JP2001049313A - Oxygen enrichment method for blast furnace - Google Patents
Oxygen enrichment method for blast furnaceInfo
- Publication number
- JP2001049313A JP2001049313A JP11224857A JP22485799A JP2001049313A JP 2001049313 A JP2001049313 A JP 2001049313A JP 11224857 A JP11224857 A JP 11224857A JP 22485799 A JP22485799 A JP 22485799A JP 2001049313 A JP2001049313 A JP 2001049313A
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- Prior art keywords
- oxygen
- blast furnace
- flow rate
- enrichment
- oxygen enrichment
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Abstract
(57)【要約】
【課題】 高炉送風機と高炉との組み合わせの違いによ
る放風の有無、放風量等によらず高炉に必要となる酸素
を安定的に酸素富化すること。
【解決手段】 高炉送風機１の吸込側の送風ダクト５に
酸素供給配管８を接続し、酸素流量計１１、吸込流量計
１５および送風流量計１４により、酸素流量、吸込流
量、送風流量を計測することにより、酸素富化率または
酸素富化量を演算し、その酸素富化率または酸素富化量
が常に一定になるように酸素流量調節弁１２で酸素流量
を調節する。
(57) [Summary] [PROBLEMS] To stably enrich oxygen required for a blast furnace regardless of the presence or absence of blown air and the amount of blown air due to the difference in combination between a blast furnace blower and a blast furnace. SOLUTION: An oxygen supply pipe 8 is connected to a blow duct 5 on a suction side of a blast furnace blower 1, and an oxygen flow rate, a suction flow rate, and a blow flow rate are measured by an oxygen flow meter 11, a suction flow meter 15, and a blow flow meter 14. Thereby, the oxygen enrichment rate or the oxygen enrichment amount is calculated, and the oxygen flow rate is adjusted by the oxygen flow rate control valve 12 so that the oxygen enrichment rate or the oxygen enrichment amount is always constant.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高炉送風へ酸素を
富化する設備において、高炉の必要とする酸素を安定的
に高炉送風に酸素富化する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for stably enriching oxygen required in a blast furnace with blast furnace blast in equipment for enriching oxygen in blast furnace blast.
【０００２】[0002]
【従来の技術】高炉への送風空気に酸素を富化すること
（以下「酸素富化」と称する）は銑鉄の生産量を増大、
微粉炭吹き込み量増大に伴う高炉内反応の促進には必要
不可欠なものである。酸素富化の方法としては、従来か
ら高炉送風機と熱風炉との間の送風ダクトに酸素圧縮機
により昇圧した酸素を酸素導入管から送風空気中に吹き
込んで熱風炉へ導き昇温し、これを高炉の羽口から炉内
へ吹き込む方法が一般的であった。2. Description of the Related Art Enriching the air blown into a blast furnace with oxygen (hereinafter referred to as "oxygen enrichment") increases the production of pig iron,
It is indispensable to promote the reaction in the blast furnace as the pulverized coal injection volume increases. As a method of oxygen enrichment, conventionally, oxygen that has been pressurized by an oxygen compressor into a blowing duct between a blast furnace blower and a hot blast stove is blown into a blast air from an oxygen introducing pipe into a blast stove, and the temperature is raised. It was common to blow into the furnace from the tuyere of a blast furnace.
【０００３】しかし、この方法では、高炉送風機と熱風
炉との間すなわち高炉送風機の吐出側にある送風ダクト
に酸素を導入するためには酸素圧縮機を用いて高炉送風
機の吐出圧より酸素を高圧にしなければならず、このた
め大容量の酸素圧縮機を必要とし、コスト高になるばか
りでなくメンテナンス等にも労力を要するという問題が
あった。However, in this method, in order to introduce oxygen into the blow duct between the blast furnace blower and the hot blast furnace, that is, into the blow duct on the discharge side of the blast furnace blower, oxygen is supplied at a pressure higher than the discharge pressure of the blast furnace blower using an oxygen compressor. Therefore, there is a problem that a large-capacity oxygen compressor is required, which not only increases the cost but also requires labor for maintenance and the like.
