JPH0456711A - Method for blowing fine powdered coal into blast furnace - Google Patents
Method for blowing fine powdered coal into blast furnaceInfo
- Publication number
- JPH0456711A JPH0456711A JP16678890A JP16678890A JPH0456711A JP H0456711 A JPH0456711 A JP H0456711A JP 16678890 A JP16678890 A JP 16678890A JP 16678890 A JP16678890 A JP 16678890A JP H0456711 A JPH0456711 A JP H0456711A
- Authority
- JP
- Japan
- Prior art keywords
- pulverized coal
- blast furnace
- powdered coal
- fine powdered
- amount
- 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
- 239000003245 coal Substances 0.000 title claims abstract description 79
- 238000007664 blowing Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 10
- 238000002347 injection Methods 0.000 claims abstract description 45
- 239000007924 injection Substances 0.000 claims abstract description 45
- 239000001257 hydrogen Substances 0.000 claims abstract description 32
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 32
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 29
- 238000005070 sampling Methods 0.000 abstract description 3
- 150000002431 hydrogen Chemical class 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000004817 gas chromatography Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241001227713 Chiron Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Landscapes
- Manufacture Of Iron (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は高炉炉内への微粉炭吹込み量を正確に制御する
ことができるようにした高炉への微粉炭吹込み制御方法
に関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for controlling the injection of pulverized coal into a blast furnace, which makes it possible to accurately control the amount of pulverized coal injected into the blast furnace. be.
〈従来の技術さ
従来からよく行われている高炉への微粉炭吹込み制御方
法は、第１図に示すようにサービスタンク８．インジェ
クションタンク７にそれぞれ設置されたロードセル６に
よって微粉炭の重量を測定し、これによって微粉炭の吹
込み量を制御するのを基本としている（特開昭５８−７
４４２６号、特開平１３１６４０５号公報参照）、その
補正手段として圧力調整器１３によってインジェクショ
ンタンク７の加圧値を調整する補正制御を加味して微粉
炭の吹込み量を制御していた。<Prior art> A conventional method of controlling the injection of pulverized coal into a blast furnace is as shown in FIG. Basically, the weight of pulverized coal is measured by load cells 6 installed in each injection tank 7, and the amount of pulverized coal injected is controlled based on this.
4426 and Japanese Patent Application Laid-open No. 1316405), the amount of pulverized coal injected was controlled by adding correction control to adjust the pressurization value of the injection tank 7 using the pressure regulator 13 as a correction means.
しかし前記の従来法を用いると、サービスタンク８．イ
ンジェクションタンク７の圧力変化に伴う慣性力の影響
による重量変化に対応するための推定項を加える必要が
あり、精度が悪くなる。またブローパイプ３および羽口
２を介して高炉１内へ吹込まれる送風圧変動等による外
乱からインジェクシ式ンタンク７．各微粉炭吹込み配管
ライン１４を介して微粉炭吹込みバーナ４に供給される
微粉炭の量が変化してしまうという問題点があった。However, if the conventional method described above is used, the service tank 8. It is necessary to add an estimation term to cope with the weight change due to the influence of inertia force accompanying the pressure change of the injection tank 7, which deteriorates accuracy. In addition, the injection type tank 7. There is a problem in that the amount of pulverized coal supplied to the pulverized coal injection burner 4 via each pulverized coal injection piping line 14 changes.
したがって、各吹込み配管ライン１４に粉体流量計（図
示せず）を設置し、微粉炭吹込みバーナ４から羽口２内
に吹込まれる微粉炭量を個別に測定しない限り正確な微
粉炭の吹込み量制御は困難である。また羽口２は高炉ｌ
の周壁に多数形成されているので多数の粉体流量針を必
要として不経済であるばかりでなく、粉体流量計の精度
はロードセルに比較すると劣るため必ずしも微粉炭の吹
込み量を正確に制御できることにならないという問題点
があった。Therefore, unless a powder flow meter (not shown) is installed in each injection piping line 14 and the amount of pulverized coal injected into the tuyere 2 from the pulverized coal injection burner 4 is individually measured, the accuracy of pulverized coal cannot be determined. It is difficult to control the amount of injection. In addition, the tuyere 2 is the blast furnace l.
