JP2016130331A - Molten iron physical distribution planning method and apparatus - Google Patents

Molten iron physical distribution planning method and apparatus Download PDF

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JP2016130331A
JP2016130331A JP2015003876A JP2015003876A JP2016130331A JP 2016130331 A JP2016130331 A JP 2016130331A JP 2015003876 A JP2015003876 A JP 2015003876A JP 2015003876 A JP2015003876 A JP 2015003876A JP 2016130331 A JP2016130331 A JP 2016130331A
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hot metal
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transport container
ratio
facility
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JP6191629B2 (en
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佳也 橋本
Yoshiya Hashimoto
佳也 橋本
吉成　有介
Yuusuke Yoshinari
有介 吉成
一浩 中辻
Kazuhiro Nakatsuji
一浩 中辻
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JFE Steel Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

PROBLEM TO BE SOLVED: To perform scheduling of a molten iron physical distribution with a high pretreatment ratio.SOLUTION: There are included: generating candidates of the combinations of torpedo car pairs for loading molten iron, as a pair of pretreatment objects in a pretreatment facility (step S1); generating a passing process which each torpedo car can adopt, as candidates of routes shown by a permutation of treatments including movement (step S2); and, as for the candidates of the routes, solving a mathematical optimization problem so as to maximize a pretreatment ratio while satisfying a limitation on a competition of the pretreatment facility and a limitation on an integrated quantity of a molten iron quantity required in a fixed period in each steel mill and on an integrated quantity of a molten iron quantity after pretreatment, and selecting a candidate having the highest pretreatment ratio in the candidates of the routes and the candidates of the combinations of pairs so as to create a molten iron physical distribution planning in which a steel mill for each torpedo car of the pair, whether a pretreatment is performed or not for molten iron in each torpedo car, and a pretreatment facility to be used are each determined (step S3).SELECTED DRAWING: Figure 3

Description

本発明は、製鉄所において高炉から製鋼工場の間に溶銑の予備処理を実施する溶銑物流操業を最適化する溶銑物流計画方法および溶銑物流計画装置に関する。   The present invention relates to a hot metal distribution planning method and a hot metal distribution planning apparatus for optimizing hot metal distribution operation in which hot metal pretreatment is performed between a blast furnace and a steelmaking factory in an ironworks.

一般に、製鉄所の高炉から製鋼工場の間で、溶銑は溶銑輸送容器として、例えばトピードカー（ＴＰ）に入れられて運搬される。溶銑は、ＴＰにより高炉から製鋼工場へ運搬される間には、途中に設置された予備処理設備で予備処理（脱リン処理）が行われリン濃度が半減する。製鋼工場で空になったＴＰは高炉へと搬送される。なお、予備処理は、時間に余裕がある場合に実施される。ＴＰは、溶銑に予備処理で成分調整が行われる場合に予備処理設備を経由し、予備処理が行われない場合には製鋼工場に直送される。   In general, hot metal is transported as a hot metal transport container, for example, in a topped car (TP) between a blast furnace at a steel works and a steelmaking factory. While the hot metal is transported from the blast furnace to the steel factory by TP, pretreatment (dephosphorization treatment) is performed by a pretreatment facility installed on the way, and the phosphorus concentration is reduced by half. The TP emptied at the steelmaking factory is transported to the blast furnace. Preliminary processing is performed when there is time to spare. TP passes through a pretreatment facility when component adjustment is performed on the hot metal in the pretreatment, and is sent directly to the steelmaking factory when the pretreatment is not performed.

通常の操業時、溶銑入りの盈車として運用されるＴＰは、ディーゼルで運搬される。また、複数の予備処理設備のそれぞれには、１つまたは２つのステーションが存在し、各ステーションでは２つのＴＰの溶銑に対して同時に予備処理を実施できる。ただし、単一のＴＰの溶銑に対する予備処理を実施中には、その処理が終了してＴＰが搬出されるまで、この予備処理設備では新たなＴＰの溶銑に対する予備処理を開始することはできない。   During normal operation, the TP operated as a hot car with hot metal is carried by diesel. Each of the plurality of preliminary processing facilities has one or two stations, and each station can perform preliminary processing on two TP hot metal simultaneously. However, during the preliminary process for a single TP hot metal, the preliminary process for the new TP hot metal cannot be started in the preliminary processing facility until the process is completed and the TP is unloaded.

このような溶銑物流操業は、複数の管理部門（溶銑ＨＱ、鉄道ＨＱ、原料ＨＱ）により実施されている。溶銑ＨＱは、各製鋼工場における生産計画に基づき製鋼に遅滞なく連続的に溶銑を供給するように、各ＴＰの向け先の製鋼工場を決定する。また、溶銑ＨＱは、各溶鋼鍋（ＣＨ）の成分制約を考慮した上で、各ＴＰの向け先製鋼工場や予備処理を行うか否か（予備処理有無）を決定する。鉄道ＨＱは、溶銑ＨＱの決定を受けて、各ディーゼル運転員に対し、どのＴＰをどこまで運搬するのかを指示する。原料ＨＱは、ＴＰが製鋼工場に到着し次第、各ＣＨの成分制約を満たすように、複数のＴＰからの成分の異なる溶銑をＣＨに分配し混合する。   Such hot metal logistics operations are carried out by a plurality of management departments (hot metal HQ, railway HQ, raw material HQ). The hot metal HQ determines the steelmaking factory to which each TP is directed so as to continuously supply hot metal to steelmaking without delay based on the production plan at each steelmaking factory. In addition, the hot metal HQ determines whether or not to perform a destination steelmaking factory or preliminary treatment for each TP (presence or absence of preliminary treatment) in consideration of the component restrictions of each molten steel pan (CH). The railway HQ receives the determination of the hot metal HQ, and instructs each diesel operator which TP is to be transported to where. As soon as the TP arrives at the steelmaking plant, the raw material HQ distributes and mixes hot metal having different components from a plurality of TPs to the CH so as to satisfy the component constraints of each CH.

上記のように、溶銑物流操業はオペレータによりマニュアルで実施されており、各工程のリードタイムや設備の競合（設備干渉）は、オペレータの主観的な予測に基づいて決定あるいは判断されている。そのため、本来ならば予備処理設備で予備処理を行うことができたＴＰの溶銑を、時間に余裕がないものとして製鋼工場に直送してしまう場合があり、予備処理設備を経由するＴＰ数の全ＴＰ数に対する割合である予備処理比率が低下する。そうすると、成分制約の厳しいＣＨへ分配できる溶銑が不足して、全体として溶銑物流の効率が低下してしまう。   As described above, the hot metal logistics operation is performed manually by an operator, and the lead time of each process and the competition of equipment (equipment interference) are determined or determined based on the subjective prediction of the operator. For this reason, the TP hot metal that could be pre-treated in the pre-treatment facility may be sent directly to the steelmaking plant as having no time, and the total number of TPs passing through the pre-treatment facility may be reduced. The pretreatment ratio, which is a ratio with respect to the number of TPs, decreases. If it does so, the hot metal which can be distributed to CH with severe component restrictions will run short, and the efficiency of hot metal distribution will fall as a whole.

