JPS5857496A - Coal gasification by using molten iron and slag - Google Patents
Coal gasification by using molten iron and slagInfo
- Publication number
- JPS5857496A JPS5857496A JP15654881A JP15654881A JPS5857496A JP S5857496 A JPS5857496 A JP S5857496A JP 15654881 A JP15654881 A JP 15654881A JP 15654881 A JP15654881 A JP 15654881A JP S5857496 A JPS5857496 A JP S5857496A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- furnace
- molten iron
- coal
- iron
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/57—Gasification using molten salts or metals
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、転炉、電気炉等から排出される溶融スラグ
と溶鉄を用いる石炭のガス化方法に関し、石炭のガス化
と共に、多量のＦｅＯ１Ｍｎ０を含んでいる製鋼スラグ
の有効利用をはかることを目的とするものである。Detailed Description of the Invention The present invention relates to a coal gasification method using molten slag and molten iron discharged from a converter, electric furnace, etc. The purpose is to make effective use of it.
転炉、電気炉等から排出されるスラグは、多量のＦｅ０
１Ｍｎ０を含んでいるにもかかわらず、これらの金属成
分の回収は従来はとんど行われていないのみならず、冷
却凝固後も十分な用途は見い出されていなかった。しか
し、最近になって、この製鋼スラグを石炭のガス化に活
用する方法が提案され、石炭のガス化と製鋼スラグの処
理を同時に実施し得る石炭のガス化法の実用化が進めら
れている。Slag discharged from converters, electric furnaces, etc. contains a large amount of Fe0.
Although it contains 1Mn0, recovery of these metal components has not been carried out in the past, and even after cooling and solidification, sufficient uses have not been found. However, recently, a method of utilizing this steelmaking slag for coal gasification has been proposed, and progress is being made in the practical application of coal gasification methods that can simultaneously perform coal gasification and steelmaking slag treatment. .
この石炭のガス化方法は、高温の溶鉄中に石炭をガス化
剤と共に吹込むことによりガス化する方法であり、鉄浴
ガス化法と呼ばれている。この鉄浴ガス化法では、石炭
をガス化する際に多量の予剰熱が発生するため、この予
剰熱を利用して製鋼スラグ中のＦｅＯ、ＭｎＯ等を溶鉄
中に溶解還元させることができ、石炭のガス化と共に製
鋼スラグの有効利用をはかることができるという利点を
有する。しかし、従来の、溶鉄と溶融スラグを用いる石
炭のガス化方法は、スラグの改質、スラグの炉外取出し
、余剰熱の有効利用技術が十分に確立さ゛れておらず、
これらの技術的改善が望まれていた。This coal gasification method is a method of gasifying coal by blowing it together with a gasifying agent into high-temperature molten iron, and is called an iron bath gasification method. In this iron bath gasification method, a large amount of preheat is generated when coal is gasified, so it is possible to use this preheat to dissolve and reduce FeO, MnO, etc. in steelmaking slag into molten iron. This has the advantage that it is possible to gasify coal and make effective use of steelmaking slag. However, in the conventional coal gasification method using molten iron and molten slag, the technology for reforming slag, removing slag from the furnace, and effectively utilizing surplus heat has not been sufficiently established.
These technical improvements were desired.
この発明は、かかる現状に鑑みてなされたものであり、
炉内のスラグを連続的に炉外に取出すとともに、余剰熱
を利用してスラグの改質を行ない、粒状スラグとして回
収可能な石炭のガス化方法を提案するものである。This invention was made in view of the current situation,
This paper proposes a coal gasification method in which the slag in the furnace is continuously taken out of the furnace, the surplus heat is used to reform the slag, and the slag can be recovered as granular slag.
