JPS5956504A - Blast tuyere of blast furnace - Google Patents
Blast tuyere of blast furnaceInfo
- Publication number
- JPS5956504A JPS5956504A JP16815782A JP16815782A JPS5956504A JP S5956504 A JPS5956504 A JP S5956504A JP 16815782 A JP16815782 A JP 16815782A JP 16815782 A JP16815782 A JP 16815782A JP S5956504 A JPS5956504 A JP S5956504A
- Authority
- JP
- Japan
- Prior art keywords
- tuyere
- blast
- diameter
- blast furnace
- blade
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
Abstract
Description
【発明の詳細な説明】
本発明は溶鉱炉送風羽「１に関し、さらに詳しくは、羽
１１？ηり風エネルギーを有効に利用することがで鯵る
溶鉱炉送風羽１−１に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blast furnace blower blade 1, and more particularly to a blast furnace blower blade 1-1 that can effectively utilize wind energy from the blades 11.
通常の操某状態でない）成産下の溶鉱炉においては、ホ
ノシュカ゛ス惜は低ト″しており、ガス流の周辺流化が
牛しる恐れかあるので、できるだけ送風を溶鉱カミ内奥
法く入れるように羽１：、１ ｆｉｉｉの条１′１を制
り１１する覆装がある。即ち、羽１１前の風速を土性さ
せレースウェイを深くするのである。In a blast furnace under production (not under normal operating conditions), the gas flow is extremely low, and there is a risk that the gas flow may flow around the periphery. There is a cover that restricts the rows 1'1 of the blades 1:, 1 fiii to accommodate the windings.In other words, the wind speed in front of the blades 11 is adjusted to make the raceway deeper.
しかしながら、羽１１前風速を極めて速く、例えば、：
（ｆｌ （１＋ｏ／ ｓｐｃ以−１−になると送風圧力
が１． ’ｔＥｒるため羽ｌｌ前風速は３（１（，１＋
ｎ／ ｓＱｃに抑えているのが現状であり、通常は２５
ｆｌ−２７ｆｌ ｍ／ ｓｐｃで操某している。However, if the wind speed in front of the wing 11 is extremely high, for example:
(fl (1+o/ When spc becomes -1-, the blowing pressure becomes 1.'tEr, so the wind speed in front of the blade is 3(1(,1+
Currently, it is kept to n/sQc, and normally 25
I am operating a fl-27fl m/spc.
そして、羽１＋ｒｉｉｊ風速が３ Ｆ’） ｆｌ Ｉｎ
／ ｑｐｃて送風圧力が」−列するのは、送風圧力４
、（Ｉ Ｋ Ｂ／ ＣＩ＋１２（地利１干。And the feather 1 + riij wind speed is 3 F') fl In
/ qpc and the blowing pressure is ”-The column is blowing pressure 4
, (I K B / CI + 12 (land profit 1 d.
で５ 、 ＯＫ Ｂ／ ｃａｎ２）、送風温度＋２（Ｈ
１℃の条１′１において、風速は音速≠２ ！］ ！ｌ
Ｉｌｌ／ ｓＱｃとなり、即九、３ｔｌ Ｏｍ／ ｓ
Ｑｃノ羽しｌ １ｉｉｊ風速では８１算、ｌ−、Ｍ ＞
Ｉとなるため圧縮性流体の領域になると考えられる。5, OK B/can2), air temperature +2 (H
In line 1'1 at 1°C, the wind speed is the speed of sound ≠ 2! ]! l
Ill/sQc, immediately 9, 3tl Om/s
Qc no feather 1iij wind speed is 81 calculations, l-, M >
I, so it is considered to be a compressible fluid region.