そこで、数理最適化により溶銑物流の効率を改善するために、例えば、特許文献１には、ＴＰの溶銑の各ＣＨへの分配（引当て）量、各ＴＰの予備処理を行うか否かを決定するアルゴリズムが開示されている。また、特許文献２には、各製鋼工場の要求成分量、要求成分および要求時刻からスケジュールを逆算し、各ＴＰの溶銑に対していつまでに予備処理を行うべきであるかを決定する、物流シミュレーションに基づくアルゴリズムが開示されている。   Therefore, in order to improve the efficiency of hot metal distribution by mathematical optimization, for example, Patent Document 1 describes the distribution (allocation) amount of TP hot metal to each CH and whether or not to perform preliminary processing of each TP. An algorithm for determining is disclosed. Further, Patent Document 2 discloses a physical distribution simulation in which the schedule is calculated backward from the required component amount, required component, and required time of each steelmaking factory, and by which time pretreatment should be performed for the hot metal of each TP. An algorithm based on is disclosed.

特開２００４−８３９６３号公報JP 2004-83963 A 特開平０９−２４９９０３号公報JP 09-249903 A

本来、ＴＰは、高炉と製鋼工場との間に潤沢に存在し、予備処理を実施するだけの時間的余裕がある場合にのみ予備処理設備を経由できる。したがって、いつ、各ＴＰが予備処理設備に到着し、各ＴＰの溶銑の予備処理が終了し、各ＴＰが製鋼工場に向けて予備処理設備を出発するかというＴＰのスケジューリング問題と、各ＴＰの溶銑をどれだけ各ＣＨに分配するかというＣＨの溶銑分配問題とは、不可分の問題である。すなわち、ＴＰのスケジューリング問題とＣＨの溶銑分配問題とは、同時に最適化を行うべき問題である。実際に、各ＴＰの向け先製鋼工場および予備処理有無を決定する溶銑ＨＱは、各ＴＰの溶銑の各ＣＨへの分配量を決定する原料ＨＱ、および各ＴＰを牽引するディーゼルの運行を統括している鉄道ＨＱと、密に連絡を取り合いながら操業を行っている。   Originally, TP exists abundantly between the blast furnace and the steelmaking factory, and can pass through the pretreatment facility only when there is enough time to perform the pretreatment. Therefore, when each TP arrives at the pretreatment facility, the pretreatment of the hot metal of each TP is completed, and the TP scheduling problem of when each TP leaves the pretreatment facility toward the steel factory, The CH hot metal distribution problem of how much hot metal is distributed to each CH is an inseparable problem. That is, the TP scheduling problem and the CH hot metal distribution problem are problems to be optimized simultaneously. Actually, the hot steel HQ that determines the steelmaking factory for each TP and the presence or absence of preliminary treatment controls the raw material HQ that determines the distribution amount of the hot metal of each TP to each CH and the operation of the diesel that pulls each TP. It operates while keeping close contact with the railway HQ.

しかしながら、特許文献１記載の技術では、いつ、各ＴＰが予備処理設備に到着し、このＴＰの溶銑の予備処理が終了し、ＴＰが製鋼工場に向けて予備処理設備を出発するかというＴＰのスケジュールを決定できない。   However, according to the technique described in Patent Document 1, when each TP arrives at the pretreatment facility, the pretreatment of the molten iron of TP is completed, and the TP starts the pretreatment facility toward the steel factory. The schedule cannot be determined.

また、特許文献２記載の技術では、スケジュール通りに高炉で溶銑の出銑が行われ、スケジュール通りに盈車が得られることが前提とされている。そのため、大まかなスケジューリングのアルゴリズムとしては有効であるが、出銑速度の変化等の外乱の下でのオンラインのスケジューリングのアルゴリズムとしては不十分である。実際に、盈車数は高炉での出銑速度に依存し、時間に余裕がある場合にのみ予備処理設備を経由させることが可能であるため、溶銑ＨＱは、状況に応じた柔軟な判断が求められる。したがって、直近の盈車数等の操業実績値を反映できる最適化アルゴリズムの開発が期待されている。   Moreover, in the technique of patent document 2, hot metal extraction is performed in a blast furnace according to a schedule, and it is presupposed that a cart is obtained according to a schedule. Therefore, although it is effective as a rough scheduling algorithm, it is insufficient as an online scheduling algorithm under disturbances such as changes in the output speed. Actually, the number of spears depends on the output speed in the blast furnace, and it is possible to pass through the pretreatment equipment only when there is time, so the hot metal HQ can be determined flexibly according to the situation. Desired. Therefore, it is expected to develop an optimization algorithm that can reflect the operation results such as the latest number of vehicles.

本発明は、上記課題に鑑みてなされたものであって、予備処理比率の高い溶銑物流のスケジューリングを行うことができる溶銑物流計画方法および溶銑物流計画装置を提供することを目的とする。   The present invention has been made in view of the above problems, and an object thereof is to provide a hot metal distribution planning method and a hot metal distribution planning apparatus capable of scheduling hot metal distribution with a high pretreatment ratio.

上記課題を解決し、目的を達成するために、本発明に係る溶銑物流計画方法は、高炉と製鋼工場との間に溶銑の予備処理設備が設置されている製鉄所内における溶銑物流計画を作成する溶銑物流計画方法であって、前記予備処理設備においてペアで予備処理の対象とされる溶銑を積載する溶銑輸送容器のペアの組み合わせの候補を生成するステップと、前記各溶銑輸送容器の採り得る通過工程を、移動を含む処理の順列で表されたルートの候補として生成するステップと、前記ルートの候補について、前記予備処理設備の競合に関する制約と、前記各製鋼工場での一定期間内に要求される溶銑量の積算量および予備処理後溶銑量の積算量に関する制約とを満たしつつ、全溶銑輸送容器のうち予備処理が実施される溶銑輸送容器の比率である予備処理比率を最大化するように数理最適化問題を解くことにより、該ルートの候補および前記ペアの組み合わせの候補のうち、該予備処理比率が最も高いものを選択して、当該ペアの前記各溶銑輸送容器の向け先の製鋼工場、該各トピードカーの溶銑に対して予備処理を行うか否か、および使用する前記予備処理設備が決定した溶銑物流計画を作成するステップと、を含むことを特徴とする。   In order to solve the above problems and achieve the object, the hot metal logistics planning method according to the present invention creates a hot metal logistics plan in an ironworks where a hot metal pretreatment facility is installed between a blast furnace and a steelmaking factory. A hot metal distribution planning method, comprising: generating a candidate combination of hot metal transport container pairs loaded with hot metal to be pretreated in pairs in the pretreatment facility; and possible passage of each hot metal transport container Generating a process as a route candidate represented by a process permutation including movement, the route candidate, restrictions on competition of the preliminary processing equipment, and required within a certain period of time at each steelmaking plant. The ratio of the hot metal transport container in which the pretreatment is performed among all the hot metal transport containers while satisfying the restrictions on the cumulative amount of hot metal and the cumulative amount of hot metal after pretreatment. By solving the mathematical optimization problem so as to maximize the processing ratio, the candidate having the highest preliminary processing ratio is selected from the candidates for the route and the combinations of the pair, and the hot metal of the pair is selected. And a step of creating a hot metal distribution plan determined by the pretreatment facility to be used, and whether or not to perform pretreatment on the hot metal of each topped car, and To do.

