JPS5858206A - Controlling method for temperature of reducing gas in production of pig iron - Google Patents
Controlling method for temperature of reducing gas in production of pig ironInfo
- Publication number
- JPS5858206A JPS5858206A JP15654981A JP15654981A JPS5858206A JP S5858206 A JPS5858206 A JP S5858206A JP 15654981 A JP15654981 A JP 15654981A JP 15654981 A JP15654981 A JP 15654981A JP S5858206 A JPS5858206 A JP S5858206A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- melting
- reducing
- temperature
- reducing gas
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
- C21B13/002—Reduction of iron ores by passing through a heated column of carbon
Abstract
Description
【発明の詳細な説明】
この発崩は、石炭等のブス化並びに還元鉄を溶解還元す
る溶解ガス化炉と、このガス化炉で生成したガスを利用
して鉄鉱石を還元する還元炉とを組合わせて銑鉄を製造
する°方法において、還元炉に吹込む還元ガスの温度を
制御する方法に関する。[Detailed Description of the Invention] This exploding occurs in a melting and gasifying furnace that turns coal into a lump and melts and reduces reduced iron, and a reducing furnace that reduces iron ore using the gas generated in this gasifier. The present invention relates to a method for controlling the temperature of reducing gas blown into a reducing furnace in a method for producing pig iron by combining the following methods.
前記の銑鉄製造方法は、この発明者らが先に提案（特願
Ｈ５６４６８９１０号）し九方法であって、高炉法に匹
敵する高生産性と高熱効率を達成し、かつ低品位の原料
の使用を可能とする最新の製銑法である。この製銑法は
、石炭等のガス化並びに還元鉄を溶解還元する溶解ガス
化炉で生成する高温の還元ガスを、溶解ガス化炉の装入
原料である還元鉄を製造する還元炉に吹込み、この還元
炉で製造した固体還元鉄を前記溶解ガス化炉で溶解還元
して溶融鉄を製造する方法である。The above-mentioned pig iron production method was first proposed by the present inventors (Japanese Patent Application No. H56468910), and it achieves high productivity and high thermal efficiency comparable to the blast furnace method, and uses low-grade raw materials. This is the latest ironmaking method that makes it possible to This ironmaking method blows high-temperature reducing gas produced in a melting and gasifying furnace that gasifies coal, etc. and melts and reduces reduced iron into a reducing furnace that produces reduced iron, which is the charging raw material for the melting and gasifying furnace. In this method, solid reduced iron produced in this reduction furnace is melted and reduced in the melting and gasification furnace to produce molten iron.
第１図はその製銑プロセスを示すもので、（１）は溶解
ガ、ス化炉、（２）は還元炉を示し、溶解ガス化炉（１
）Ｋ石炭（３）等を投入し、生成し九制温の還元ガフ（
４）を還元炉（２）Ｋ吹込み、炉上部から投入される粒
状鉄酸化物（３）を還元して粒状還元鉄を生成させ死後
、ガス取出口からガス（５）を回収し、炉下部の還元鉄
切出口（６）から取出された粒状還元鉄（７）を溶解ガ
ス化炉（１）で溶解して溶融鉄（８）を製造する方法で
ある。Figure 1 shows the ironmaking process. (1) shows the molten gas and sulfurizing furnace, (2) shows the reduction furnace, and the melting gasification furnace (1) shows the reduction furnace.
)K coal (3), etc. are input, and a reducing gaff (9 temperature control) is generated.
4) is injected into the reducing furnace (2), and the granular iron oxide (3) introduced from the upper part of the furnace is reduced to produce granular reduced iron. After death, the gas (5) is collected from the gas outlet and returned to the furnace. In this method, granular reduced iron (7) taken out from a lower reduced iron cutting port (6) is melted in a melting and gasifying furnace (1) to produce molten iron (8).
このようなプロセスにおいては、粒状鉄酸化物を還元す
る還元炉（２）に吹込む還元ガス温度を適正値に維持す
ることが操業上重要である。それは、以下に示す理由に
よる。In such a process, it is important for operation to maintain the temperature of the reducing gas blown into the reduction furnace (2) for reducing particulate iron oxide at an appropriate value. This is due to the reasons shown below.