【０００４】そこで、かかる問題点を解決するために、
特開昭４７−１８７０７号公報、特開平６−３０６４３
１号公報に示す方法では、高炉送風機の吸込側の送風ダ
クトに酸素供給配管を接続して送風空気中に酸素を導入
し、高炉送風機により熱風炉へ導き昇温して高炉へ酸素
富化空気を送風することとしている。またこれらを組み
合わせ、圧力および純度の異なる酸素の富化方法が特開
昭５１−８１０３号公報に開示されている。Therefore, in order to solve such a problem,
JP-A-47-18707, JP-A-6-30643
In the method disclosed in Japanese Patent Application Publication No. 1 (1998) -101, an oxygen supply pipe is connected to a blow duct on the suction side of a blast furnace blower to introduce oxygen into the blown air, and the oxygen is supplied to the hot blast furnace by the blast furnace blower and the temperature is increased to the blast furnace. Is to be blown. Japanese Patent Application Laid-Open No. Sho 51-8103 discloses a method for enriching oxygen having different pressure and purity by combining them.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記特
開昭４７−１８７０７号公報、特開平６−３０６４３１
号公報の如く高炉送風機の吸込側に低圧酸素を導入する
方法では、次のような問題がある。すなわち、高炉送風
機は高炉あたり複数台有しており、またその容積、能力
も各々異なっているためその組み合わせにより、サージ
ング等による設備破壊防止のため送風空気を高炉送風機
の吐出側に設置された放風配管から大気中に放出する放
風運転を行っている。その際、吸込側で導入された酸素
も同時に大気中に放出されるため、高炉に必要とされる
酸素量が送れなくなる。特開昭５１−８１０３号公報に
示す方法も同様であるが、濃度の異なる酸素を高炉送風
機の吸込側と吐出側から同時に導入するため、高炉の必
要とする酸素量の制御が困難である。However, Japanese Patent Application Laid-Open No. 47-18707 and Japanese Patent Application Laid-Open No. 6-306431 describe the above.
In the method of introducing low-pressure oxygen to the suction side of a blast furnace blower as disclosed in Japanese Patent Application Laid-Open Publication No. H10-260, there are the following problems. That is, a plurality of blast furnace blowers are provided for each blast furnace, and their volumes and capacities are different from each other. The air is blown out from the wind pipe to the atmosphere. At that time, the oxygen introduced on the suction side is also released into the atmosphere at the same time, so that the oxygen amount required for the blast furnace cannot be sent. The method disclosed in Japanese Patent Application Laid-Open No. 51-8103 is similar, but it is difficult to control the amount of oxygen required by the blast furnace because oxygen having different concentrations is simultaneously introduced from the suction side and the discharge side of the blast furnace blower.
【０００６】本発明は、上記のような問題点を解決する
ためになされたもので、高炉送風機と高炉との組み合わ
せの違いによる放風の有無、放風量等によらず高炉に必
要となる酸素を安定的に酸素富化することができる高炉
への酸素富化方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide oxygen required for a blast furnace irrespective of the presence / absence of air blowing and the amount of air blowing due to the difference in combination between a blast furnace blower and a blast furnace. It is an object of the present invention to provide a method for enriching oxygen in a blast furnace capable of stably enriching oxygen.
【０００７】[0007]
【課題を解決するための手段】本発明に係る高炉への酸
素富化方法は、高炉送風機の吸込側に酸素富化のための
酸素を導入する方法において、演算により求められる酸
素富化率または酸素富化量が常に一定になるように酸素
流量を制御することを特徴とするものである。A method for enriching oxygen in a blast furnace according to the present invention is a method for introducing oxygen for oxygen enrichment into the suction side of a blast furnace blower. It is characterized in that the oxygen flow rate is controlled so that the oxygen enrichment amount is always constant.
【０００８】また、本発明の高炉への酸素富化方法にお
いて、純度の異なる酸素の場合は酸素供給配管系を切り
替え、酸素濃度を補正することにより酸素富化率または
酸素富化量を一定にすることを特徴とするものである。In the method for enriching oxygen in a blast furnace according to the present invention, in the case of oxygen having a different purity, the oxygen supply piping system is switched to correct the oxygen concentration so that the oxygen enrichment rate or the oxygen enrichment amount is kept constant. It is characterized by doing.
