JP6838570B2 - Briquette charging method and coke manufacturing method - Google Patents
Briquette charging method and coke manufacturing method Download PDFInfo
- Publication number
- JP6838570B2 JP6838570B2 JP2018009407A JP2018009407A JP6838570B2 JP 6838570 B2 JP6838570 B2 JP 6838570B2 JP 2018009407 A JP2018009407 A JP 2018009407A JP 2018009407 A JP2018009407 A JP 2018009407A JP 6838570 B2 JP6838570 B2 JP 6838570B2
- Authority
- JP
- Japan
- Prior art keywords
- briquette
- charging
- coal
- charged
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004484 Briquette Substances 0.000 title claims description 427
- 239000000571 coke Substances 0.000 title claims description 47
- 238000000034 method Methods 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000003245 coal Substances 0.000 claims description 153
- 238000010298 pulverizing process Methods 0.000 claims description 76
- 238000003763 carbonization Methods 0.000 claims description 64
- 239000002245 particle Substances 0.000 claims description 29
- 238000011068 loading method Methods 0.000 claims description 22
- 238000000465 moulding Methods 0.000 description 13
- 239000011230 binding agent Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 239000003610 charcoal Substances 0.000 description 5
- 238000000197 pyrolysis Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coke Industry (AREA)
Description
本発明は、成型炭の粉化を抑制できる成型炭の装入方法および当該成型炭の装入方法で成型炭を装入してコークスを製造するコークスの製造方法に関する。 The present invention relates to a method for charging briquette that can suppress pulverization of briquette and a method for producing coke by charging briquette by the method for charging briquette.
高炉で使用されるコークスを製造する設備として、室炉式コークス炉（以下、単に「コークス炉」と呼ぶ）が利用されている。コークス炉は、炉幅方向に離間して並列する燃焼室とそれらの燃焼室に挟まれて設けられている炭化室から構成されている。そして、このコークス炉の炭化室の天井には、複数個（通常４〜５個）の装炭孔が一列に設けられた装炭孔が配設されており、原料炭はその装炭孔を通じて炭化室内に装入され、前記燃焼室でガスを燃焼して発生する熱を、耐火物を介して炭化室に供給することにより、乾留し、コークスを製造している。 As a facility for producing coke used in a blast furnace, a chamber-type coke oven (hereinafter, simply referred to as "coke oven") is used. The coke oven is composed of combustion chambers that are spaced apart from each other in the width direction of the furnace and carbonized chambers that are sandwiched between the combustion chambers. Then, on the ceiling of the carbonization chamber of this coke oven, carbonization holes provided with a plurality of (usually 4 to 5) carbonization holes in a row are arranged, and the coking coal is passed through the carbonization holes. Coke is produced by carbonizing the coke by charging it into the carbonization chamber and supplying the heat generated by burning the gas in the combustion chamber to the carbonization chamber via a refractory material.
高炉で使用されるコークスは、高炉への搬送時の衝撃や、高炉内の高温雰囲気下での流動降下時の摩擦等に耐えるために、冷間強度、熱間強度が高いことが要求される。そのために、原料となる石炭としては、乾留時に溶融、粘結する粘結炭が用いられている。しかし、世界で採掘可能な石炭の内、粘結炭は１割程度であり高価である。そのため、資源の有効利用の観点から、また、コークス製造コストの低減の観点から、原料として粘結性の低い一般炭をコークス炉で使用することが検討されてきた。その一方法として、一般炭を含む石炭を成型した成型炭を作り、これをコークス炉用の原料炭として使用する技術が開発されている。 The coke used in the blast furnace is required to have high cold strength and hot strength in order to withstand the impact during transportation to the blast furnace and the friction during the flow drop in the high temperature atmosphere in the blast furnace. .. Therefore, as the raw material coal, caking coal that melts and binds during carbonization is used. However, of the coal that can be mined in the world, caking coal is expensive at about 10%. Therefore, from the viewpoint of effective use of resources and from the viewpoint of reducing coke production costs, it has been considered to use steaming coal having low cohesiveness as a raw material in a coke oven. As one of the methods, a technique has been developed in which briquette made by molding coal containing steaming coal is produced and used as coking coal for a coke oven.
コークス炉の炭化室に上方から成型炭を含む配合炭を装入する成型炭配合法は、１９７０年代より工業化され、既設コークス製造設備に成型炭製造設備を付設するだけで容易に実施できるプロセスであることから急速に普及し、コークスの品質向上と製造コスト低減に大きな役割を果たしている。一方、成型炭は粉炭をバインダーで結合させて製造されたものであり、衝撃によって容易に粉化するという問題があった。 The briquette blending method, in which briquette containing briquette is charged into the carbonization chamber of a coke oven from above, has been industrialized since the 1970s and is a process that can be easily implemented simply by adding briquette production equipment to the existing coke production equipment. Because of this, it has spread rapidly and plays a major role in improving the quality of coke and reducing manufacturing costs. On the other hand, briquette is produced by bonding pulverized coal with a binder, and has a problem that it is easily pulverized by impact.
特に、成型炭をコークス炉の炭化室へ装入する際に、成型炭は、炭化室の炉高分に相当する５〜８ｍ程度落下する。成型炭は、当該落下により大きな衝撃を受けて粉化する。コークス炉内で成型炭が粉化すると、装入された成型炭の嵩密度が部分的に過剰となり、乾留後に得られたコークスの押出時の負荷増大や乾留不良を起こす。 In particular, when the briquette is charged into the carbonization chamber of the coke oven, the briquette falls by about 5 to 8 m, which corresponds to the height of the carbonization chamber. The briquette receives a large impact due to the drop and pulverizes. When the briquette is pulverized in the coke oven, the bulk density of the briquette charged becomes partially excessive, which causes an increase in the load during extrusion of the coke obtained after carbonization and poor carbonization.
このような成型炭の粉化を避けるために、特許文献１では、成型炭と粉炭とを使い、最初に粉炭のみを全装入量の３０ｍａｓｓ％ないし６０ｍａｓｓ％入れた後に、残量は粉炭と成型炭との混合物として装入する方法を提案している。 In order to avoid such pulverization of briquette, in Patent Document 1, briquette and pulverized coal are used, and after first adding only pulverized coal at 30 mass% to 60 mass% of the total charge amount, the remaining amount is pulverized coal. We are proposing a method of charging as a mixture with briquette.
特許文献１に記載の方法では、最初に全装入量の３０〜６０％の粉状炭を炭化室に装入するが、粉状炭には成型炭よりも品位の高い石炭を用いないと成型炭と同等の強度のコークスが得られないので、石炭原料のコストが増加する。 In the method described in Patent Document 1, 30 to 60% of the total charge of pulverized coal is first charged into the carbonization chamber, but pulverized coal must use coal having a higher grade than briquette. Since coke having the same strength as briquette cannot be obtained, the cost of coal raw material increases.
また、特許文献１の方法を実施するには、ホッパー下部にスライド式の篩と振動機とが設けられた装炭車に粉状炭と成型炭の混合物を装入し、ホッパー下部に設けられた篩により成型炭を装入せずに粉状炭のみを装入し、３０〜６０％の粉状炭を装入した後に篩を引き抜いて粉状炭と成型炭とを装入する。このように、特許文献１の方法を実施するには、篩と篩の目詰まりを防止する振動機とが設けられた特殊な装炭車が必要となるので設備費用が増加し、コークス原料の装入コストが増加する。また、成型炭の粉化を抑制するためには、成型炭の強度を高めることが考えられるが、成型炭の強度を高めるには添加するバインダーの量を増やすことが必要になるので成型炭の製造コストが上昇する。 Further, in order to carry out the method of Patent Document 1, a mixture of pulverized coal and briquette was charged into a coal loading wheel provided with a sliding sieve and a vibrator at the lower part of the hopper, and the mixture was provided at the lower part of the hopper. Only the briquette is charged without charging the briquette by the sieve, and after charging 30 to 60% of the powdered charcoal, the sieve is pulled out and the briquette and the briquette are charged. As described above, in order to carry out the method of Patent Document 1, a special coal loading wheel provided with a sieve and a vibrator for preventing clogging of the sieve is required, which increases the equipment cost and charges the coke raw material. The entry cost increases. Further, in order to suppress the pulverization of the briquette, it is conceivable to increase the strength of the briquette, but in order to increase the strength of the briquette, it is necessary to increase the amount of the binder to be added. Manufacturing costs go up.
本発明は、上記の事情を鑑みてなされたもので、その目的は、成型炭の製造コストおよび成型炭の装入コストの増加を抑制しながら、装入時の成型炭の粉化を抑制できる成型炭の装入方法を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress an increase in briquette production cost and briquette charging cost, while suppressing briquette pulverization at the time of charging. The purpose is to provide a method for charging briquette.