また、本発明に係る溶銑物流計画方法は、上記発明において、所定期間Ａ内に発生する溶銑を積載する溶銑輸送容器を対象として前記溶銑物流計画を作成した後、当該所定期間Ａ内の最初の所定期間Ｂについて発生する溶銑を積載する溶銑輸送容器について、作成された前記溶銑物流計画を既定とするとともに、前記所定期間Ａの時間枠を該所定期間Ｂだけ後にずらした期間に発生する溶銑を積載する溶銑輸送容器を対象として、前記溶銑物流計画を作成することを特徴とする。   In the hot metal distribution planning method according to the present invention, in the above invention, the hot metal distribution plan for the hot metal transport container loaded with the hot metal generated within the predetermined period A is created, and then the first hot metal distribution plan within the predetermined period A is used. For the hot metal transport container for loading the hot metal generated during the predetermined period B, the hot metal distribution plan created is set as a default, and the hot metal generated during a period in which the time frame of the predetermined period A is shifted by the predetermined period B is used. The hot metal distribution plan is created for the hot metal transport container to be loaded.

また、本発明に係る溶銑物流計画装置は、高炉と製鋼工場との間に溶銑の予備処理設備が設置されている製鉄所内における溶銑物流計画を作成する溶銑物流計画装置であって、前記予備処理設備においてペアで予備処理の対象とされる溶銑を積載する溶銑輸送容器のペアの組み合わせの候補を生成する手段と、前記各溶銑輸送容器の採り得る通過工程を、移動を含む処理の順列で表されたルートの候補として生成する手段と、前記ルートの候補について、前記予備処理設備の競合に関する制約と、前記各製鋼工場での一定期間内に要求される溶銑量の積算量および予備処理後溶銑量の積算量に関する制約とを満たしつつ、全溶銑輸送容器のうち予備処理が実施される溶銑輸送容器の比率である予備処理比率を最大化するように数理最適化問題を解くことにより、該ルートの候補および前記ペアの組み合わせの候補のうち、該予備処理比率が最も高いものを選択して、当該ペアの前記各溶銑輸送容器の向け先の製鋼工場、該各溶銑輸送容器の溶銑に対して予備処理を行うか否か、および使用する前記予備処理設備が決定した溶銑物流計画を作成する手段と、を備えることを特徴とする。   The hot metal distribution planning apparatus according to the present invention is a hot metal distribution planning apparatus for creating a hot metal distribution plan in an ironworks where a hot metal pretreatment facility is installed between a blast furnace and a steelmaking factory, The means for generating a combination of hot metal transport container pairs for loading the hot metal to be pretreated in pairs in the facility, and the passing steps that can be taken by each of the hot metal transport containers are represented in a permutation of processing including movement. A means for generating the route candidate, restrictions on the competition of the pretreatment facility, the accumulated amount of hot metal required within a certain period in each steelmaking factory, and the hot metal after pretreatment Mathematical optimization problem to maximize the pretreatment ratio, which is the ratio of the hot metal transport containers to which pretreatment is carried out, while satisfying the restrictions on the accumulated quantity By solving, the one with the highest pretreatment ratio among the route candidates and the pair combination candidates is selected, and the steelmaking factory to which each hot metal transport container of the pair is directed, each hot metal transport And a means for creating a hot metal distribution plan determined by the pretreatment equipment to be used, and whether or not to perform pretreatment on the hot metal in the container.

本発明に係る溶銑物流計画方法および溶銑物流計画装置によれば、予備処理比率の高い溶銑物流のスケジューリングを行うことができる。   According to the hot metal distribution planning method and hot metal distribution planning apparatus according to the present invention, hot metal distribution having a high pretreatment ratio can be scheduled.

図１は、本発明の一実施形態である溶銑物流計画処理の対象の溶銑物流に関する設備の配置を例示する模式図である。FIG. 1 is a schematic view illustrating an arrangement of facilities related to hot metal distribution targeted for hot metal distribution planning processing according to an embodiment of the present invention. 図２は、本発明の一実施形態である溶銑物流計画装置の構成を示すブロック図である。FIG. 2 is a block diagram showing a configuration of a hot metal distribution planning apparatus according to an embodiment of the present invention. 図３は、本実施の形態の溶銑物流計画処理の流れを示すフローチャートである。FIG. 3 is a flowchart showing the flow of hot metal distribution planning processing according to the present embodiment. 図４は、ＴＰの採り得るルートを説明するための説明図である。FIG. 4 is an explanatory diagram for explaining routes that can be taken by the TP. 図５は、ＴＰ、Ｐａｔｔｅｒｎ、Ｊｏｂの関係を示す概念図である。FIG. 5 is a conceptual diagram showing the relationship between TP, Pattern, and Job. 図６は、本実施の形態の溶銑物流計画処理の概要を説明するための説明図である。FIG. 6 is an explanatory diagram for explaining the outline of the hot metal distribution planning process of the present embodiment. 図７は、時間制約および成分制約を満たすための手順を説明するための説明図である。FIG. 7 is an explanatory diagram for explaining a procedure for satisfying the time constraint and the component constraint. 図８は、時間枠を限定しながら溶銑物流計画処理を進める手順を説明するための説明図である。FIG. 8 is an explanatory diagram for explaining a procedure for advancing the hot metal distribution planning process while limiting the time frame. 図９は、本実施例の溶銑物流計画を示すガントチャートである。FIG. 9 is a Gantt chart showing the hot metal distribution plan of this example. 図１０は、本実施例の溶銑物流計画を示すガントチャートである。FIG. 10 is a Gantt chart showing the hot metal distribution plan of this embodiment.

以下、図面を参照して、本発明の一実施形態である溶銑物流計画装置による溶銑物流計画処理について説明する。なお、この実施の形態により本発明が限定されるものではない。   Hereinafter, with reference to the drawings, hot metal distribution planning processing by the hot metal distribution planning apparatus according to an embodiment of the present invention will be described. In addition, this invention is not limited by this embodiment.

〔溶銑物流の設備〕
はじめに、図１を参照して、本発明の一実施形態である溶銑物流計画処理により作成される溶銑物流計画の対象である溶銑物流に関わる設備の配置について説明する。図１に例示する製鉄所には、３つの高炉（１高炉〜３高炉）と２つの製鋼工場（１製鋼、２製鋼）との間に、２つの予備処理設備（予備処理設備１、予備処理設備２）が配置されている。このうち予備処理設備１には２つのステーション（予備処理設備１−１、予備処理設備１−２）が配置され、予備処理設備２には１つのステーションが配置されている。また、予備処理設備１の両隣には、除滓設備（前除滓、後除滓）が配置されている。 [Hot metal logistics equipment]
First, with reference to FIG. 1, an arrangement of equipment related to hot metal distribution that is a target of the hot metal distribution plan created by the hot metal distribution planning process according to an embodiment of the present invention will be described. The steel works illustrated in FIG. 1 have two pretreatment facilities (pretreatment facilities 1, pretreatment) between three blast furnaces (1 blast furnace to 3 blast furnaces) and two steel mills (1 steel making, 2 steel making). Equipment 2) is arranged. Among these, the pretreatment facility 1 has two stations (the pretreatment facility 1-1 and the pretreatment facility 1-2), and the pretreatment facility 2 has one station. Further, on both sides of the pretreatment facility 1, removal equipment (front removal and rear removal) is arranged.

