JPS61139609A - Oxygen enriching method of industrial furnace - Google Patents
Oxygen enriching method of industrial furnaceInfo
- Publication number
- JPS61139609A JPS61139609A JP59261746A JP26174684A JPS61139609A JP S61139609 A JPS61139609 A JP S61139609A JP 59261746 A JP59261746 A JP 59261746A JP 26174684 A JP26174684 A JP 26174684A JP S61139609 A JPS61139609 A JP S61139609A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- air
- blast furnace
- blower
- blast
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
- F25J3/04551—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production
- F25J3/04557—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production for pig iron or steel making, e.g. blast furnace, Corex
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04593—The air gas consuming unit is also fed by an air stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04593—The air gas consuming unit is also fed by an air stream
- F25J3/046—Completely integrated air feed compression, i.e. common MAC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/04—Mixing or blending of fluids with the feed stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/50—Processes or apparatus involving steps for recycling of process streams the recycled stream being oxygen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Iron (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は各種の工業用燃焼炉や還元炉等における送風空
気中の酸素富化方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for enriching oxygen in blown air in various industrial combustion furnaces, reduction furnaces, etc.
一般に、工業用燃焼炉では燃焼効率を高めるために燃焼
用空気中の酸素を富化したり、還元炉の１つである高炉
では出銑量増加、燃料比の低減、炉頂ガス発生量の増大
を意図して、高炉送風空気の酸素を富化する操業が行わ
れている。高炉酸素富化方法としては従来、例えば特開
昭４７−１８７０７に示されるように、原料空気圧縮機
で大気を圧縮し空気分離装置に供給し、空気分離装置で
発生した約９９．６％の高純度の酸素を、高炉送風′
機入口に吹込み送風機で眉圧し、高炉への酸素富化を行
うことが提案されている。In general, in industrial combustion furnaces, oxygen is enriched in the combustion air to increase combustion efficiency, and in blast furnaces, which are a type of reduction furnace, the amount of iron tapped is increased, the fuel ratio is reduced, and the amount of gas generated at the top of the furnace is increased. Operations are being carried out to enrich the oxygen of blast furnace air. Conventionally, as shown in Japanese Patent Laid-Open No. 47-18707, a method for enriching oxygen in a blast furnace involves compressing the air using a feed air compressor and supplying it to an air separation device, which absorbs approximately 99.6% of the air generated in the air separation device. High-purity oxygen is blown into the blast furnace
It has been proposed to enrich the blast furnace with oxygen by applying pressure with a blower at the inlet of the blast furnace.
この場合、高炉への空気の酸素富化量の変化に応じ、原
料空気圧縮機の空気量の調整と、酸素が富化された分の
高炉送風機の風量調整が必要で、高炉と酸素製造装置と
富化装置とがそれぞれ独立して別体で構成されているた
め、情報遅れ等による効率悪化を招く。In this case, it is necessary to adjust the air volume of the feed air compressor and the air volume of the blast furnace blower to account for the oxygen enrichment depending on the change in the amount of oxygen enrichment of the air to the blast furnace. Since the information processing system and the enrichment device are each configured independently and separately, efficiency deteriorates due to information delays and the like.
また、空気分離装置で発生した酸素を酸素圧縮機で昇圧
した後、高炉送風機出口側に混気し高炉へ酸素富化を行
うことも提案されている。It has also been proposed to increase the pressure of oxygen generated in an air separation device using an oxygen compressor, and then supply mixed air to the outlet side of a blast furnace blower to enrich the blast furnace with oxygen.
この方法は原料空気圧縮機の空気量の調整、高炉送風機
の風量調整、および酸素圧縮機から送給する酸素吐出し
量の調整が必要であり、かつ情報遅れが不可避であり、
操作要員の必要性や連絡調整の困難を生じ、効率の悲化
を招く。また酸素圧縮機の圧送電力を余分に消費してい
る。This method requires adjusting the air volume of the raw material air compressor, the air volume of the blast furnace blower, and the amount of oxygen discharged from the oxygen compressor, and information delays are unavoidable.