このような課題を解決するための本発明の特徴は、以下の通りである。
（１）装炭車を用いてコークス炉の炭化室の天井に設けられた複数の装炭孔から、成型炭を前記炭化室に装入する成型炭の装入方法であって、前記成型炭は、少なくとも第１の成型炭と、前記第１の成型炭よりも強度が低い第２の成型炭とを含み、前記複数の装炭孔から第１の装炭孔を選択して、選択された前記第１の装炭孔から前記第１の成型炭の装入を開始し、前記第１の装炭孔として選択されなかった他の装炭孔から第２の装炭孔を選択し、前記第２の装炭孔の下に前記第１の成型炭が装入された後に、選択された前記第２の装炭孔から前記第２の成型炭の装入を開始する、成型炭の装入方法。
（２）前記第１の成型炭および／または前記第２の成型炭は、複数種類の成型炭からなる、（１）に記載の成型炭の装入方法。
（３）前記複数の装炭孔の数は３以上であり、前記複数の装炭孔から一つ置きに前記第１の装炭孔を選択する、（１）または（２）に記載の成型炭の装入方法。
（４）前記成型炭の種類ごとに落下高さと粉化比率との関係を求めておき、前記第１の成型炭と前記第２の成型炭は、粒径が１５ｍｍを超える成型炭であり、前記第１の成型炭は、前記装炭車から前記炭化室の炉底までの落下高さを落下しても粉化比率の目標値よりも高くなる強度を有し、前記第１の成型炭の装入により、前記他の装炭孔における前記装炭車からの落下高さが、落下高さと粉化比率の関係に基づいて求められた第２の成型炭の粉化比率が目標値となる落下高さより低くなった後に前記第２の成型炭の装入を開始する、（１）から（３）のいずれか１つに記載の成型炭の装入方法。
（５）前記成型炭の種類ごとに落下高さと粉化比率との関係を求めておき、前記第１の成型炭および前記第２の成型炭は、粒径が１５ｍｍを超える成型炭であり、前記第１の成型炭は、前記装炭車から前記炭化室の炉底までの高さを落下させた場合に粒径が１５ｍｍ以下となる粉化比率が２０質量％以下となる強度を有し、前記第２の成型炭は、前記装炭車から前記炭化室の炉底までの高さを落下させた場合に粒径が１５ｍｍ以下となる粉化比率が２０質量％を超える強度を有し、前記第１の成型炭の装入により、前記他の装炭孔における前記装炭車からの落下高さが、第２の成型炭の粉化比率が２０質量％以下となる落下高さより低くなった後に前記第２の成型炭の装入を開始する、（１）から（３）のいずれか１つに記載の成型炭の装入方法。
（６）前記成型炭は、粒径が１５ｍｍを超える石炭の成型物が８０質量％以上と、粒径が１５ｍｍ以下の粉状の石炭または石炭の成型物が２０質量％以下からなる、（１）から（５）のいずれか１つに記載の成型炭の装入方法。
（７）（１）から（６）の何れか１つに記載の成型炭の装入方法で炭化室に成型炭を装入し、乾留してコークスを製造するコークスの製造方法。
The features of the present invention for solving such a problem are as follows.
(1) A method of charging briquette into the carbonization chamber from a plurality of coal charging holes provided on the ceiling of the carbonization chamber of a coke oven using a briquette wheel. , At least a first briquette and a second briquette having a strength lower than that of the first briquette are included, and a first briquette hole is selected from the plurality of briquette holes and selected. The charging of the first briquette was started from the first coal charging hole, and the second coal charging hole was selected from the other coal charging holes that were not selected as the first coal charging hole. After the first briquette is charged under the second briquette hole, the briquette charge is started from the selected second briquette hole. How to enter.
(2) The method for charging briquette according to (1), wherein the first briquette and / or the second briquette is composed of a plurality of types of briquette.
(3) The molding according to (1) or (2), wherein the number of the plurality of coal charged holes is 3 or more, and the first coal charged hole is selected every other of the plurality of coal charged holes. How to charge briquette.
(4) The relationship between the drop height and the pulverization ratio is obtained for each type of briquette, and the first briquette and the second briquette are briquettes having a particle size of more than 15 mm. The first briquette has a strength that is higher than the target value of the pulverization ratio even if the drop height from the coal loading wheel to the bottom of the carbonization chamber is dropped, and the first briquette of the first briquette. Due to the charging, the drop height from the coal loading vehicle at the other coal charging holes is the drop at which the pulverization ratio of the second briquette obtained based on the relationship between the drop height and the pulverization ratio is the target value. The method for charging briquette according to any one of (1) to (3), wherein the charging of the second briquette is started after the height becomes lower than the height.
(5) The relationship between the drop height and the pulverization ratio is determined for each type of briquette, and the first briquette and the second briquette are briquettes having a particle size of more than 15 mm. The first briquette has a strength such that when the height from the coal loading wheel to the bottom of the carbonization chamber is dropped, the particle size is 15 mm or less and the pulverization ratio is 20% by mass or less. The second briquette has a strength of more than 20% by mass in a pulverization ratio such that the particle size becomes 15 mm or less when the height from the coal loading wheel to the bottom of the carbonization chamber is dropped. After the first briquette charge causes the drop height of the other briquette holes from the coal wheel to be lower than the drop height at which the pulverization ratio of the second briquette is 20% by mass or less. The method for charging briquette according to any one of (1) to (3), which starts charging the second briquette.
(6) The briquette comprises 80% by mass or more of coal moldings having a particle size of more than 15 mm and 20% by mass or less of powdered coal or coal moldings having a particle size of 15 mm or less (1). ) To (5). The method for charging briquette according to any one of (5) and (5).
(7) A method for producing coke, wherein the briquette is charged into a carbonization chamber by the method for charging briquette according to any one of (1) to (6) and carbonized to produce coke.
本発明の実施により、強度の低い成型炭を用いつつ、特殊な装炭車を用いることなく装入時の成型炭の粉化を抑制できる。これにより、成型炭の製造コストおよび成型炭の装入コストの増加を抑制しながら、炭化室装入時の成型炭の粉化を抑制できる。 By implementing the present invention, it is possible to suppress the pulverization of the briquette at the time of charging without using a special coal loading wheel while using the low-strength briquette. As a result, it is possible to suppress the pulverization of the briquette at the time of charging in the carbonization chamber while suppressing the increase in the production cost of the briquette and the charging cost of the briquette.
図１は、本実施形態に係る成型炭の装入方法の概要を示す図である。図１（ａ）は、装入前の炭化室の状態を示す。コークス炉１０は、本実施形態に係る成型炭の装入方法が実施できるコークス炉の一例である。コークス炉１０は、炭化室１２と、炭化室１２に成型炭を装入する４基のホッパー３０、３２、３４、３６を有する装炭車と、を備える。炭化室１２の天井には、４つの装炭孔２０、２２、２４、２６が設けられている。装炭車のホッパー３０、３２、３４、３６は、装炭孔２０、２２、２４、２６に対応して４基設けられている。これらの装炭車のホッパー３０、３２、３４、３６は、不図示の石炭塔から成型炭を受け、対応する装炭孔から成型炭を装入する。なお、本実施形態における成型炭とは、複数銘柄の石炭と粘結材であるバインダーとを含む原料を混練し、加圧成型して製造された成型炭である。 FIG. 1 is a diagram showing an outline of a method for charging briquette according to the present embodiment. FIG. 1A shows the state of the carbonization chamber before charging. The coke oven 10 is an example of a coke oven in which the method for charging briquette according to the present embodiment can be carried out. The coke oven 10 includes a carbonization chamber 12 and a coal charging wheel having four hoppers 30, 32, 34, and 36 for charging the briquette into the carbonization chamber 12. Four carbonization holes 20, 22, 24, and 26 are provided on the ceiling of the carbonization chamber 12. Four hoppers 30, 32, 34, and 36 of the coal loading vehicle are provided corresponding to the coal loading holes 20, 22, 24, and 26. The hoppers 30, 32, 34, and 36 of these coal loading vehicles receive the briquette from a coal tower (not shown) and charge the briquette through the corresponding coal charging holes. The briquette in the present embodiment is a briquette produced by kneading a raw material containing a plurality of brands of coal and a binder as a binder and press-molding the coal.
本実施形態に係る成型炭の装入方法に用いられる成型炭は、例えば、２種の異なる強度の成型炭から構成される。強度の高い成型炭の圧潰強度は、例えば、１．７ｋＮであり、強度の低い成型炭の圧潰強度は、例えば、１．１ｋＮである。ここで、圧潰強度１．７ｋＮの成型炭は、第１の成型炭の一例であり、圧潰強度１．１ｋＮの成型炭は、第２の成型炭の一例である。本実施形態では、成型炭の強度として、成型炭の圧潰強度を用いた。本実施形態に係る成型炭の圧潰強度は、圧縮試験機を用いて成型炭を圧縮速度１ｍｍ／ｍｉｎで圧縮したときに測定される強度の最大値である。 The briquette used in the method for charging the briquette according to the present embodiment is composed of, for example, two types of briquette having different strengths. The crushing strength of the high-strength briquette is, for example, 1.7 kN, and the crushing strength of the low-strength briquette is, for example, 1.1 kN. Here, the briquette having a crushing strength of 1.7 kN is an example of the first briquette, and the briquette having a crushing strength of 1.1 kN is an example of the second briquette. In this embodiment, the crushing strength of the briquette was used as the strength of the briquette. The crushing strength of the briquette according to the present embodiment is the maximum value of the strength measured when the briquette is compressed at a compression rate of 1 mm / min using a compression tester.
本実施形態に係る成型炭の装入方法では、まず、１つ置きの装炭孔２０、２４を選択し、装炭孔２０、２４から第１の成型炭の装入を開始する。装炭孔２０、２４から装入された成型炭は、炉底面と、装入された第１の成型炭の上面とがなす角度が第１の成型炭の安息角となるように炉底に向かって広がって炭化室１２に装入される。図１に示した例においては、装炭孔２０、２４が第１の装炭孔となる。 In the method for charging briquette according to the present embodiment, first, every other coal charging hole 20 or 24 is selected, and charging of the first briquette from the coal charging holes 20 or 24 is started. The briquette charged from the coal charging holes 20 and 24 is placed on the bottom of the furnace so that the angle formed by the bottom surface of the furnace and the top surface of the first charged coal is the angle of repose of the first briquette. It spreads toward and is charged into the carbonization chamber 12. In the example shown in FIG. 1, the coal charging holes 20 and 24 are the first coal charging holes.
