KR20090095468A - Management system for cokes and management method thereof - Google Patents

Abstract

A system and a method for treating cokes are provided to manufacture the cokes in which the reactivity is high by attaching the cokes after fusing with the heat. A system for treating cokes comprises a coke furnace(1), a CDQ facility(2), a powder spraying unit(3) and a blast furnace(4). The CDQ facility comprises a chiller for cooling the cokes carried out. The powder spraying unit spreads an organic powder(6) consisting of the organic compound including the alkaline earth metal in the cokes returned to the blast furnace. The powder spraying unit is set up in the CDQ facility so that the organic pulverized body is under thermal decomposition. The alkaline earth metal comprises the calcium having the catalytic effect in the CO2 reaction of the cokes. The organic compound comprises the calcium stearate, the calcium citrate and calcium oleate.

Description

Coke treatment system and coke treatment method {MANAGEMENT SYSTEM FOR COKES AND MANAGEMENT METHOD THEREOF}

The present invention relates to a coke treatment system and a coke treatment method for treating coke returned from a cokes furnace to a blast furnace.

A technique for improving the reactivity of CO ₂ and coke in a smelting furnace has been proposed by treating various types of coke supplied to the coke or the coke produced by coking the coke. For example, patent document 1-3).

Patent Literature 1 discloses a technique of dissolving and dispersing a catalyst for activating a reaction of coke in water and then attaching the catalyst to the coke by bringing the liquid into contact with the coke. Patent Literature 2 discloses a technique in which a catalyst for activating a reaction of coke is added to coal and carbonized in a cokes furnace. Patent Literature 3 discloses a technique in which coal containing 1 mass% or more of alkaline earth metal and / or transition metal is blended in blended coal by 2 mass% or more and carbonized in cokes.

Patent Document 1. Japanese Unexamined Patent Publication No. 2002-226865

Patent Document 2: Japanese Patent Laid-Open No. 2001-348576

    Patent Document 3: Japanese Unexamined Patent Publication No. 2003-306681

In the same method as Patent Document 1, there is a problem in that the system is complicated because a process for dissolving and dispersing the catalyst in water is required. In addition, there is a possibility that water may remain in the coke, which is not preferable in the operation of the furnace.

In the method similar to the said patent document 2, there existed a possibility that the intensity | strength (DI) of the coke produced in cokes oven may fall by mixing a catalyst with coal. In order to suppress the decrease of the strength (DI) of the coke, it was possible to consider a coal compound that can increase the strength of the coke.

In the same method as that of Patent Document 3, the catalytic effect decreases when the blending ratio is low, depending on the blending ratio of coal containing 1% by mass or more of alkaline earth metal and / or transition metal, and the ash content increases when the blending ratio is high. There was a problem.

An object of the present invention is to provide a coke treatment system and a coke treatment method capable of producing coke with high reactivity with CO ₂ using a simpler configuration to solve the above problems.

The coke treatment system according to the first aspect of the present invention is a coke treatment system for treating coke conveyed from a cokes furnace to a blast furnace, and the coke conveyed from the cokes furnace to the furnace. And spreading the organic powder composed of an organic compound including an alkaline earth metal to melt the organic powder by heat and attach the powder to the coke.

According to such a structure, the organic powder spread | spread with respect to the coke conveyed from a cokes furnace to a blast furnace melts by heat, and adheres to coke. An organic powder composed of an organic compound including an alkaline earth metal may be attached to the coke to improve the reactivity of the CO ₂ and the coke. In particular, since the organic compound is sprayed in a powdered state, unlike the configuration in which the organic compound is dissolved and dispersed in water, coke having high reactivity with CO ₂ can be manufactured in a simpler configuration. In addition, there is no problem in that coke moisture is increased because water is not used.

The coke processing system according to the second aspect of the present invention is characterized in that the organic powder is melted by the heat of the coke conveyed from the cokes furnace to the furnace and adhered to the coke.

According to this structure, since the organic powder can be melted and adhered to the coke by the heat of the coke, it is not necessary to separately provide a heat source for melting the organic powder. Therefore, coke with high reactivity with CO ₂ can be manufactured with a simpler structure.

A coke processing system according to a third aspect of the present invention includes a cooling device for cooling the coke conveyed from the cokes furnace to the coke after the powder spreading device is cooled by the cooling device. And the melting point of the organic powder is lower than the temperature of the coke after being cooled by the cooling device.