Since a large number of powder flowmeters are formed on the peripheral wall of the pulverized coal, it is not only uneconomical as it requires a large number of powder flowmeters, but also the accuracy of powder flowmeters is inferior to that of load cells, so it is not always possible to precisely control the amount of pulverized coal injected. The problem was that it was not possible.
〈発明が解決しようとする課題〉
本発明は微粉炭を貯蔵するサービスタンク、インジェク
タぢンタンク等の圧力タンクに設置したロードセルによ
って測定される微粉炭の重量値のみによって高炉への微
粉炭吹込みを制御する問題点すなわち圧力タンク間の慣
性力差や、送風圧変動等に起因する微粉炭吹込量の精度
が低くなるという問題点を改善することができる高炉へ
の微粉炭吹込み制御方法を提供することを目的とするも
のである。<Problems to be Solved by the Invention> The present invention is capable of injecting pulverized coal into a blast furnace using only the weight value of pulverized coal measured by a load cell installed in a pressure tank such as a service tank or an injector tank for storing pulverized coal. Provides a method for controlling pulverized coal injection into a blast furnace that can improve the control problem, that is, the problem of low precision in the amount of pulverized coal injected due to differences in inertia between pressure tanks, fluctuations in blowing pressure, etc. The purpose is to
く課題を解決するための手段〉
前記の目的を達成するための本発明は、高炉羽目へ吹込
まれる微粉炭をロードセルで測定しつつ吹込むに際し、
高炉炉頂ガスを高炉炉頂部に配設された各々のアンプテ
ークから採取して、その水素成分を分析し、該水素成分
の変化情報に基いて各羽口に吹込む微粉炭の吹込み量を
制御することを特徴とする高炉への微粉炭吹込み制御方
法である。Means for Solving the Problems> In order to achieve the above object, the present invention has the following features: When pulverized coal is injected into the blast furnace lining while being measured with a load cell,
Blast furnace top gas is collected from each amp take installed at the top of the blast furnace, its hydrogen components are analyzed, and the amount of pulverized coal injected into each tuyere based on the information on changes in the hydrogen components. This is a method for controlling the injection of pulverized coal into a blast furnace.
く作用〉
圧力タンクに設置したロードセルで微粉炭量を測定しな
がら各りの高炉羽口へ吹込むに際し、微粉炭の吹込み量
の測定精度を向上させるため、実際の微粉炭吹込み量に
比例して発生する高炉炉頂ガス中の水素成分を測定する
。Effect> When injecting pulverized coal into each blast furnace tuyere while measuring the amount of pulverized coal with a load cell installed in a pressure tank, in order to improve the accuracy of measuring the amount of pulverized coal injected, the actual amount of pulverized coal injected is Measure the hydrogen component in the blast furnace top gas that is generated proportionally.
そして、ロードセルで測定される羽口への微粉炭吹込み
量と炉頂ガス中の水素成分値のバラツキを抑制するよう
に微粉炭の吹込み量を制御する。Then, the amount of pulverized coal injected is controlled so as to suppress variations in the amount of pulverized coal injected into the tuyere and the hydrogen component value in the furnace top gas, which are measured by the load cell.
すなわち水素成分値のバラツキが小さい場合には、従来
法と同様にロードセルで測定される微粉炭吹込値のみ、
または圧力タンクの加圧値を加味した補正値を用いて微
粉炭吹込み量を制御する。また水素成分値のバラツキが
大きい場合には水素成分値をロードセルによる微粉炭吹
込値に優先して吹込み量を制御する。In other words, when the variation in hydrogen component values is small, only the pulverized coal injection value measured with a load cell as in the conventional method,
Alternatively, the amount of pulverized coal injected is controlled using a correction value that takes into account the pressurization value of the pressure tank. Further, when the variation in the hydrogen component value is large, the hydrogen component value is given priority over the pulverized coal injection value by the load cell to control the injection amount.
〈実施例〉 以′下、本発明の実施例を図面に基いて説明する。<Example> Embodiments of the present invention will be described below with reference to the drawings.