通常の操業時、いずれかの高炉（ＢＦ）で産出された溶銑は、溶銑輸送容器として、ＴＰにより受銑され、いずれかの製鋼工場（１製鋼、２製鋼）へ運搬される。ＴＰは、例えば４０台程度のうち２５台程度が溶銑入りの盈車として運用される。これらのＴＰは１０台程度のディーゼルで運搬される。   During normal operation, the hot metal produced in one of the blast furnaces (BF) is received by the TP as a hot metal transport container and transported to one of the steelmaking plants (1 steelmaking, 2 steelmaking). For example, about 40 of about 40 TPs are operated as a cast iron containing hot metal. These TPs are transported by about 10 diesels.

溶銑に予備処理により成分調整が行なわれる場合には、ＴＰが予備処理設備を経由して、ＴＰの溶銑に対して予備処理が実施され、溶銑のリン濃度が半減する。予備処理設備の各ステーションでは、２つのＴＰの溶銑に対して同時に予備処理を実施できる。ただし、単一のＴＰの溶銑に対する予備処理の実施中には、その処理が終了してＴＰが搬出されるまで、この予備処理設備では新たなＴＰの溶銑に対する予備処理を開始することはできない。なお、ＴＰは、予備処理設備１を経由する場合には、その前後に前除滓および／または後除滓を経由する。一方、溶銑に予備処理が行われない場合には、ＴＰは製鋼工場に直送される。   When the component adjustment is performed on the hot metal by the pretreatment, the pretreatment is performed on the hot metal of TP via the pretreatment facility, and the phosphorus concentration of the hot metal is reduced by half. At each station of the pretreatment facility, pretreatment can be performed simultaneously on two TP hot metal. However, during the preliminary processing for a single TP hot metal, the preliminary processing equipment cannot start the preliminary processing for a new TP hot metal until the processing is completed and the TP is carried out. When the TP passes through the pretreatment facility 1, the TP passes before and / or after the front and rear removals. On the other hand, when the pretreatment is not performed on the hot metal, TP is sent directly to the steelmaking factory.

〔溶銑物流計画装置の構成〕
次に、図２を参照して、本発明の一実施形態である溶銑物流計画装置の構成について説明する。図２は、本発明の一実施形態である溶銑物流計画装置の構成を示すブロック図である。図２に示すように、本発明の一実施形態である溶銑物流計画装置１は、ワークステーションやパーソナルコンピュータ等の情報処理装置１０で実現され、電源スイッチおよび入力キーなどの入力デバイスである入力部２０、表示装置や印刷装置等の出力部３０を備える。この溶銑物流計画装置１は、情報処理装置１０内部のＣＰＵ等の演算処理装置がメモリに記憶された制御プログラムを実行することによって、ペア生成部１１、ルート生成部１２、最適化部１３として機能する。これら各部の機能については後述する。 [Configuration of hot metal logistics planning equipment]
Next, with reference to FIG. 2, the structure of the hot metal physical distribution planning apparatus which is one embodiment of the present invention will be described. FIG. 2 is a block diagram showing a configuration of a hot metal distribution planning apparatus according to an embodiment of the present invention. As shown in FIG. 2, a hot metal distribution planning apparatus 1 according to an embodiment of the present invention is realized by an information processing apparatus 10 such as a workstation or a personal computer, and is an input unit that is an input device such as a power switch and an input key. 20. An output unit 30 such as a display device or a printing device is provided. The hot metal distribution planning device 1 functions as a pair generation unit 11, a route generation unit 12, and an optimization unit 13 by an arithmetic processing device such as a CPU in the information processing device 10 executing a control program stored in a memory. To do. The functions of these units will be described later.

なお、本実施の形態では、制御プログラムをＣＰ（Constraint Programming）を用いて実装する。また、溶銑物流計画装置１には、図示しない上位システムがＬＡＮやインターネットなどの電気通信回線を介してデータ通信可能に接続される。溶銑物流計画装置１は、上位システムから各種の操業実績値を取得する。   In the present embodiment, the control program is implemented using CP (Constraint Programming). The hot metal distribution planning apparatus 1 is connected to a host system (not shown) via a telecommunication line such as a LAN or the Internet so that data communication is possible. The hot metal distribution planning device 1 acquires various operation result values from the host system.

〔物流計画作成処理〕
このような構成を有する溶銑物流計画装置１では、情報処理装置１０が以下に示す溶銑物流計画処理を実行する。これにより、各溶鋼鍋（ＣＨ）で要求される溶銑到着時刻、各ＣＨの目標成分、予備処理設備の競合制約等の溶銑ＨＱが考慮する操業制約を満たしつつ、予備処理比率が最大となるように、各ＴＰについての向け先製鋼工場、予備処理有無、および使用する予備処理設備等の変数が決定された溶銑物流計画が作成される。 [Logistics planning process]
In the hot metal distribution planning apparatus 1 having such a configuration, the information processing apparatus 10 executes the hot metal distribution planning process shown below. As a result, the pretreatment ratio is maximized while satisfying the operation restrictions considered by the hot metal HQ such as the hot metal arrival time required for each hot metal ladle (CH), the target component of each CH, and the competition restriction of the pretreatment equipment. In addition, a hot metal distribution plan in which variables such as the destination steel factory, the presence / absence of preliminary processing, and the preliminary processing equipment to be used are determined for each TP is created.

以下、図３に示すフローチャートを参照して、この溶銑物流計画処理を実行する際の情報処理装置１０の動作について説明する。図３に示すフローチャートは、例えば、操作者による起動の指示入力があったタイミングで処理が開始され、溶銑物流計画処理はステップＳ１の処理に進む。   Hereinafter, with reference to the flowchart shown in FIG. 3, the operation of the information processing apparatus 10 when this hot metal distribution planning process is executed will be described. In the flowchart shown in FIG. 3, for example, the process is started at the timing when the operator inputs a start instruction, and the hot metal distribution planning process proceeds to the process of step S1.

ステップＳ１の処理では、ペア生成部１１が、高炉で発生する盈車（ＴＰ）を、例えば直近６時間の発生頻度の実績値に基づいて、以降も同じ頻度で発生するものとして予測して、同時に予備処理設備での予備処理対象とするＴＰのペアの組み合わせの候補を生成（列挙）する。その際、ペア生成部１１は、次の操業制約を満たすＴＰのペアの組み合わせを全て列挙する。   In the process of step S1, the pair generation unit 11 predicts that the train (TP) generated in the blast furnace is generated at the same frequency thereafter, based on, for example, the actual value of the frequency of occurrence in the latest 6 hours, At the same time, candidate combinations of TP pairs to be subjected to preliminary processing in the preliminary processing facility are generated (enumerated). In that case, the pair production | generation part 11 enumerates all the combinations of the pair of TP which satisfy | fills the following operation restrictions.

