surface of the semi-coke layer while swirling, and a flammable gas using the residual volatile matter (VM) derived from the charging coal of the semi-coke as a raw material is combusted in the radial direction. And the reason for uniformly heating and firing in the circumferential direction] In order to achieve the technical object of the present invention, air is uniformly distributed over the entire surface of the semi-formed coke layer in the pre-chamber. It is essential to burn the combustible gas using the residual volatile matter (VM) derived from the charging coal brought into the semi-coke as a raw material. Further, by mainly burning this combustible gas, unnecessary loss of coke is suppressed, which also improves the yield of product coke, so the condition is limited.

[0017]

[A swirl charging device that provides a swivel shoe that can be tilted up and down on the top of the pre-chamber of dry fire extinguishing equipment] The turning shoe
Equipped with a discharge pipe for mounting a flexible heat-resistant hose
The reason why one of the hoses is provided in a conduit, and the conduit is provided with a valve having a valve through a rotary bearing, and the conduit is connected to an air supply device; low temperature dry distillation in a chamber coke oven It goes without saying that charging the semi-finished coke discharged from the kiln to the prechamber of the CDQ is one of the essential conditions of the present invention. At the time of this charging, in order to increase the particle size distribution of large lumps near the center of the prechamber, which is an essential constituent feature of the first feature of the present invention, or a semi-finished coke which has been charged ( For charging so as to increase the large particle size distribution near the center of the coke) layer, swirl charging is simple and reliable on an industrial scale. Therefore, the constituent requirements are limited as an essential condition as a means for carrying out the turning charging. Furthermore, the supplied air is supplied to the semi-finished
This is limited in order to uniformly supply the whole area of the coke layer (coke) layer to suppress the abnormal occurrence of the temperature gradient in the radial direction of the coke layer, promote uniform heating and firing, and reduce the variation in temperature distribution. To do.

[0018]

[Regarding the reason why at least one of the swirl shoe, the swirl charging device, and the valve is electrically connected to the comparative calculation control device] The present invention is, for example, just in time for blast furnace operation, and the blast furnace co- It provides a production system on an industrial scale that supplies casks. Further, the present invention is intended to achieve the above-mentioned technical problems. Therefore, when air is supplied, the prechamber conditions, semi-coke layer conditions, swirl swirl swirl conditions, air supply flow rate, flow velocity, etc. are maintained at optimal conditions. This condition is limited because automatic control is essential so that it can be performed.

The deceptive heating and firing method of the present invention is about 4
Since it is possible to raise the temperature at 0 ° C / min or more to 1000 ° C or more and to satisfy the coke quality, it is recommended to add deceptive temperature raising conditions to the above-mentioned limited conditions as more preferable operating conditions. it can. The present invention will be described below based on an embodiment shown in the drawings.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic explanatory view of a manufacturing facility for carrying out the present invention as seen from a plane. A room type coke oven 1 includes, for example, an extruder 2, a coal car 3 and a semi-finished coke receiving unit. Car 4,
Semi-coke charging equipment 5, CDQ 6, steam recovery equipment 7,
Consists of coke export facility 8 and the like. The CDQ 6 and the steam recovery facility 7 are connected to a closed circulation path 9 so that the steam can be supplied from the CDQ 6 and the used steam from the steam recovery facility 7 can be sent to the CDQ.

In the production of the coke according to the present invention, the dry distillation in the room type coke oven 1 is carried out at a low temperature of 600 to 900 ° C., and the charging coal is converted into a semi-coke (that is, residual coke). Volatile (V
Moke is a coke having 1 to 5%. ), And the semi-coke was kilned out in the low temperature range and charged into the pre-chamber-10 of the CDQ 6 by the semi-coke charging equipment 5, and the semi-coke brought in remained. Volatile matter (VM) 1
The semi-coke is heated by co-firing with 5% air to be calcined. This baking is about 40
The coke quality and the like are good because the temperature is raised to 1000 ° C. or higher at a heating rate of ≧ ° C./min.