第１図において、微粉炭はまずサービスタンク８に供給
された後、サービスタンク８からインジェクションタン
ク７に供給される。インジェクションタンク７から吹込
み配管ライン１４に導かれた微粉炭はブースタ配管ライ
ン１１から供給される高圧窒素ガスと共に微粉炭吹込み
バーナ４を介して羽口２内に導入され、ここでブローパ
イプ３および羽口２を通過する熱風と共に高炉１内に吹
込まれる。In FIG. 1, pulverized coal is first supplied to a service tank 8 and then supplied from the service tank 8 to an injection tank 7. The pulverized coal led from the injection tank 7 to the blowing piping line 14 is introduced into the tuyere 2 via the pulverized coal blowing burner 4 together with the high pressure nitrogen gas supplied from the booster piping line 11, where it is introduced into the blow pipe 3. It is blown into the blast furnace 1 along with the hot air passing through the tuyeres 2.
加圧タンクである微粉炭サービスタンク８およびインジ
ェクションタンク７に設置された各ロードセル６で検出
される微粉炭量が制御演算器１０に入力されるが、ここ
ではインジェクションタンク７のロードセル６で検出さ
れる微粉炭量の信号が制御演算器１０に入力されここで
、高炉１内に吹込まれる微粉炭吹込量が演算される。The amount of pulverized coal detected by each load cell 6 installed in the pulverized coal service tank 8 and the injection tank 7, which are pressurized tanks, is input to the control calculator 10. Here, the amount of pulverized coal detected by the load cell 6 of the injection tank 7 is A signal indicating the amount of pulverized coal is input to the control calculator 10, where the amount of pulverized coal injected into the blast furnace 1 is calculated.
また制御演算器ＩＯへは、インジェクションタンクに取
付けられた圧力調整器１３の圧力信号およびブースタ配
管ライン１１に取付けられた流量調節器１２の流量信号
も入力されており、インジェクションタンク７の加圧値
およびブースタ配管ライン１１の窒素ガス流量値を加味
して必要に応じて前記のロードセル６によって検出され
た微粉炭吹込量を補正することができるようになってい
る。In addition, a pressure signal from a pressure regulator 13 attached to the injection tank and a flow rate signal from a flow regulator 12 attached to the booster piping line 11 are also input to the control calculator IO, and the pressurized value of the injection tank 7 is inputted to the control calculator IO. The amount of pulverized coal injected detected by the load cell 6 can be corrected as necessary by taking into account the nitrogen gas flow rate value of the booster piping line 11.
一方、高炉１の炉頂部に配設されたアップテーク管１５
（通常４本）の各々に取付けられたガス採取管５によっ
て採取された炉頂ガスをガスクロマトグラフィー９に導
いて炉頂ガス中の水素成分を分析し、得られた水素成分
値の信号を制御演算器１０に入力される。On the other hand, the uptake pipe 15 installed at the top of the blast furnace 1
The furnace top gas collected by the gas sampling tubes 5 attached to each of the furnace top gases (usually 4 tubes) is guided to the gas chromatography 9 to analyze the hydrogen component in the furnace top gas, and the obtained hydrogen component value signal is It is input to the control calculator 10.
制御演算器１０では炉内への微粉炭吹込量および炉頂ガ
スの水素成分値に基いて下記の演算を実施した後、イン
ジェクションタンク７の圧力を圧力ｍ節器Ｉ３によって
ｍｗｉすると共に、ブースタ配管ライン１１の流量を流
量調節器１２によって調節し、高炉１への微粉炭吹込み
量のバラツキを抑制するようになっている。The control calculator 10 performs the following calculations based on the amount of pulverized coal injected into the furnace and the hydrogen component value of the furnace top gas, and then adjusts the pressure in the injection tank 7 to mwi by the pressure moderator I3, and also adjusts the pressure in the injection tank 7 to The flow rate of the line 11 is adjusted by a flow rate regulator 12 to suppress variations in the amount of pulverized coal injected into the blast furnace 1.
本発明においては第２図に示すように高炉１の周壁に形
成された多数の羽口２ごとに配置された微粉炭吹込みバ
ーナ４の各々に接続された微粉炭吹込み配管１４群を高
炉１の円周方向に複数に区分、例えば炉頂部の４本のア
ップテーク管１５に対応させてＡ−Ｄゾーンに４区分し
、この区分単位Ａ〜Ｄに対応するアンプテーク管１５か
ら採取された炉頂ガスの水素成分値に基いて微粉炭吹込
量を制御するものである。In the present invention, as shown in FIG. 1 is divided into a plurality of zones in the circumferential direction, for example, divided into four zones A to D corresponding to the four uptake pipes 15 at the top of the furnace, and the samples are collected from the uptake pipes 15 corresponding to the division units A to D. The amount of pulverized coal injected is controlled based on the hydrogen content of the top gas.