しかして、溶鉱炉別１−」の形状は、収縮筒型と拡散筒
型とがあり、上記した羽［１前風速に−）いて第１図に
よ１）説明すると亜音速と超音速では全り）弼の挙動を
示すものであり、即ち、第１図（ａ）ｌこおいては風速
は１ｆｌ−音速（Ｍ＜］）の場合の収縮筒型の羽目の風
（矢印方向に流れる。以下、第１ Ｕｊｌ：１（ｂ）（
ｃ）（ｄ）とも同しである。）は、入１−１の圧力より
出１１の圧力か減少しているが、風速は−１−？’ｌし
ておｌ）、第１１３１（１＋’＋を二おい′こｌ土風ｊ
虫１土’Ｉｌｊ ｕ’ ＋東（Ｍ＜１）で１法故抽をの
羽（１のシ久は、入１１よ’ｌ ｌ’＋ｌ １）ｌｌ力
り弓、ｖｌシ、風速は減少し、また、第１［ヌ１（ｃ）
は風速は超Ｔ′１ｉ屯（Ｍ’＞ Ｉ ）ノ収稲ｔ＋’６
’Ｌ’！ （７’） 羽１−ｆ ノ風ハ、人１１ノｌ
１ＩＪＪ Ｊ、 １）ｉ１’、ｌｌの圧力が増加してい
るが、風速は減少しており、さらに、第１図（（（）は
風速が超ｉ″４ｊ虫（Ｍ＞Ｉ）の拡散筒ＩＩ、ＩＩの羽
ＩＩの風は、大トー１の目方より出１−．１の）！力は
）成少し、風速は増加しているものであ１）、全り）強
の挙動ｆ（ンｉＮシていることは明らかである。There are two types of blast furnace shapes: a contraction tube type and a diffusion tube type. Figure 1(a) shows the behavior of the wind in the contraction cylinder type slats (flowing in the direction of the arrow) when the wind speed is 1 fl - the speed of sound (M<]). Hereinafter, 1st Ujl:1(b)(
c) Same as (d). ), the pressure at outlet 11 is lower than the pressure at input 1-1, but the wind speed is -1-? 1131 (1+'+ 2')
Insect 1 soil 'Ilj u' + east (M < 1), 1 law draw feather (1's shiku is 11 in 'l l' + l 1) ll power bow, vl shi, wind speed decreases Also, the first [nu1(c)
The wind speed is over T'1i ton (M'> I) and the rice harvest is t+'6
'L'! (7') Wing 1-f No Kaze Ha, Person 11 Nol
1IJJ J, 1) The pressure of i1', ll is increasing, but the wind speed is decreasing. The wind of II, II's wing II is from the direction of the large toe 1, and the force of 1)! is increasing, and the wind speed is increasing. (It is clear that the
そし′６羽１１ｎｉｉ風速が超１″１速になると、収縮
筒型の羽１１においては送風の連ΦＪ＋エネルキーか１
１力に変換してしまっため、通気性を重要視［る溶鉱炉
操業においては極めてイ・都合な状態となるのである。Then, when the wind speed of 6 blades 11nii becomes super 1″1 speed, in the contraction cylinder type blade 11, the air flow chain ΦJ + energy key 1
This results in an extremely inconvenient situation in blast furnace operations where ventilation is important.
本発明者は、：成産十の溶鉱炉における羽１１速風の状
態、又は、収縮節塑羽１１、拡散筒へり羽目の送風の状
態等に鑑み、鋭意ｊＪｆ究の結果、収縮節型別１１と拡
散筒型別１１とを紹介せた、所謂、ラバールノズル型の
溶鉱炉別１−１とすることによって、溶鉱炉の良法くま
で風を送ることができ、極めて速い速度の風ｉ′ｌ＋
１こよってしレースウェイが破壊されないことを見出し
ｔこのである。The inventor of the present invention: As a result of intensive research, taking into account the conditions of the blade 11 speed wind in the blast furnace of 10 years of production, or the condition of the air blowing of the shrinkage knot plastic blade 11 and the edge of the diffusion cylinder, the contraction knot type 11 By introducing the so-called Laval nozzle type blast furnace 1-1, which introduces the diffusion cylinder type 11, it is possible to send air to the best part of the blast furnace, and it is possible to generate extremely high speed wind i'l+.
1 I found that the raceway was not destroyed by this.
本発明は１・記したように溶鉱炉の羽１１における風速
の問題点や本発明者の知見にＪ、ってなされた溶鉱ＩＪ
ｉの送風羽１’ｌを提供するものである。The present invention is based on the problem of wind speed in the blades 11 of the blast furnace and the knowledge of the inventor as described in 1.
This provides a blower blade 1'l of i.
本発明に係る溶鉱炉送風羽Ｉ−１の１、ｌｒ徴とすると
こロバ、ラバールノスル（１すの羽１１にｔ；いて、羽
Ｎｔｙ＞人１１、羽１１の中央部及び羽］１の出［１の
径が、Ｄ 、 ＞ ＩＩ） 、 ＜ ｌ）。1, lr of the blast furnace blowing blade I-1 according to the present invention is a donkey, a rubber nostle (t; in the blade 11 of the 1st, blade Nty>person 11, the central part of the blade 11 and the blade). The diameter of 1 is D, > II), < l).