図１（ｂ）は、第１の成型炭が炭化室１２に所定量装入された後の状態を示す。図１（ｂ）に示すように、第１の成型炭は、第１の装炭孔に選択されなかった装炭孔２２、２６の下にも装入される。第２の成型炭の装入は、第１の装炭孔に選択されなかった装炭孔２２、２６の下に第１の成型炭が装入された後に開始される。図１に示した例においては、装炭孔２２、２６が第２の装炭孔となる。 FIG. 1B shows a state after the first briquette has been charged into the carbonization chamber 12 in a predetermined amount. As shown in FIG. 1 (b), the first briquette is also charged under the coal charging holes 22 and 26 which are not selected as the first coal charging holes. The charging of the second briquette is started after the first briquette is charged under the coal charging holes 22 and 26 which are not selected in the first coal charging hole. In the example shown in FIG. 1, the coal charging holes 22 and 26 are the second coal charging holes.
第２の成型炭は、装炭孔２２、２６の下に第１の成型炭が装入された後に装入されるので、第２の成型炭は、第１の成型炭の上に落下する。このため、第２の成型炭の落下高さは、第１の成型炭が装入された分だけ低くなるとともに、第２の成型炭が装入時に受ける落下衝撃は第１の成型炭によって緩衝される。落下高さの低下と、第１の成型炭の緩衝により、第２の成型炭が装入時に受ける落下衝撃は、第１の成型炭が受ける落下衝撃よりも小さくなる。 Since the second briquette is charged after the first briquette is charged under the coal charging holes 22 and 26, the second briquette falls onto the first briquette. .. Therefore, the drop height of the second briquette is lowered by the amount that the first briquette is charged, and the drop impact that the second briquette receives at the time of charging is buffered by the first briquette. Will be done. Due to the decrease in the drop height and the buffering of the first briquette, the drop impact received by the second briquette at the time of charging is smaller than the drop impact received by the first briquette.
図１（ｃ）は、第１の成型炭および第２の成型炭を炭化室１２の上部まで装入した状態を示す。装炭孔２２、２６から第２の成型炭の装入を開始した後においては、炭化室１２に目標とする量の成型炭が装入されるまで第１の成型炭および第２の成型炭を任意の方法で装入してよい。例えば、装炭孔２２、２６から第２の成型炭の装入を開始した後においても装炭孔２０、２４から第１の成型炭の装入を継続してもよく、装炭孔２２、２６から第２の成型炭の装入を開始した後に第１の成型炭の装入を停止してもよい。第１の成型炭の装入を停止した場合には、装炭孔２２、２６から第２の成型炭を炭化室１２の上部まで装入した後に、装炭孔２０、２４から第１の成型炭の装入を開始し、第１の成型炭を炭化室１２の上部まで装入する。そして、目標となる成型炭を炭化室１２に装入した後、当該成型炭を乾留してコークスを製造する。 FIG. 1C shows a state in which the first briquette and the second briquette are charged up to the upper part of the carbonization chamber 12. After the charging of the second briquette is started from the coal charging holes 22 and 26, the first briquette and the second briquette are charged until the target amount of briquette is charged into the carbonization chamber 12. May be charged by any method. For example, even after the charging of the second briquette from the coal charging holes 22 and 26 is started, the charging of the first briquette from the coal charging holes 20 and 24 may be continued. After starting the charging of the second briquette from 26, the charging of the first briquette may be stopped. When the charging of the first briquette is stopped, the second briquette is charged from the coal charging holes 22 and 26 to the upper part of the carbonization chamber 12, and then the first molding is performed from the coal charging holes 20 and 24. Charcoal charging is started, and the first briquette is charged up to the upper part of the carbonization chamber 12. Then, after charging the target briquette into the carbonization chamber 12, the briquette is carbonized to produce coke.
本実施形態に係る成型炭の装入方法を用いることで、第１の成型炭よりも強度の低い第２の成型炭を用いながら、強度の低い第２の成型炭の装入時の粉化を抑制でき、成型炭の粉化によるコークスの押出時の負荷増大や乾留不良を抑制できる。強度の低い第２の成型炭は、強度の高い第１の成型炭よりも製造コストを低廉化できるので、第２の成型炭を用いることで、成型炭の製造コストの増加を抑制できる。また、それぞれの装炭孔から同じ種類の成型炭を装入するので、各装炭孔から装入される成型炭を収容する石炭塔を配置し、当該石炭塔から成型炭を装炭車に供給すれば、従来の装炭車を用いて装入できる。このため、装炭車に篩や振動機を設ける必要がないので、成型炭の装入コストの上昇も抑制できる。 By using the method for charging the briquette according to the present embodiment, the second briquette having a lower strength than the first briquette is used, and the second briquette having a lower strength is pulverized at the time of charging. It is possible to suppress an increase in load during extrusion of coke due to pulverization of briquette and a defect in dry distillation. Since the production cost of the second briquette having low strength can be lower than that of the first briquette having high strength, it is possible to suppress an increase in the production cost of the briquette by using the second briquette. In addition, since the same type of briquette is charged from each coal charging hole, a coal tower for accommodating the briquette charged from each coal charging hole is arranged, and the molded coal is supplied to the coal loading vehicle from the coal tower. Then, it can be charged using a conventional coal loading vehicle. Therefore, since it is not necessary to provide a sieve or a vibrator on the coal loading wheel, it is possible to suppress an increase in the charging cost of the briquette.
なお、図１に示した例において、４つの装炭孔２０、２２、２４、２６から１つ置きの装炭孔２０、２４を選択し、当該装炭孔から第１の成型炭の装入を開始した例を示したが、これに限られない。第１の成型炭は、装炭孔２０、２２、２４、２６から選択された任意の装炭孔を選択して装入されてよく、第２の成型炭は、選択されなかった他の装炭孔から装入されればよい。第１の成型炭の装入により、第２の成型炭が装入される装炭孔の下に第１の成型炭が装入されれば、その後に装入される第２の成型炭の装入時の粉化は抑制される。 In the example shown in FIG. 1, every other briquette holes 20, 24 are selected from the four briquette holes 20, 22, 24, 26, and the first briquette is charged through the holes. Is shown, but it is not limited to this. The first briquette may be charged by selecting an arbitrary briquette hole selected from the coal charging holes 20, 22, 24, 26, and the second briquette may be charged with other briquette holes not selected. It may be charged from the charcoal hole. If the first briquette is charged under the coal charging hole into which the second briquette is charged by charging the first briquette, the second briquette to be charged thereafter Powdering at the time of charging is suppressed.
但し、図１に示したコークス炉１０のように装炭孔の数が３以上である場合には、１つ置きの装炭孔２０、２４から第１の成型炭を装入し、選択されていない他の装炭孔２２、２６から第２の成型炭を装入することが好ましい。これにより、第１の成型炭を第２の成型炭が装入される装炭孔２２、２６の下に効率よく装入できる。 However, when the number of coal charging holes is 3 or more as in the coke oven 10 shown in FIG. 1, the first briquette is charged from every other coal charging holes 20 and 24 and selected. It is preferable to charge the second briquette from the other coal charging holes 22 and 26 that have not been charged. As a result, the first briquette can be efficiently charged under the coal charging holes 22 and 26 in which the second briquette is charged.
さらに、特許文献２によれば、炭化室に装入される石炭原料のうち、粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にすることで、石炭原料の乾留速度が向上し、コークスの生産性が向上する。このため、炭化室１２に装入される粒径１５ｍｍを超える成型炭の割合が７０質量％以上９５質量％以下になるように、第１の成型炭の装入量と、第２の成型炭の装入量とを調整することが好ましい。これにより、炭化室１２に装入された成型炭の乾留速度が向上し、コークスの生産性を向上できる。 Further, according to Patent Document 2, the dry distillation rate of the coal raw material is increased by reducing the proportion of the briquette having a particle size of more than 15 mm to 70% by mass or more and 95% by mass or less among the coal raw materials charged into the carbonization chamber. Improves and improves coke productivity. Therefore, the amount of the first briquette charged and the second briquette so that the proportion of the briquette having a particle size of more than 15 mm charged into the carbonization chamber 12 is 70% by mass or more and 95% by mass or less. It is preferable to adjust the amount of charge. As a result, the dry distillation rate of the briquette charged in the carbonization chamber 12 is improved, and the productivity of coke can be improved.
例えば、第１の成型炭を、粒径が１５ｍｍを超える成型炭であって、装入時に粒径が１５ｍｍ以下となる粉化比率が２０質量％以下となるような強度の高い成型炭とし、第２の成型炭を、粒径が１５ｍｍを超える成型炭であって、装入時に粒径が１５ｍｍ以下となる粉化比率が２０質量％を超えるような強度の低い成型炭とする。 For example, the first briquette is a briquette having a particle size of more than 15 mm and having a high strength such that the pulverization ratio of the briquette having a particle size of 15 mm or less at the time of charging is 20% by mass or less. The second briquette is a briquette having a particle size of more than 15 mm and a low strength such that the pulverization ratio of the briquette having a particle size of 15 mm or less at the time of charging exceeds 20% by mass.