すなわち、この発明は、高温の溶鉄が貯えられた溶解炉
に、鉄鋼溶製時に発生した固体状の製鋼スラグと石炭お
よび酸素、水蒸気等のガス化剤を非浸漬上吹きランスよ
り吹込むことによって連続的に一酸化炭素および水素を
主成分とするガスを得るとともに、浴面浮上子ラグおよ
び鉄浴面の上下変動を防止し得るように炉底または炉壁
より炉内にガスを吹込み、製鋼スラグ中のＦｅ、Ｍｎ、
Ｐを溶鉄中に移行せしめた変成スラグを炉壁より連続的
に炉外に取出し、該スラグを水蒸気で説硫処理すること
を特徴とするものである。That is, the present invention involves injecting solid steelmaking slag generated during steel melting, coal, and gasifying agents such as oxygen and steam into a melting furnace in which high-temperature molten iron is stored through a non-immersed top-blowing lance. Gas is blown into the furnace from the furnace bottom or furnace wall so as to continuously obtain gas containing carbon monoxide and hydrogen as the main components, and to prevent vertical fluctuations of the bath surface flotation lug and the iron bath surface. Fe, Mn, in steelmaking slag
This method is characterized in that metamorphosed slag in which P has been transferred into molten iron is continuously taken out of the furnace from the furnace wall, and the slag is subjected to sulfurization treatment with steam.
高温の溶鉄が貯えられる溶解炉は、石炭の含有する灰分
および副原料、並びに製鋼スラグによる侵食に耐え得る
ために、塩基性（マグネシア、ドロマイト）、高アルミ
ナ、クロム−マグネシア等の耐火性物質で内張すされる
。また、炉の内径は溶鉄、溶融スラグ、石炭等投入原料
、ガス化剤の均一な混合に適し、さらに生成ガス量の放
散熱蟻を低下させることが必要であり、円筒、回転楕円
体、多角筒等が適する。The melting furnace where high-temperature molten iron is stored is made of refractory materials such as basic (magnesia, dolomite), high alumina, chromium-magnesia, etc., in order to withstand erosion by ash and auxiliary materials contained in coal and steelmaking slag. It is lined. In addition, the inner diameter of the furnace must be suitable for uniformly mixing molten iron, molten slag, coal, and other input materials, and the gasifying agent, and must also reduce the amount of heat dissipated in the amount of generated gas. A cylinder etc. is suitable.
炉内には、常時溶鉄が貯えられ、その浴面高さは周期的
な一定の巾に保たれる。通常、この浴面上には非浸漬上
吹ランスを介して供給される微粉炭中の灰分および投入
スラグ、副京料に由来する溶融スラグが一定の１−厚を
成して形成される。Molten iron is constantly stored in the furnace, and the bath surface height is periodically maintained at a constant width. Usually, the ash in the pulverized coal supplied via a non-immersed top blowing lance, the input slag, and the molten slag derived from the submerged coal are formed on the bath surface to a certain thickness.
この溶解炉の炉壁には、排滓口を有するスラグ加熱室が
一体的に設けられ、さらにスラグ加熱室にはスラグ改質
のための脱硫室が連設され、１記スラグ加熱室と炉内間
は予定される溶鉄浴面付近に開けられた連通口で連通さ
れており、連通口の上方には耐火物の仕切板が設けられ
ている。また齢記述通口の下方から炉内にガスを吹込ん
で、連通口の炉内側に鉄浴および浴面スラグの上昇竺を
形成するようにし、この上昇流と仕切板の働きにより、
微粉炭を含むガス止剤ジェットにより形成される著しい
溶鉄および浴面スラグの上下変動がスラグ加熱室まで伝
わらないようにし、脱硫室へのガス吹出しおよび溶鉄流
出が防止されるようになっている。A slag heating chamber having a slag exhaust port is integrally provided on the furnace wall of this melting furnace, and a desulfurization chamber for slag reforming is connected to the slag heating chamber, and the slag heating chamber and furnace The interior spaces are communicated through a communication port opened near the surface of the planned molten iron bath, and a refractory partition plate is installed above the communication port. In addition, gas is blown into the furnace from below the age description port to form a rising line of iron bath and bath slag inside the furnace at the communication port, and due to this upward flow and the action of the partition plate,
Significant vertical fluctuations of the molten iron and bath surface slag formed by the gas stopper jet containing pulverized coal are prevented from being transmitted to the slag heating chamber, thereby preventing gas blowing into the desulfurization chamber and molten iron from flowing out.
スラグ加熱室にはスラグ凝固防止を目的とした加熱バー
ナが設けである。ただし、製鋼スラグの投入量の少ない
場合や操業立上がり期以外では、溶鉄の保湿効果が大で
あり、特に加熱バーナを必要としない。The slag heating chamber is equipped with a heating burner for the purpose of preventing slag solidification. However, when the input amount of steelmaking slag is small or when the operation is not starting up, the moisturizing effect of molten iron is large and a heating burner is not particularly required.
微粉炭等の、固体原料は、２個以、Ｅのホッパーおよび
ロータリーフィーダからなる供給装置により、水蒸気、
二酸化炭素、窒素、生成ガス等をキャリアーガスとして
流動状態で、非浸漬ランスを介して炉上方より浴面に連
続的に供給される。なお、操業初期に配管が冷えている
場合は、水蒸気に〜よる固体原料の供給は困難であるが
、加熱窒素で供給した後、水蒸気により原料輸送すれば
、これが可能である。Solid raw materials such as pulverized coal are converted into water vapor,
Carbon dioxide, nitrogen, produced gas, etc. are continuously supplied to the bath surface from above the furnace via a non-immersed lance in a fluidized state as a carrier gas. Note that if the piping is cold at the beginning of operation, it is difficult to supply the solid raw material with steam, but this is possible if the raw material is transported with steam after being supplied with heated nitrogen.
酸素は水冷の非浸漬上吹きランスによって音速以上の高
速で吹付けてスラグおよび溶鉄を十分攪拌する必要があ
る。この場合、酸素は微粉炭等に接近して吹込んだ方が
反応効率上好ましく、さらに多重管ランスを用いて酸素
と固体原料を吹込む方法をとれば、設備的にも簡素化で
きるのでより一層好ましい。Oxygen must be blown at high speeds higher than the speed of sound using a water-cooled, non-immersed top blowing lance to sufficiently stir the slag and molten iron. In this case, it is better to inject oxygen close to the pulverized coal etc. in terms of reaction efficiency, and if you use a method of injecting oxygen and solid raw materials using a multi-pipe lance, it is easier to simplify the equipment. More preferred.
製・鋼スラグは、石炭ガス化炉の固体原料の一部として
微粉炭と共に混合あるいは分離してホッパーに貯えられ
てい、る。そして、微粉炭および酸素、水蒸気と共に非
浸漬ランスを介して鉄浴面に供給される。Steel slag is mixed or separated with pulverized coal and stored in a hopper as part of the solid raw material for a coal gasifier. The pulverized coal, oxygen, and steam are then supplied to the iron bath surface through a non-immersed lance.
操業中、石炭中の灰分に由来するＡムα、 Ｓｉｎ。During operation, Amu α, Sin derived from the ash content in the coal.
は製鋼スラグに溶解し、さらに副原料（Ｃａ ０１Ｃａ
ω。is dissolved in steelmaking slag, and additional raw material (Ca 01Ca
ω.
等）の投入を行なってスラグ成分は所定の値に調整され
る。この後、スラグは加熱１Ｌ′および脱硫室を通り炉
外に連続的に取出される。脱硫室ではスラグに水蒸気を
吹付けることにより脱硫が行われる。このスラグ脱硫に
用いる水蒸気は、溶解炉の炉体周壁にボイラーチューブ
を配管することにより、余剰放散熱により供給すること
ができる。また、脱硫されたスラグは水滓としたのち炉
外に取出すことも可能である。etc.), the slag component is adjusted to a predetermined value. Thereafter, the slag passes through the heating 1L' and desulfurization chambers and is continuously taken out of the furnace. In the desulfurization chamber, desulfurization is performed by spraying steam onto the slag. The steam used for this slag desulfurization can be supplied by surplus dissipated heat by piping a boiler tube to the peripheral wall of the furnace body of the melting furnace. Furthermore, the desulfurized slag can be turned into water slag and then taken out of the furnace.
次に、この発明法を実施するための装置の一例を図面に
基づいて説明する。Next, an example of an apparatus for carrying out the method of the invention will be explained based on the drawings.
（１）は溶解炉であって、炉口部には性成ガス回収フー
ド（２）を有し、炉側壁部に仕切板（３）を有する連通
口（４）を介して排滓口（６）付きスラグ加熱室（５）
および脱硫室（））が連設しである。この溶解炉（１）
内には連通口（４）のほぼ中間高さ位置の所まで溶鉄（
８）が貯えられ、原料、酸素等は非浸漬上吹きランス（
ｓ）により吹込まれる。原料はロータリーフィーダ付番
供給ホッパー（１０１より連続的に切出され、窒素等キ
ャリアーガスにより流動状態で炉内に供給される。(1) is a melting furnace, which has a synthetic gas recovery hood (2) at the furnace mouth, and a slag exhaust port ( 6) Slag heating chamber with (5)
and a desulfurization chamber ()) are installed in series. This melting furnace (1)
Inside, molten iron (
8) is stored, and raw materials, oxygen, etc. are stored in a non-immersed top blowing lance (
s). The raw material is continuously cut out from a rotary feeder numbered supply hopper (101) and is supplied into the furnace in a fluidized state by a carrier gas such as nitrogen.
供給ホッパーＯαには微粉炭、製鋼スラグおよびｃａｏ
、 ＣａＣＯ５等の副原料の混合物が装入されている
。ランス（９）は例えば中心を微粉炭、製鋼スラグ等の
固体原料が、その外側を酸素が流れ、さらにその外側を
冷却水が流れる構造の多重管ランスを用いることができ
る。The supply hopper Oα contains pulverized coal, steelmaking slag, and cao.
A mixture of auxiliary raw materials such as , CaCO5, etc. is charged. As the lance (9), for example, a multi-pipe lance having a structure in which a solid raw material such as pulverized coal or steelmaking slag flows through the center, oxygen flows around the outside, and cooling water flows around the outside can be used.
（１１）は鉄浴面および浴面浮上スラグの上下変動を防
止するためのガス吹込みノズル、（ｌ匂はタップ４・−
ル、（ｓ−１）は加熱バーナ、（７−１）は水蒸１吹込
みノズル、０坤は水滓回収槽、舖は熱交換器、０１は集
塵機、輛はガスホルダーをそれぞれ示″ｔ。(11) is a gas blowing nozzle for preventing vertical fluctuations of the iron bath surface and the slag floating on the bath surface;
(s-1) is a heating burner, (7-1) is a water vapor injection nozzle, 0 is a water slag collection tank or heat exchanger, 01 is a dust collector, and 蛛 is a gas holder. t.
０乃は炉体周壁に配管したボイラーチューブであり。0no is the boiler tube piped to the peripheral wall of the furnace body.
ガス化の際の余剰放散熱を利用してスラグ脱硫用の水蒸
気を供給する。The excess heat dissipated during gasification is used to supply steam for slag desulfurization.
すなわち、溶解炉（１）内に貯えられた溶鉄（８）中に
、非浸漬上吹きランス（９）から微粉炭、製鋼スラグお
よび副原料を酸素と共に高速で吹込むと、鉄浴中で熱分
解が起こりＣ０１Ｈ１主体の粗ガスが生成する。That is, when pulverized coal, steelmaking slag, and auxiliary materials are injected at high speed with oxygen into the molten iron (8) stored in the melting furnace (1) from the non-immersed top blowing lance (9), heat is generated in the iron bath. Decomposition occurs and crude gas consisting mainly of C01H1 is produced.
この時発生する高温の熱により、微粉炭と同時に吹込ま
れた製鋼スラグ中のＦｅ０１Ｍｎ０はほとんど還元され
、鉄浴中に溶解する。Due to the high temperature heat generated at this time, most of the Fe01Mn0 in the steelmaking slag, which was injected at the same time as the pulverized coal, is reduced and dissolved into the iron bath.
生成ガスは回収フード（２）より炉外に取出され、熱交
換器（１４で顕熱を回収するとともに、集塵機−で除塵
された後、ガスホルダー（１〜に貯えられる。The produced gas is taken out of the furnace from the recovery hood (2), recovers sensible heat in a heat exchanger (14), removes dust in a dust collector, and then is stored in gas holders (1 to 1).
一方、炉内の変成スラグ賭は、溶鉄と共に上下に約２０
０ｆ１以上の変動中で揺れるが、ガス吹込みノズル（１
１，より吹込まれるガス（ＣＯガス等）のため連通口（
４）近くでは揺れ巾は５０１１１Ｊｌ以下に減少し、さ
らに（ｌ切板（３）の効果も加わって、スラグ加熱室（
６）における浴面の上下変動はほとＡ７どなくなる。On the other hand, the metamorphosed slag inside the furnace is about 20cm above and below along with the molten iron.
The gas blowing nozzle (1
1. A communication port (
4) Nearby, the swing width decreased to less than 50111 Jl, and with the addition of the effect of the cutting plate (3), the slag heating chamber (
The vertical fluctuation of the bath surface in 6) is almost completely eliminated.
加熱室内のスラグは、適宜スラグ加熱バーナ（Ｓ−１）
により加熱されるので、流動性を失なうことなくスラグ
脱硫室（７）に送ることができる。排滓口（６）をオー
バーフローして排出したスラグは、スラグ脱硫室（７）
においてノズル（７−１）より吹込まれる水蒸気により
脱硫され改質される。改質後のスラグは、冷却水０碑に
より水滓−となって回収される。The slag in the heating chamber is appropriately heated by a slag heating burner (S-1).
Since the slag is heated by the slag, it can be sent to the slag desulfurization chamber (7) without losing its fluidity. The slag discharged by overflowing the slag outlet (6) is transferred to the slag desulfurization chamber (7).
In the step, the water vapor is desulfurized and reformed by the steam blown from the nozzle (7-1). The reformed slag is recovered as water slag by cooling water.
次に、この発明の実施例について説明する。Next, embodiments of the invention will be described.
〔実施例）
図面に示すガス化装置を用い、溶解炉内に温度１５００
°Ｃの溶鉄を２００トン貯え、多重管ランスにより依粉
炭、製鋼スラグ、石灰および酸素をそれぞれ６４ ｔ／
ｈｒ１６０００ｋｇ／ｈｒ、 ２５００＆９／ｈｒ 。[Example] Using the gasifier shown in the drawing, the melting furnace was heated to a temperature of 1,500 yen.
Store 200 tons of molten iron at °C, and use multiple pipe lances to store pulverized coal, steelmaking slag, lime, and oxygen at 64 tons each.
hr16000kg/hr, 2500&9/hr.
４．５ Ｘ １０４ Ｎｍ、’ｈｒ吹込んだ。なお、操
業中の鉄浴温度は、水蒸気の添加量を制御して１４００
〜１５００℃に保った。また、スラグ塩基度は１４に保
持した。また、炉内には鉄浴面おＪびスラグの上下変動
を抑制するため、ＣＯガスを３．５Ｎｄ／ｈ ｒ吹込ん
だ。Injected 4.5 x 104 Nm,'hr. The temperature of the iron bath during operation can be adjusted to 1400℃ by controlling the amount of water vapor added.
The temperature was maintained at ~1500°C. Further, the slag basicity was maintained at 14. In addition, CO gas was injected into the furnace at 3.5 Nd/hr in order to suppress vertical fluctuations of the iron bath surface and slag.
炉内のスラグは加熱室において適宜バーナｔこより加熱
し、脱硫室において水蒸気を添加して脱硫し改質した後
、水滓として回収した。The slag in the furnace was appropriately heated with a burner T in a heating chamber, desulfurized and reformed by adding steam in a desulfurization chamber, and then recovered as water slag.
＃Ｉ１表には操業前と操業後の鉄浴の組成を、第２表に
は製鋼スラグの組成を、第３表には生成ガス組成を、第
４表には改質前と改質後のスラグ組成をそれぞれ示す。#I1 Table shows the composition of the iron bath before and after operation, Table 2 shows the composition of steelmaking slag, Table 3 shows the produced gas composition, and Table 4 shows the composition before and after reforming. The slag compositions are shown below.
得られた生成ガス量は１４＞１０’ Ｎｄ／ｂｒ １回
収した水滓ノ量は７０００Ｑ／ｈｒであった。The amount of generated gas obtained was 14>10' Nd/br.The amount of water slag recovered was 7000 Q/hr.
第１表 鉄浴組成 （％）
第２表 製鋼スラグ組成（％）
第３表 生成ガス植成＜％）
第４表 スラグ組成（％）
上記第１表より、鉄浴中Ｆｅ 、 Ｍｎ、 Ｐはそれぞ
れ上昇し、スラグ中のｐｅαＭｎＯ，Ｐ＝ Ｏｓが鉄浴
中に溶解還元されたことがわかる。また、第４表より、
スラグに水蒸気を添加することにより、スラグ中Ｓは５
．５９６から０．５５％に大巾に減少し、効果的に脱硫
されたことがわかる。Table 1 Iron bath composition (%) Table 2 Steelmaking slag composition (%) Table 3 Produced gas planting <%) Table 4 Slag composition (%) From Table 1 above, Fe, Mn, P in the iron bath It can be seen that peαMnO and P=Os in the slag were dissolved and reduced in the iron bath. Also, from Table 4,
By adding steam to the slag, S in the slag can be reduced to 5.
．． It can be seen that the content decreased significantly from 596% to 0.55%, indicating that desulfurization was effective.
以上説明したごとく、この発明法によれば、石グ中のＦ
ｅＯ、ＭｎＯｓ Ｐｒｏｓを溶鉄中に溶解還元させるこ
とができる上、操業を停止させることなくガス化炉内の
スラグを連続的に炉外に取出して改質することができ、
製鋼スラグを水−等セメント用原料として用いることが
できる。また、スラグ改質のための水蒸気はガス化炉の
余剰熱を利用して供給することができるので経済的であ
る。As explained above, according to this invention, F in stone
eO, MnOs Pros can be dissolved and reduced in molten iron, and the slag in the gasifier can be continuously taken out of the furnace and reformed without stopping the operation.
Steel slag can be used as a raw material for cement, such as water. In addition, steam for slag reforming can be supplied using surplus heat of the gasifier, which is economical.
図面はこの発明法を実施するための装置の一例を示す概
略図である。
１−・溶解炉、２・・・ガス回収フード、３−仕切板、
４・・・連通口、５−・スラグ加熱室、６・・・排滓口
、７・−スラグ脱硫室、８・・・溶鉄、９・・・ランス
、１０・・・ホッパー、１１・・・ガス吹込みノズル、
１３・−水滓回収槽、１４・・・熱交換器、１５・・・
集塵機、１６・・・ガスホルダー１７−ポイラーチ、−
ブ、１８−・スラグ、２０・・・水滓。
出願人 住友金属工業株式会社
代理人 押 １） 良 久The drawing is a schematic diagram showing an example of an apparatus for carrying out the method of this invention. 1- Melting furnace, 2... Gas recovery hood, 3- Partition plate,
4... Communication port, 5-- Slag heating chamber, 6... Slag outlet, 7-- Slag desulfurization chamber, 8... Molten iron, 9... Lance, 10... Hopper, 11...・Gas blowing nozzle,
13.-Slag collection tank, 14.. Heat exchanger, 15..
Dust collector, 16... Gas holder 17-Poilerch,-
Bu, 18-・Slag, 20... Water slag. Applicant Sumitomo Metal Industries Co., Ltd. Agent Oshi 1) Yoshihisa
Claims (1)
した固体状の製鋼スラグと石炭および酸素、水蒸気等の
ガス化剤を非浸漬上吹ランスにより吹込むことによって
連続的に一酸化炭素および水素を主成分とするガスを得
るとともに、浴面浮上スラグおよび鉄浴面の上下変動を
防止し得るように炉底または炉壁より炉内に不活性ガス
を吹込み、製鋼スラグ中のＦｅ ｓ ＭＬ Ｐを溶鉄中
に移行せしめた変成スラグを炉壁より連続的に炉外に取
出し、該スラグを水蒸気で脱硫処理することを特徴とす
る溶鉄と溶融スラグを用いる石炭のガス化方法。゛Continuous monoxide oxidation is achieved by injecting solid steelmaking slag generated during steel melting, coal, and gasifying agents such as oxygen and steam into a melting furnace that stores high-temperature molten iron using a non-immersed top blowing lance. In addition to obtaining gas containing carbon and hydrogen as main components, inert gas is blown into the furnace from the bottom or wall of the furnace to prevent slag floating on the bath surface and vertical fluctuations of the iron bath surface. A coal gasification method using molten iron and molten slag, characterized in that metamorphosed slag in which Fe s MLP has been transferred into molten iron is continuously taken out of the furnace from the furnace wall, and the slag is desulfurized with steam.゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15654881A JPS5857496A (en) | 1981-09-30 | 1981-09-30 | Coal gasification by using molten iron and slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15654881A JPS5857496A (en) | 1981-09-30 | 1981-09-30 | Coal gasification by using molten iron and slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5857496A true JPS5857496A (en) | 1983-04-05 |
Family
ID=15630198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15654881A Pending JPS5857496A (en) | 1981-09-30 | 1981-09-30 | Coal gasification by using molten iron and slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5857496A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373313A (en) * | 2001-01-17 | 2002-09-18 | Linston Ltd | Materials introduced by lance into furnace |
| CN111057810A (en) * | 2019-11-25 | 2020-04-24 | 中国石油化工股份有限公司 | Method for removing impurity iron in gasified slag |
-
1981
- 1981-09-30 JP JP15654881A patent/JPS5857496A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373313A (en) * | 2001-01-17 | 2002-09-18 | Linston Ltd | Materials introduced by lance into furnace |
| CN111057810A (en) * | 2019-11-25 | 2020-04-24 | 中国石油化工股份有限公司 | Method for removing impurity iron in gasified slag |
| CN111057810B (en) * | 2019-11-25 | 2021-10-08 | 中国石油化工股份有限公司 | Method for removing impurity iron in gasified slag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4566904A (en) | Process for the production of iron | |
| JP3058039B2 (en) | Converter steelmaking method | |
| US7914765B2 (en) | Reactor and process for the continuous production of hydrogen based on steam oxidation of molten iron | |
| JPS62263907A (en) | Two-stage melt reduction of iron ore | |
| JPS621994B2 (en) | ||
| JPH01246311A (en) | Production of gas and molten iron in iron bath reactor | |
| NO142312B (en) | PROCEDURE FOR MANUFACTURING LIQUID RAJJAR | |
| GB2182059A (en) | Method and apparatus for producing molten iron using coal | |
| JP5039945B2 (en) | Method and apparatus for producing pig iron or fluid primary iron from charges containing iron ore | |
| JP2002161303A (en) | Method and equipment for utilizing gas discharged from melting reduction furnace | |
| SU1009279A3 (en) | Method for producing steel in converter | |
| US5135572A (en) | Method for in-bath smelting reduction of metals | |
| US5542963A (en) | Direct iron and steelmaking | |
| JP2527914B2 (en) | Smelting of non-ferrous sulfide | |
| JPS5857496A (en) | Coal gasification by using molten iron and slag | |
| US4540432A (en) | Continuous process of melting sponge iron | |
| JP5439978B2 (en) | Melting reduction method | |
| US4553742A (en) | Apparatus for generating a reducing gas | |
| JPS6046349A (en) | Refining lance | |
| NO844802L (en) | PROCEDURE AND DEVICE FOR REDUCTION OF OXYDE MATERIAL | |
| JPH01147009A (en) | Melting and reducing method | |
| AU708255B2 (en) | Direct iron and steelmaking | |
| JPS58171515A (en) | Method and device for production of pig iron | |
| JPH01162711A (en) | Smelting reduction method | |
| JPS5881909A (en) | Steel making process |