粒状鉄酸化物等の還元に必要な還元ガス温度は約９００
℃が適正値であるが、この適正温度に対し±５０℃の巾
で還元ガス温度が変動すると、還元炉で製造する固体還
元鉄の還元率は、目標の８５−に対し＋５１１．−１０
−変化する。そして、このよう溶解しようとすると、還
元率の高い固体還元鉄が装入される時は負荷が軽い（装
入される固体還元鉄の温度が高く、また含有するＦｅＯ
が少ない）ので、生成する還元ガス温度、すなわち還元
炉に吹込む還元ガスの温度がますます高くな）、やがて
は還元炉内で固体還元鉄粒どうじが焼結し、クツスター
を形成して安定な切出しが阻害されるというトフプルを
生じる一方、還元率の低い固体還元鉄が装入される時は
負荷が重いので、生成する還元ガス温度はますます低く
なり、還元炉で製造する固体還元鉄の還元率がますます
低下することになり、溶解ガス化炉の溶解能力が低下し
冷え込むというトフプルが生じる。The reducing gas temperature required for reducing granular iron oxides, etc. is approximately 900°C.
℃ is the appropriate value, but if the reducing gas temperature fluctuates within a range of ±50℃ with respect to this appropriate temperature, the reduction rate of solid reduced iron produced in the reduction furnace will be +511. -10
-Change. When attempting to melt in this way, the load is light when solid reduced iron with a high reduction rate is charged (the temperature of the solid reduced iron charged is high, and the FeO
As a result, the temperature of the reducing gas produced (that is, the temperature of the reducing gas blown into the reduction furnace becomes higher and higher), the solid reduced iron grains eventually sinter in the reduction furnace, forming Kutsustar and becoming stable. On the other hand, when solid reduced iron with a low reduction rate is charged, the load is heavy, so the temperature of the reducing gas produced becomes lower and lower, and the solid reduced iron produced in the reduction furnace is As a result, the reduction rate of the melting and gasifying furnace becomes lower and lower, and the melting capacity of the melting and gasifying furnace decreases, resulting in a tofu pull.
従来、かかる対策として、溶解ガス化炉で生成する還元
ガスの温度が低下してき九場合には、還元炉の固体還元
鉄の切出し速度を遅くして還元率の低下を抑制し、かつ
溶解ガス化炉に装入する還元鉄量を減じると共に、還元
ガスの温度が上昇してきた場合には、固体還元鉄切出し
速度を早くして還元率の上昇を抑制するとともに、溶解
ガス化炉に装入する還元鉄量を増加する方法がとられて
いる。しかし、このような方法では、還元ガス温度が５
０℃′低下し九ときには、固体還元鉄切出し速度を約１
０−低下させる必要があり、約５−の還元ガス利用率の
悪化をきたす一方、還元ガス温度が５０℃低下したとき
Ｋは、固体還元鉄切出し速度を約５−低下さ讐る必要が
あり、還元ガス利用率を約２−程度しか向上させること
ができず、結果として、溶解ガス化炉で生成する還元ガ
ス温度の変動は、還元ガス利用率の悪化と生産性の低下
を引き起こすと共に、還元鉄切出し操作ミスが操業中断
に結びつくようなトフプルになるという、安定操業上の
問題をかかえていた。Conventionally, as a countermeasure against this problem, when the temperature of the reducing gas generated in the melting gasification furnace decreases, the cutting speed of solid reduced iron in the reduction furnace is slowed down to suppress the decrease in reduction rate, and when the temperature of the reducing gas generated in the melting gasification furnace decreases, In addition to reducing the amount of reduced iron charged into the furnace, if the temperature of the reducing gas rises, increase the cutting speed of solid reduced iron to suppress the increase in reduction rate, and charge it into the melting and gasification furnace. A method is being used to increase the amount of reduced iron. However, in this method, the reducing gas temperature is 5
When the temperature drops to 0°C, the solid reduced iron cutting rate is reduced to about 1
On the other hand, when the reducing gas temperature decreases by 50°C, it is necessary to reduce the solid reduced iron cutting rate by about 5 degrees. , it is possible to improve the reducing gas utilization rate by only about 2-2, and as a result, fluctuations in the temperature of the reducing gas generated in the melting and gasifying furnace cause deterioration of the reducing gas utilization rate and decrease in productivity. There was a problem with stable operation, where a mistake in cutting out reduced iron could result in a toppling that would lead to an interruption in operation.
この発明は、このような溶解ガス化炉で生成する還元ガ
スの温度変動が引き起こす還元ガス利用率の悪化と生産
性の低下を解消し、安定した操業を確保するためになさ
れたものであって、その発明の概要は、溶解ガス化炉と
還元炉との間に還元ガス温度調整装置を設置し、溶解ガ
ス化炉で生成した還元ガスの温度を前記調整装置により
一定化して還元炉に供給するようにしたものである。This invention was made in order to eliminate the deterioration of the reducing gas utilization rate and the decrease in productivity caused by temperature fluctuations of the reducing gas generated in such a melting gasifier, and to ensure stable operation. The outline of the invention is that a reducing gas temperature adjustment device is installed between a melting gasification furnace and a reduction furnace, and the temperature of the reducing gas generated in the melting gasification furnace is stabilized by the adjustment device and then supplied to the reduction furnace. It was designed to do so.
すなわち、この発明の要旨は、石炭等のガス化並びに還
元鉄の溶解還元を行なう溶解ガス化炉と、鉄鉱石を還元
する還元炉とを結合し、溶解ガス化炉で生成したガスを
還元炉の還元ガスとして用い、該還元炉で生成した固体
還元鉄を溶解ガス化炉で溶解して溶融鉄を得る銑鉄の製
造法において、上部にコークス装入口とガス取出口を、
はぼ中間部に格子を、格子下方に還元ガス吹込口と水蒸
気吹込口を、下部に水供給口゛と排出口をそれぞれ有し
、前記格子上にコークス充填層を、下部に水溜めを形成
してなる還元ガス温度調整装置を前記溶解ガス化炉と還
元炉との間に設置し、溶解ガス化炉で生成したガスを前
記装置の還元ガス吹込み口から吹込み、該装置内格子下
方で水蒸気と混合させ死後、該混合ガス中の水蒸気およ
び二酸化炭素とにより格子上コークスのガス化反応を生
起させ、その反応に伴なう吸熱を７利用し、水蒸気の量
を調整することにより混合ガスの温度を所定の温度に制
御してガス抜き口から還元ガスとして回収するとともに
、コークス燃焼により生成する灰分は格子゛を通して下
方の水溜めに回収し、排出することを特徴とする還元ガ
ス温度の制御方法である。That is, the gist of this invention is to combine a melting gasifier that gasifies coal, etc. and melting and reducing reduced iron with a reducing furnace that reduces iron ore, and to transfer the gas produced in the melting gasifier to the reducing furnace. In a pig iron production method in which molten iron is obtained by melting the solid reduced iron produced in the reduction furnace in a melting and gasification furnace, a coke charging inlet and a gas outlet are installed at the top.
It has a lattice in the middle, a reducing gas inlet and a steam inlet below the lattice, a water supply inlet and an outlet in the lower part, and a coke-filled bed on the lattice and a water reservoir in the lower part. A reducing gas temperature adjustment device made of After death, the gasification reaction of the coke on the lattice is caused by the water vapor and carbon dioxide in the mixed gas, and the absorption of heat accompanying the reaction is utilized to adjust the amount of water vapor. The reducing gas temperature is characterized in that the temperature of the gas is controlled to a predetermined temperature and recovered as reducing gas from the gas vent port, and the ash produced by coke combustion is collected through a grate into a water reservoir below and discharged. This is a control method.
以下、この発明の一実施例を図面に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.
第２図はこの発明の製銑プロセスを示すもので、＄１［
に示す従来のプロセスに還元ガス温度調整装置００を設
置し、この装置により還元ガスの温度を一定値に制御す
る方式である。この還元ガス温度ｍ整装置１ｆｔ（１０
は、第３図にその一例を示すごとく、上部にコークス装
入口（１０−１＞とガス取出口（１Ｇ−２）を、下部に
水供給口（１０−３＞と排出口（１０−４）をそれぞれ
有し、さらにほぼ中間部に設けた格子（１０−ｓ）の下
方に還元ガフ吹込口（１０−６）と水蒸気吹込口（１０
−７）を有し、前記格子（１０−５）上にコークス充填
層−）−を、格子下方に還元ガスと水蒸気の混合部も）
を、本体、下部に水溜めｌｃ）をそれぞれ形成してなる
密閉構造の装置である。Ｑっはガス取出口に設けられた
温度計測器、（６）は水蒸気供給配管（至）に設は九パ
ルプα４の開度制御回路である。Figure 2 shows the pig iron making process of this invention.
In this method, a reducing gas temperature adjustment device 00 is installed in the conventional process shown in Figure 1, and the temperature of the reducing gas is controlled to a constant value by this device. This reducing gas temperature adjustment device 1ft (10
As shown in Fig. 3, the coke charging port (10-1> and gas outlet (1G-2) are located at the top, and the water supply port (10-3> and discharge port (10-4) is located at the bottom). ), and a reducing gaff inlet (10-6) and a steam inlet (10-s) below the grid (10-s) provided approximately in the middle.
-7), a coke packed bed -)- on the grate (10-5), and a reducing gas and steam mixing section below the grate).
It is a device with a closed structure, which has a main body and a water reservoir lc) formed at the bottom. Q is a temperature measuring device installed at the gas outlet, and (6) is an opening control circuit for nine pulp α4 installed in the steam supply pipe (to).
すなわち、溶解ガス化炉（１）で生成し九還元ガス（４
）を前記温度＃ａ整装置αＱの還元ガス吹込口（１〇−
６）よシ吹込み、同時に水蒸気吹込口（１０−７）よシ
水蒸気（至）を吹込む。装置内に吹込まれた還元ガスと
水蒸気は、混合部（ｂ）で混合されて格子（１０−５）
上のコークス充填層（−内に流入し、下記に示すコーク
スのガス化反応を生起させる。That is, 9 reducing gases (4
) of the temperature #a adjustment device αQ (10-
6) At the same time, blow in steam (to) through the steam inlet (10-7). The reducing gas and water vapor blown into the device are mixed in the mixing section (b) and then passed through the grid (10-5).
The coke flows into the upper coke packed bed (-) and causes the coke gasification reaction shown below.
Ｈ，ｏ ＋Ｃ−１−Ｈ，＋ Ｃｏ （イ）こ
の反応は吸熱反応であるとともに、水蒸気吹込口（１０
−７）から吹込まれる水蒸気はＨ８とＣＯという還元ガ
スに転嫁される。そして、その水蒸気の量にみあって前
記イの反応が生じ、混合ガス（４）の温度が変化してガ
ス取出口（１０−２）より流出し還元炉（２）へ送られ
る。H,o +C-1-H,+Co (a) This reaction is an endothermic reaction, and a water vapor inlet (10
-7) The water vapor blown in is transferred to reducing gases such as H8 and CO. Then, the reaction (a) occurs depending on the amount of water vapor, the temperature of the mixed gas (4) changes, and the mixed gas (4) flows out from the gas outlet (10-2) and is sent to the reduction furnace (2).
従って、この発明では、水蒸気吹込口（１０−７）から
吹込む水蒸気の鼠を調整することにより、溶解ガス化炉
で生成する還元ガスの温度を自在に調整することができ
る。この温度調整は、ガスネ出口（１０−２）に設けた
温度計測器（ロ）で出口温度を測定し、還元炉（２）で
用いるに適した温度（約９００℃）になるようにパルプ
開度制御回路（２）により水蒸気の量を調整することに
よシ行なうことができる。なお、溶解ガス化炉（１）で
生成するガス温度は通常１０００〜１２００℃であるた
め、６．１記温度副整装誼αＱでは水蒸気によりその高
温ガスの温度を低下させることＫなる。Therefore, in this invention, the temperature of the reducing gas produced in the melting and gasifying furnace can be freely adjusted by adjusting the amount of steam blown in from the steam inlet (10-7). This temperature adjustment is performed by measuring the outlet temperature with a temperature measuring device (b) installed at the gas outlet (10-2), and opening the pulp to a temperature (approximately 900°C) suitable for use in the reduction furnace (2). This can be done by adjusting the amount of water vapor using the temperature control circuit (2). Incidentally, since the temperature of the gas produced in the melting and gasifying furnace (1) is usually 1000 to 1200°C, the temperature of the high-temperature gas is lowered by steam in 6.1 Temperature Adjustment αQ.
他方、前記イの反応によりコークス中の炭素が消耗し、
灰分が残るが、その灰分は格子（１０−５）を通って落
下し、下方の水ｍ ＃）（ｃ）に入ｐ、水υ→と混合さ
れて排出口（１０−４）から装置外に取出されるどとも
に、格子（１０−５）上のコークス消耗分はコークス装
入口（１０−１）から補給される。On the other hand, the carbon in the coke is consumed by the reaction (a),
Ash remains, but the ash falls through the grate (10-5), enters the water m#) (c) below, mixes with the water υ→, and exits the device from the outlet (10-4). At the same time, the consumed amount of coke on the grate (10-5) is replenished from the coke charging port (10-1).
α力は水と灰分の混合物、（至）はコークスを示す。Alpha power indicates a mixture of water and ash, and (to) indicates coke.
この発明法により、還元炉に吹込む還元ガスとして約５
ｏｘ７７ａ、 、平均温度１０５０℃、温度変動中ｉ５
０℃、成分力ＣＯ７５％、 Ｈ，２２％、 Ｃ０，２＄
１７）粗還元ガスを処理し、９００℃一定の還元ガスを
得るためには、溶解ガス化炉で生成した粗還元ガス温度
が例えば１０００℃の場合には、温度調整装置αＱに約
１０００ｖＨｒの水蒸気を吹込めばよく、このとき得ら
れる還元ガスの量は約＆３ＩＮＦＦｇ、）’Ｉｆ、とな
り、粗還元ガスの社よりも増加し、成分はＣｏ ７４５
１゜Ｈ，２２，６チ、ＣＯ！１嘩となる。また、消費す
るコークスの量は約１２５０ＫＶ／Ｈｒとなる。With this invention method, approximately 50% of reducing gas is blown into the reducing furnace
ox77a, , average temperature 1050℃, temperature fluctuation i5
0℃, component power CO75%, H,22%, C0.2$
17) In order to process the crude reducing gas and obtain a reducing gas constant at 900°C, if the temperature of the crude reducing gas generated in the melting and gasifying furnace is, for example, 1000°C, approximately 1000 vHr of water vapor is added to the temperature adjustment device αQ. The amount of reducing gas obtained at this time is approximately
1°H, 22, 6chi, CO! There will be one fight. Further, the amount of coke consumed is approximately 1250 KV/Hr.
一方、粗還元ガス温度が１０５０℃の場合には、約１６
３０ Ｉｆ／Ｈｒの水蒸気を吹込めばよく、この場合は
、約４．６ＫＮＷＰ／Ｈｒの還元ガスが得られ、成分は
Ｃ０７４−１Ｈ８２３チ、Ｃ０８１チとなり、コークス
消費量は約１６５０Ｙ４／Ｈｒとなる。On the other hand, when the crude reducing gas temperature is 1050°C, approximately 16
30 If/Hr of steam should be injected, and in this case, a reducing gas of about 4.6KNWP/Hr is obtained, the components are C074-1H823 and C081, and the coke consumption is about 1650Y4/Hr. .
そして、粗還元ガス温度の変動中±５０℃に対し、得ら
れる還元ガス温度の変動中を±１０℃以下にすることが
できる結果、還元炉（２）で生成する固体還元率の変動
中を±２−以下にすることができ、還元炉における切出
し速度の調整が不要となし、従来法に比べて約２ｑｋの
還元ガス利用率向上と、約４−の生産性の向上が達成で
きる。As a result of being able to keep the temperature of the obtained reducing gas within ±10°C, compared to the fluctuation of the crude reducing gas temperature of ±50°C, the fluctuation of the solid reduction rate produced in the reduction furnace (2) can be reduced to within ±10°C. ±2- or less, there is no need to adjust the cut-out speed in the reduction furnace, and compared to the conventional method, an improvement in reducing gas utilization rate of about 2 qk and an improvement in productivity of about 4- can be achieved.
以上説明したごとく、この発明によれば、石炭等のガス
化並びに還元鉄を溶解還元する溶解ガス化炉で生成する
還元ガスの温度変動に起因する還元ガス利用率の悪化と
生産性の低下を解消し、安定した。′！６能率操業を達
成することができる。As explained above, according to the present invention, the deterioration of the reducing gas utilization rate and the decrease in productivity caused by the temperature fluctuation of the reducing gas generated in the melting and gasifying furnace that gasifies coal, etc. and melts and reduces reduced iron can be prevented. resolved and stabilized. ′! 6 efficient operation can be achieved.
第１図は従来の溶解ガス化炉と應元炉による製銑プロセ
スの一例を示す系統図、第２図はこの発明の一実施例を
示す系統図、第３図は同上製銑１０セヌにおける還元ガ
ス温度ａｉｉｕｉａの一例を示す概略図である。
１・・・−溶解ガス化炉、２・・・還元炉、３・・・石
戻、４・・・還元ガス、５・・・ガス、６・・・還元鉄
切出口、７・・・粒状還元鉄、８・・・溶−鉄、 １０
・・・還元ガス一度調整装置、１０−１・・・コークス
装入口、１０−２・・・ガス取出口、１０−３−・・水
供給口、１０−４・・・排出口、１０−５・・・格子、
１０−６・・・１元ガス吹込口、１０−７−・・水蒸気
吹込口、１１・・・温度叶測器、１２・・・パルプ開度
制御回路、１・・・コークス充填層、ｂ−・・４合部、
ｃ ”・水溜め。
第２図Fig. 1 is a system diagram showing an example of a conventional iron making process using a melting gasification furnace and a smelting furnace, Fig. 2 is a system diagram showing an embodiment of the present invention, and Fig. 3 is a system diagram showing an example of the iron making process using a conventional melting gasification furnace and a smelting furnace. FIG. 2 is a schematic diagram showing an example of reducing gas temperature aiiiuia. 1... - Melting gasification furnace, 2... Reduction furnace, 3... Stone return, 4... Reducing gas, 5... Gas, 6... Reduced iron cutting port, 7... Granular reduced iron, 8... Molten iron, 10
...Reducing gas one-time adjustment device, 10-1...Coke charging inlet, 10-2...Gas outlet, 10-3-...Water supply port, 10-4...Discharge port, 10- 5... Lattice,
10-6...1 source gas inlet, 10-7-...steam inlet, 11...temperature measuring device, 12...pulp opening control circuit, 1...coke filled bed, b -... 4 joints,
c”・Water reservoir. Figure 2
Claims (1)
ガス化炉と、鉄鉱石を還元する還元炉とを結合し、溶解
ガス化炉で生成したガスを還元炉の還元ガスとして用い
、該還元炉で生成し九固体還元鉄を溶解ガス化炉で溶解
して溶融鉄を得る銑鉄の麺造法において、上部にコーク
ス装入口とガス取出口を、＃！！は“中間部に格子を、
格子下方に還元ガス吹込口と水蒸気吹込口を、下部に水
供給口と排出口をそれぞれ有し、前記格子上にコークス
充填層を、下部に水溜めを形成してなる還元−Ｘヌ温度
調整装置を前記溶解ガス化炉と還元炉との間に設置し、
溶解ガス化炉で生成したガスを前記装置の還元ガス吹込
口から吹込み、該装置内格子下方で水蒸気と混合させた
後、該混合ガス中の水蒸気および二酸化炭素とにより格
子上コークスのガス化反応を生起させ、その反応に伴な
う吸熱を利用し、水蒸気の量を調整することにより混合
ガスのする灰分は格子を通して下方の水溜めに回収し、
排出することを特徴とする銑鉄の製造法における還元ブ
ス温度の制御方法。A melting gasification furnace that gasifies coal, etc. and melts and reduces reduced iron, and combines a melting gasifier and a reduction furnace that reduces iron ore, and uses the gas produced in the melting gasifier as the reducing gas in the reduction furnace. In the pig iron noodle manufacturing method in which molten iron is obtained by melting the nine solid reduced iron produced in the reduction furnace in the melting and gasification furnace, a coke charging inlet and a gas outlet are installed at the top. ! “With a lattice in the middle,
A reduction-X temperature control system having a reducing gas inlet and a steam inlet below the grid, a water supply port and a water outlet at the bottom, a coke-filled bed on the grid, and a water reservoir at the bottom. A device is installed between the melting gasification furnace and the reduction furnace,
The gas generated in the melting gasifier is injected from the reducing gas inlet of the device, mixed with steam below the grate in the device, and then the coke on the grate is gasified by the water vapor and carbon dioxide in the mixed gas. The ash produced by the mixed gas is collected through the grid into the water reservoir below by causing a reaction and adjusting the amount of water vapor by utilizing the heat absorption accompanying the reaction.
A method for controlling reduction bus temperature in a pig iron manufacturing method characterized by discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15654981A JPS5858206A (en) | 1981-09-30 | 1981-09-30 | Controlling method for temperature of reducing gas in production of pig iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15654981A JPS5858206A (en) | 1981-09-30 | 1981-09-30 | Controlling method for temperature of reducing gas in production of pig iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5858206A true JPS5858206A (en) | 1983-04-06 |
Family
ID=15630221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15654981A Pending JPS5858206A (en) | 1981-09-30 | 1981-09-30 | Controlling method for temperature of reducing gas in production of pig iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5858206A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268707A (en) * | 1985-09-20 | 1987-03-28 | 株式会社 鴻池組 | Manufacture of cement paste-mortar and concrete |
| JPS63166744A (en) * | 1986-11-27 | 1988-07-09 | ヴセソジユツニイ ナウチノ−イスレドヴアテルスキイ インステイツウト トランスポロテノゴ ストロイテルステヴア （ツニイス） | Method of preparing make-up material for high slump value concrete blend |
| JPH052380U (en) * | 1992-06-10 | 1993-01-14 | 有限会社ジエネラル・エンヂニヤリング | Laser processable connector |
| WO1998001586A1 (en) * | 1996-07-10 | 1998-01-15 | Voest-Alpine Industrieanlagenbau Gmbh | Process for producing a reduction gas for reduction of metal ore |
| WO1998001587A1 (en) * | 1996-07-10 | 1998-01-15 | Voest-Alpine Industrieanlagenbau Gmbh | Process for producing a reduction gas for reduction of metal ore |
| WO1999035294A1 (en) * | 1998-01-08 | 1999-07-15 | Bodo Wolf | Method for producing pig iron |
| CN1064084C (en) * | 1996-07-10 | 2001-04-04 | 奥地利钢铁联合企业阿尔帕工业设备制造公司 | Process for producing a reduction gas for reduction of metal ore |
| WO2011076489A1 (en) * | 2009-12-23 | 2011-06-30 | Siemens Vai Metals Technologies Gmbh | Method and device for providing reduction gas from generator gas |
-
1981
- 1981-09-30 JP JP15654981A patent/JPS5858206A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268707A (en) * | 1985-09-20 | 1987-03-28 | 株式会社 鴻池組 | Manufacture of cement paste-mortar and concrete |
| JPH0371004B2 (en) * | 1985-09-20 | 1991-11-11 | Konoikegumi Kk | |
| JPS63166744A (en) * | 1986-11-27 | 1988-07-09 | ヴセソジユツニイ ナウチノ−イスレドヴアテルスキイ インステイツウト トランスポロテノゴ ストロイテルステヴア （ツニイス） | Method of preparing make-up material for high slump value concrete blend |
| JPH052380U (en) * | 1992-06-10 | 1993-01-14 | 有限会社ジエネラル・エンヂニヤリング | Laser processable connector |
| US6379420B1 (en) | 1996-07-10 | 2002-04-30 | Voest-Alpine Industrieanlagenbau Gmbh | Method and plant for producing a reducing gas serving for the reduction of metal ore |
| WO1998001587A1 (en) * | 1996-07-10 | 1998-01-15 | Voest-Alpine Industrieanlagenbau Gmbh | Process for producing a reduction gas for reduction of metal ore |
| CN1064084C (en) * | 1996-07-10 | 2001-04-04 | 奥地利钢铁联合企业阿尔帕工业设备制造公司 | Process for producing a reduction gas for reduction of metal ore |
| CN1068057C (en) * | 1996-07-10 | 2001-07-04 | 奥地利钢铁联合企业阿尔帕工业设备制造公司 | Process for producing a reduction gas for reduction of metal ore |
| WO1998001586A1 (en) * | 1996-07-10 | 1998-01-15 | Voest-Alpine Industrieanlagenbau Gmbh | Process for producing a reduction gas for reduction of metal ore |
| WO1999035294A1 (en) * | 1998-01-08 | 1999-07-15 | Bodo Wolf | Method for producing pig iron |
| US6458181B1 (en) | 1998-01-08 | 2002-10-01 | Bodo Wolf | Method for producing pig iron |
| WO2011076489A1 (en) * | 2009-12-23 | 2011-06-30 | Siemens Vai Metals Technologies Gmbh | Method and device for providing reduction gas from generator gas |
| CN102656284A (en) * | 2009-12-23 | 2012-09-05 | 西门子Vai金属科技有限责任公司 | Method and device for providing reduction gas from generator gas |
| JP2013515850A (en) * | 2009-12-23 | 2013-05-09 | シーメンス・ファオアーイー・メタルズ・テクノロジーズ・ゲーエムベーハー | Method and apparatus for supplying reducing gas from generator gas |
| AU2010335453B2 (en) * | 2009-12-23 | 2014-05-22 | Primetals Technologies Austria GmbH | Method and device for providing reduction gas from generator gas |
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