FIG. 2 is an explanatory view showing a magnified longitudinal section of the vicinity of the pre-chamber 10 of the CDQ 6 shown in FIG. A swivel charging device 13 having a swivel shoe 12 on the top 11.
Is provided. The charging device 13 has a gear 16 on the outer periphery of a hollow revolving cylinder 15 having a double opening / closing port (double opening / closing bell) 14 for guiding a semi-coke, as shown in a partially cutaway vertical cross section in FIG. The gear 16 is provided on the turning drive device 17 so as to be turnable with the gear 19 via the shaft 18.

The turning shoe 12 is provided with a tilt angle control gear mechanism 20 near the lower outer periphery of the hollow turning cylinder 15 and a tilt angle control device 22 via a hollow shaft 21. 23 is a flexible heat-resistant hose, one end of which is a swivel shoe 12
Is fitted to the discharge pipe 24 attached to the
7 is provided in a conduit 27 having a valve 26 via a rotary shaft bearing 25, and is connected to an air supply device 28.

The coke manufacturing equipment according to the present invention having a deceptive structure operates as follows. The semi-finished coke from the chamber type coke oven 1 is loaded into the pre-chamber 10 of the CDQ 6 from the swivel loading device 13 in the semi-finished coke charging equipment 5. That is, since the turning charging device 13 is configured as described above, first, the turning charging device 13 is sequentially charged into the hollow turning cylinder 15. The cylinder 15 has the function of the swing drive device 17 to move the shaft 18 → gear 19 → gear 1
6 is transmitted in order and turns, and the double opening / closing port (double opening / closing bell) 14 is alternately opened / closed to cut out to the turning shoe 12 while maintaining airtightness. The swivel shoe 12 swivels together with the hollow swirl cylinder 15 while pre-chambering the CDQ 6
Charge into.

In this case, since the shunt 12 is also capable of being lifted up and down, the center of the surface of the semi-formed coke (coke) layer which has already been charged by the operation of controlling the angle and / or the turning operation. A semi-coke having a large grain size can be charged in the vicinity, and a semi-coke having a small grain size can be charged toward the inner circumferential direction of the prechamber 10.

In this case, the elevation angle of the shoe 12 is
The operation of the elevation angle control device 22 is transmitted to the elevation angle control gear mechanism 20 through the hollow shaft 21 to be operated, and the desired elevation angle of the turning shoe 12 is selected and held until the next operation. .

Further, since the swirl shoe 12 is provided with the discharge pipe 24, the air from the air supply device 28 can be used together with the charging of the semi-coke. This air supply action flows in the order of the air supply device 28, the conduit 27, the rotary shaft bearing 25, and the discharge pipe 24, and discharges while swirling over the entire surface of the semi-coke layer that has already been charged. (Supply) can. In this case, the flow velocity, flow rate, etc. of the supplied air are properly controlled by controlling the valve 26 and the like.

In FIG. 2, 29 is a level meter, 30 is a semi-coke layer and a heated zone, 31 is a combustion zone, and ○ is a semi-coke.
Shows the size of the particle size of.

FIG. 4 is a block diagram showing an automatic control system.
A control system in the configuration of the present invention shown in FIGS. 2 and 3 is shown. Swiveling drive device 17, tilt-angle control device 22, valve 2
6, the level meter 29, and other control-requiring components are electrically connected to the comparison operation control device 32. Therefore, for example, the information of the level meter 29 is electrically compared to the comparison operation control device 3
2 is input to 2 for comparison calculation with a reference value, and for example, a turning drive device 17, a tilt angle control device 2 so as to exhibit an appropriate level.
It is electrically output to 2 and is controlled appropriately. If it is necessary to control the flow rate and flow velocity of the supply air, the air is electrically output to the valve 26 for proper control.

In the present invention, for example, the semi-coke can be charged so that a large grain size is gathered in the vicinity of the center, as shown by the size of circle in FIG. Proper air can be supplied to the whole area of the semi-coke layer (cokes) 30 while turning from 24 and / or controlling the elevation angle. Therefore, the layer and the heated area 3
It is possible to form an ideal combustion zone 31 in terms of physical properties at 0, and to produce a product coke from the semi-coke layer 30.