【０００９】本発明では、放風運転時の放風流量を計測
できない事情に鑑み、演算により酸素富化率または酸素
富化量を求める。このため酸素富化のための酸素は高炉
送風機の吸込側に導入する。そして、放風運転の際の放
風流量は、高炉送風機の吸込流量と高炉への送風流量と
から算出することができるので、酸素富化率は、その吸
込流量と、酸素供給源の酸素流量および酸素濃度とから
算出することができる。また酸素富化量は、放風流量か
ら放出酸素量を演算で求めることにより、その放出酸素
量を用いて酸素流量と酸素濃度とから算出することがで
きる。従って、演算により求められる酸素富化率または
酸素富化量が常に一定になるように酸素流量を制御する
ことにより、高炉送風機と高炉との組み合わせの違いに
よる放風の有無、放風量によらず高炉に必要となる酸素
を安定的に酸素富化することができ、高炉の安定操業が
可能となる。In the present invention, the oxygen enrichment rate or the oxygen enrichment amount is obtained by calculation in consideration of the situation where the air discharge flow rate during the air discharge operation cannot be measured. Therefore, oxygen for oxygen enrichment is introduced into the suction side of the blast furnace blower. Since the blowoff flow rate during the blowout operation can be calculated from the suction flow rate of the blast furnace blower and the blowout flow rate to the blast furnace, the oxygen enrichment rate can be calculated based on the suction flow rate and the oxygen flow rate of the oxygen supply source. And the oxygen concentration. Further, the oxygen enrichment amount can be calculated from the oxygen flow rate and the oxygen concentration by using the released oxygen amount by calculating the released oxygen amount from the discharged air flow amount. Therefore, by controlling the oxygen flow rate so that the oxygen enrichment rate or the oxygen enrichment amount obtained by the calculation is always constant, regardless of the presence or absence of air blowing due to the difference in the combination of the blast furnace blower and the blast furnace, regardless of the amount of air blowing Oxygen required for the blast furnace can be stably enriched with oxygen, and stable operation of the blast furnace can be performed.
【００１０】また、純度の異なる酸素を使用する場合に
は、酸素供給系を切り替え、演算式における酸素濃度を
補正し、演算により求められる酸素富化率または酸素富
化量を一定にすることで、酸素の純度によらず高炉に必
要となる酸素を安定的に酸素富化することができる。When oxygen having different purity is used, the oxygen supply system is switched, the oxygen concentration in the arithmetic expression is corrected, and the oxygen enrichment rate or oxygen enrichment obtained by the arithmetic operation is made constant. Oxygen required for the blast furnace can be stably enriched regardless of the oxygen purity.
【００１１】[0011]
【発明の実施の形態】図１は本発明の実施の形態を示す
概略のフロー図である。同図において、１は高炉送風
機、２は熱風炉、３は高炉、４は制御装置であり、高炉
送風機１の吸込側の送風ダクト５に低圧低純度酸素６お
よび低圧高純度酸素７の配管系８を接続し、各々の元弁
９、１０の開閉により配管を切り替えて低圧低純度酸素
６または低圧高純度酸素７を高炉送風機１の吸込側に導
入するようにしている。ここで使用する酸素の純度は、
例えば２種類に分け、低純度から高純度の範囲として９
６．５〜９９．６％のものを使用している。酸素流量は
流量計１１により計測され、その信号は制御装置４に送
られ、後述する演算式を用いて、放風の有無や放風量な
どによらず、演算による酸素富化率または酸素富化流量
が常に一定になるように酸素流量調節弁１２を制御す
る。また、酸素富化率または酸素富化流量の演算に必要
な吸込流量および送風流量はそれぞれ吸込流量計１３、
送風流量計１４により計測され、それらの信号により制
御装置４はそれぞれ吸込流量調節弁１５、送風流量調節
弁１６、放風流量調節弁１７を制御する。FIG. 1 is a schematic flow chart showing an embodiment of the present invention. In the figure, 1 is a blast furnace blower, 2 is a hot blast furnace, 3 is a blast furnace, 4 is a control device, and a piping system for low-pressure low-purity oxygen 6 and low-pressure high-purity oxygen 7 is provided in a blowing duct 5 on the suction side of the blast furnace blower 1. The low pressure low-purity oxygen 6 or the low pressure high-purity oxygen 7 is introduced into the suction side of the blast furnace blower 1 by switching pipes by opening and closing the respective main valves 9, 10. The purity of oxygen used here is
For example, it is divided into two types, and 9
6.5 to 99.6% is used. The oxygen flow rate is measured by the flow meter 11, and the signal is sent to the control device 4, and the oxygen enrichment rate or the oxygen enrichment is calculated by an arithmetic expression described below, regardless of whether or not the air is blown or the amount of the blown air. The oxygen flow control valve 12 is controlled so that the flow is always constant. In addition, the suction flow rate and the air flow rate required for calculating the oxygen enrichment rate or the oxygen enrichment flow rate are respectively set to the suction flow meter 13,
The controller 4 controls the suction flow control valve 15, the blow flow control valve 16, and the discharge flow control valve 17 based on the signals measured by the blow flow meter 14.