木実施例では、４木のアップテーク管１５からそれぞれ
採取された炉頂ガスの水素成分値の差がなくなるように
Ａ−Ｄ区分の各区分を１単位として各ゾーン毎のブース
タ配管ライン１１に供給される窒素ガス量を各ゾーン毎
にまとめてそれぞれの流量調節器１２によって調整する
ものである。このようにすることによりＡ−Ｄ区分に対
応するアップテーク管１５からそれぞれ採取される炉頂
ガス中の水素成分値のバラツキが低減されるようにイン
ジェクションタンク７から微粉炭吹込配管ライン１４に
供給される微粉炭量を制御演算器１０によって各Ａ−Ｄ
区分ごとにまとめて調整するものであり、これによって
各羽目に吹込まれるｖＩｌ粉炭量の均一化が達成される
。In the wooden embodiment, in order to eliminate the difference in the hydrogen component values of the top gases collected from the uptake pipes 15 of four trees, each section of the A-D section is treated as one unit and the booster piping line 11 of each zone is The amount of nitrogen gas supplied is adjusted for each zone by the respective flow rate regulators 12. By doing this, the pulverized coal is supplied from the injection tank 7 to the pulverized coal injection piping line 14 so as to reduce the variation in the hydrogen component value in the top gas collected from the uptake pipes 15 corresponding to the A-D divisions. A computer 10 controls the amount of pulverized coal produced in each A-D.
The adjustment is made for each section at once, thereby achieving uniformity of the amount of vIl pulverized coal injected into each section.
なお、前記実施例では４区分としたがこれに限定するも
のではなく、より細区分することによりより制御性が向
上するは云うまでもなく、区分数は適宜に選択すればよ
い。In the above embodiment, the number of divisions is four, but the number of divisions is not limited to this, and it goes without saying that the controllability can be further improved by dividing into smaller divisions, and the number of divisions may be selected as appropriate.
本発明の高炉への微粉炭吹込み制御方法の基本的考え方
は次の通りである。The basic concept of the method of controlling pulverized coal injection into a blast furnace of the present invention is as follows.
通常、高炉１の炉頂から採取したガス中の水素成分値は
２．５〜２．７％であり、炉内への微粉炭吹込みを開始
すると微粉炭吹込量７０ｋｇ／ ｔ−ｐｉｇでは水素成
分値は３，５％程度に上昇する。このように微粉炭吹込
みによって上昇する炉頂ガスの安定成分である水素成分
値を基準とするため、各アップテーク管１５から炉頂ガ
スを採取した後、ガスクロマトグラフィー９によって水
素成分を分析し、得られた水素成分値を微粉炭吹込量の
変化として把え、この水素成分値の差を解消するように
微粉炭の吹込量を増減するもので、具体的には水素成分
値が低ければ微粉炭の吹込量を増加し、高ければ減少さ
せて吹込量の均一化を図る。Normally, the hydrogen component value in the gas sampled from the top of the blast furnace 1 is 2.5 to 2.7%, and when the injection of pulverized coal into the furnace is started, the hydrogen content is 70 kg/t-pig. The component value increases to about 3.5%. In order to use the hydrogen component value, which is a stable component of the top gas that rises due to pulverized coal injection, as a reference, after collecting the top gas from each uptake pipe 15, the hydrogen component is analyzed by gas chromatography 9. Then, the obtained hydrogen component value is understood as a change in the amount of pulverized coal injected, and the amount of pulverized coal injected is increased or decreased to eliminate this difference in the hydrogen component value. Specifically, if the hydrogen component value is low, For example, the amount of pulverized coal injected is increased, and if it is high, it is decreased to equalize the amount of pulverized coal injected.
微粉炭吹込量制御のためのブースタ配管ライン■１への
窒素ガスの供給については次の考え方による。The supply of nitrogen gas to the booster piping line ■1 for controlling the amount of pulverized coal injection is based on the following concept.