同一の高炉で５０分以下の時間間隔で発生するＴＰ同士をペアとする。同一の高炉のＴＰとするのは、異なる高炉のＴＰでは、ＴＰを牽引するディーゼルの移動時間に無駄が生じるためである。また、製鋼工場での要求時刻がひっ迫している場合を除き、単一ＴＰの溶銑に対する予備処理の実施を防止するため、可能な限り多数のＴＰのペアを生成する。そのため、時間的に隣接して発生し、その時間間隔が５０分以下のＴＰをペアとする。これにより、ステップＳ１の処理は完了し、溶銑物流計画処理はステップＳ２の処理に進む。   A pair of TPs generated in the same blast furnace at a time interval of 50 minutes or less is paired. The reason why the TPs of the same blast furnace are used is that, in the TPs of different blast furnaces, the travel time of diesel that pulls the TP is wasted. In addition, unless the required time at the steel factory is tight, as many TP pairs as possible are generated in order to prevent the pretreatment of the molten iron of a single TP. Therefore, a pair of TPs that are adjacent in time and whose time interval is 50 minutes or less is paired. Thereby, the process of step S1 is completed and the hot metal distribution planning process proceeds to the process of step S2.

ステップＳ２の処理では、ルート生成部１２が、各ＴＰの採り得るルートの候補を生成する。ここで、図４を参照して、各ＴＰの採り得るルートについて説明する。図４に示すように、各ＴＰの高炉から製鋼工場までに採り得るルートは、７つに分類される。各ルートについて、工程を分割し、移動を含む各処理をＪｏｂと定義し、Ｊｏｂの順列で表される各ルートをＰａｔｔｅｒｎと定義する。例えば、ルート１は、高炉から前除滓への移動（Ｊｏｂ１）、前除滓での処理（Ｊｏｂ２）、前除滓から予備処理設備１−１への移動（待ち時間を含む）（Ｊｏｂ３）、予備処理設備１−１での処理（Ｊｏｂ４）、予備処理設備１−１から１製鋼への移動（Ｊｏｂ５）、および１製鋼での溶鋼鍋への払い出し（Ｊｏｂ６）の６つのＪｏｂの順列からなるＰａｔｔｅｒｎで表される。これにより、ステップＳ２の処理は完了し、溶銑物流計画処理はステップＳ３の処理に進む。   In the process of step S2, the route generation unit 12 generates route candidates that each TP can take. Here, with reference to FIG. 4, the route which each TP can take is demonstrated. As shown in FIG. 4, the routes that can be taken from the blast furnace of each TP to the steelmaking plant are classified into seven. For each route, the process is divided, each process including movement is defined as Job, and each route represented by Job permutation is defined as Pattern. For example, route 1 moves from the blast furnace to the previous removal (Job 1), treatment in the previous removal (Job 2), and movement from the previous removal to the pretreatment facility 1-1 (including the waiting time) (Job 3). From the permutation of the six jobs: processing in the pretreatment facility 1-1 (Job 4), movement from the pretreatment facility 1-1 to one steelmaking (Job5), and dispensing to the molten steel pan in one steelmaking (Job6) It is expressed by Pattern. Thereby, the process of step S2 is completed and the hot metal distribution planning process proceeds to the process of step S3.

なお、図１のレイアウト上では、除滓設備として前除滓および後除滓を図示したが、予備処理設備を通過した場合は必ず後除滓を通過するため、本実施形態では予備処理設備から製鋼工場への移動所要時間に後除滓での処理所要時間を含め、後除滓についての計画を陽には解かないという簡略化を行った。   In the layout of FIG. 1, pre-removal and post-removal are shown as the dehulling equipment. However, when the pre-removing equipment is passed, the post-removal is always passed. Including the time required for post-removal treatment in the time required to move to the steelmaking factory, the plan for post-removal was not solved explicitly.

ここで、図５はＴＰ、Ｐａｔｔｅｒｎ、Ｊｏｂの関係を示す概念図である。図５に示すように、ＰａｔｔｅｒｎとはＴＰの通過工程に相当し、Ｊｏｂとは各通過工程を構成するプロセスに相当する。各ＴＰについてそれぞれ複数のＪｏｂで構成される複数のＰａｔｔｅｒｎのうちの１つが選択されると、各ＴＰのルートの１つが選択され、向け先製鋼工場、予備処理有無、および使用する予備処理設備等の変数が決定する。   Here, FIG. 5 is a conceptual diagram showing the relationship between TP, Pattern, and Job. As shown in FIG. 5, “Pattern” corresponds to a passing process of TP, and “Job” corresponds to a process constituting each passing process. When one of a plurality of Patterns each composed of a plurality of jobs is selected for each TP, one of the routes of each TP is selected, the destination steel factory, the presence / absence of preliminary processing, and the preliminary processing equipment to be used, etc. The variables are determined.

ステップＳ３の処理では、最適化部１３が、ステップＳ１の処理で生成されたＴＰのペアの組み合わせの候補と、ステップＳ２の処理で生成された各ＴＰの採り得るルートの候補との中から、予備処理比率が高いものを採用する。具体的に、図６に処理の概要を示すように、最適化部１３は、各ＴＰのルートの候補の中から、設備干渉、時間制約、成分制約等の制約条件を満たしつつ、予備処理比率を評価する評価関数の値が最適値（最大値）となるように、ＴＰのペアの組み合わせとルートとを選択する。   In the process of step S3, the optimization unit 13 selects a candidate for the combination of TP pairs generated in the process of step S1 and a candidate route for each TP generated in the process of step S2. Use a high pretreatment ratio. Specifically, as shown in the outline of the processing in FIG. 6, the optimization unit 13 satisfies the constraint conditions such as the equipment interference, the time constraint, and the component constraint among the candidate routes of each TP, while maintaining the preliminary processing ratio. The combination of TP pairs and the root are selected so that the value of the evaluation function that evaluates is the optimum value (maximum value).

このとき、最適化部１３は、併せて各Ｊｏｂの開始時刻と終了時刻とを決定する。また、最適化部１３は、実績値に基づいて、各工程のリードタイムとＴＰ（盈車）の発生時刻とを設定する。   At this time, the optimization unit 13 also determines the start time and end time of each job. Further, the optimization unit 13 sets the lead time of each process and the generation time of TP (car train) based on the actual value.

これにより、最適化部１３が、向け先製鋼工場、予備処理有無、予備処理設備等の変数を決定して、溶銑物流計画を最適化する。これにより、ステップＳ３の処理は完了し、溶銑物流計画処理は、ステップＳ４の処理に進む。   Thereby, the optimization part 13 determines variables, such as a destination steelmaking factory, the presence or absence of preliminary processing, and preliminary processing equipment, and optimizes a hot metal distribution plan. Thereby, the process of step S3 is completed and the hot metal distribution planning process proceeds to the process of step S4.