This creates a need for operating personnel and difficulties in communication and coordination, resulting in a loss of efficiency. Additionally, extra power is consumed for pumping the oxygen compressor.
さらにまた、特開昭５１−８１０３では、高炉送Ｍ機の
吸込側に低純度酸素を供給する管路を設けると共に、送
風機と高炉とを結ぶ送風管路に高純度酸素を供給する管
路を設けたものが提案されている。Furthermore, in JP-A No. 51-8103, a pipe line for supplying low-purity oxygen is provided on the suction side of the blast furnace blower, and a pipe line for supplying high-purity oxygen is installed in the blast pipe line connecting the blower and the blast furnace. The following is proposed.
そしてこの方法もまた、前記２つの方法と同一の問題を
有するほか、低純度酸素と高純度酸素を富化するための
両方の配管および両酸素の富化制御を行う制御機器の諸
設備を要するから酸素富化のコストアップを招来し、実
用的でないという問題を有している。This method also has the same problems as the above two methods, and also requires piping for enriching low-purity oxygen and high-purity oxygen, as well as control equipment to control the enrichment of both oxygen. This leads to an increase in the cost of oxygen enrichment, making it impractical.
特にに配力法は何れも酸素製造に当っては大気吸込みに
よる空気分離なので、酸素分離収率を向１−することが
できないこと、および高炉送風量の変化に応じた酸素製
造量の増減を迅速にできない等の問題がある。In particular, all distribution methods involve air separation by suctioning atmospheric air during oxygen production, so it is impossible to improve the oxygen separation yield, and it is difficult to increase or decrease the amount of oxygen produced according to changes in the blast furnace air flow rate. There are problems such as not being able to do it quickly.
このように、従来の高炉酸素富化方法は、高炉への送風
量の変動に応じ酸素プラント（原料空気圧縮機゛）およ
び高炉送風機の調整を同時かつ適切に行う、ことができ
ないばかりか、酸素富化のための設備費や動力費が高価
で、酸素富化および製造原単位の高騰をもたらしている
。As described above, the conventional blast furnace oxygen enrichment method not only cannot simultaneously and appropriately adjust the oxygen plant (raw air compressor) and blast furnace blower according to fluctuations in the amount of air blown to the blast furnace, but also Equipment costs and power costs for enrichment are expensive, leading to a rise in oxygen enrichment and production unit costs.
そこで本発明では、高炉操業の変化に対応して適切に操
業でき、かつ安価な酸素富化が行えるようにしたもので
ある。Therefore, in the present invention, the blast furnace can be operated appropriately in response to changes in blast furnace operation, and oxygen enrichment can be performed at low cost.
本発明は、
（１） 高炉送風用として富化する酸素は必ずしも高
純度酸素である必要はないこと、
■ 原料空気圧縮のために圧力を通常は例えば５．２
ｋ ｇ／ ｃｍ’Ｇまで高めているが、高炉送風機でも
３．７〜４．０ ｋ ｇ ／ ｃ ｍ” Ｇの圧力まで
高めて高炉へ送風していること、
■ 空気中で約２１％の酸素を富化装置で約２３％まで
高めて送風しているから、このような大気よりも２％高
い酸素の送風用空気を圧縮してやれば、さらに空気中か
ら酸素を分離するための空気分離装置における圧縮動力
費用が少なくて済むということ。The present invention has the following features: (1) The oxygen enriched for blast furnace ventilation does not necessarily have to be high-purity oxygen; (2) The pressure for compressing the raw material air is usually, for example, 5.2
kg/cm'G, but the blast furnace blower is also blowing air into the blast furnace at a pressure of 3.7 to 4.0 kg/cm'G. Since the oxygen enrichment equipment is used to increase the oxygen content to approximately 23% before blowing air, if the air used for the ventilation is compressed and has an oxygen content of 2% higher than that of the atmosphere, an air separation equipment will be used to further separate oxygen from the air. This means that the compression power cost is low.
を基本的知見としてなされたものである。This was done as a basic finding.