（１）各羽口２へ供給される微粉炭吹込み配管ライン１
４の圧損を一定としてインジェクションタンク７から供
給される微粉炭量を一定になるようにしておくこと、
（２）微粉炭吹込み配管ライン１４中ヘブースタ配管ラ
イン１１を接続し、ブースタガス（窒素ガス）の供給に
より配管抵抗を変化させて′？Ｉ！粉炭吹込量を制御す
ること、
（３） ｍ粉炭吹込み配管ライン１４を数区分に分け
て、各区分を単位としてブースタ配管ラインに供給する
ブースタガス量をまとめて変化させ、区分毎にまとめて
微粉炭吹込量を調整させること、
（４）または前記（１）の圧損をブースタガスを加えて
円節して各ラインに均等にガスが流れるようにしておき
、その各ブースタガス量に加えて前記（２）の操作を加
えること。(1) Pulverized coal injection piping line 1 supplied to each tuyere 2
(2) Connect the booster piping line 11 to the pulverized coal injection piping line 14 and inject booster gas (nitrogen gas) into the pulverized coal injection piping line 14. ) by changing the piping resistance by supplying ′? I! (3) Divide the pulverized coal injection piping line 14 into several sections, and collectively change the amount of booster gas supplied to the booster piping line for each section; Adjust the amount of pulverized coal injected, (4) or reduce the pressure loss in (1) above by adding booster gas to make the gas flow evenly through each line, and add it to each booster gas amount. Adding the operation (2) above.
さらに水素値を制御値として制御するに際しては、例え
ば微粉炭吹込みによりアップテーク管１５における炉頂
ガスの水素成分値は３．５％になるが、この時、各アッ
プテーク管１５の水素成分値が３．５％を基準にして±
０．３％以上離れた値にバラツクときに°゛偏差り”と
して微粉炭吹込み量の制御を行うようにする。０．３％
より小さいバラツキでは高炉内の送風の脈動、高炉内へ
の原料装入人時の変動を拾い微粉炭吹込量制御の外乱に
なり好ましくない。Furthermore, when controlling the hydrogen value as a control value, for example, the hydrogen component value of the furnace top gas in the uptake pipe 15 becomes 3.5% due to pulverized coal injection. ± based on the value of 3.5%
When the value differs by 0.3% or more, the amount of pulverized coal injection is controlled as a deviation.0.3%
A smaller variation is undesirable because it picks up the pulsation of air in the blast furnace and fluctuations in the number of people charging raw materials into the blast furnace, which disturbs the control of the amount of pulverized coal injected.
また微粉炭吹込量の変化を把握するためには分析により
得られた水素成分値の直前の平均値に基いて判定する。In addition, in order to understand changes in the amount of pulverized coal injected, judgment is made based on the immediately preceding average value of hydrogen component values obtained by analysis.
原料装入時の変動をもろに拾わぬようにするため所定時
間内の平均値を用いるものであり、高炉の実操業上は直
前の１０分間の平均値を用いるのが好ましく、例えば９
０秒毎に炉頂ガス中の水素成分値を分析し、直前１ｏ分
間の平均水素値が１％以上変化したときに本発明による
制御を開始する。In order to avoid picking up fluctuations during raw material charging, the average value within a predetermined period of time is used.In actual operation of a blast furnace, it is preferable to use the average value for the immediately preceding 10 minutes.For example, 9.
The hydrogen component value in the furnace top gas is analyzed every 0 seconds, and the control according to the present invention is started when the average hydrogen value for the previous 10 minutes changes by 1% or more.
本発明法の実施効果を炉頂ガス中の水素値（Ｈ２％）お
よび微粉炭吹込み速度（ｋｇ／５ｉｎ）の経時変化によ
り従来法と比較して第３図に示す、第３図に示すように
本発明によれば従来法に比較して微粉炭吹込量のオフセ
ット量が減少するばかりでなく、従来法では制御するこ
とができなかった慣性力支配時間帯での微粉炭吹込量の
精度が向上するため炉頂ガス中のＨ，（％）のバラツキ
が激減していることが明らかである。Figure 3 shows the effect of implementing the method of the present invention compared with the conventional method by looking at changes over time in the hydrogen value (H2%) in the furnace top gas and the pulverized coal injection rate (kg/5in). As can be seen, the present invention not only reduces the offset amount of the pulverized coal injection amount compared to the conventional method, but also improves the accuracy of the pulverized coal injection amount during the inertial force dominated time period, which could not be controlled with the conventional method. It is clear that the variation in H (%) in the furnace top gas has been drastically reduced due to the improvement in H.