の式を満足（るＩｔｅ状にあり、１〕、は羽（１の人１
１の径、Ｉ）、は羽ＩＩの中央部（喉部）の径、１）３
は羽１１の出［１の（予である。satisfies the formula (it is in the form of 1), is feather (1 person 1
The diameter of 1, I) is the diameter of the central part (throat) of wing II, 1) 3
is the (pre) of feather 11.
このラバールノズル型別］−１において、羽１］の人１
１の径か出「１の径より火きいことが望ましく、即ち、
１）１）［）３であるか、しが腰羽１−］の出１１の径
が羽１１の人１１の径よ１）ｋ、きくでもよいのであ１
）、ｐ）１＞Ｄｌとしてもよいのである６
本発明に係る溶鉱炉送風羽１−１について以下図面によ
り具体的１こ説明する。In this Laval nozzle type]-1, feather 1] person 1
The diameter of 1 is preferably greater than the diameter of 1, that is,
1) 1) [) 3, or the diameter of the protrusion 11 of the waist feather 1-] is the diameter of the person 11 of the feather 111) k, so it may be 1
), p) 1>Dl 6 The blast furnace blower blade 1-1 according to the present invention will be specifically explained below with reference to the drawings.
第２図は本発明に係る溶鉱炉送風羽「１の概略断面図で
あり、ｌは羽１１．２は胴木水冷部、３は先端水冷部で
、人１−１側径１）い中央部（喉部）径１）７、出１１
径り３を示し、出１−１側は溶鉱炉内に向いている。ま
た、水冷は羽１１全体を一体的にしてもよく、また、ス
パイラル水冷の何れでもよし・。FIG. 2 is a schematic cross-sectional view of the blast furnace blowing vane ``1'' according to the present invention, where l is the blade 11.2 is the trunk water cooling part, 3 is the tip water cooling part, and the center part with a diameter 1) on the side of the person 1-1. (Throat) Diameter 1) 7, Output 11
Diameter 3 is shown, and the exit 1-1 side faces into the blast furnace. Further, water cooling may be performed by integrally forming the entire blade 11, or by spiral water cooling.
二の第２（メ１の゛溶鉱炉送風羽１１１１こＩいＣは（
ラバール７スル型）、羽１’、ｌ １の人１１側で５＋
１；音速の風は中央部（喉部）ではマツハ数Ｎ４＝１と
なり、羽［１１の出１１側では超音速の流れとなるもの
で、この出１」側の風速を超音速とするには羽１ｉ１の
入［−１と出１１の風のＪｌ：力によって決定される。The second part (the first part is the blast furnace blower blade 1111) is (
Laval 7sul type), wings 1', l 1 person 11 side 5+
1; The wind at the speed of sound becomes Matsuha number N4 = 1 in the center (throat), and the flow becomes supersonic on the exit 11 side of the blade [11]. is determined by the force of the wind Jl: of the input [-1 and output 11 of the feather 1i1.
そして、このラバール７スル型の溶鉱炉送風羽１］よ１
）の超音速流は乱）Ｘコ圧縮性ｌ↓１山噴流となり、ラ
バールノズル型溶鉱炉送風羽１−１の出［１の速度が保
持されて溶鉱ＩＪｊの奥深くまでそのエネルギーが伝え
られるものであり、その送度コアはマツハ数Ｎ１が火き
い程良いのである。And this Laval 7-sle type blast furnace blower blade 1]
) The supersonic flow becomes turbulent) Yes, the higher the Matsuha number N1 is, the better the feed core is.
第３図（、）、第３図（ＩＩ）に、ラバールノズル型溶
鉱炉送風羽１−’ｌの送風速度と送風圧力とについて、
羽１）の入日、中火部及びｌ’１ｌ−１の夫々における
マツハ数分布と圧力分布を示すが、これからもわかるよ
うに、ラバール／スル型溶鉱炉送風羽１−１の優れてい
ることは明らかである。FIG. 3(,) and FIG. 3(II) show the blowing speed and blowing pressure of the Laval nozzle type blast furnace blowing blade 1-'l.
The Matsuha number distribution and pressure distribution at sunrise, medium heat section, and l'1l-1 are shown for blade 1), and as can be seen from this, the Laval/Sull type blast furnace blower blade 1-1 is superior. is clear.
１υ、に説明したように、本発明に係る溶鉱炉送風羽［
］は−に記の構成を有しているものであるから、次（こ
示すをＪ１東を奏するものである。As explained in 1υ, the blast furnace blower blades according to the present invention [
] has the configuration shown in -, so the following (shown here) is played for J1 East.
（１）プントマンと称される１；活ヤｌな炉芯が狭小化
し、稼働内客積の増大による送風鼠を増ＪＪＩけること
ができ出銑量が増加する。(1) Referred to as Puntoman 1: The active furnace core is narrowed, and the amount of air blowing can be increased due to an increase in the customer volume within the operation, which increases the amount of iron output.
（２）溶鉱炉−Ｆ部の反応性が増大し、直接還元率のＪ
−ｖｌによる燃料比を低減でとる。(2) The reactivity of the blast furnace F section increases and the direct reduction rate J
- Reduce the fuel ratio by vl.
（３）溶鉱炉の中心操業化ができ、炉体熱損失減少しこ
よる燃料比低減と炉床銑滓流の中心流化により炉体保護
及び炉底保護ができる。(3) The blast furnace can be operated centrally, and the furnace body and hearth bottom can be protected by reducing the heat loss of the furnace body, reducing the fuel ratio, and converting the hearth slag flow to a central flow.
（４）羽１１前運動エネルギーの増大及びレースウェイ
の深化により羽に１破損回数がｉ減少する。(4) Due to the increase in the kinetic energy in front of the blade 11 and the deepening of the raceway, the number of times the blade is damaged by one decreases by i.
（５）劣性コークス使用丁ではレースウェイが浅くなる
といわれているが、レースウェイＭ１持かり能となる。(5) It is said that the raceway becomes shallower when recessive coke is used, but the raceway becomes M1.
第１図は収縮筒望羽１１と拡散筒型別１−１の送風状況
の説明図、第２図は本発明に係る溶鉱炉送風羽［１の１
例を示す概略断面図、第：（図は本発明に係る溶鉱（Ｊ
ｉ送ｊ戦羽１１の送風速度と１力との分布図である。
１・・羽１−１．２・・１１１１体水冷部、３・・先端
水冷部。
手続補Ｉ１．誉り （自発）
特Ｈ’ｌ庁艮官若杉和夫殿
１、事件の表示
昭和５°７年１、ｙ訂願第１６８１ ”、１７号２、発
明の名称
溶鉱炉送風羽１−１
５号、補正をする者
事ｆ’ｌとの関係 特許出願人
１１：所 神戸山中大区ｊ協浜町１■°目３番１８号名
称 （］、ＭＪ） 株式会社 神戸製鋼所代表者
高 ｍ Ｐ 吉
４、代理人
住所 東京都；［、東区南砂２丁目２番１５号藤和東陽
町コープ９０１号
〒１：（６電話（６４６） ６１ ！Ｊ ４５、補正命
令のＩＩ付 （自発）
（’ｒ 、 ｔ＋ｌｉ ＋ＩＥのλ・Ｊ未（１）明細書
の発明の訂細なＡ（（、明のＩＩＹＩ（２）第１図（ａ
）
°７．補正の内容
別紙の通り
（１）明細ｌ＋１１第：３ ｙｊ第１５行の［羽Ｉ−１
速風１とあるのを１羽１１風速１と捕市する。
ｔｌ 図
（α）
Ｍ＜１FIG. 1 is an explanatory diagram of the air blowing situation of the contraction tube fan 11 and the diffusion tube type 1-1, and FIG.
Schematic sectional view showing an example, No.
It is a distribution diagram of the air blowing speed and 1 power of i blowing j Senba 11. 1. Wing 1-1.2. 1111 body water cooling section, 3. Tip water cooling section. Supplementary Procedure I1. Honor (spontaneous) Mr. Kazuo Wakasugi, Special H'l Agency 1, Indication of the incident, 1932, 1, Y Revised Petition No. 1681'', 17 No. 2, Name of the invention, Blast Furnace Blowing Feather 1-1 No. 5, Relationship with the person making the amendment f'l Patent applicant 11: Address No. 3, 18, J Kyohama-cho, Yamanakao-ku, Kobe Name (], MJ) Representative of Kobe Steel, Ltd.
Takam P Kichi 4, Agent address: Tokyo; [, No. 901, Fujiwa Toyocho Co-op, 2-2-15 Minamisuna, Higashi-ku, 1: (6 Telephone (646) 61!J 45, Amendment Order II attached (self-motivated) ) ('r, t+li + IE's λ・J un(1) Detailed description of the invention in the specification A((, IIYI(2) Fig. 1(a)
) °7. Details of the amendment As shown in the attached sheet (1) Details l + 11th: 3 yj line 15 [feather I-1
If the wind speed is 1, it will be interpreted as 1 bird 11 wind speed 1. tl Figure (α) M<1
Claims (1)
−１、羽１１の中央部及び羽１’ｌの出１−１の径が次
の式を満足する形状である、ことを１．１１徴とする溶
鉱炉送風羽目。 １’） 、 ＞ Ｄ 、 ＜ １’） 。 １）１：羽１１の人１１の径 １）、二羽１−１の中央部の径 １）、二羽１］の出１１の径[Claims] A person 1 who is in the wing 1-1 of the Laval 7 type and who is in the wing 11
-1, a blast furnace air slat having the characteristic 1.11 that the diameter of the central part of the blade 11 and the diameter of the protrusion 1-1 of the blade 1'l satisfies the following formula; 1'), > D, <1'). 1) 1: diameter of the person 11 of wing 11 1), diameter of the central part of two wings 1-1 1), diameter of the outer part of wing 1]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16815782A JPS5956504A (en) | 1982-09-27 | 1982-09-27 | Blast tuyere of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16815782A JPS5956504A (en) | 1982-09-27 | 1982-09-27 | Blast tuyere of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5956504A true JPS5956504A (en) | 1984-04-02 |
| JPH0128804B2 JPH0128804B2 (en) | 1989-06-06 |
Family
ID=15862865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16815782A Granted JPS5956504A (en) | 1982-09-27 | 1982-09-27 | Blast tuyere of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5956504A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579486A1 (en) * | 1985-03-26 | 1986-10-03 | Canon Kk | METHOD FOR ADJUSTING THE SPEED OF FINE PARTICLES |
| KR101434308B1 (en) * | 2013-09-16 | 2014-08-26 | 현대로템 주식회사 | Tuyere for blast furnace |
-
1982
- 1982-09-27 JP JP16815782A patent/JPS5956504A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579486A1 (en) * | 1985-03-26 | 1986-10-03 | Canon Kk | METHOD FOR ADJUSTING THE SPEED OF FINE PARTICLES |
| KR101434308B1 (en) * | 2013-09-16 | 2014-08-26 | 현대로템 주식회사 | Tuyere for blast furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0128804B2 (en) | 1989-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2396068A (en) | Turbine | |
| US2473356A (en) | Combustion gas turbine arrangement | |
| GB1561229A (en) | Gas turbine engine cooling system | |
| CN105307931A (en) | Energy efficiency improvements for turbomachinery | |
| JPS62159701A (en) | Aerofoil section for turbine of gas turbine engine | |
| US20140373546A1 (en) | Method for discharging exhaust gas from a gas turbine and exhaust assembly having optimised configuration | |
| CN106761951A (en) | The leading edge cooling structure and the engine with it of a kind of turbine rotor blade | |
| GB596784A (en) | Improvements in and relating to elastic fluid turbines | |
| GB1222565A (en) | Gas turbine guide blade | |
| JPS5956504A (en) | Blast tuyere of blast furnace | |
| GB695948A (en) | Improvements in or relating to centrifugal gas compressors | |
| GB744196A (en) | Improvements in or relating to silencing means | |
| US11359595B2 (en) | Runner for a hydraulic turbine or pump and method of manufacturing | |
| JPS59105905A (en) | Diffuser for high output turbine | |
| US2899797A (en) | Turbocharger for internal combustion engines | |
| JPS59192898A (en) | Centrifugal impeller | |
| SU1000558A1 (en) | Diffusor | |
| US2077708A (en) | Airplane | |
| JPS56143399A (en) | Silencer for propeller fan | |
| GB192793A (en) | Improvements in and relating to turbines | |
| JP2014206085A (en) | Axial flow turbine | |
| GB111381A (en) | Improvements in Hot Air Turbines. | |
| US2370192A (en) | Gas turbine cooling arrangement | |
| US1541689A (en) | Means for decreasing the visibility of the wake of automobile torpedoes | |
| JPS5918202A (en) | Blade of gas turbine |