【００１２】この実施の形態では、送風空気は高炉送風
機１により昇圧し、熱風炉２にて昇温されたのち高炉３
へ送られる。酸素は、低圧酸素として高炉送風機１の吸
込側から導入され、送風空気と同様に高炉３へ送られ
る。高炉３の必要とする酸素は、制御装置４において酸
素富化率または酸素富化流量を演算しその結果が高炉３
の操業員から高炉送風機１の操業員へ連絡され、これを
受けて高炉送風機１の操業員は酸素富化を行う。In this embodiment, the blast air is pressurized by a blast furnace blower 1, heated in a hot blast furnace 2 and then blast furnace 3.
Sent to Oxygen is introduced as low-pressure oxygen from the suction side of the blast furnace blower 1 and sent to the blast furnace 3 in the same manner as the blown air. The oxygen required by the blast furnace 3 is calculated by the controller 4 to calculate the oxygen enrichment rate or the oxygen enrichment flow rate.
Is notified to the operator of the blast furnace blower 1 and the operator of the blast furnace blower 1 performs oxygen enrichment.
【００１３】ここで、酸素富化率とは、酸素を加えた後
の酸素成分率から、空気中の酸素成分率２１％を除外し
た値である。また、酸素富化流量とは、大気中の空気に
加えられた酸素量の増加分である。酸素富化流量は
（１）式により、酸素富化率は（２）式により、それぞ
れ算出することができる。そして、酸素富化率または酸
素富化流量のどちらを使用するかは高炉３の操業員のニ
ーズにより決定される。Here, the oxygen enrichment ratio is a value obtained by excluding the oxygen component ratio in the air of 21% from the oxygen component ratio after adding oxygen. The oxygen-enriched flow rate is an increase in the amount of oxygen added to air in the atmosphere. The oxygen enrichment flow rate can be calculated by equation (1), and the oxygen enrichment rate can be calculated by equation (2). Whether to use the oxygen enrichment rate or the oxygen enrichment flow rate is determined by the needs of the blast furnace 3 operator.
【００１４】[0014]
【数１】 (Equation 1)
【００１５】[0015]
【数２】 (Equation 2)
【００１６】また、これらの演算式においては、（１）
式の放出酸素量だけが未知の値であるが、これは以下に
述べる理由により演算で求める。すなわち、高炉送風機
１と高炉３との組み合わせ如何により、高炉３の高圧操
業の維持および高炉送風機１のサージング防止のため放
風運転を行う場合がある。その際、富化した酸素も放出
されるため、高炉３に必要とされる酸素富化を行うには
その放出酸素量だけ余分に酸素富化が必要となる。放風
流量はその設置環境等の問題により計測できない。同様
に放風された放出酸素量も計測できないため、これらの
量は各々（３）（４）式により演算により算出する。In these arithmetic expressions, (1)
Although only the amount of released oxygen in the equation is an unknown value, it is calculated by the following reason. That is, depending on the combination of the blast furnace blower 1 and the blast furnace 3, the blow-off operation may be performed to maintain the high pressure operation of the blast furnace 3 and prevent the blast furnace blower 1 from surging. At that time, the enriched oxygen is also released. Therefore, in order to perform the oxygen enrichment required for the blast furnace 3, an extra oxygen enrichment by the amount of released oxygen is required. The blown air flow rate cannot be measured due to the installation environment and other problems. Similarly, since the amount of released oxygen cannot be measured, these amounts are calculated by the equations (3) and (4).
【００１７】[0017]
【数３】 (Equation 3)
【００１８】[0018]
【数４】 (Equation 4)
【００１９】放風流量は、吸込流量計１３により計測さ
れた吸込流量と送風流量計１４により計測された送風流
量とから（３）式により算出される。また放出酸素量
は、（３）式により算出された放風流量と、計測値であ
る吸込流量および酸素流量とから、（４）式により算出
することができる。または、（２）式により酸素富化率
を算出できるので、この算出された酸素富化率と、
（３）式の放風流量、および酸素濃度とから（５）式に
より算出することができる。これらの放風流量、放出酸
素量の値はプロセスデータとしてオンラインで、または
操業員による手入力で制御装置４に取り込まれている。The blow-off flow rate is calculated from the suction flow rate measured by the suction flow meter 13 and the blow-off flow rate measured by the blow-off flow meter 14 according to equation (3). Further, the released oxygen amount can be calculated by the equation (4) from the blown air flow rate calculated by the equation (3) and the measured values of the suction flow rate and the oxygen flow rate. Alternatively, since the oxygen enrichment rate can be calculated by the equation (2), the calculated oxygen enrichment rate is calculated by:
It can be calculated by the equation (5) from the blowing flow rate and the oxygen concentration in the equation (3). The values of the blown air flow rate and the released oxygen amount are taken into the control device 4 as process data online or manually input by an operator.