本発明の制御を５日間、同一操業条件下で実施したとこ
ろ第１表に示すように誇高炉操業データについてもバラ
ツキ低減効果が現われ、本発明法が効果的であることが
証明された。When the control of the present invention was carried out for 5 days under the same operating conditions, as shown in Table 1, the effect of reducing variations in blast furnace operation data also appeared, proving that the method of the present invention is effective.
〈発明の効果〉
以上説明したように本発明によれば高炉羽目から吹込ま
れる微粉炭吹込量の均一化が達成されるので、高炉操業
が安定し、特に高炉操業の燃料比低減に著しい効果を奏
することができる。<Effects of the Invention> As explained above, according to the present invention, it is possible to equalize the amount of pulverized coal injected from the blast furnace lining, so that the blast furnace operation is stabilized, and in particular, it has a remarkable effect on reducing the fuel ratio in the blast furnace operation. can be played.
第１図は本発明法の実施例に係る装置の概略配置を示す
側面図、第２図は第１図に関連する装置の概略配置を示
す平面図、第３図は炉頂ガス中のＨ，（％）および微粉
炭吹込み速度（ｋｇ ／ ｍ ｉ ｎ ）の高炉操業中
における経時変化を本発明法と従来法について比較して
示すｗＡｖである。
１・・・高炉、 ２・・・羽口、３・・・ブ
ローバイブ、
４・・・微粉炭吹込みバーナー
５・・・炉頂ガスサンプリング管、
６・・・ロードセル、
７・・・インジェクシロンタンク、
８・・・サービスタンク、
９・・・ガスクロマトグラフィー
１０・・・吹込み制御演算器、
１１・・・ブースタ配管ライン、
１２・・・流量調節器、 １３・・・圧力調節器、１
４・・・微粉炭吹込み配管ライン、
１５・・・アップテーク管。
第１図Fig. 1 is a side view showing a schematic arrangement of an apparatus according to an embodiment of the method of the present invention, Fig. 2 is a plan view showing a schematic arrangement of an apparatus related to Fig. 1, and Fig. 3 shows H , (%) and pulverized coal injection rate (kg/min) over time during blast furnace operation for the method of the present invention and the conventional method. 1... Blast furnace, 2... Tuyere, 3... Blow vibe, 4... Pulverized coal injection burner 5... Furnace top gas sampling pipe, 6... Load cell, 7... Injector Chiron tank, 8... Service tank, 9... Gas chromatography 10... Blow control calculator, 11... Booster piping line, 12... Flow rate regulator, 13... Pressure regulator ,1
4...Pulverized coal injection piping line, 15...Uptake pipe. Figure 1
Claims (1)
つつ吹込むに際し、高炉炉頂ガスを高炉炉頂部に配設さ
れた各々のアップテークから採取して、その水素成分を
分析し、該水素成分の変化情報に基いて各羽口に吹込む
微粉炭の吹込み量を制御することを特徴とする高炉への
微粉炭吹込み制御方法。When blowing while measuring the amount of pulverized coal supplied to the blast furnace tuyeres with a load cell, blast furnace top gas is collected from each uptake installed at the top of the blast furnace, its hydrogen components are analyzed, and the A method for controlling the injection of pulverized coal into a blast furnace, characterized by controlling the amount of pulverized coal injected into each tuyere based on information on changes in hydrogen components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16678890A JPH079013B2 (en) | 1990-06-27 | 1990-06-27 | Control method of pulverized coal injection into blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16678890A JPH079013B2 (en) | 1990-06-27 | 1990-06-27 | Control method of pulverized coal injection into blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0456711A true JPH0456711A (en) | 1992-02-24 |
| JPH079013B2 JPH079013B2 (en) | 1995-02-01 |
Family
ID=15837689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16678890A Expired - Fee Related JPH079013B2 (en) | 1990-06-27 | 1990-06-27 | Control method of pulverized coal injection into blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079013B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101857909B1 (en) * | 2017-02-20 | 2018-05-14 | 현대제철 주식회사 | Neutral hydrogen gas injection amount control method of blast furnace |
-
1990
- 1990-06-27 JP JP16678890A patent/JPH079013B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH079013B2 (en) | 1995-02-01 |
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