According to such a structure, the organic powder spread | spread to the coke after cooling melts by the heat of coke, and adheres to the said coke. As a result, the organic powder can be favorably attached to the coke after cooling, so that the reactivity of CO ₂ and coke can be effectively improved.

A coke processing system according to a fourth aspect of the present invention includes a heating device for heating the organic powder, wherein the organic powder is melted by heating of the heating device and conveyed from the cokes to the furnace. It is characterized in that attached to the coke.

According to such a structure, since organic powder melts and adheres to coke by the heating of a heating apparatus, organic powder can be melt | dissolved favorably by stable heat, and it can adhere to coke well. Therefore, it is possible to effectively increase the reactivity of CO ₂ and coke.

A coke treatment method according to a fifth aspect of the present invention is a coke treatment method for treating coke conveyed from a cokes furnace to a smelter, wherein the coke is alkali supplied to the furnace from the cokes furnace. It is characterized in that it comprises a powder spreading step of spraying the organic powder consisting of an organic compound including a earth metal to melt the organic powder by heat to adhere to the coke.

According to such a structure, the coke processing method which has the same effect as the coke processing system which concerns on said 1st this invention can be provided.

A coke treatment method according to a sixth aspect of the present invention is characterized in that the organic powder is melted by the heat of the coke conveyed from the cokes furnace to the furnace and adhered to the coke.

According to such a structure, the coke processing method which has the same effect as the coke processing system which concerns on said 2nd this invention can be provided.

A coke treatment method according to a seventh aspect of the present invention includes a cooling step for cooling the coke conveyed from the cokes furnace, and in the powder spreading step, the coke after cooling by the cooling step. The organic powder is sprayed, and the melting point of the organic powder is lower than the temperature of the coke after being cooled by the cooling step.

According to such a structure, the coke processing method which has the same effect as the coke processing system which concerns on said 3rd this invention can be provided.

A coke treatment method according to an eighth aspect of the present invention includes a heating step for heating the organic powder, wherein the organic powder is melted by heating of the heating step, and is returned from the cokes furnace to the furnace. It is characterized in that attached to the coke.

According to such a structure, the coke processing method which has the same effect as the coke processing system which concerns on said 4th this invention can be provided.

According to the present invention, organic powder obtained from an organic compound containing an alkaline earth metal can be spread in a powder state, melted by heat, and adhered to coke, so that coke having high reactivity with CO ₂ can be manufactured with a simpler structure.

<1st embodiment>

1 is a block diagram showing an example of a coke processing system according to a first embodiment of the present invention. This coke treatment system is composed of cokes furnace (1), CDQ (dry fire extinguishing equipment) (2), powder spreading apparatus (3) and furnace (4), and the like from cokes furnace (1) to furnace (4). Process coke returned to). That is, various processes are performed by the CDQ (2), the powder spreading apparatus (3), etc. in the process of conveying the coke produced by coal drying into the cokes (1) to the blast furnace (4) through the conveying path (5). Is to be implemented.

The coke carried out from the coke (1) is red coke and is cooled to a predetermined temperature or less by the dry extinguishing process of the CDQ (2). This CDQ 2 is comprised with the cooling apparatus for cooling the coke conveyed from the coke oven 1. It is preferable that the coke temperature after cooling by CDQ2 is 200 degrees C or less, For example, it may be set in the temperature range of 130 degreeC-190 degreeC.

The powder spreading apparatus 3 sprays the organic powder 6 which consists of organic compounds containing an alkaline earth metal with respect to the coke conveyed from the cokes furnace 1 to the blast furnace 4, In this example, CDQ Organic powder 6 is sprayed on the coke after cooling by (2). The powder spreading device 3 preferably sprays the organic powder 6 on the coke immediately after cooling by the CDQ 2. To do this, the powder spreading device 3 is immediately after the CDQ 2 as shown in FIG. 1. The powder spreading device 3 may be installed in the CDQ 2 so that the organic powder 6 does not cause thermal decomposition.

The alkaline earth metal as may be exemplified by calcium (Ca), such as having a catalytic effect on the CO ₂ reaction of the coke in the furnace (4), in this case, as the organic compound exemplified calcium stearate, citric acid, calcium oleate, calcium, etc. can do.

The melting point of calcium stearate is about 179 ° C to 180 ° C. The melting point of calcium citrate is about 120 ° C. The melting point of calcium oleate is about 83 ° C to 84 ° C. Therefore, when such an organic compound is employed as the organic powder 6, the melting point of the organic compound can be set lower than the temperature of the coke after being cooled by the CDQ 2. According to such a temperature setting, the organic powder 6 spread | dispersed by the heat of the coke conveyed from the coke oven 1 to the blast furnace 4, More specifically, the coke heat after cooling by the CDQ 2, ) Can be dissolved and attached to the coke.

In this way, by attaching the organic powder 6 made of an organic compound containing an alkaline earth metal to the coke, the reactivity of the CO ₂ and the coke can be improved. In particular, since the organic compound is sprayed in a powder state, unlike the configuration in which the organic compound is dissolved and dispersed in water, coke having high reactivity with CO ₂ can be manufactured in a simpler configuration.

In addition, since the organic powder 6 can be melted and adhered to the coke by the heat of the coke, it is not necessary to separately provide a heat source for melting the organic powder 6. Therefore, coke with high reactivity with CO ₂ can be manufactured with a simpler structure. In particular, the melt by an organic powder (6) a spray for after cooling the coke in the remaining heat of the coke may be satisfactorily attached to the organic powder (6) for a coke oven after cooling by attaching to the coke, CO ₂ It can effectively improve the reactivity of and coke.

In addition, a gap may occur in the temperature of the coke after cooling by the CDQ 2 depending on the operating state of the CDQ 2. In such a case, it is also possible to apply the structure which spread | disperses the organic powder 6 corresponding to the temperature of the coke after cooling by preparing several types of organic compounds with different melting points as the organic powder 6, and cooling it. .

The organic molecular weight is not particularly limited as long as the organic compound contains an alkaline earth metal. Moreover, it is preferable that the adhesion amount of the organic compound with respect to coke is 0.5 weight% or more.

FIG. 2 is a flowchart showing an example of processing performed by the coke processing system of FIG. 1. The coke produced by the coking of coal into cokes (1) is carried out from the cokes (1) to the conveying path (5) (step S101), and then subjected to dry extinguishing of the CDQ (2). Is cooled (step S102: cooling step). Then, the organic powder 6 is sprayed from the powder spreading apparatus 3 with respect to the coke after cooling by the CDQ 2 (step S103: powder spreading step), so that the organic powder 6 is heated by coke. It melt | dissolves and adheres to the said coke (step S104).

The organic powder 6 melted by the heat of the coke is preferably attached to the entire surface of the coke, but even if only a part of the surface is attached, the reactivity of the CO ₂ and the coke can be improved. The organic powder 6 adhering to the coke drops to a temperature below the melting point during the conveyance to the furnace 4 and is fixed to the surface of the coke. In this way, the coke having the organic powder 6 adhered to (fixed) on the surface is carried into the furnace 4 via the transfer path 5 (step S105).

In this embodiment, although the structure which sprays the organic powder 6 with respect to the coke after the powder spreading apparatus 3 is cooled by CDQ2 was demonstrated, it is not limited to this structure, Cokes oven; The organic powder 6 may be sprayed on the coke while it is carried out from the sheet 1 and reaches the CDQ 2 through the conveying path 5.

<2nd embodiment>

In 1st Embodiment, the structure which the organic powder 6 melts by the heat of the coke conveyed from the coke furnace 1 to the blast furnace 4, and was attached to the said coke was demonstrated. On the other hand, in 2nd Embodiment, the point which the organic powder 6 melts by heating of a heating apparatus, and adheres to coke differs.

3 is a block diagram showing an example of a coke processing system according to a second embodiment of the present invention. Since this coke processing system has the structure similar to 1st Embodiment except the point which includes the heating apparatus 7, the same code | symbol is attached | subjected about drawing about the same structure, and description is abbreviate | omitted.

The heating device 7 is for heating the organic powder 6, and the organic powder 6 sprayed from the powder spreading device 3 is melted by heating of the heating device 7 and cokes 爐 1 ) Is attached to the coke conveyed to the furnace 4.

For example, when the powder spreading apparatus 3 is installed at a position far from the CDQ 2, the organic powder in which the temperature of coke immediately after cooling by the CDQ 2 is sprayed from the powder spreading apparatus 3 is spread. Even if it is higher than the melting point of (6), when the organic powder 6 is sprayed, the temperature of the coke may fall to the melting point or lower and may not be melted satisfactorily. In addition, when the melting point of the organic powder 6 is higher than the temperature of the coke immediately after cooling by the CDQ 2, the organic powder 6 may be sprayed on the coke immediately after cooling by the CDQ 2. (6) cannot be melted well and adhered to coke. In addition, when the temperature of coke after cooling uses CWQ (coke wet extinguishing method) which is lower than CDQ, or when using the coke which has passed long time after cooling like storage coke purchased or made outside, Even if the organic powder 6 is sprayed on the coke as it is, the organic powder 6 may not be adhered to the coke well.

Even in such a case, when the structure which heats the organic type powder 6 with the heating apparatus 7 like this embodiment is used, the organic type powder 6 can be melt | dissolved favorably, and it can adhere to coke. In particular, to satisfactorily melt the heat stable organic powder (6) from the heating device (7) can be can be satisfactorily adhered to the coke, effectively increase the reactivity of CO ₂ and coke. In addition, even when a gap occurs in the temperature of coke after cooling by the CDQ 2 depending on the operating state of the CDQ 2, as described above, various types of organic compounds having different melting points are prepared as the organic powder 6. There is no need to do it.

If the heating device 7 is configured to heat the organic powder 6 sprayed from the powder spreading device 3 to a melting point or more, the powder spreading device 3 and the heating device 7 are the CDQs as shown in FIG. 3. It is not limited to the structure which was installed separately from (2), The structure which the powder spreading apparatus 3 and the heating apparatus 7 were added to CDQ 2 so that the organic powder 6 may not cause thermal decomposition. It's okay.

FIG. 4 is a flowchart showing an example of processing performed by the coke processing system of FIG. 3. The coke produced by coal drying in the cokes (1) is taken out from the cokes (1) to the conveying path (5) (step S201), and then by the dry digestion treatment of the CDQ (2). It cools (step S202: cooling step). Then, the organic powder 6 is sprayed onto the coke after cooling by the CDQ 2 (step S203: powder spreading step), and the organic powder 6 is heated by the heating apparatus 7. ), The organic powder 6 is melted and adhered to the coke (step S205).

Although the organic powder 6 melted by the heating of the heating device 7 is preferably attached to the entire surface of the coke, even if only a part of the surface is attached, the reactivity of CO ₂ and coke can be improved. The organic powder 6 adhering to the coke is fixed to the surface of the coke because the temperature drops to the melting point or less during the conveyance process to the furnace 4. In this way, the coke with the organic powder 6 attached (fixed) to the surface is carried into the furnace 4 via the conveying path 5 (step S206).

<Example>

FIG. 5 is a schematic diagram showing an example of a hot reactivity test apparatus 100 used to measure the reactivity of coke with organic powder 6 attached to CO ₂ . The hot reactivity test apparatus 100 is constituted by blocking the reaction tube 101 serving as the sample loading part with the reaction tube cover 102, and gas can be introduced into the reaction tube 101 from the gas inlet 103. At the same time, the gas in the reaction tube 101 can be discharged from the gas outlet 104.

As a pretreatment step before performing the test using this hot reactivity test apparatus 100, the coke after cooling by CDQ2 was extract | collected, and the particle size was adjusted to 19 mm-21 mm, and the base coke was manufactured. Calcium stearate was melted and adhered to the base coke by pouring the base coke into a beaker containing calcium stearate as the organic powder 6 while being heated by heating to 200 ° C. in a drier.

Thereafter, the sample prepared as described above was loaded into the reaction tube 101 of the hot reactivity test apparatus 100 to introduce nitrogen gas (N ₂ ) at 5 L / min for 15 minutes from the gas inlet 103. In this manner, after replacing the air in the reaction tube 101 with nitrogen gas, the reaction tube 101 was inserted into an electric furnace set at 1100 ° C. After 45 minutes, the gas introduced from the gas inlet 103 was converted from nitrogen gas to carbon dioxide gas (CO ₂ ), and the carbon dioxide gas was reacted with the coke sample for 2 hours.

Based on the weight of the coke sample after the reaction obtained by the experiment (weight after the reaction) and the weight of the coke sample before the reaction (weight before the reaction) as described above, CRI (CO ₂ ) by the following formula (1) or (2) It is possible to obtain an indicator of the reaction amount). In addition, although not only coke but also calcium stearate (StCa) are reduced by heating or CO ₂ reaction, the following formula (1) is a calculation including the corresponding weight loss, and the following formula (2) is a calculation formula not including the weight loss.

(Formula 1)

(Formula 2)

Fig. 6 is a graph showing the relationship between the CRI (%) calculated by the formulas (1) and (2) and the adhesion amount (%) of calcium stearate. The value of "with stearic acid Ca" calculated by the formula (1). And "without stearic acid Ca" is the value computed by Formula (2). From this graph, it can be seen that as the adhesion amount of calcium stearate to coke increases, the value of CRI increases and the reactivity of CO ₂ and coke improves. In particular, when the adhesion amount of calcium stearate is 3% or more, the reactivity with CO ₂ is significantly improved as compared with base coke.

As can be seen from the above experimental results, by increasing the adhesion amount of calcium stearate to the coke, it is possible to achieve high reactivity of the CO ₂ and coke. Further, as to control the amount of deposition of calcium stearate on the coke is also possible to control the reactivity of the coke with CO _2.

Next, after the reaction, the coke after reaction obtained by the said test was tested for strength after hot reaction (CSR). Specifically, the sample was loaded in an I-type drum tester and was rotated in total for 600 minutes at a speed of 20 revolutions per minute. Thereafter, the sample taken out was sieved through only a particle size of 9.5 mm or less, and the weight (sieve weight) of the particles remaining on the sieve was measured. The strength after reaction was obtained by the following formula (3) on the basis of the body weight obtained by these experiments and the weight of the test sample (test sample weight) before loading into the I-type drum tester.

(Formula 3)

7 is a graph showing the relationship between the CSR (%) and the CRI (%) calculated by the formula (3) compared with the operation value. The operation value means each value of CSR and CRI calculated using the above formulas (1) and (3) for the coke (operational coke) supplied without attaching calcium stearate to the furnace 4 actually operated. . Comparing the coke to which calcium stearate adhered and the operation coke from this graph, it turns out that adhere | attaching calcium stearate has high CSR value with respect to the equivalent CRI value, and high coke strength.

As the value of CRI decreases as the value of CRI increases from the operation value shown in FIG. 7, that is, as the reactivity between CO ₂ and coke increases, the strength of the coke decreases. By attaching calcium, it can be seen that even though the reactivity is equivalent, it is difficult to lower the strength of the coke.

It was carried out following the measurement gas generated at the time of CO ₂ in the reaction test in which the coke adhered to the calcium stearate. Organic salts such as calcium stearate are pyrolyzed by heating to generate a gas having a calorific value. Here, the pyrolysis state under the CO ₂ reaction was investigated at the time of CRI measurement of calcium stearate. Specifically, in the case of coke only and the case where calcium stearate was mixed (for example, 10%) with coke, the gas at the time of a heating reaction was extract | collected, respectively, and the composition and generation | generation amount of gas were measured. In addition, the amount of generated gas was correct | amended by subtracting the introduction amount of carbon dioxide gas from the total amount of the collected gas.

The calorific value (calorie) of each gas was calculated based on the generation rate (%) of each gas obtained by the above experiment. That is, the calorie per 1 Nm ³ of each gas generated by pyrolysis was multiplied by the incidence of each gas and divided by 100. For example, in hydrogen (H ₂ ) in the generated gas, the generation rate of hydrogen when reacted with only coke was 1.61%. In addition, the calorific value of hydrogen was 2570 kcal / Nm ³ . Therefore, the calorific value by hydrogen per 1 Nm ^{3 of} generated gas is as follows. For other gases generated in the same experiment, the calorific value contributing to 1 Nm ³ generated from the composition can be obtained.

(Formula 4)

H ₂ (kcal / Nm ³ ) = (2570 * 1.61) / 100 = 41.377

In addition, the stearic acid is represented by the following formula (α) based on the generation rate C of each gas when reacting coke with calcium stearate and the mixing rate D of calcium stearate with respect to coke and the generation rate C of each gas when only coke is reacted. The gas generation rate A of each gas when only calcium is made to react can be calculated | required. The generation rate of each gas obtained in this way is multiplied by the calorie per 1 Nm ³ of each gas, and divided by 100, so that the calorific value of each gas per 1 Nm ³ generated by thermal decomposition during the reaction of calcium stearate alone can be obtained.

(Formula 5)

　

　

A: Gas generation rate only of calcium stearate (kg / kg)

B: Gas generation rate when mixing calcium stearate and coke (kg / kg)

C: Coke only gas generation rate (kg / kg)

D: compounding ratio of calcium stearate (kg / kg)

In Table 1 below, when the calorific value of each gas calculated by the above calculation is reacted with only coke (base coke), when cobalt is mixed with calcium stearate, and when only calcium stearate calculated by the formula α is reacted. In addition, the sum of the calorific value of each gas in each case was shown.

Table 1

Furtherance Base coke (kcal / Nm ³ ) Base coke + StCa 10% (kcal / Nm ³ ) Gas generation amount of only StCa calculated by the above formula α (kcal / Nm ³ ) H ₂ 41.4 138.0 1007.7 CO 984.2 1181.4 2956.3 CO ₂ 0.0 0.0 0.0 N ₂ 0.0 0.0 0.0 CH ₄ 2.6 479.1 4767.5 C ₃ H ₆ 0.0 770.5 7704.7 C ₃ H ₈ 0.0 84.9 848.9 C ₂ H ₆ 0.0 260.6 2606.1 C ₂ H ₄ 0.0 1167.8 11678.4 Sum 1028.2 4082.3 31569.6

                       └ (+ 3054.1) ┘

According to Table 1, it can be seen that as the 10% blended with calcium stearate in the coke, which increases the amount of hydrocarbons of the as compared to the case reacted only coke increased summation values around 3000 kcal / Nm ³ in heating value. From these results, it can be seen that by attaching calcium stearate to the coke, the energy of the gas generated in the furnace 4 can be increased and reused as energy in the steel mill.

In the above embodiment, calcium (Ca) has been described as an example of the alkaline earth metal, but the alkaline earth metals other than calcium, for example, beryllium (Be), magnesium (Mg), and strontium (Sr) are not limited to this configuration. It is also possible to use an organic powder made of an organic compound containing barium (Ba) and the like.

1 is a block diagram showing an example of a coke processing system according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an example of processing performed by the coke processing system of FIG.

3 is a block diagram showing an example of a coke processing system according to a second embodiment of the present invention.

4 is a flowchart showing an example of processing performed by the coke processing system of FIG. 3.

FIG. 5 is a schematic view showing an example of a hot reactivity test apparatus used to measure the reactivity of coke with organic powder to CO ₂ .

6 is a graph showing the relationship between the CRI (%) and the amount of adhesion of calcium stearate (%) calculated by the formulas (1) and (2).

7 is a graph showing the relationship between the CSR (%) and the CRI (%) calculated by the power equation (3), compared with the operation value.

<Code description>

1: Cokes

2: CDQ

3: powder spraying device

4: Furnace

5: transport

6: organic powder

7: heating device

Claims (8)

In a coke treatment system for treating coke returned from a coke furnace to a blast furnace, Organic powder comprising an organic compound containing an alkaline earth metal with respect to the coke returned from the cokes furnace to the furnace. And a powder spreading device for spreading the organic powder and melting the organic powder by heat to adhere to the coke. The coke processing system according to claim 1, wherein the organic powder is melted by the heat of the coke conveyed from the coke furnace to the furnace and adhered to the coke. The said coke processing system is equipped with the cooling apparatus for cooling the coke conveyed from the coke oven, The said organic powder with respect to the said coke after the said powder spreading apparatus is cooled by the said cooling apparatus. And the melting point of the organic powder is lower than the temperature of the coke after being cooled by the cooling device. The coke treatment system according to claim 1, wherein the coke processing system includes a heating device for heating the organic powder, wherein the organic powder is dissolved by heating of the heating device and conveyed from the cokes to the furnace. Coke processing system, characterized in that attached to. In the coke processing method for coke processing conveyed from a cokes furnace to a blast furnace, Organic powder which consists of organic compounds containing an alkaline earth metal with respect to the coke conveyed from the cokes furnace to the blast furnace is carried out. And a powder dispersing step of melting the organic powder by heat and then attaching the organic powder to the coke. The coke processing method according to claim 5, wherein the organic powder is melted by the heat of the coke conveyed from the coke furnace to the furnace and adhered to the coke. The method according to claim 6, wherein the coke treatment method includes a cooling step for cooling the coke conveyed from the coke oven, in the powder spraying step for the coke after cooling by the cooling step Coke treatment method characterized in that the melting point of the organic powder by spraying the organic powder is lower than the temperature of the coke after cooling by the cooling step. The method according to claim 5, wherein the coke treatment method includes a heating step for heating the organic powder, wherein the organic powder is melted by the heating of the heating step and the coke oven is conveyed from the coke oven to the furnace A coke treatment method, characterized in that attached to the coke.

Images