【００２０】[0020]
【数５】 (Equation 5)
【００２１】高炉３の要求が酸素富化流量の場合は
（１）式にて、必要な酸素富化流量となるよう酸素流量
が補正され酸素流量調節弁１２により流量調節される。
また高炉側の要求が酸素富化率の場合は（２）式にて、
必要な酸素富化率となるよう酸素流量が補正され酸素流
量調節弁１２により流量調節される。When the demand for the blast furnace 3 is an oxygen-enriched flow rate, the oxygen flow rate is corrected by the equation (1) so that the required oxygen-enriched flow rate is obtained, and the flow rate is adjusted by the oxygen flow rate control valve 12.
If the blast furnace requirement is oxygen enrichment,
The oxygen flow rate is corrected so that the necessary oxygen enrichment ratio is obtained, and the flow rate is adjusted by the oxygen flow rate control valve 12.
【００２２】酸素供給側の都合等により高価な高純度酸
素より、安価な低純度を使用する場合、高純度酸素と低
純度酸素とを低純度酸素元弁９と高純度酸素元弁１０と
を開閉することにより配管を切り替えて酸素富化を行う
が、酸素の濃度の違いにより高炉の必要とする酸素富化
が行えないことになる。しかし、高炉に必要とされる酸
素富化を行うため、酸素濃度は酸素供給側で計測されて
おり、その酸素濃度を上式にて酸素流量を補正してい
る。従って、この実施の形態では、放風運転の有無、放
風量によらず、また酸素の濃度によらず上記式による演
算で酸素流量を補正し、高炉の必要とする酸素富化を行
うことができる。When low-purity oxygen is used at a lower price than high-purity oxygen, which is more expensive than the oxygen supply side, the high-purity oxygen and the low-purity oxygen are combined with the low-purity oxygen source valve 9 and the high-purity oxygen source valve 10. Oxygen enrichment is performed by switching pipes by opening and closing, but oxygen enrichment required for the blast furnace cannot be performed due to a difference in oxygen concentration. However, in order to perform oxygen enrichment required for a blast furnace, the oxygen concentration is measured on the oxygen supply side, and the oxygen flow is corrected by the above equation. Therefore, in this embodiment, it is possible to correct the oxygen flow rate by the calculation according to the above equation regardless of the presence or absence of the blow-off operation, the blow-out amount, and the oxygen concentration, thereby performing the oxygen enrichment required for the blast furnace. it can.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
高炉送風機の吸込側に酸素富化のための酸素を導入する
方法において、演算により求められる酸素富化率または
酸素富化量が常に一定になるように酸素流量を制御する
ので、高炉送風機と高炉の組み合わせの違いによる放風
の有無、放風量によらず高炉の必要とする酸素を安定的
に酸素富化することができる。また、純度の異なる酸素
の場合は酸素供給配管系を切り替え、酸素濃度を補正す
ることにより酸素富化率または酸素富化量を一定にする
ので、酸素の純度によらず高炉の必要とする酸素を安定
的に酸素富化することができる。As described above, according to the present invention,
In the method of introducing oxygen for oxygen enrichment into the suction side of a blast furnace blower, the oxygen flow rate is controlled so that the oxygen enrichment rate or the oxygen enrichment amount calculated by calculation is always constant. Oxygen required for the blast furnace can be stably enriched regardless of the presence or absence of air blowing and the amount of air blowing depending on the combination of the above. In the case of oxygen having different purity, the oxygen supply pipe system is switched and the oxygen concentration is corrected to keep the oxygen enrichment rate or the oxygen enrichment amount constant. Can be stably enriched with oxygen.
【図１】本発明の実施の形態を示す概略のフロー図であ
る。FIG. 1 is a schematic flow chart showing an embodiment of the present invention.