The physical phenomenon at this time is that the radiant heat transfer from the flame and the convective heat transfer from the combustion gas act to accelerate the temperature rise in the vicinity of the center where the grain size is large.
I think that the temperature rise will be the same as that in the inner circumferential direction of 0, and eventually the variation in coke quality will be reduced. The deceptive proper physical phenomenon is that the combustible gas whose main raw material is the residual volatile matter (VM) derived from the charging coal brought in by the semi-finished coke is burned together with the supplied air. Unnecessary loss of coke is also suppressed.

Appropriately proper heating and combustion function to convert the semi-finished coke into a product, and the heated gas reaches the steam recovery facility 7 through the closed circulation path 9. , Contribute to improve the efficiency of vapor recovery.

[0033]

EXAMPLES The deceptive invention is further superior by the following comparative tests. This test was conducted using a room-type coke oven 1 which is a production facility. As the chamber type coke oven 1, one having a furnace height of 5150 mm, a furnace width of 450 mm and a furnace length of 14800 mm was used. The operating conditions of the room-type coke oven 1 are set based on the invention that the inventors propose separately to reduce the variation of carbonization. In addition, as a comparative example, those charged under the same conditions are out of the operating conditions of the present invention. Tried in the state.

As a result, under the conditions of the present invention, the kiln removal of the semi-finished coke could be stably carried out on an industrial scale. On the other hand, in the comparative example, the temperature at which the semi-cooked coke was taken out fluctuated, so that an extrusion trouble occurred at a core temperature of 600 ° C. in the charcoal, and at 800 ° C. extrusion was possible but unstable. However, dust and smoke were observed from the furnace lid, and implementation on an industrial scale was impossible.

Residual volatiles (V
M) is as follows.

The semi-finished coke fired as described above is
It was charged in a pre-chamber of CDQ6 and air was supplied to heat and sinter to make a semi-coke. The operating conditions are shown in Table 1. P / C in the table means a pre-chamber. Here, Comparative Example 1 is a case where the coke produced by the method of the above-mentioned Comparative Example was treated with CDQ under normal operating conditions, and Comparative Example 2 was a semi-coke produced by the present invention produced by ordinary CDQ. This is the case when firing is performed in equipment.

As a result of the coking of the semi-finished coke with the above CDQ6, the coke having the following quality could be produced.
The results are shown in Table 2. (Hereafter this page margin)

[0038]

[Table 1]

[0039]

[Table 2]

FIG. 5 shows temperature distributions in the prechambers of the present invention and the comparative example. This comparative example is the turning charging of the present invention,
This is a system (comparative example 2) in which the air supply port directed to the inside of the top space and the air supply device are connected by a conduit without providing the structure of FIG. As shown in FIG. 5, the method according to the present invention (that is, the method according to the configuration of FIG. 2) is
It can be seen that the temperature distribution is substantially uniform without being influenced by the level change of the semi-coke layer.

[0041]