予め、成型炭の種類ごとに落下高さと粉化比率との関係を求めておき、第１の成型炭を装炭孔２０、２４から装入し、第１の成型炭の装入により装炭孔２２、２６における装炭車のホッパー３２、３６からの落下高さが、第２の成型炭の粉化比率が２０質量％以下になる落下高さよりも低くなった後に、装炭孔２２、２６から第２の成型炭の装入を開始する。これにより、製造コストが低廉な第２の成型炭を用いつつ、第２の成型炭の装入時の粉化が抑制され、その粉化比率は２０質量％以下になる。これにより、炭化室１２に装入される粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にできるので、成型炭の乾留時間が向上しコークスの生産性を向上できる。なお、本実施形態において、粒径１５ｍｍを超える成型炭とは、目開き１５ｍｍの篩を用いて篩上に篩分けられる成型炭である。 The relationship between the drop height and the pulverization ratio is obtained in advance for each type of briquette, the first briquette is charged through the coal charging holes 20 and 24, and the briquette is charged by charging the first briquette. After the drop height of the coal-loaded wheels 32 and 36 in the holes 22 and 26 is lower than the drop height at which the pulverization ratio of the second briquette is 20% by mass or less, the coal-loaded holes 22 and 26 The charging of the second briquette is started from. As a result, while using the second briquette, which has a low manufacturing cost, pulverization at the time of charging the second briquette is suppressed, and the pulverization ratio is 20% by mass or less. As a result, the proportion of the briquette having a particle size of more than 15 mm charged into the carbonization chamber 12 can be reduced to 70% by mass or more and 95% by mass or less, so that the dry distillation time of the briquette can be improved and the coke productivity can be improved. In the present embodiment, the briquette having a particle size of more than 15 mm is a briquette that is sieved on a sieve using a sieve having a mesh size of 15 mm.
装炭孔２０、２４から装入された第１の成型炭であって、装炭孔２２、２６の下に装入される第１の成型炭の高さは、第１の成型炭の装入量と、第１の成型炭の安息角と、炭化室１２における各寸法とから算出できる。このため、予め求められた落下高さと粉化比率との関係から第２の成型炭の粉化比率が２０質量％以下になる落下高さを算出し、当該落下高さとなる第１の成型炭の装入量を、第１の成型炭の安息角および嵩密度と、炭化室１２の各寸法とから算出する。そして、算出された装入量の第１の成型炭を装入した後に、第２の成型炭の装入を開始することで、強度の低い第２の成型炭を用いながら、第２の成型炭の装入時の粉化を抑制でき、炭化室１２に装入される粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にできる。 The height of the first briquette charged from the coal charging holes 20 and 24, and the height of the first briquette charged under the coal charging holes 22 and 26 is the charge of the first briquette. It can be calculated from the input amount, the angle of repose of the first briquette, and each dimension in the carbonization chamber 12. Therefore, the drop height at which the pulverization ratio of the second briquette is 20% by mass or less is calculated from the relationship between the drop height and the pulverization ratio obtained in advance, and the first briquette having the drop height is calculated. The charge amount of the briquette is calculated from the angle of repose and bulk density of the first briquette and each dimension of the carbonization chamber 12. Then, after charging the calculated amount of the first briquette, the charging of the second briquette is started, so that the second briquette is used while using the second briquette having low strength. It is possible to suppress pulverization at the time of charging charcoal, and the proportion of briquette having a particle size of more than 15 mm charged into the carbonization chamber 12 can be reduced to 70% by mass or more and 95% by mass or less.
次に、成型炭の落下高さと成型炭の粉化比率との関係について説明する。成型炭の落下高さが高くなると成型炭に作用する落下衝撃が大きくなるので、成型炭の粉化比率は高くなる。また、成型炭の強度が高くなると、成型炭に作用する落下衝撃に耐えて成型炭の粉化が抑制されるので、成型炭の粉化比率は低くなる。この確認を行うため、一般的な炭化室を模擬した試験容器４０を用いて、成型炭の装入試験を実施した。 Next, the relationship between the drop height of the briquette and the pulverization ratio of the briquette will be described. As the drop height of the briquette increases, the drop impact acting on the briquette increases, so that the pulverization ratio of the briquette increases. Further, when the strength of the briquette is increased, the briquette can withstand the drop impact acting on the briquette and the pulverization of the briquette is suppressed, so that the pulverization ratio of the briquette becomes low. In order to confirm this, a briquette charging test was carried out using a test container 40 simulating a general carbonization chamber.
図２は、装入試験で用いた試験容器の斜視図である。試験容器４０は、幅寸法Ｌ１が４３０ｍｍ、高さ寸法Ｌ２が７５２０ｍｍ、長さ寸法Ｌ３が３０２０ｍｍの矩形の容器であり、試験容器４０の上面には開口部４２が設けられ、側面には開閉可能な窓４４が高さ１ｍごとに複数設けられている。試験容器４０の幅寸法Ｌ１および高さ寸法Ｌ２は、それぞれ一般的なコークス炉における炭化室の幅および落下高さと同程度にしている。また、試験容器４０の長さ寸法Ｌ３は、短すぎると試験容器４０の側面の影響を受けて成型炭の装入挙動が変化するおそれがあるので、寸法Ｌ３は、成型炭の装入挙動に影響が出ない程度の長さにした。 FIG. 2 is a perspective view of the test container used in the charging test. The test container 40 is a rectangular container having a width dimension L1 of 430 mm, a height dimension L2 of 7520 mm, and a length dimension L3 of 3020 mm. An opening 42 is provided on the upper surface of the test container 40 and can be opened and closed on the side surface. A plurality of windows 44 are provided for each 1 m in height. The width dimension L1 and the height dimension L2 of the test container 40 are set to be about the same as the width and drop height of the carbonization chamber in a general coke oven, respectively. Further, if the length dimension L3 of the test container 40 is too short, the charging behavior of the briquette may change due to the influence of the side surface of the test container 40. The length was set so that it would not be affected.
成型炭の装入試験では、試験容器４０の開口部４２から成型炭を装入した。装入する成型炭は、縦４４ｍｍ、横４４ｍｍ、高さ３６ｍｍのマセック型の成型炭である。成型炭の圧潰強度は、バインダーであるＳＯＰの添加量を変えることで１．７ｋＮ、１．１ｋＮ、０．７ｋＮに調整した。 In the briquette charging test, the briquette was charged through the opening 42 of the test container 40. The briquette to be charged is a Masek type briquette having a length of 44 mm, a width of 44 mm, and a height of 36 mm. The crushing strength of the briquette was adjusted to 1.7 kN, 1.1 kN, and 0.7 kN by changing the amount of SOP as a binder.
試験容器４０を満たすまで開口部４２から成型炭を６ｔ装入した後、側面に設けられた窓４４から成型炭を採取し、成型炭の粉化比率を測定した。なお、本実施形態では、試験容器４０の窓４４から採取した全成型炭のうち、目開き１５ｍｍの篩を用いて篩下に篩分けられた成型炭は粉状炭になったとして、成型炭の粉化比率を、篩下質量と、全成型炭質量と、下記（１）式とを用いて算出した。
粉化比率（質量％）＝［篩下質量（ｋｇ）／全成型炭質量（ｋｇ）］×１００・・・（１）
After charging 6 tons of briquette from the opening 42 until the test container 40 was filled, the briquette was collected from the window 44 provided on the side surface, and the pulverization ratio of the briquette was measured. In the present embodiment, among all the briquette collected from the window 44 of the test container 40, the briquette that has been sieved under the sieve using a sieve with a mesh opening of 15 mm is assumed to be briquette. The pulverization ratio of was calculated using the mass under the sieve, the total briquette mass, and the following equation (1).
Powdering ratio (mass%) = [mass under sieve (kg) / mass of total briquette (kg)] x 100 ... (1)
図３は、成型炭の粉化比率と落下高さとの関係を示すグラフである。図３において、横軸は、粉化比率（質量％）であり、縦軸は、落下高さ（ｍ）である。図３によれば、落下高さが高くなるにつれて粉化比率は増加する。また、圧潰強度の高い成型炭の粉化比率は低く、圧潰強度の低い成型炭の粉化比率は高い。一般的なコークス炉の落下高さである約８ｍの装入では、圧潰強度が１．７ｋＮ以上の成型炭では粉化比率が２０質量％以下となるが、圧潰強度が１．７ｋＮ未満の成型炭では粉化比率が２０質量％を超える。 FIG. 3 is a graph showing the relationship between the pulverization ratio of briquette and the drop height. In FIG. 3, the horizontal axis is the pulverization ratio (mass%), and the vertical axis is the drop height (m). According to FIG. 3, the pulverization ratio increases as the drop height increases. Further, the pulverization ratio of the briquette having a high crushing strength is low, and the pulverization ratio of the briquette having a low crushing strength is high. With a general coke oven drop height of about 8 m, briquette with a crushing strength of 1.7 kN or more has a pulverization ratio of 20% by mass or less, but molding with a crushing strength of less than 1.7 kN. In charcoal, the pulverization ratio exceeds 20% by mass.
上述したように、炭化室１２に成型炭を装入してコークスを製造する場合に、装入時の成型炭の粉化比率を２０質量％以下に抑えることができれば、炭化室１２に装入される粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にできる。最初に炭化室１２に装入する成型炭であって、装入時の落下高さが約８ｍである場合には、炭化室１２に圧潰強度が１．７ｋＮ以上の成型炭を装入する。これにより、成型炭の粉化比率を２０質量％以下に抑えることができ、粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にできる。 As described above, when briquette is charged into the carbonization chamber 12 to produce coke, if the pulverization ratio of the briquette at the time of charging can be suppressed to 20% by mass or less, the coal is charged into the carbonization chamber 12. The proportion of briquette having a particle size of more than 15 mm can be reduced to 70% by mass or more and 95% by mass or less. When the briquette is first charged into the carbonization chamber 12 and the drop height at the time of charging is about 8 m, the briquette having a crushing strength of 1.7 kN or more is charged into the carbonization chamber 12. As a result, the pulverization ratio of the briquette can be suppressed to 20% by mass or less, and the ratio of the briquette having a particle size of more than 15 mm can be reduced to 70% by mass or more and 95% by mass or less.