ステップＳ４の処理では、出力部３０が、最適化された溶銑物流計画を適宜形式で出力する。これにより、ステップＳ４の処理は完了し、一連の溶銑物流計画処理は終了する。   In the process of step S4, the output unit 30 outputs the optimized hot metal distribution plan in an appropriate format. Thereby, the process of step S4 is completed and a series of hot metal physical distribution plan processes are complete | finished.

以下、ステップＳ３の処理における制約条件および評価関数について、具体的に説明する。   Hereinafter, the constraint condition and the evaluation function in the process of step S3 will be specifically described.

〔制約条件〕
最適化部１３は、各ＴＰのＰａｔｔｅｒｎを選択する際、以下に例示する制約条件を考慮する。 [Restrictions]
The optimization unit 13 considers the constraint conditions exemplified below when selecting the Pattern of each TP.

〔設備干渉〕
設備の競合に関して、予備処理設備１−１、予備処理設備１−２、予備処理設備２の各設備において、同時に予備処理を実施可能なＴＰ数を２台までとする。また、この同時に同一の予備処理設備で予備処理を実施できるＴＰは、ステップＳ１の処理で生成されたペアを構成するＴＰのみとする。このペアのＴＰの予備処理の開始時刻および終了時刻は同一とする。 [Equipment interference]
Concerning equipment competition, the number of TPs that can be simultaneously subjected to preliminary processing in the preliminary processing equipment 1-1, the preliminary processing equipment 1-2, and the preliminary processing equipment 2 is limited to two. Further, the only TPs that can simultaneously perform the preliminary processing in the same preliminary processing facility are the TPs that constitute the pair generated in the process of step S1. The start time and end time of this pair of TP preliminary processes are the same.

〔時間制約〕
各ＴＰが製鋼工場での各ＣＨの要求時刻に間に合うこと。 [Time constraints]
Each TP must be in time for the time required for each CH at the steel plant.

〔成分制約〕
各ＣＨの成分の目標値を満たすことは、以下の手順で考慮される。すなわち、本実施の形態では、時間制約および成分制約を充足するため、各製鋼工場に運搬されるＴＰの溶銑量の積算量および予備処理後溶銑量の積算量が、各製鋼工場で要求される溶銑量（要求溶銑量）および予備処理後溶銑量（予備処理後要求溶銑量）を上回るように、各ＴＰの向け先製鋼工場を決定する。 (Component restriction)
Satisfying the target value of each CH component is considered in the following procedure. That is, in this embodiment, in order to satisfy the time constraint and the component constraint, the integrated amount of the hot metal amount of TP transported to each steelmaking plant and the integrated amount of the hot metal amount after pretreatment are required in each steelmaking plant. The destination steelmaking factory of each TP is determined so as to exceed the amount of hot metal (required hot metal amount) and the amount of hot metal after pretreatment (required amount of hot metal after pretreatment).

以下、図７を参照してこの手順を具体的に説明する。まず、各製鋼工場が要求しているＣＨのリン成分の目標値が所定の閾値以下である場合に、予備処理によりこの成分の低減が必要なものとして、このＣＨの溶銑量をこの製鋼工場の予備処理後要求溶銑量に積算する。なお、本実施例では目標リン濃度のみに着目しているが、珪素、硫黄等の他成分についても同様の制約を追加することが可能である。   Hereinafter, this procedure will be specifically described with reference to FIG. First, when the target value of the phosphorus component of CH required by each steelmaking factory is below a predetermined threshold value, it is necessary to reduce this component by pretreatment. Accumulate the required amount of hot metal after pretreatment. In this embodiment, attention is focused only on the target phosphorus concentration, but the same restriction can be added to other components such as silicon and sulfur.

また、各ＴＰの採り得る７つのルート（図４参照）のうち、例えば、向け先製鋼工場が１製鋼であるルート１〜３のＴＰの溶銑量を積算して１製鋼の計画溶銑量とし、予備処理設備を経由するルート１，２のＴＰの溶銑量を積算して１製鋼の予備処理後計画溶銑量とする。なお、各ＴＰが製鋼工場に到着した時点でＣＨへの分配が可能になるものとする。   Moreover, among the seven routes (see FIG. 4) that each TP can take, for example, the destination steelmaking factory integrates the amount of hot metal of TPs of routes 1 to 3, which is one steelmaking, to obtain the planned amount of hot metal of one steelmaking, The amount of hot metal of TPs of Routes 1 and 2 that pass through the pretreatment facility is integrated to obtain the planned hot metal amount after pretreatment of one steelmaking. It is assumed that distribution to CH becomes possible when each TP arrives at the steel factory.

そして、図７に例示するように、１製鋼に運搬される計画溶銑量および予備処理後計画溶銑量が、各ＣＨに順に分配される各時点で、常に要求溶銑量および予備処理後要求溶銑量を上回るように、各ＴＰの向け先製鋼工場を決定する。   Then, as illustrated in FIG. 7, the required amount of hot metal and the amount of hot metal required after preliminary treatment are always obtained at each time point when the amount of planned hot metal and the amount of hot metal after preliminary treatment conveyed to one steelmaking are sequentially distributed to each CH. The destination steel factory for each TP will be determined to exceed

〔評価関数〕
本実施の形態の溶銑物流計画処理では、予備処理工程を通過したＴＰ数の合計を評価関数として、この値を最大化するものを最適解とする。 〔Evaluation function〕
In the hot metal distribution planning process of the present embodiment, the optimum solution is the one that maximizes this value using the total number of TPs that have passed through the preliminary process as an evaluation function.

以上の説明から明らかなように、本実施の形態の溶銑物流計画装置１の溶銑物流計画処理では、ペア生成部１１が高炉で発生するＴＰのペアの組み合わせの候補を生成する。また、ルート生成部１２が各ＴＰの採り得るルートの候補として、移動を含む処理の順列で表されたＰａｔｔｅｒｎを生成する。そして、最適化部１３が、設備干渉制約、時間制約、および成分制約等の制約条件を満たして、予備処理比率を評価する評価関数が最適値となるように、ＴＰのペアの組み合わせとルートとを決定し、溶銑物流計画の向け先製鋼工場、予備処理有無、および予備処理設備等の変数を決定する。とくに、各製鋼工場に運搬される計画溶銑量および予備処理後計画溶銑量が、各製鋼工場の要求溶銑量および予備処理後要求溶銑量を上回るようにＴＰのルートが選択されることにより、時間制約および成分制約を充足する溶銑物流計画が作成される。以上のように、溶銑物流計画の作成を予備処理比率を最大化する数理最適化問題に置き換えて解くことにより、予備処理比率が高い溶銑物流計画が作成される。   As is clear from the above description, in the hot metal distribution planning process of the hot metal distribution planning apparatus 1 of the present embodiment, the pair generation unit 11 generates a candidate for a combination of TP pairs generated in the blast furnace. Further, the route generation unit 12 generates a pattern represented by a permutation of processing including movement as a candidate route that each TP can take. Then, the optimization unit 13 satisfies the constraint conditions such as the equipment interference constraint, the time constraint, and the component constraint, and the combination of the TP pair and the route so that the evaluation function for evaluating the preliminary processing ratio becomes the optimum value. And determine variables such as the destination steel mill for the hot metal logistics plan, the presence or absence of pre-treatment, and pre-treatment equipment. In particular, the TP route is selected so that the amount of hot metal transported to each steel plant and the amount of hot metal after pre-treatment exceed the required amount of hot metal and the amount of hot metal after pre-treatment. A hot metal logistics plan that satisfies the constraints and component constraints is created. As described above, a hot metal distribution plan having a high pretreatment ratio is created by replacing the preparation of the hot metal distribution plan with a mathematical optimization problem that maximizes the pretreatment ratio.