未発−では、酸素分離装置からの酸素の純度を８０％程
度の酸素含有のものとし、酸素分離収率の向−ヒと、高
炉送風量の変化に応じた酸素製造量の増減調整を迅速に
行うべく、高炉送風機と高炉とを連絡する送風量に送風
空気の一部を取出して酸素を製造し、これを再び送風管
路に導入するようにした。In the case of unexploded oxygen, the purity of the oxygen from the oxygen separator is made to contain approximately 80% oxygen, which improves the oxygen separation yield and quickly adjusts the amount of oxygen produced according to changes in blast furnace air flow. In order to do this, a part of the blown air was taken out to the amount of air flowing between the blast furnace blower and the blast furnace to produce oxygen, and this was reintroduced into the blast duct.
本発明の酸素の高炉富化プロセスは、第１図に示すよう
に、既存の高炉送風機用空気取入口ｌから大気を取入れ
、吸′込みフィルター２を通して、高炉送風機３にて昇
圧し、高炉へ熱−を送風する。この途中から酸素製造装
置（空気分離装置）６への取り出し管および調節弁Ｖ−
３を介して抜き出し水洗冷却塔５で取入空気を清浄化し
、かつ約１５０〜２００℃程度に断熱圧縮された空気を
約２５℃程度に冷却洗浄した後番乙酸素製造装置（空気
分離装置）６へ供給する。この場合、高炉送風機３を原
料空気圧縮機としてそのまま活用する。従来の空気分離
装置では酸素濃度９９．６％程度とするために必要な精
溜段数が多く空気分離装置の入口圧力を高く保つ必要が
あったが、酸素濃度８０％程度ではこれを下げることが
でき、一定量の空気を原料空気圧縮機の吐出圧力から高
炉送風機の吐出圧力に下げることによって原料空気圧縮
機を省略できると共に、消費動力を大幅に下げることが
できることになる。As shown in Fig. 1, the oxygen enrichment process in a blast furnace of the present invention takes in air from an existing air intake port 1 for a blast furnace blower, passes through an intake filter 2, increases the pressure in a blast furnace blower 3, and supplies the air to the blast furnace. Blow out heat. A take-out pipe and control valve V- from this midway to the oxygen production device (air separation device) 6
3, the intake air is purified in the water washing cooling tower 5, and the air that has been adiabatically compressed to about 150 to 200°C is cooled and washed to about 25°C. Supply to 6. In this case, the blast furnace blower 3 is used as it is as a raw material air compressor. Conventional air separation equipment requires a large number of rectification stages to achieve an oxygen concentration of around 99.6%, making it necessary to maintain a high inlet pressure of the air separation equipment, but this cannot be lowered when the oxygen concentration is around 80%. By lowering a certain amount of air from the discharge pressure of the raw material air compressor to the discharge pressure of the blast furnace blower, the raw material air compressor can be omitted and the power consumption can be significantly reduced.
すなわち、高炉へ酸素を富化するにあたっては、従来の
ような９９．６％程度の高純度のものは必要がなく、８
０％程度の低純度酸素でも高炉操業には充分であるから
、酸素濃度を９９．６％から８０％にすることによって
、第３図のような精溜塔における精溜段数Ｘ、Ｙを減ら
すことができる。In other words, when enriching oxygen to a blast furnace, there is no need for oxygen with a high purity of around 99.6% as in the past;
Since even low-purity oxygen of about 0% is sufficient for blast furnace operation, by increasing the oxygen concentration from 99.6% to 80%, the number of rectification stages X and Y in the rectification column as shown in Figure 3 can be reduced. be able to.
従ってその固有抵抗派により、原料空気の圧力を下げる
ことが可能となる。このため、従来は、原料空気を５．
２ｋｇ／ｃｒｎ’Ｇ程度に圧縮していたものを、高炉送
風機の４．０ ｋ ｇ ／ ｃ ｔｎ’ Ｇ程度の圧力
を利用することが可能である。Therefore, its specific resistance makes it possible to lower the pressure of the raw air. For this reason, conventionally, the raw material air was
It is possible to use the pressure of about 4.0 kg/ctn'G of a blast furnace blower for what was previously compressed to about 2 kg/crn'G.
故に、この圧力低下に比例して、消費動力を減らすこと
ができる。Therefore, power consumption can be reduced in proportion to this pressure drop.
さらに酸素純度が９９．６％を８０％に下げられること
により、第４図に示す如く、酸素ＩＮｒｎ”当りの所要
空気量が下げられるので、その処理風量減少に比例して
消費動力が減少する。Furthermore, by lowering the oxygen purity from 99.6% to 80%, as shown in Figure 4, the amount of air required per oxygen INrn is lowered, so the power consumption is reduced in proportion to the reduction in the processing air volume. .
また、原料空気中に２％の酸素が富化されているものを
分離器に供給することで、第５図に示す如く、空気量が
減ると共に、それに伴って消費動力（電力原単位ｋＷ
ｈ ／ Ｎｍ’０２ ）を減らすことができる。In addition, by supplying feed air enriched with 2% oxygen to the separator, as shown in Figure 5, the amount of air is reduced and power consumption (power consumption unit kW) is reduced.
h/Nm'02).
これらによって従来消費していた動力原単位は０、６４
７ ｋＷ ｈ ／ Ｎｍ”０２ テあったものが、上記
効果により、
０、６４７− （０，２７７＋ ０．０４ ）＝ ０．
３３ ｋＷ ｈ ／ Ｎｍ’０２まで低減できることに
なる。Due to these, the power consumption unit that was conventionally consumed is 0.64
What used to be 7 kW h / Nm"02, due to the above effect, becomes 0,647-(0,277+0.04)=0.
This means that it can be reduced to 33 kW h / Nm'02.
酸素製造装置（空気分離装置）６に供給された原料空気
は、経済的に最も大なる効果をもたらすであろう所望の
純度の酸素に分離される。The raw air supplied to the oxygen production device (air separation device) 6 is separated into oxygen of a desired purity that will provide the greatest economic effect.
発生された酸素は、設定された純度に応じて流量調整弁
Ｖ−４を通して、高炉送風機３の入口に送られ、設定さ
れた０２濃度になるようミキシング装置７で十分混合さ
れ、高炉送風機３で昇圧後、高炉４に送風される。The generated oxygen is sent to the inlet of the blast furnace blower 3 through the flow rate adjustment valve V-4 according to the set purity, is sufficiently mixed in the mixing device 7 to reach the set 02 concentration, and is then sent to the inlet of the blast furnace blower 3. After increasing the pressure, air is blown into the blast furnace 4.
また、高炉４の送風量の変化に応じ、高炉送風ｆ＆３の
大口弁Ｖ−ｔで風量調整を行うと同時に酸素製造装置（
空気分離装置）６への供給原料空気量の調整を行い、酸
素製造装置（空気分離装置）６の酸素発生量の増減をよ
り効率的に行えるようにした。In addition, depending on the change in the air flow rate of the blast furnace 4, the air flow rate is adjusted using the large mouth valve V-t of the blast furnace air blower f&3, and at the same time, the oxygen production device (
By adjusting the amount of feed air to the air separation device (air separation device) 6, the amount of oxygen generated by the oxygen production device (air separation device) 6 can be increased or decreased more efficiently.
酸素製造装置の発生酸素濃度を８０％程度とすることに
より酸素製造装置の精溜塔の段数を大幅に減少でき、従
って、酸素製造装置への送入圧力を減少できるので、高
炉送風機の出口空気を直ちに酸素製造装置に導入するこ
とができる。従って、圧縮動力の減少、吸入空気の酸素
濃度増による酸素製造装置の負荷減少等により、酸素富
化に要する動力を大幅に減少することができる。By setting the concentration of oxygen generated in the oxygen production equipment to about 80%, the number of stages in the rectification column of the oxygen production equipment can be significantly reduced, and therefore the pressure fed to the oxygen production equipment can be reduced, so that the outlet air of the blast furnace blower can be reduced. can be immediately introduced into the oxygen production equipment. Therefore, the power required for oxygen enrichment can be significantly reduced by reducing the compression power and reducing the load on the oxygen production device due to an increase in the oxygen concentration of the intake air.
この酸素の高炉富化プロセスは、高炉の生産状況に応じ
て高炉送風量の変花調整を高炉送風機人口弁Ｖ−１で行
った時に、酸素製造装置（空気分離装置）６に供給され
る原料空気量が比例調整でき、かつ高炉４への酸素富化
濃度を自動的に調整できるよう、酸素製造装置（空気分
離装置）６の酸素発生量の調整を同時に、効率的に行う
ことができる。制御方法は、
ｌ） 高炉４への送風量ＦＩＣ−１より、酸素製造装置
（空気分離装置）６へ供給する原料空気量ＦＩｃ−２を
ｖ−３で比率制御させる。In this oxygen enrichment process, the raw material supplied to the oxygen production device (air separation device) 6 is produced when the blast furnace air flow rate is adjusted in accordance with the production status of the blast furnace using the blast furnace blower artificial valve V-1. The amount of oxygen generated by the oxygen production device (air separation device) 6 can be adjusted simultaneously and efficiently so that the air amount can be adjusted proportionally and the oxygen enrichment concentration to the blast furnace 4 can be automatically adjusted. The control method is as follows: l) The ratio of the feed air amount FIc-2 supplied to the oxygen production device (air separation device) 6 is controlled by v-3 from the air blow amount FIC-1 to the blast furnace 4.
２） 高炉酸素富化の送風空気中の酸素濃度計Ａおよび
送風空気ｊｉＦ Ｉ Ｃ−１で酸素製造装置（空気分離
装置）６の酸素発生量（純度一定）ＦＩＣ−３を制御さ
せる。2) The oxygen generation amount (constant purity) FIC-3 of the oxygen production device (air separation device) 6 is controlled by the oxygen concentration meter A in the blast furnace oxygen-enriched blast air and the blast air jiF I C-1.
この方法は、既存の高炉送風機に酸素製造装置（空気分
離装Ｈ）６を設置することによって、最少の設備投資で
効率的な酸素製造装置を特徴とした高炉酸素富化プロセ
スである。This method is a blast furnace oxygen enrichment process that features an efficient oxygen production device with minimal capital investment by installing an oxygen production device (air separation device H) 6 in an existing blast furnace blower.
実施例として、空気中２１％０２を２３％０２にアップ
した高炉送風空気４０２．ＯＯＯＮｍ”／Ｈのうちの操
業に支障のない２３，２０ＯＮｍ’／Ｈを酸素製造装置
（空気分離装置）６で８０％濃度、６，２５ＯＮｍ’／
Ｈの耐電とし、これをミキシング装置７を介して高炉送
風空気に富化することで、従来の酸素製造装置で製造し
た酸素を富化する際の消費動力が０．６４７ ｋ ｗ、
Ｈ／ Ｎｍ”０２ テあったのを、約半分０’）０．３
３ ｋ ｗＨ／ Ｎｒｎ’０２まで低下させることがで
きた。As an example, blast furnace blast air 402. Of the OOONm"/H, 23,20ONm'/H, which does not affect operation, is used in the oxygen production equipment (air separation equipment) 6 at a concentration of 80%, 6,25ONm'/H.
By enriching blast furnace blast air with this through the mixing device 7, the power consumption when enriching oxygen produced with a conventional oxygen production device is 0.647 kW,
H/Nm”02 About half of the time was 0’) 0.3
It was possible to reduce it to 3 kwH/Nrn'02.
なお、実施例では、酸素富化を送風機の吸込側で行った
例を示したが、送風機吐出側の酸素富化用管路に富化し
てもよい。In addition, in the embodiment, an example was shown in which oxygen enrichment was performed on the suction side of the blower, but it may be enriched in the oxygen enrichment conduit on the blower discharge side.
さらにまた、実施例では高炉の例について説明したが、
各種工業炉の燃焼用空気中に酸素を富化する場合などで
も適用できる。Furthermore, in the examples, an example of a blast furnace was explained, but
It can also be applied when enriching oxygen in the combustion air of various industrial furnaces.
本発明によれば、高炉送風系に酸素製造用の酸素製造装
置（空気分離装置）６を有しているので、高炉の操業状
態に即応した酸素富化を迅速かつ適切に行うことができ
る。；
さらに、高炉送風機の圧縮力を利用すると共に、酸素の
富化された空気を圧縮して酸素を製造した後、この酸素
を送風管へ戻してこの工程を循環ｙせるから、酸素富化
のための動力費および原単位を大幅に低減させることが
可能となった。この効果は、高炉送風管路に酸素製造装
置（空気分離装置）６を設置して富化する諸費用を遥か
に上回る大きな効果をもたらす。According to the present invention, since the blast furnace ventilation system includes the oxygen production device (air separation device) 6 for oxygen production, oxygen enrichment can be performed quickly and appropriately in response to the operational status of the blast furnace. Furthermore, the compressive force of the blast furnace blower is used, and after compressing the oxygen-enriched air to produce oxygen, the oxygen is returned to the blast pipe and circulated through this process, making it possible to achieve oxygen enrichment. It has become possible to significantly reduce power costs and unit consumption. This effect brings about a great effect that far exceeds the various costs incurred by installing the oxygen production device (air separation device) 6 in the blast furnace blast pipe.
第１図は本発明の実施例の酸素の高炉富化系統図、第２
図は従来の高炉富化系統図、第３図は酸素分離装置の精
溜塔の模式断面図、第４図は酸素純度と所要空気酸の関
係を示すグラフ、第５図は原料空気中の酸素濃度と原料
空気量との関係を示すグラフである。
■・・・空気取入口 ２・・・吸込フィルタ３・
・・高炉送風機 ４・・・高炉５・・・水洗冷却
塔
６・・・酸素製造装置（空気分離装置） ′７・・・ミ
キシング装置
Ｖ−ｔ・・・高炉送風機人口弁
Ｖ−２・・・高炉送風機出目弁
Ｖ−３・・・原料空気調節弁
Ｖ−４・・・酸素流量調節弁
ＦＩＣ−１・・・高炉送風流量計
ＦＩ Ｃ−２・・・原料空気風量計
ＦＴＣ−３・・・酸素発生量流量計
Ａ・・・酸素濃度計Figure 1 is an oxygen enrichment system diagram in a blast furnace according to an embodiment of the present invention;
The figure is a conventional blast furnace enrichment system diagram, Figure 3 is a schematic cross-sectional view of a rectification column in an oxygen separation device, Figure 4 is a graph showing the relationship between oxygen purity and required air acid, and Figure 5 is a graph showing the relationship between oxygen purity and required air acid. It is a graph showing the relationship between oxygen concentration and raw material air amount. ■... Air intake port 2... Suction filter 3.
...Blast furnace blower 4...Blast furnace 5...Water cooling tower 6...Oxygen production device (air separation device) '7...Mixing device V-t...Blast furnace blower population valve V-2...・Blast furnace blower outlet valve V-3...Feed air control valve V-4...Oxygen flow rate control valve FIC-1...Blast furnace air flow meter FI C-2...Feed air flow meter FTC-3 ...Oxygen generation flow meter A...Oxygen concentration meter
Claims (1)
空気の一部を取り出し、該空気を酸素製造装置に導いて
酸素を製造し、該酸素を前記送風機の吸込側もしくは吐
出側に導入することを特徴とする工業炉の酸素富化方 法。[Scope of Claims] 1. A part of the air for blowing is taken out from a blow pipe that connects the blower of an industrial furnace and the furnace, the air is guided to an oxygen production device to produce oxygen, and the oxygen is sucked into the blower. A method for enriching oxygen in an industrial furnace, characterized by introducing oxygen into the side or the discharge side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59261746A JPS61139609A (en) | 1984-12-13 | 1984-12-13 | Oxygen enriching method of industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59261746A JPS61139609A (en) | 1984-12-13 | 1984-12-13 | Oxygen enriching method of industrial furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61139609A true JPS61139609A (en) | 1986-06-26 |
Family
ID=17366131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59261746A Pending JPS61139609A (en) | 1984-12-13 | 1984-12-13 | Oxygen enriching method of industrial furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61139609A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0368288A2 (en) * | 1988-11-09 | 1990-05-16 | Union Carbide Corporation | Method for carrying out an oxidation reaction |
| FR2677667A1 (en) * | 1991-06-12 | 1992-12-18 | Grenier Maurice | METHOD FOR SUPPLYING AN OXYGEN-ENRICHED AIR STOVE, AND CORRESPONDING IRON ORE REDUCTION INSTALLATION. |
| FR2753638A1 (en) * | 1996-09-25 | 1998-03-27 | Air Liquide | PROCESS FOR SUPPLYING A GAS CONSUMER UNIT |
| USRE37014E1 (en) | 1993-11-12 | 2001-01-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges | Combined installation of a metal production unit and a unit for the separation of air gas |
| 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 |
| JP2007512491A (en) * | 2003-11-10 | 2007-05-17 | レール・リキード−ソシエテ・アノニム・ア・ディレクトワール・エ・コンセイユ・ドゥ・スールベイランス・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method and apparatus for concentrating one component of a gas stream |
| JP2008050636A (en) * | 2006-08-23 | 2008-03-06 | Jfe Steel Kk | Oxygen-enriched blasting method into blast furnace |
| JP2008309446A (en) * | 2007-06-18 | 2008-12-25 | Jfe Steel Kk | Manufacturing and supply method for nitrogen and/or oxygen and compressed air |
| JP2009528448A (en) * | 2006-03-03 | 2009-08-06 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method for integrating a blast furnace and an air separation device |
| JP2016191110A (en) * | 2015-03-31 | 2016-11-10 | Ｊｆｅスチール株式会社 | Blast furnace ventilation method and blast furnace ventilation facility |
-
1984
- 1984-12-13 JP JP59261746A patent/JPS61139609A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0368288A2 (en) * | 1988-11-09 | 1990-05-16 | Union Carbide Corporation | Method for carrying out an oxidation reaction |
| FR2677667A1 (en) * | 1991-06-12 | 1992-12-18 | Grenier Maurice | METHOD FOR SUPPLYING AN OXYGEN-ENRICHED AIR STOVE, AND CORRESPONDING IRON ORE REDUCTION INSTALLATION. |
| US5244489A (en) * | 1991-06-12 | 1993-09-14 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for supplying a blast furnace with air enriched in oxygen, and corresponding installation for the reduction of iron ore |
| BE1006334A3 (en) * | 1991-06-12 | 1994-07-26 | Air Liquide | Power process of blast furnace air increased oxygen and installation thereof iron ore reduction. |
| DE4219160C2 (en) * | 1991-06-12 | 2002-07-18 | Air Liquide | Process and plant for supplying a blast furnace with oxygen-rich air |
| USRE37014E1 (en) | 1993-11-12 | 2001-01-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges | Combined installation of a metal production unit and a unit for the separation of air gas |
| CN1068050C (en) * | 1996-09-25 | 2001-07-04 | 液体空气乔治洛德方法利用和研究有限公司 | Process for feeding gas-consuming unit |
| US6062043A (en) * | 1996-09-25 | 2000-05-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for feeding a gas-consuming unit |
| EP0833120A1 (en) * | 1996-09-25 | 1998-04-01 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for supplying gas to a consumption unit |
| FR2753638A1 (en) * | 1996-09-25 | 1998-03-27 | Air Liquide | PROCESS FOR SUPPLYING A GAS CONSUMER UNIT |
| JP2007512491A (en) * | 2003-11-10 | 2007-05-17 | レール・リキード−ソシエテ・アノニム・ア・ディレクトワール・エ・コンセイユ・ドゥ・スールベイランス・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method and apparatus for concentrating one component of a gas stream |
| 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 |
| JP2009528448A (en) * | 2006-03-03 | 2009-08-06 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method for integrating a blast furnace and an air separation device |
| JP2008050636A (en) * | 2006-08-23 | 2008-03-06 | Jfe Steel Kk | Oxygen-enriched blasting method into blast furnace |
| JP2008309446A (en) * | 2007-06-18 | 2008-12-25 | Jfe Steel Kk | Manufacturing and supply method for nitrogen and/or oxygen and compressed air |
| JP2016191110A (en) * | 2015-03-31 | 2016-11-10 | Ｊｆｅスチール株式会社 | Blast furnace ventilation method and blast furnace ventilation facility |
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