一方、圧潰強度が１．１ｋＮの成型炭の粉化比率を２０質量％以下にするには、図３から落下高さを約６ｍ以下にすればよいことがわかる。同じく、圧潰強度が０．７ｋＮの成型炭の粉化比率を２０質量％以下にするには、落下高さを約４ｍ以下にすればよいことがわかる。 On the other hand, in order to reduce the pulverization ratio of the briquette having a crushing strength of 1.1 kN to 20% by mass or less, it can be seen from FIG. 3 that the drop height should be set to about 6 m or less. Similarly, it can be seen that in order to reduce the pulverization ratio of the briquette having a crushing strength of 0.7 kN to 20% by mass or less, the drop height should be set to about 4 m or less.
例えば、装炭車から炭化室の炉底までの落下高さが８ｍである一般的なコークス炉において、圧潰強度が１．７ｋＮの第１の成型炭と、圧潰強度が１．１ｋＮの第２の成型炭を用いた場合では、まず、１つ置きの装炭孔２０、２４から第１の成型炭の装入を開始する。そして、第１の成型炭の装入により、他の装炭孔２２、２６における装炭車からの落下高さが６ｍより低くなった後に、他の装炭孔２２、２６から第２の成型炭の装入を開始する。このように、第１の成型炭および第２の成型炭を装入することで、炭化室１２に装入される粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にできる。 For example, in a general coke oven in which the drop height from the coal loading wheel to the bottom of the carbonization chamber is 8 m, the first briquette having a crushing strength of 1.7 kN and the second briquette having a crushing strength of 1.1 kN. When briquette is used, first, the charging of the first briquette is started from every other coal charging holes 20 and 24. Then, due to the charging of the first briquette, the drop height from the coal wheel in the other briquette holes 22 and 26 becomes lower than 6 m, and then the second briquette from the other briquette holes 22 and 26 to the second briquette. Start charging. By charging the first briquette and the second briquette in this way, the proportion of the briquette having a particle size of more than 15 mm charged into the carbonization chamber 12 can be reduced to 70% by mass or more and 95% by mass or less. ..
なお、本実施形態において、成型炭の強度を圧潰強度で示したが、これに限られない。成型炭の強度として、圧潰強度に代えて、トロンメル強度やＩ型ドラム強度などの回転強度、シャッター強度、落下試験によって求められる粉率を用いてもよい。さらに、装炭車のホッパーの成型炭切り出し口から炭化室１２の炉底までの落下高さが８ｍであり、成型炭の粉化比率の目標値を２０％以下とした例について説明したが、これに限られない。成型炭の粉化比率の目標値は、求められるコークスの生産性の向上度合いに応じて任意の値としてよい。コークス原料として用いる成型炭について、予め落下高さと粉化比率の関係を求めておけば、その関係に基づいて、粉化比率の目標値となる落下高さを定めることができる。そして、各成型炭を、各装炭車から炭化室１２の炉底まで、または、炭化室１２にすでに装入された成型炭の上面までの落下高さが、粉化比率の目標値となる落下高さよりも低くなった後に、成型炭の装入を開始すれば、成型炭の粉化比率を目標値より小さくできる。 In the present embodiment, the strength of the briquette is shown by the crushing strength, but the present invention is not limited to this. As the strength of the briquette, instead of the crushing strength, the rotational strength such as trommel strength and I-type drum strength, the shutter strength, and the powder ratio obtained by the drop test may be used. Further, an example was described in which the drop height from the briquette cutout port of the hopper of the coal loading vehicle to the furnace bottom of the carbonization chamber 12 was 8 m and the target value of the briquette pulverization ratio was set to 20% or less. Not limited to. The target value of the pulverization ratio of briquette may be an arbitrary value depending on the degree of improvement in coke productivity required. For the briquette used as a coke raw material, if the relationship between the drop height and the pulverization ratio is obtained in advance, the drop height that is the target value of the pulverization ratio can be determined based on the relationship. Then, the drop height of each briquette from each coal loading wheel to the bottom of the carbonization chamber 12 or to the upper surface of the briquette already charged in the carbonization chamber 12 is the target value of the pulverization ratio. If the charging of the briquette is started after the height becomes lower than the height, the pulverization ratio of the briquette can be made smaller than the target value.
また、本実施形態に用いる第１の成型炭を、圧潰強度が１．７ｋＮの成型炭とし、第２の成型炭を、圧潰強度が１．１ｋＮの成型炭とした例を示したが、これに限られない。例えば、第１の成型炭および第２の成型炭は、それぞれ複数の圧潰強度を有する複数種類の成型炭を含んでもよい。 Further, an example is shown in which the first briquette used in the present embodiment is a briquette having a crushing strength of 1.7 kN, and the second briquette is a briquette having a crushing strength of 1.1 kN. Not limited to. For example, the first briquette and the second briquette may contain a plurality of types of briquette having a plurality of crushing strengths.
この場合に、第１の成型炭の圧潰強度と第２の成型炭の圧潰強度とを比較する場合には、第１の成型炭における最も低い圧潰強度と、第２の成型炭における最も高い圧潰強度とを用いて比較する。これにより、最初に装入される第１の成型炭の圧潰強度は、後に装入される第２の成型炭の圧潰強度よりも高くなり、圧潰強度の低い成型炭が最初に装入され、粉化比率が高くなることを回避できる。また、成型炭の粉化比率に基づいて落下高さを定める場合には、第１の成型炭および第２の成型炭ともに最も低い圧潰強度を用いる。これにより、装入後における成型炭の粉化比率の目標値を確実に達成できる。 In this case, when comparing the crushing strength of the first briquette and the crushing strength of the second briquette, the lowest crushing strength of the first briquette and the highest crushing strength of the second briquette are used. Compare with strength. As a result, the crushing strength of the first briquette charged first becomes higher than the crushing strength of the second briquette charged later, and the briquette having a lower crushing strength is charged first. It is possible to avoid a high pulverization ratio. When the drop height is determined based on the pulverization ratio of the briquette, the lowest crushing strength is used for both the first briquette and the second briquette. As a result, the target value of the pulverization ratio of the briquette after charging can be surely achieved.
本実施形態に係る成型炭の装入方法に用いられる成型炭は、粉砕した石炭をバインダーと混合し、成型機を用いて成型することによって製造される。成型炭の強度には、バインダーの量、バインダーの種類、成型条件、水分量、石炭の粒度などが影響するので、これら因子を変更することによって成型炭の強度が変更されてよい。第２の成型炭の圧潰強度は第１の成型炭の圧潰強度よりも低いので、第２の成型炭の石炭原料や成型条件等の自由度は第１の成型炭の成型条件等より高くなる。本実施形態に係る成型炭の装入方法を用いることで、炭化室に装入される成型炭の一部に成型条件等の自由度の高い成型炭を用いることができる。なお、成型炭には、石炭以外に、粉コークス、オイルコークス類、粘結材、プラスチック類、油類、バイオマスなどが含まれていてもよい。また、成型炭には１５ｍｍ以下の粉状の石炭や成型炭の崩壊物が含まれていてもよい。但し、炭化室１２に装入される粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にするには、装入される成型炭に含まれる粒径が１５ｍｍを超える石炭の成型物の割合が８０質量％以上であり、粒径１５ｍｍ以下の粉状の石炭または石炭の成型物の割合が２０質量％以下であることが好ましい。 The briquette used in the method for charging briquette according to the present embodiment is produced by mixing crushed coal with a binder and molding it using a molding machine. Since the amount of the binder, the type of the binder, the molding conditions, the amount of water, the particle size of the coal and the like affect the strength of the briquette, the strength of the briquette may be changed by changing these factors. Since the crushing strength of the second briquette is lower than the crushing strength of the first briquette, the degree of freedom of the coal raw material and molding conditions of the second briquette is higher than that of the first briquette. .. By using the method of charging the briquette according to the present embodiment, it is possible to use the briquette having a high degree of freedom in molding conditions and the like as a part of the briquette charged into the carbonization chamber. In addition to coal, briquette may contain coke breeze, oil coke, binder, plastics, oils, biomass and the like. Further, the briquette may contain powdered coal of 15 mm or less or a disintegrated product of briquette. However, in order to reduce the proportion of the briquette having a particle size of more than 15 mm charged into the carbonization chamber 12 to 70% by mass or more and 95% by mass or less, the coal having a particle size of more than 15 mm contained in the charged coal It is preferable that the proportion of the molded product is 80% by mass or more, and the proportion of powdered coal having a particle size of 15 mm or less or a molded product of coal is 20% by mass or less.