Since the present invention is configured and operates as described above, as will be enumerated below, there are remarkable effects that cannot be obtained by coke production using only a conventional chamber type coke oven. The semi-coke charged in the CDQ can be heated and fired on an industrial scale without variation, and the quality of the product coke can be satisfied. By making the maximum temperature reached and the rate of temperature rise from the semi-finished coke into the product coke uniform, the coke quality improvement effect can be made constant and the coke quality variation can be reduced. The present invention is the subject of the invention to produce a product coke on a deceptive CDQ. Therefore, the radial temperature gradient of the pre-chamber, which affects the coke quality on an industrial scale, the particle size distribution of the semi-coke layer, the residual volatiles derived from the charging coal brought into the semi-coke ( Optimum manufacturing conditions can be provided with respect to the air supply state and the like that influence the combustion of the flammable gas whose main raw material coal is VM). Based on the above, it is possible to burn the combustible gas mainly and to suppress the burning of the coke itself to the minimum. Based on the above, it is possible to suppress the temperature variation in the radial direction and the circumferential direction of the surface of the semi-formed coke layer in the pre-chamber. Based on the above, the rise of coke sensible heat can be optimized to increase the amount of steam generated in the steam recovery facility. The semi-finished coke, which is carbonized at low temperature and kilned at low temperature,
CD with a residual volatile content (VM) of 1 to 5% after kiln removal
It can exert a physical function as a main heat source for heating and firing for coking in Q. The time required for carbonization in a room coke oven can be shortened. The coke quality can contribute to stabilization of blast furnace operation by maintaining at least the same physical properties as coke production by dry distillation of only a room type coke oven. (10) Roundness The degree of coke lumps can be adjusted to a size suitable for the intended use. (11) By shortening the time required for carbonization, the life of the furnace body can be extended. <Maru 12> By reducing the time required for carbonization, the manufacturing cost can be reduced. (Maru 13) By shortening the time required for carbonization, the maintenance work of the furnace body can be reduced and the maintenance cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of equipment for producing coke in a combined process of a room-type coke oven and a CDQ according to the present invention.

FIG. 2 is an explanatory view showing an enlarged main section of the CDQ shown in FIG. 1 in a sectional view.

FIG. 3 is an enlarged explanatory view of a main part of the turning charging device of FIG.

FIG. 4 is a block diagram showing a control system of the main constituent elements of the present invention shown in FIGS. 2 and 3.

FIG. 5 is a graph showing a temperature distribution in a CDQ prechamber of the present invention and a comparative example.

[Explanation of symbols]

 1-chamber coke oven 2 extruder 3 coal car 4 semi-coke receiving vehicle 5 semi-coke charging equipment 6 CDQ 7 steam recovery equipment 8 coke unloading equipment 9 closed circulation path 10 pre-chamber 11 Top Space 12 Swing Shoot 13 Swing Charging Device 14 Double Opening / Closing Port (Double Opening / Closing Bell) 15 Hollow Swivel Cylinder 16 Gear 17 Swiveling Drive 18 Shaft 19 Gear 20 Prismatic Angle Control Gear Mechanism 21 Hollow Shaft 22 Pile angle control device 23 Flexible heat-resistant hose 24 Discharge pipe 25 Rotating shaft bearing 26 Valve 27 Pipe 28 Air supply device 29 Level meter 30 Semi-coke layer and heated zone 31 Combustion zone 32 Comparison Arithmetic control device

Claims (3)

[Claims] 1. A product obtained by dry-distilling charged coal in a room-type coke oven to form a semi-finished coke and firing it out, and charging the semi-finished coke into a dry fire extinguishing facility, heating and firing. In producing a coke which is to be prepared as follows: a) carbonization of the charged coal is carried out to obtain a semi-finished coke in a state having residual volatile matter (VM) derived from the charged coal.
After the kiln was kilned out at the low temperature, it was swirled into the pre-chamber of the dry fire extinguisher to increase the particle size distribution of the large lumps near the center. B) And while swirling the air, the surface of the semi-coke layer And burning the combustible gas using the residual volatile matter (VM) derived from the charging coal of the semi-coke as a raw material to uniformly raise the temperature in the radial direction and the circumferential direction and perform calcination. A method for producing a coke, which is characterized in that 2. A product obtained by dry-distilling the charged coal in a room-type coke oven to form a semi-finished coke and firing it out, and charging the semi-finished coke into a dry fire extinguishing facility, heating and firing. In a dry fire extinguishing equipment for producing coke, the swivel charging device is provided at the top of the pre-chamber of the dry fire extinguishing equipment, and the swivel charging device is provided at the top of the pre-chamber. A discharge pipe for mounting the gas is provided, and one of the hoses is provided in the conduit, and the conduit is provided with a valve having a valve through a rotary bearing, and the conduit is connected to an air supply device. A unique coke manufacturing facility. 3. The coke according to claim 2, wherein at least one of the swivel shoe, the swivel charging device, and the valve is electrically connected to the comparative operation control device. production equipment. [0001]