１ 高炉送風機 ２ 熱風炉 ３ 高炉 ４ 制御装置 ５ 送風ダクト ６ 低圧低純度酸素 ７ 低圧高純度酸素 ８ 配管系 ９ 低純度酸素元弁 １０ 高純度酸素元弁 １１ 酸素流量計 １２ 酸素流量調節弁 １３ 吸込流量計 １４ 送風流量計 １５ 吸込流量調節弁 １６ 送風流量調節弁 １７ 放風流量調節弁 1 Blast Furnace Blower 2 Hot Blast Furnace 3 Blast Furnace 4 Controller 5 Blast Duct 6 Low Pressure Low Purity Oxygen 7 Low Pressure High Purity Oxygen 8 Piping System 9 Low Purity Oxygen Main Valve 10 High Purity Oxygen Main Valve 11 Oxygen Flow Meter 12 Oxygen Flow Control Valve 13 Suction Flow meter 14 Blow flow meter 15 Suction flow control valve 16 Blow flow control valve 17 Blow flow control valve
Claims (2)
酸素を導入する方法において、 演算により求められる酸素富化率または酸素富化量が常
に一定になるように酸素流量を制御することを特徴とす
る高炉への酸素富化方法。1. A method for introducing oxygen for oxygen enrichment into a suction side of a blast furnace blower, wherein the oxygen flow rate is controlled so that an oxygen enrichment rate or an oxygen enrichment amount calculated by calculation is always constant. A method for enriching oxygen in a blast furnace, characterized in that:
系を切り替え、酸素濃度を補正することにより酸素富化
率または酸素富化量を一定にすることを特徴とする請求
項１記載の高炉への酸素富化方法。2. A blast furnace according to claim 1, wherein, in the case of oxygen having a different purity, the oxygen supply piping system is switched to correct the oxygen concentration so that the oxygen enrichment rate or the oxygen enrichment amount is kept constant. How to enrich oxygen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22485799A JP3988332B2 (en) | 1999-08-09 | 1999-08-09 | Oxygen enrichment method for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22485799A JP3988332B2 (en) | 1999-08-09 | 1999-08-09 | Oxygen enrichment method for blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001049313A true JP2001049313A (en) | 2001-02-20 |
| JP3988332B2 JP3988332B2 (en) | 2007-10-10 |
Family
ID=16820266
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22485799A Expired - Fee Related JP3988332B2 (en) | 1999-08-09 | 1999-08-09 | Oxygen enrichment method for blast furnace |
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| Country | Link |
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| JP (1) | JP3988332B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866900A1 (en) * | 2004-02-27 | 2005-09-02 | Air Liquide | Procedure for the renovation of a combined vertical furnace and gas separation unit, the fluid supply to the furnace being pure or air-diluted oxygen |
| CN104060005A (en) * | 2013-03-18 | 2014-09-24 | 宝山钢铁股份有限公司 | Oxygen enrichment system of blast furnace blower |
| KR101477385B1 (en) | 2013-04-30 | 2015-01-06 | 현대제철 주식회사 | Method for controlling blow of blast furnace |
| JP2017008352A (en) * | 2015-06-19 | 2017-01-12 | Ｊｆｅスチール株式会社 | Oxygen supply apparatus and method in iron making process |
| CN107354254A (en) * | 2017-07-31 | 2017-11-17 | 中冶华天南京电气工程技术有限公司 | Oxygen-enriched system and the control method of oxygen enrichment percentage before a kind of blast furnace machine |
-
1999
- 1999-08-09 JP JP22485799A patent/JP3988332B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866900A1 (en) * | 2004-02-27 | 2005-09-02 | Air Liquide | Procedure for the renovation of a combined vertical furnace and gas separation unit, the fluid supply to the furnace being pure or air-diluted oxygen |
| WO2005085727A3 (en) * | 2004-02-27 | 2006-01-12 | N Des Procedes Georges Claude | Method for renovating a combined blast furnace and air/gas separation unit system |
| US7645319B2 (en) | 2004-02-27 | 2010-01-12 | L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for renovating a combined blast furnace and air/gas separation unit system |
| CN104060005A (en) * | 2013-03-18 | 2014-09-24 | 宝山钢铁股份有限公司 | Oxygen enrichment system of blast furnace blower |
| KR101477385B1 (en) | 2013-04-30 | 2015-01-06 | 현대제철 주식회사 | Method for controlling blow of blast furnace |
| JP2017008352A (en) * | 2015-06-19 | 2017-01-12 | Ｊｆｅスチール株式会社 | Oxygen supply apparatus and method in iron making process |
| CN107354254A (en) * | 2017-07-31 | 2017-11-17 | 中冶华天南京电气工程技术有限公司 | Oxygen-enriched system and the control method of oxygen enrichment percentage before a kind of blast furnace machine |
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| Publication number | Publication date |
|---|---|
| JP3988332B2 (en) | 2007-10-10 |
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