次に、本実施形態に係る成型炭の装入方法における装入パターンによる装入をシミュレートし、各強度の成型炭の装入比率を見積もった結果を説明する。圧潰強度が１．７ｋＮ、１．１ｋＮ、０．７ｋＮの３種類の成型炭を用いて、これらの成型炭を装炭車から炉底までの落下高さが８ｍの炭化室１２に装入するとして、装入パターンを変えて成型炭を装入した場合の各強度の成型炭の装入比率を見積もった。 Next, the result of simulating the charging by the charging pattern in the charging method of the briquette according to the present embodiment and estimating the charging ratio of the briquette of each strength will be described. Assuming that three types of briquette with crushing strength of 1.7 kN, 1.1 kN, and 0.7 kN are used, and these briquettes are charged into the carbonization chamber 12 having a drop height of 8 m from the coal loading wheel to the furnace bottom. , The charging ratio of the briquette of each strength was estimated when the briquette was charged by changing the charging pattern.
まず、装入パターン１で成型炭を装入した結果について説明する。装入パターン１では、１回目の装入として、圧潰強度が１．７ｋＮの成型炭を装炭孔２０、２４から装入する。図４は、装入パターン１における１回目の装入後の断面模式図である。図４は、炭化室１２の幅方向の中心線と、装炭孔の中心軸とを通る面で切断した断面模式図であり、図５〜図８も同じ面で切断した断面模式図である。圧潰強度が１．７ｋＮの成型炭は、装炭孔２２、２６の下における炉底から成型炭上面までの高さＨ１が２．０ｍになるまで装入される。例えば、Ｌ１＝Ｌ５＝２．０ｍとし、Ｌ２＝Ｌ３＝Ｌ４＝４．０ｍとし、すべての成型炭の安息角αを３０°とすると、１回目に装入される圧潰強度が１．７ｋＮの成型炭の装入状態５０は、図４に示す形になる。 First, the result of charging the briquette in the charging pattern 1 will be described. In the charging pattern 1, as the first charging, briquette having a crushing strength of 1.7 kN is charged through the coal charging holes 20 and 24. FIG. 4 is a schematic cross-sectional view of the charging pattern 1 after the first charging. FIG. 4 is a schematic cross-sectional view cut along a plane passing through the center line in the width direction of the carbonization chamber 12 and the central axis of the coal loading hole, and FIGS. 5 to 8 are also schematic cross-sectional views cut on the same plane. .. The briquette with a crushing strength of 1.7 kN is charged until the height H 1 from the bottom of the furnace to the upper surface of the briquette under the coal charging holes 22 and 26 reaches 2.0 m. For example, if L 1 = L 5 = 2.0 m, L 2 = L 3 = L 4 = 4.0 m, and the angle of repose α of all the briquettes is 30 °, the crushing strength to be charged the first time. The charged state 50 of the briquette having a value of 1.7 kN has the shape shown in FIG.
装入パターン１では、２回目の装入として、圧潰強度が１．１ｋＮの成型炭を装炭孔２２、２６から装入する。図５は、装入パターン１における２回目の装入後の断面模式図である。２回目の装入では、圧潰強度が１．１ｋＮの成型炭が、１回目の装入で選択されなかった装炭孔２２、２６から炉底から成型炭上面までの高さＨ２が６．６ｍになるまで装入される。２回目に装入される圧潰強度が１．１ｋＮの成型炭の装入状態５２は、図５に示す形になる。 In the charging pattern 1, as the second charging, briquette having a crushing strength of 1.1 kN is charged through the coal charging holes 22 and 26. FIG. 5 is a schematic cross-sectional view of the charging pattern 1 after the second charging. In the second charging, the briquette having a crushing strength of 1.1 kN has a height H 2 from the bottom of the furnace to the top surface of the briquette from the coal charging holes 22 and 26, which were not selected in the first charging. It is charged until it reaches 6 m. The charged state 52 of the briquette having a crushing strength of 1.1 kN charged for the second time has the shape shown in FIG.
装入パターン１では、３回目の装入として、圧潰強度が１．７ｋＮの成型炭を装炭孔２０、２４から装入する。図６は、装入パターン１における３回目の装入後の断面模式図である。３回目の装入では、圧潰強度が１．７ｋＮの成型炭が、装炭孔２０、２４から炉底から成型炭上面までの高さＨ２が６．６ｍになるまで装入される。３回目に装入される圧潰強度が１．７ｋＮの成型炭の装入状態５４は、図６に示す形になる。図６に示した装入状態５０、５２、５４の面積比から１回目〜３回目の各成型炭の装入比率を算出した。装入比率の結果を表１に示す。 In the charging pattern 1, as the third charging, briquette having a crushing strength of 1.7 kN is charged through the coal charging holes 20 and 24. FIG. 6 is a schematic cross-sectional view of the charging pattern 1 after the third charging. In the third charging, the briquette having a crushing strength of 1.7 kN is charged until the height H 2 from the furnace bottom to the upper surface of the briquette from the coal charging holes 20 and 24 becomes 6.6 m. The charged state 54 of the briquette with a crushing strength of 1.7 kN charged for the third time has the shape shown in FIG. From the area ratios of the charged states 50, 52, and 54 shown in FIG. 6, the charging ratios of the first to third briquettes were calculated. The results of the charging ratio are shown in Table 1.
装入パターン１では、装炭孔２０、２４から装入される圧潰強度が１．７ｋＮの成型炭の装入比率は６２．０質量％となり、装炭孔２２、２６から装入される圧潰強度が１．１ｋＮの成型炭の装入比率は３８．０質量％となった。圧潰強度が１．７ｋＮの成型炭は、落下高さ８．０ｍであっても粉化比率が２０質量％以下になる。一方、圧潰強度が１．１ｋＮの成型炭は、落下高さ８．０ｍでは粉化比率が２０質量％超えとなる成型炭であるが、圧潰強度が１．７ｋＮの成型炭の装入により、落下高さが６．０ｍ以下となった後に装入されるので、装入時の粉化が抑制され、その粉化比率は２０質量％以下になる。 In the charging pattern 1, the charging ratio of the briquette having a crushing strength of 1.7 kN charged through the coal charging holes 20 and 24 is 62.0% by mass, and the crushing charged from the coal charging holes 22 and 26 is crushed. The charging ratio of briquette having a strength of 1.1 kN was 38.0% by mass. Briquette with a crushing strength of 1.7 kN has a pulverization ratio of 20% by mass or less even if the drop height is 8.0 m. On the other hand, the briquette having a crushing strength of 1.1 kN is a briquette having a pulverization ratio of more than 20% by mass at a drop height of 8.0 m. Since the material is charged after the drop height is 6.0 m or less, pulverization at the time of charging is suppressed, and the pulverization ratio is 20% by mass or less.
このように、本実施形態に係る成型炭の装入方法の一例である装入パターン１で成型炭を装入することで、圧潰強度が１．１ｋＮの成型炭を３８．０質量％用いながら、当該成型炭の粉化を抑制し、その粉化比率を２０質量％以下にできる。圧潰強度が１．１ｋＮの成型炭は、圧潰強度が１．７ｋＮの成型炭よりも添加するバインダー量が少なく製造コストが低廉であるので、成型炭の製造コストの増加を抑制しながら、装入時の粉化を抑制でき、成型炭の粉化によるコークスの押出時の負荷増大や乾留不良を抑制できる。また、それぞれの装炭孔から同じ種類の成型炭を装入するので、装炭車に篩や振動機を設ける必要がなく、成型炭の装入コストの上昇も抑制できる。 As described above, by charging the briquette in the charging pattern 1 which is an example of the charging method of the briquette according to the present embodiment, while using 38.0% by mass of the briquette having a crushing strength of 1.1 kN. , The pulverization of the briquette can be suppressed, and the pulverization ratio can be reduced to 20% by mass or less. Briquette with a crushing strength of 1.1 kN has a smaller amount of binder added and lower manufacturing cost than briquette with a crushing strength of 1.7 kN. It is possible to suppress pulverization at the time, and it is possible to suppress an increase in load during extrusion of coke and poor carbonization due to pulverization of briquette. Further, since the same type of briquette is charged from each coal charging hole, it is not necessary to install a sieve or a vibrator in the coal charging vehicle, and an increase in the charging cost of the briquette can be suppressed.
また、このように成型炭を装入することで、炭化室１２に装入される粒径１５ｍｍを超える成型炭の割合を７０質量％以上９５質量％以下にできるので、成型炭の乾留速度が向上しコークスの生産性を向上できる。 Further, by charging the briquette in this way, the proportion of the briquette having a particle size of more than 15 mm charged into the carbonization chamber 12 can be reduced to 70% by mass or more and 95% by mass or less, so that the dry distillation rate of the briquette can be increased. It can be improved and the productivity of coke can be improved.
次に、装入パターン２で成型炭を装入した結果について説明する。装入パターン２では、装入パターン１と同様に、１回目の装入では圧潰強度が１．７ｋＮの成型炭を装炭孔２０、２４から装入する。圧潰強度が１．７ｋＮの成型炭は、装炭孔２２、２６の下における炉底から成型炭上面までの高さＨ１が２．０ｍになるまで装入される。 Next, the result of charging the briquette in the charging pattern 2 will be described. In the charging pattern 2, as in the charging pattern 1, the briquette having a crushing strength of 1.7 kN is charged through the coal charging holes 20 and 24 in the first charging. The briquette with a crushing strength of 1.7 kN is charged until the height H 1 from the bottom of the furnace to the upper surface of the briquette under the coal charging holes 22 and 26 reaches 2.0 m.