なお、本実施の形態では、溶銑物流計画装置１は、溶銑物流計画処理の対象を、まず、３時間に発生するＴＰに限定し、この溶銑物流計画処理対象の時間枠を１時間ずつ後にずらしながら、溶銑物流計画処理を繰り返す。   In the present embodiment, the hot metal distribution planning apparatus 1 limits the target of the hot metal distribution planning process to the TP generated in three hours, and shifts the time frame of the hot metal distribution planning process target by one hour. However, the hot metal logistics planning process is repeated.

図８は、このように時間枠を限定して実施する処理手順を説明するための概念図である。具体的に、溶銑物流計画装置１は、図８（ａ）に示すように、溶銑物流計画処理の開始時（現在）には、過去のＴＰ（発生済み盈車）については、通過済みあるいは通過予定の工程を固定する。そして、溶銑物流計画装置１は、図８（ｂ）に示すように、まず、現在から３時間先までに発生するＴＰを対象に、溶銑物流計画処理を実施する。次に、溶銑物流計画装置１は、図８（ｃ）に示すように、現在から１時間先までの１時間に発生するＴＰについて、計画された通過工程を固定する。次に、溶銑物流計画装置１は、図８（ｄ）に示すように、現在より１時間先から４時間先までの３時間に発生するＴＰを対象に、溶銑物流計画処理を実施する。そして、溶銑物流計画装置１は、図８（ｅ）に示すように、現在より１時間先から２時間先までの１時間に発生するＴＰについて、計画された通過工程を既定として固定する。溶銑物流計画装置１は、以後も同様の処理を繰り返す。   FIG. 8 is a conceptual diagram for explaining the processing procedure performed with the time frame limited as described above. Specifically, as shown in FIG. 8 (a), the hot metal distribution planning device 1 has passed or passed past TPs (generated miscaries) at the start (current) of the hot metal distribution planning process. Fix the scheduled process. Then, as shown in FIG. 8 (b), the hot metal distribution planning device 1 first performs hot metal distribution planning processing for the TP generated three hours ahead from the present. Next, as shown in FIG. 8C, the hot metal distribution planning apparatus 1 fixes the planned passing process for TP generated in one hour from the present to one hour ahead. Next, as shown in FIG. 8 (d), the hot metal distribution planning device 1 performs hot metal distribution planning processing for TPs generated in three hours from one hour ahead to four hours ahead from the present. Then, as shown in FIG. 8 (e), the hot metal distribution planning device 1 fixes the planned passing process as a default for TP generated in one hour from one hour ahead to two hours ahead from the present. The hot metal distribution planning apparatus 1 repeats the same processing thereafter.

このように、溶銑物流計画装置１は、ＴＰの通過工程を指定する溶銑物流計画を３時間の時間枠で作成し、最初の１時間の溶銑物流計画を既定として固定するとともに時間枠を１時間ずつ後ろにずらして再度溶銑物流計画を作成する処理を繰り返す。これにより、溶銑物流計画装置１は、情報処理装置１０の負荷を低減しつつ、長時間分のＴＰの溶銑物流計画を作成することができる。   As described above, the hot metal distribution planning apparatus 1 creates a hot metal distribution plan that designates the TP passage process in a time frame of 3 hours, fixes the initial 1 hour hot metal distribution plan as a default, and sets the time frame to 1 hour. Repeat the process of creating a hot metal distribution plan by shifting back one by one. As a result, the hot metal distribution planning device 1 can create a hot metal distribution plan for TP for a long time while reducing the load on the information processing apparatus 10.

なお、計画を作成するＴＰを将来３時間までに限定したのは、実用的な計算時間（例えば１分以内）で解を得るためには、将来３時間程度に発生するＴＰの台数程度までに計画対象を限定せざるを得ないためである（現状の高速なＰＣ等使用した場合）。   In addition, the reason for limiting the TP for creating a plan to 3 hours in the future is to obtain a solution with a practical calculation time (for example, within 1 minute) until the number of TPs generated in about 3 hours in the future. This is because the planning target must be limited (when a current high-speed PC or the like is used).

また、将来「１時間分」のＴＰの計画のみを固定したのは、次の理由による。すなわち、１回の処理で計画を立案する３時間分のＴＰ全てについての計画を固定してしまうと、さらに計算ステップを進めてＴＰの計画を作成する際に、既に固定した計画が多すぎて計画の自由度が失われ実行不能に陥る可能性があるためである。そこで、最初の１時間のみ（ここでは例えば全体の１／３程度）を固定することにより、次回計画時の計画の自由度を保持するようにした。ここで、上記の３時間、１時間の枠はあくまで例であり、時間枠を変更してもよい。   In addition, the reason for fixing the TP plan for “one hour” in the future is as follows. In other words, if the plan for all TPs for 3 hours for which a plan is created in one process is fixed, there are too many plans already fixed when creating a TP plan by further calculating steps. This is because the degree of freedom in planning may be lost and it may become impossible to execute. Therefore, by fixing only the first hour (here, for example, about 1/3 of the entire time), the degree of freedom of the plan at the next plan is maintained. Here, the frame of 3 hours and 1 hour is merely an example, and the time frame may be changed.

また、上記実施の形態において、溶銑輸送容器としてトピードカーを例示したが、溶銑輸送容器は溶銑鍋やその他の容器でもよく、溶銑物流計画処理を適用できる。   Moreover, in the said embodiment, although the topped car was illustrated as a hot metal transport container, the hot metal transport container may be a hot metal ladle or other containers, and the hot metal distribution planning process can be applied.

（実施例）
本実施の形態の溶銑物流計画処理を１日半分のＴＰに対して実行した。図９は、溶銑物流計画処理の開始から３時間分のＴＰについて作成された溶銑物流計画を例示するガントチャートである。また、図１０は、１日半分のＴＰについて作成された溶銑物流計画を例示するガントチャートである。表１に、予備処理比率（予備処理設備通過割合）を計算値として示す。また、表１に、オペレータによるマニュアル操業の結果の予備処理比率を実績値として示す。 (Example)
The hot metal distribution planning process of the present embodiment was executed for half a day of TP. FIG. 9 is a Gantt chart illustrating the hot metal distribution plan created for the TP for 3 hours from the start of the hot metal distribution plan process. FIG. 10 is a Gantt chart illustrating a hot metal distribution plan created for half a day of TP. Table 1 shows the preliminary treatment ratio (pretreatment facility passage ratio) as a calculated value. Table 1 shows the preliminary processing ratio of the result of the manual operation by the operator as the actual value.