次いで、２回目の装入として、圧潰強度が１．７ｋＮの成型炭を継続して装炭孔２０、２４から装入するとともに、圧潰強度が１．１ｋＮの成型炭を装炭孔２２、２６から装入する。圧潰強度が１．７ｋＮの成型炭および圧潰強度が１．１ｋＮの成型炭は、それぞれの装炭孔から炉底から成型炭上面までの高さＨ２が６．６ｍになるまで装入される。 Next, as the second charge, the briquette having a crushing strength of 1.7 kN is continuously charged from the coal charging holes 20 and 24, and the briquette having a crushing strength of 1.1 kN is charged into the coal charging holes 22 and 26. Charge from. Briquette with a crushing strength of 1.7 kN and briquette with a crushing strength of 1.1 kN are charged until the height H 2 from the respective coal charging holes to the top of the molded coal reaches 6.6 m. ..
図７は、装入パターン２における２回目の装入後の断面模式図である。図７において、装入状態５０は、１回目に装入される圧潰強度が１．７ｋＮの成型炭の装入状態を示し、装入状態５６は、２回目に継続して装入される圧潰強度が１．７ｋＮの成型炭の装入状態を示し、装入状態５８は、２回目に装入される圧潰強度が１．１ｋＮの成型炭の装入状態を示す。図７に示した装入状態５０、５６、５８の面積比から１回目〜２回目の各成型炭の装入比率を算出した。装入比率の結果を表２に示す。 FIG. 7 is a schematic cross-sectional view of the charging pattern 2 after the second charging. In FIG. 7, the charging state 50 indicates the charging state of the briquette having a crushing strength of 1.7 kN charged in the first time, and the charging state 56 indicates the charging state in which the briquette is continuously charged in the second time. The charged state of the briquette having a strength of 1.7 kN is shown, and the charged state 58 shows the charged state of the briquette having a crushing strength of 1.1 kN to be charged a second time. From the area ratios of the charged states 50, 56, and 58 shown in FIG. 7, the charging ratios of the first and second briquettes were calculated. Table 2 shows the results of the charging ratio.
装入パターン２において、装炭孔２０、２４から装入される圧潰強度が１．７ｋＮの成型炭の装入比率は６９．０質量％となり、圧潰強度が１．１ｋＮの成型炭の装入比率は３１．０質量％となった。圧潰強度が１．１ｋＮの成型炭は、落下高さ８．０ｍでは粉化比率が２０質量％超えとなる成型炭であるが、圧潰強度が１．７ｋＮの成型炭の装入により、落下高さが６．０ｍ以下となった後に装入されるので、装入時の粉化が抑制され、その粉化比率は２０質量％以下になる。 In the charging pattern 2, the charging ratio of the briquette with a crushing strength of 1.7 kN charged from the coal charging holes 20 and 24 is 69.0% by mass, and the charging of the briquette with a crushing strength of 1.1 kN. The ratio was 31.0% by mass. Briquette with a crushing strength of 1.1 kN is a briquette whose pulverization ratio exceeds 20% by mass at a drop height of 8.0 m, but the drop height is increased by charging briquette with a crushing strength of 1.7 kN. Since the briquette is charged after the thickness is 6.0 m or less, pulverization at the time of charging is suppressed, and the pulverization ratio is 20% by mass or less.
このように、本実施形態に係る成型炭の装入方法の他の例である装入パターン２で成型炭を装入することで、圧潰強度が１．１ｋＮの成型炭を３１．０質量％用いながら、当該成型炭の粉化を抑制し、その粉化比率を２０質量％以下にできる。装入パターン２では、製造コストが低廉な圧潰強度が１．１ｋＮの成型炭の装入比率が装入パターン１よりも低くなる。一方、装入パターン２では、装炭孔２０、２４から継続して圧潰強度が１．７ｋＮの成型炭を装入するので、成型炭の装入時間は、装入パターン１より短くなり生産性が高まることにより成型炭の装入コストは低下する。このため、成型炭の製造コストおよび成型炭の装入コストを比較し、成型炭の製造コストが高い場合は、装入パターン１を選択し、成型炭の装入コストが高い場合は、装入パターン２を選択してよい。 As described above, by charging the briquette in the charging pattern 2 which is another example of the charging method of the briquette according to the present embodiment, the briquette having a crushing strength of 1.1 kN is 31.0% by mass. While using it, it is possible to suppress the pulverization of the briquette and reduce the pulverization ratio to 20% by mass or less. In the charging pattern 2, the charging ratio of the briquette having a crushing strength of 1.1 kN, which is low in manufacturing cost, is lower than that in the charging pattern 1. On the other hand, in the charging pattern 2, the briquette with a crushing strength of 1.7 kN is continuously charged from the coal charging holes 20 and 24, so that the charging time of the briquette is shorter than that of the charging pattern 1 and the productivity is increased. As a result, the cost of charging briquette decreases. Therefore, the manufacturing cost of the briquette and the charging cost of the briquette are compared, and if the manufacturing cost of the briquette is high, the charging pattern 1 is selected, and if the charging cost of the briquette is high, the charging is performed. Pattern 2 may be selected.
次に、装入パターン３で成型炭を装入した結果について説明する。装入パターン３では、１回目の装入として、圧潰強度が１．７ｋＮの成型炭を装炭孔２４から装入する。圧潰強度が１．７ｋＮの成型炭は、装炭孔２２、２６の下における炉底から成型炭上面までの高さＨ１が２．０ｍになるまで装入される。 Next, the result of charging the briquette in the charging pattern 3 will be described. In the charging pattern 3, as the first charging, briquette having a crushing strength of 1.7 kN is charged through the coal charging hole 24. The briquette with a crushing strength of 1.7 kN is charged until the height H 1 from the bottom of the furnace to the upper surface of the briquette under the coal charging holes 22 and 26 reaches 2.0 m.
次いで、２回目の装入として、圧潰強度が１．１ｋＮの成型炭を装炭孔２２、２６から装入する。圧潰強度が１．１ｋＮの成型炭は、装炭孔２２、２６から炉底からの高さＨ２が６．６ｍになるまで装入される。 Next, as the second charging, briquette having a crushing strength of 1.1 kN is charged through the coal charging holes 22 and 26. Briquette with a crushing strength of 1.1 kN is charged from the coal charging holes 22 and 26 until the height H 2 from the furnace bottom reaches 6.6 m.
次いで、３回目の装入として、圧潰強度が０．７ｋＮの成型炭を装炭孔２０から装入し、圧潰強度が１．７ｋＮの成型炭を装炭孔２４から装入する。圧潰強度が０．７ｋＮの成型炭および圧潰強度が１．７ｋＮの成型炭は、それぞれの装炭孔から炉底からの高さＨ２が６．６ｍになるまで装入される。 Next, as the third charging, the briquette having a crushing strength of 0.7 kN is charged from the coal charging hole 20, and the briquette having a crushing strength of 1.7 kN is charged from the coal charging hole 24. The briquette having a crushing strength of 0.7 kN and the briquette having a crushing strength of 1.7 kN are charged from the respective coal charging holes until the height H 2 from the furnace bottom reaches 6.6 m.
装入パターン３では、製造コストがさらに低廉な圧潰強度が０．７ｋＮの成型炭を３回目の装入に用いる。２回目の装入によって、装炭孔２０の下には、炉底から成型炭上面までの高さＨ３が４．３ｍになるまで圧潰強度が１．７ｋＮの成型炭と、圧潰強度が１．１ｋＮの成型炭とが装入されているので、圧潰強度が０．７ｋＮの成型炭を装入しても落下高さは３．７ｍになり、その粉化比率は２０質量％以下になる。 In the charging pattern 3, the briquette having a crushing strength of 0.7 kN, which has a lower manufacturing cost, is used for the third charging. By the second charging, under the Sosumiana 20, and molding coal crushing strength 1.7kN until the height H 3 from the furnace bottom to the molded coal upper surface becomes 4.3 m, crush strength is 1 Since .1 kN of briquette is charged, even if briquette with a crushing strength of 0.7 kN is charged, the drop height will be 3.7 m and the pulverization ratio will be 20% by mass or less. ..
図８は、装入パターン３における３回目の装入後の断面模式図である。図８において、装入状態６０は、１回目に装入される圧潰強度が１．７ｋＮの成型炭の装入状態を示し、装入状態６２は、２回目に装入される圧潰強度が１．１ｋＮの成型炭の装入状態を示す。また、装入状態６４は、３回目に装入される圧潰強度が１．７ｋＮの成型炭の装入状態を示し、装入状態６６は、３回目に装入される圧潰強度が０．７ｋＮの成型炭の装入状態を示す。図８に示した装入状態６０、６２、６４、６６の面積比から１回目〜３回目の各成型炭の装入比率を算出した。装入比率の結果を表３に示す。 FIG. 8 is a schematic cross-sectional view of the charging pattern 3 after the third charging. In FIG. 8, the charging state 60 shows the charging state of the briquette having a crushing strength of 1.7 kN charged in the first time, and the charging state 62 shows the charging strength of the briquette charged in the second time being 1. . Shows the charged state of 1 kN briquette. Further, the charging state 64 indicates a charging state of the briquette having a crushing strength of 1.7 kN charged in the third time, and the charging state 66 indicates a charging state in which the crushing strength charged in the third time is 0.7 kN. Shows the state of briquette charging. From the area ratios of the charged states 60, 62, 64, and 66 shown in FIG. 8, the charging ratios of the first to third briquettes were calculated. The results of the charging ratio are shown in Table 3.