Figure 2016130331
Figure 2016130331

表１に示すように、本実施の形態の溶銑物流計画処理により、予備処理比率が１０％程度向上することが確認された。   As shown in Table 1, it was confirmed that the pretreatment ratio was improved by about 10% by the hot metal distribution planning process of the present embodiment.

以上、本発明者によってなされた発明を適用した実施の形態について説明したが、本実施形態による本発明の開示の一部をなす記述および図面により本発明が限定されることはない。すなわち、本実施形態に基づいて当業者などによりなされる他の実施の形態、実施例及び運用技術等は全て本発明の範疇に含まれる。   Although the embodiment to which the invention made by the present inventor is applied has been described above, the present invention is not limited by the description and the drawings that form a part of the disclosure of the present invention. That is, other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

１ 溶銑物流計画装置
１０ 情報処理装置
１１ ペア生成部
１２ ルート生成部
１３ 最適化部
２０ 入力部
３０ 出力部 DESCRIPTION OF SYMBOLS 1 Hot metal physical distribution planning apparatus 10 Information processing apparatus 11 Pair production | generation part 12 Route production | generation part 13 Optimization part 20 Input part 30 Output part

Claims (3)

高炉と製鋼工場との間に溶銑の予備処理設備が設置されている製鉄所内における溶銑物流計画を作成する溶銑物流計画方法であって、
前記予備処理設備においてペアで予備処理の対象とされる溶銑を積載する溶銑輸送容器のペアの組み合わせの候補を生成するステップと、
前記各溶銑輸送容器の採り得る通過工程を、移動を含む処理の順列で表されたルートの候補として生成するステップと、
前記ルートの候補について、前記予備処理設備の競合に関する制約と、前記各製鋼工場での一定期間内に要求される溶銑量の積算量および予備処理後溶銑量の積算量に関する制約とを満たしつつ、全溶銑輸送容器のうち予備処理が実施される溶銑輸送容器の比率である予備処理比率を最大化するように数理最適化問題を解くことにより、該ルートの候補および前記ペアの組み合わせの候補のうち、該予備処理比率が最も高いものを選択して、当該ペアの前記各溶銑輸送容器の向け先の製鋼工場、該各溶銑輸送容器の溶銑に対して予備処理を行うか否か、および使用する前記予備処理設備が決定した溶銑物流計画を作成するステップと、
を含むことを特徴とする溶銑物流計画方法。 A hot metal logistics planning method for creating a hot metal logistics plan in an ironworks where a hot metal pretreatment facility is installed between a blast furnace and a steelmaking factory,
Generating a combination candidate of a hot metal transport container for loading hot metal to be pretreated in pairs in the pretreatment facility; and
Generating a passing process that can be taken by each hot metal transport container as a route candidate represented by a permutation of processing including movement; and
For the route candidates, while satisfying the restrictions on the competition of the pretreatment equipment and the restrictions on the accumulated amount of hot metal and the accumulated amount of hot metal after pretreatment required within a certain period in each steelmaking factory, By solving the mathematical optimization problem so as to maximize the pretreatment ratio, which is the ratio of the hot metal transport containers in which the pretreatment is performed among all the hot metal transport containers, among the candidates for the route and the combinations of the pairs , Select the one with the highest pretreatment ratio, and whether or not to perform pretreatment for the hot metal of each hot metal transport container, the steelmaking factory to which each hot metal transport container of the pair is directed Creating a hot metal distribution plan determined by the pretreatment facility;
A hot metal logistics planning method characterized by comprising: 所定期間Ａ内に発生する溶銑を積載する溶銑輸送容器を対象として前記溶銑物流計画を作成した後、当該所定期間Ａ内の最初の所定期間Ｂについて発生する溶銑を積載する溶銑輸送容器について、作成された前記溶銑物流計画を既定とするとともに、前記所定期間Ａの時間枠を該所定期間Ｂだけ後にずらした期間に発生する溶銑を積載する溶銑輸送容器を対象として、前記溶銑物流計画を作成することを特徴とする請求項１に記載の溶銑物流計画方法。   After creating the hot metal distribution plan for the hot metal transport container for loading the hot metal generated within the predetermined period A, the hot metal transport container for loading the hot metal generated for the first predetermined period B within the predetermined period A is prepared. The hot metal distribution plan is set as a default, and the hot metal distribution plan is created for a hot metal transport container loaded with hot metal generated during a period in which the time frame of the predetermined period A is shifted by the predetermined period B. The hot metal logistics planning method according to claim 1, wherein: 高炉と製鋼工場との間に溶銑の予備処理設備が設置されている製鉄所内における溶銑物流計画を作成する溶銑物流計画装置方法であって、
前記予備処理設備においてペアで予備処理の対象とされる溶銑を積載する溶銑輸送容器のペアの組み合わせの候補を生成する手段と、
前記各溶銑輸送容器の採り得る通過工程を、移動を含む処理の順列で表されたルートの候補として生成する手段と、
前記ルートの候補について、前記予備処理設備の競合に関する制約と、前記各製鋼工場での一定期間内に要求される溶銑量の積算量および予備処理後溶銑量の積算量に関する制約とを満たしつつ、全溶銑輸送容器のうち予備処理が実施される溶銑輸送容器の比率である予備処理比率を最大化するように数理最適化問題を解くことにより、該ルートの候補および前記ペアの組み合わせの候補のうち、該予備処理比率が最も高いものを選択して、当該ペアの前記各溶銑輸送容器の向け先の製鋼工場、該各溶銑輸送容器の溶銑に対して予備処理を行うか否か、および使用する前記予備処理設備が決定した溶銑物流計画を作成する手段と、
を備えることを特徴とする溶銑物流計画装置。 A hot metal logistics planning apparatus method for creating a hot metal logistics plan in an ironworks where a hot metal pretreatment facility is installed between a blast furnace and a steelmaking factory,
Means for generating candidate combinations of hot metal transport container pairs for loading hot metal to be pretreated in pairs in the pretreatment facility;
Means for generating a passing step that can be taken by each hot metal transport container as a route candidate represented by a permutation of processing including movement;
For the route candidates, while satisfying the restrictions on the competition of the pretreatment equipment and the restrictions on the accumulated amount of hot metal and the accumulated amount of hot metal after pretreatment required within a certain period in each steelmaking factory, By solving the mathematical optimization problem so as to maximize the pretreatment ratio, which is the ratio of the hot metal transport containers in which the pretreatment is performed among all the hot metal transport containers, among the candidates for the route and the combinations of the pairs , Select the one with the highest pretreatment ratio, and whether or not to perform pretreatment for the hot metal of each hot metal transport container, the steelmaking factory to which each hot metal transport container of the pair is directed Means for creating a hot metal distribution plan determined by the pretreatment facility;
A hot metal logistics planning device comprising:
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