装入パターン３において、装炭孔２４から装入される圧潰強度が１．７ｋＮの成型炭の装入比率は３８．０質量％となり、圧潰強度が１．１ｋＮの成型炭の装入比率は５１．０質量％となり、圧潰強度が０．７ｋＮの成型炭の装入比率は７．０質量％となった。圧潰強度が１．１ｋＮの成型炭および０．７ｋＮの成型炭は、落下高さ８．０ｍでは粉化比率が２０質量％超えとなる成型炭であるが、圧潰強度が１．７ｋＮの成型炭および圧潰強度１．１ｋＮの装入により装入時の粉化が抑制され、その粉化比率を２０質量％以下にできる。 In the charging pattern 3, the charging ratio of the briquette with a crushing strength of 1.7 kN charged from the coal charging hole 24 is 38.0% by mass, and the charging ratio of the briquette with a crushing strength of 1.1 kN is It was 51.0% by mass, and the charging ratio of the briquette having a crushing strength of 0.7 kN was 7.0% by mass. Briquette with a crushing strength of 1.1 kN and briquette with a crushing strength of 0.7 kN are briquettes with a crushing ratio of more than 20% by mass at a drop height of 8.0 m, but briquette with a crushing strength of 1.7 kN. And by charging with a crushing strength of 1.1 kN, pulverization at the time of charging is suppressed, and the pulverization ratio can be reduced to 20% by mass or less.
このように、本実施形態に係る成型炭の装入方法の他の例である装入パターン３で成型炭を装入することで、圧潰強度が１．１ｋＮの成型炭を５１．０質量％、圧潰強度が０．７ｋＮの成型炭を７．０質量％用いながら、これらの成型炭の粉化を抑制できるので、成型炭の製造コストの増加をさらに抑制できることがわかる。 As described above, by charging the briquette according to the charging pattern 3, which is another example of the method for charging the briquette according to the present embodiment, 51.0% by mass of the briquette having a crushing strength of 1.1 kN is obtained. It can be seen that the increase in the production cost of the briquette can be further suppressed because the pulverization of these briquettes can be suppressed while using 7.0% by mass of the briquette having a crushing strength of 0.7 kN.
１０ コークス炉
１２ 炭化室
２０ 装炭孔
２２ 装炭孔
２４ 装炭孔
２６ 装炭孔
３０ 装炭車のホッパー
３２ 装炭車のホッパー
３４ 装炭車のホッパー
３６ 装炭車のホッパー
４０ 試験容器
４２ 開口部
４４ 窓
５０ 装入状態
５２ 装入状態
５４ 装入状態
５６ 装入状態
５８ 装入状態
６０ 装入状態
６２ 装入状態
６４ 装入状態
６６ 装入状態
10 Coke furnace 12 Carbonization chamber 20 Carbonization hole 22 Coal charge hole 24 Coal charge hole 26 Coal charge hole 30 Coal charge car hopper 32 Coal charge car hopper 34 Coal charge car hopper 36 Coal charge car hopper 40 Test container 42 Opening 44 Window 50 Charged state 52 Charged state 54 Charged state 56 Charged state 58 Charged state 60 Charged state 62 Charged state 64 Charged state 66 Charged state
Claims (7)
前記成型炭は、少なくとも第１の成型炭と、前記第１の成型炭よりも強度が低い第２の成型炭とを含み、
前記複数の装炭孔から第１の装炭孔を選択して、選択された前記第１の装炭孔から前記第１の成型炭の装入を開始し、
前記第１の装炭孔として選択されなかった他の装炭孔から第２の装炭孔を選択し、前記第２の装炭孔の下に前記第１の成型炭が装入された後に、選択された前記第２の装炭孔から前記第２の成型炭の装入を開始する、成型炭の装入方法。 It is a method of charging briquette by charging the briquette into the carbonization chamber from a plurality of coal holes provided on the ceiling of the carbonization chamber of the coke oven using a coal wheel.
The briquette contains at least a first briquette and a second briquette having a strength lower than that of the first briquette.
A first briquette hole is selected from the plurality of briquette holes, and charging of the first briquette is started from the selected first briquette hole.
After selecting the second briquette hole from the other briquette holes that were not selected as the first briquette hole and charging the first briquette under the second briquette hole. , A method for charging briquette, which starts charging the second briquette from the selected second coal charging hole.
前記第１の成型炭と前記第２の成型炭は、粒径が１５ｍｍを超える成型炭であり、
前記第１の成型炭は、前記装炭車から前記炭化室の炉底までの落下高さを落下しても粉化比率の目標値よりも粉化比率が低くなる強度を有し、
前記第１の成型炭の装入により、前記他の装炭孔における前記装炭車からの落下高さが、落下高さと粉化比率の関係に基づいて求められた第２の成型炭の粉化比率が目標値となる落下高さより低くなった後に前記第２の成型炭の装入を開始する、請求項１から請求項３のいずれか一項に記載の成型炭の装入方法。 Obtain the relationship between the drop height and the pulverization ratio for each type of briquette.
The first briquette and the second briquette are briquettes having a particle size of more than 15 mm.
The first briquette has a strength that the pulverization ratio becomes lower than the target value of the pulverization ratio even if the drop height from the coal loading wheel to the furnace bottom of the carbonization chamber is dropped.
By charging the first briquette, the drop height from the coal wheel in the other coal holes was determined based on the relationship between the drop height and the pulverization ratio, and the second briquette was pulverized. The method for charging briquette according to any one of claims 1 to 3, wherein the charging of the second briquette is started after the ratio becomes lower than the target drop height.
前記第１の成型炭および前記第２の成型炭は、粒径が１５ｍｍを超える成型炭であり、
前記第１の成型炭は、前記装炭車から前記炭化室の炉底までの高さを落下させた場合に粒径が１５ｍｍ以下となる粉化比率が２０質量％以下となる強度を有し、
前記第２の成型炭は、前記装炭車から前記炭化室の炉底までの高さを落下させた場合に粒径が１５ｍｍ以下となる粉化比率が２０質量％を超える強度を有し、
前記第１の成型炭の装入により、前記他の装炭孔における前記装炭車からの落下高さが、第２の成型炭の粉化比率が２０質量％以下となる落下高さより低くなった後に前記第２の成型炭の装入を開始する、請求項１から請求項３のいずれか一項に記載の成型炭の装入方法。 Obtain the relationship between the drop height and the pulverization ratio for each type of briquette.
The first briquette and the second briquette are briquettes having a particle size of more than 15 mm.
The first briquette has a strength such that the particle size becomes 15 mm or less and the pulverization ratio becomes 20% by mass or less when the height from the coal loading wheel to the furnace bottom of the carbonization chamber is dropped.
The second briquette has a strength of more than 20% by mass in a pulverization ratio in which the particle size is 15 mm or less when the height from the coal loading wheel to the bottom of the carbonization chamber is dropped.
Due to the charging of the first briquette, the drop height from the coal loading wheel at the other coal charging holes is lower than the drop height at which the pulverization ratio of the second briquette is 20% by mass or less. The method for charging briquette according to any one of claims 1 to 3, wherein the charging of the second briquette is started later.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018009407A JP6838570B2 (en) | 2018-01-24 | 2018-01-24 | Briquette charging method and coke manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018009407A JP6838570B2 (en) | 2018-01-24 | 2018-01-24 | Briquette charging method and coke manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2019127523A JP2019127523A (en) | 2019-08-01 |
| JP6838570B2 true JP6838570B2 (en) | 2021-03-03 |
Family
ID=67471905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018009407A Active JP6838570B2 (en) | 2018-01-24 | 2018-01-24 | Briquette charging method and coke manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6838570B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115386390B (en) * | 2022-06-22 | 2024-01-16 | 中南大学 | Petroleum coke calcining process |
-
2018
- 2018-01-24 JP JP2018009407A patent/JP6838570B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019127523A (en) | 2019-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11767482B2 (en) | High-quality coke products | |
| CN103370395B (en) | The method and apparatus that the coal being used for coal coking technique is compacted | |
| JP4879706B2 (en) | Method for producing blast furnace coke | |
| US9701907B2 (en) | Coke manufacturing method | |
| JP6838570B2 (en) | Briquette charging method and coke manufacturing method | |
| JP4896571B2 (en) | Coke coal pretreatment method | |
| JP6575551B2 (en) | Coke production method | |
| JP6583334B2 (en) | Coke production method | |
| JP5320833B2 (en) | Vertical furnace operation method and vertical furnace charging coke in-furnace prevention equipment | |
| EA038126B1 (en) | Method of operating a sinter plant | |
| JP6965907B2 (en) | Coal tower, coal input method and coke manufacturing method | |
| US11111441B2 (en) | Method for producing ferrocoke | |
| CN108753329A (en) | A method of it improving low-order coal coal blending and produces high-strength coke yield | |
| JP6624181B2 (en) | Raw material charging method for coke oven | |
| JP7044999B2 (en) | How to charge raw materials for blast furnace | |
| JP2013256694A (en) | Method for granulating sintering raw material | |
| EA022518B1 (en) | Method of coke producing for non-ferrous metals smelting | |
| JP6269549B2 (en) | Blast furnace operation method | |
| JP5470855B2 (en) | Manufacturing method of ferro-coke for metallurgy | |
| JP5979114B2 (en) | Method for producing sintered ore | |
| JP6562218B2 (en) | Coke oven coal charging method | |
| JP7028210B2 (en) | Manufacturing method of coal tower and coke | |
| JP6992734B2 (en) | Method for manufacturing charcoal interior particles and method for manufacturing charcoal interior sintered ore | |
| KR20200036624A (en) | The assembly for manufacturing sintered ore, sintered ore manufacturing method of using the same, material for manufacturing pig iron, and pig iron manufacturing method of using the same | |
| JP2024051222A (en) | Apparatus and method for producing raw materials for blast furnaces |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20180502 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20180509 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20190327 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190823 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200610 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200714 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200826 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20210112 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210125 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6838570 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |