JPS5912286A - Method of adjusting circulating gas of coke dry type fire extinguishing facility - Google Patents
Method of adjusting circulating gas of coke dry type fire extinguishing facilityInfo
- Publication number
- JPS5912286A JPS5912286A JP57121703A JP12170382A JPS5912286A JP S5912286 A JPS5912286 A JP S5912286A JP 57121703 A JP57121703 A JP 57121703A JP 12170382 A JP12170382 A JP 12170382A JP S5912286 A JPS5912286 A JP S5912286A
- Authority
- JP
- Japan
- Prior art keywords
- circulating gas
- gas
- reduction reaction
- coke
- cooling
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Coke Industry (AREA)
- Manufacture Of Iron (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明はコークス乾式消火設備の冷却用循環ガスの成
分を調整する調整方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for adjusting the components of circulating gas for cooling in coke dry extinguishing equipment.
従来から、コークス炉から排出される赤熱コークスは、
消火塔に導き散水消火され、多くの蒸気と粉塵が発生し
ていた。近年、環境問題と省エネルギーを目的とした乾
式消火設備が開発され広く採用されている。コークス乾
式消火設備は、赤熱コークスを冷却塔に装入し、冷却塔
下部から冷却用の循環ガスを吹込みコークスを冷却し、
一方加熱された高温の循環ガスは排熱ボイラーに導き熱
回収を行なったのち再び冷却用循環ガスとして循環使用
するようになっている。Traditionally, red-hot coke discharged from coke ovens is
The fire was extinguished by water spraying in a fire tower, producing a lot of steam and dust. In recent years, dry fire extinguishing equipment has been developed and widely adopted for the purpose of environmental issues and energy conservation. Coke dry extinguishing equipment charges red-hot coke into a cooling tower and cools the coke by blowing cooling circulating gas from the bottom of the cooling tower.
On the other hand, the heated high-temperature circulating gas is led to an exhaust heat boiler for heat recovery, and is then recycled and used again as a cooling circulating gas.
このようなコークス乾式消火設備において、冷却用循環
ガスは繰返し使用すると赤熱コークスからのＮ２ガスあ
るいは、コークスの燃焼によるＣＯガス等の可燃性成分
が濃縮され循環ガスが爆発限界に達しガス爆発等の危険
性がある。そのため、循環ガスにＮ２ガスあるいは空気
を導入して可燃性成分を希釈し、希釈された循環ガスは
余剰となり余剰分は放散、あるいは回収されて残部を冷
却用循環ガスとして使用されている。しかし、このよう
な操業方法においては、大量の希釈用Ｎ２ガスあるいは
空気を必要とし、特にＮ２ガスを使用する場合は価格が
高く経済的に不利である。また、空気を使用する場合に
おいても循環ガス中に一時に多量の空気を導入すると爆
発の危険があるという欠点がある。In such coke dry fire extinguishing equipment, if the cooling circulating gas is used repeatedly, combustible components such as N2 gas from red-hot coke or CO gas from coke combustion will concentrate, and the circulating gas will reach the explosive limit, resulting in a gas explosion. There is a risk. Therefore, N2 gas or air is introduced into the circulating gas to dilute the combustible components, and the diluted circulating gas becomes surplus, and the surplus is dissipated or recovered, and the remainder is used as circulating gas for cooling. However, such an operating method requires a large amount of N2 gas or air for dilution, and the use of N2 gas is particularly expensive and economically disadvantageous. Further, even when air is used, there is a drawback that there is a risk of explosion if a large amount of air is introduced into the circulating gas at once.
この発明は、このような従来方法の欠点を解消するため
になされたもので、前記した冷却塔より排出される高温
の循環ガスの変質（可燃性成分の濃縮）に対してその組
成を適切に制御して常に適正な組成を維持せしめ安全か
つ有効な操業を図ることを目的どするものである。This invention was made to eliminate the drawbacks of such conventional methods, and it is necessary to appropriately adjust the composition of the high-temperature circulating gas discharged from the cooling tower (concentration of combustible components). The purpose of this is to maintain a proper composition at all times through control and to ensure safe and effective operation.
すなわち、この発明の要旨は、前述のコークス乾式消火
設備において、冷却塔から排出される高温の循環ガスの
一部または全部を、鉄鉱石を収容した還元反応塔へ導き
、循環ガス中に含まれる可燃性成分を還元反応に消費せ
しめて、これら可燃性成分の濃度を調整することを特徴
とするものである。That is, the gist of the present invention is that in the above-mentioned coke dry extinguishing equipment, part or all of the high temperature circulating gas discharged from the cooling tower is guided to a reduction reaction tower containing iron ore, and the iron ore contained in the circulating gas is This method is characterized by adjusting the concentration of combustible components by consuming them in a reduction reaction.
以下添付図面にもとづいてこの発明を説明する。The present invention will be explained below based on the accompanying drawings.
第１図はこの発明の実施態様を示す図である。（１）は
冷却塔であり、（２）は赤熱コークス、（３）は冷却用
循環ガス分配器でおる。装入された赤熱コークス（２）
はガス分配器（３）からの冷却用循環ガスにより冷却さ
れ切出し装置（４）から切出される。一方赤熱コークス
により加熱された循環ガスは冷却塔から連絡管（５）に
より除塵器（６）を通り排熱ボイラー（７）に導かれ熱
交換により蒸気を発生させ再び循環ブロアー（８）によ
り循環使用される。循環ガスが繰返し使用されると赤熱
コークスからのＮ２ガスあるいはＣＯガスが濃縮される
ため希釈ガス管（９）からＮ２ガスあるいは空気が導入
され、余剰ガスは放散口００から放散されるか、回収管
０１）から回収されるようになっている。この発明はこ
のようなコークス乾式消火設備において、冷却塔（１）
から排出される循環ガスの一部又は全部を分岐管０りに
より鉄鉱石を収容した還元反応塔０３に導き循環ガス中
に含まれる可燃性成分を鉄鉱石の還元反応に消費させて
連絡管（５）にもどし、循環ガス中の可燃性成分濃度を
調整するものである。分岐管θカに導く循環ガスの量は
循環ガス中の可燃性成分の濃度によって制御する。０荀
はガス組成検出器であり、０υは制御系、（ト）は流量
制御弁である。本発明の操業では、ガス組成検出器（１
４）により、一定時間間隔毎もしくは連続的に冷却塔よ
シ排出される循環ガスのガス分析を行ない、その分析値
と標準値とを比較して、Ｎ２ガスまたはＣＯガスの濃度
が上昇した場合には流量制御弁αＱを作動させ還元反応
塔部に収容された鉄鉱石と反応させＮ２をＮ２０に、Ｃ
ＯをＣＯ２に変化せしめてＮ２およびＣＯの濃度を低下
させる。FIG. 1 is a diagram showing an embodiment of the present invention. (1) is a cooling tower, (2) is red hot coke, and (3) is a cooling circulating gas distributor. Charged red hot coke (2)
is cooled by the cooling circulating gas from the gas distributor (3) and cut out from the cutting device (4). On the other hand, the circulating gas heated by the red hot coke is led from the cooling tower through the dust remover (6) through the connecting pipe (5) to the waste heat boiler (7), where it generates steam through heat exchange and is circulated again by the circulation blower (8). used. When the circulating gas is used repeatedly, the N2 gas or CO gas from the red hot coke becomes concentrated, so N2 gas or air is introduced from the dilution gas pipe (9), and the excess gas is dissipated from the dissipation port 00 or collected. It is designed to be collected from pipe 01). This invention provides a cooling tower (1) in such coke dry extinguishing equipment.
A part or all of the circulating gas discharged from the pipe is led to the reduction reaction tower 03 containing iron ore through a branch pipe, and the combustible components contained in the circulating gas are consumed in the reduction reaction of the iron ore. 5) to adjust the concentration of combustible components in the circulating gas. The amount of circulating gas introduced into the branch pipe θ is controlled by the concentration of combustible components in the circulating gas. 0 is a gas composition detector, 0υ is a control system, and (g) is a flow rate control valve. In the operation of the present invention, a gas composition detector (1
According to 4), if the concentration of N2 gas or CO gas has increased by performing a gas analysis of the circulating gas discharged from the cooling tower at fixed time intervals or continuously, and comparing the analytical value with the standard value. Then, the flow rate control valve αQ is operated to react with the iron ore contained in the reduction reaction tower section, converting N2 into N20 and C.
The concentration of N2 and CO is reduced by converting O to CO2.
反応式は下記（１）、（２）式による。The reaction formula is based on the following formulas (1) and (2).
８ Ｆｅ、 ｏ３＋ Ｎ２ →２ Ｆｅ３０４ ＋Ｈ２
０−＝・＝・” （１）８ Ｆｅ２ｏ３＋ＣＯ→２ Ｆ
ｅＢＯ４＋ＣＯ２−−−−（２）これらの機構に対して
はシーケンス制御機が付設されている。すなわち、前述
のような循環ガス組成変化に即して適宜流産制御弁Ｈを
開いて自動的に所定量の循環ガスを還元反応塔に送り込
むことにより常時一定の組成を有する循環ガスとなして
安全にかつ経済的なコークス消火操業を実施するもので
ある。第２図は循環ガス中Ｈ２％と還元反応塔への導入
ガス量および還元匿の関係を示す図である。横軸は還元
反応塔へ導入される循環ガス量であり、縦軸は鉄鉱石の
還元世と還元反応に（第 ５頁）
より消費されるＨｚｌである。消火設備が正常運転の場
合、循環ガス中のＮ２の濃度がＣ′褒の場合の還元反応
塔内の鉄鉱石の還元鑞Ｒ０Ｋｍｏ／／ｈ。8 Fe, o3+ N2 →2 Fe304 +H2
0−=・=・” (1)8 Fe2o3+CO→2 F
eBO4+CO2---(2) A sequence controller is attached to these mechanisms. That is, by opening the miscarriage control valve H as appropriate in accordance with the above-mentioned changes in the composition of the circulating gas and automatically sending a predetermined amount of the circulating gas to the reduction reaction tower, the circulating gas always has a constant composition and is therefore safe. The purpose is to carry out economical coke extinguishing operations. FIG. 2 is a diagram showing the relationship between H2% in the circulating gas, the amount of gas introduced into the reduction reaction tower, and reduction and storage. The horizontal axis is the amount of circulating gas introduced into the reduction reaction tower, and the vertical axis is the Hzl consumed by the reduction process of iron ore and the reduction reaction (page 5). When the fire extinguishing equipment is operating normally, the reduction of iron ore in the reduction reaction tower is R0Kmo//h when the concentration of N2 in the circulating gas is C'.
Ｎ２の消費鼠Ｒ１１Ｋｍｏｌ／ｂおよびそのために還元
反応塔へ導入が必要となるガス社はＶ Ｎｒｒｆ／ｈを
示すものである。今、循環ガス中のＮ２濃度がＣ１１，
に増加した場合は、
だけのＮ２ ｔｉｔが増加していることになり、定常状
態のＮ２濃度Ｃ％に維持するためには、この増加分を還
元反応塔で消費してやればよい。なお王妃（３）式中の
ＶＣは循環ガス社を表わしている。The consumption of N2 is R11 Kmol/b, and the amount of gas required to be introduced into the reduction reaction column is V Nrrf/h. Now, the N2 concentration in the circulating gas is C11,
If it increases to , it means that the N2 tit has increased by , and in order to maintain the steady state N2 concentration C%, this increase should be consumed in the reduction reaction tower. Note that VC in the Queen (3) formula represents Circulation Gas Company.
したがって還元反応塔において、
ＲＨ＝Ｒ日十ΔＲ１Ｉ ・・・・・・・−・・・・・
・・・・・−・・−・・・・・・・・・・・・・（４）
のＮ２を還元反応により消費するために還元反応塔へＶ
” Ｎｒｄ７＾の割合で循環ガスを導入すると還元反
応塔から排出されるガス中のＮ２濃度が低下し、排熱ボ
イラーへ導く前に還元反応塔からの排ガスを合流させる
と標準値に近いＮ２濃度とすることが可能となるもので
ある。Therefore, in the reduction reaction tower, RH=Rday+ΔR1I ・・・・・・・・・・・・・・・・・・
・・・・・・－・・−・・・・・・・・・・・・・・・・(4)
V to the reduction reaction tower to consume the N2 by reduction reaction.
” When circulating gas is introduced at a rate of Nrd7^, the N2 concentration in the gas discharged from the reduction reaction tower decreases, and when the exhaust gas from the reduction reaction tower is combined before being led to the waste heat boiler, the N2 concentration is close to the standard value. This makes it possible to do this.
実施例について説明する１、第１図に例示するコークス
乾式消火設備にこの発明調整方法を実施した。冷却塔に
赤熱コークスを１２０ Ｔ／ｈ装入し、１８０００ＯＮ
ｍ′／ｈの循環ガスを使用して操業した。Example 1: The adjustment method of the present invention was applied to the coke dry extinguishing equipment illustrated in FIG. 120 T/h of red hot coke was charged into the cooling tower, and the power was turned on at 18,000 ON.
The operation was carried out using circulating gas of m'/h.
第８図は操業経過を示す図である。横軸は操業経過時間
を示し、縦軸は、冷却浴出ロ循環ガス中Ｈ２係、排熱ボ
イラー人ロ循環ガス中Ｈ２％、還元反応塔への導入ガス
社を示す。図でわかるように操業経過時間１１時間頃か
ら冷却塔から排出される循環ガス中のＮ２％が上昇がは
じまり、排熱ボイラー人口の循環ガス中のＮ２濃度も」
二昇した。そのため１１時２０分より、還元反応塔に導
入する循環ガス量を１０００ＯＮｙｙ／／１１から２０
００ＯＮＦ７１１／ｈに増加した。その結果、排熱ボイ
ラー人口の循環ガスのＮ２ ％は低下し正常の５係に維
持された。FIG. 8 is a diagram showing the progress of operation. The horizontal axis shows the elapsed operation time, and the vertical axis shows the H2 percentage in the circulating gas leaving the cooling bath, the H2% in the circulating gas coming out of the exhaust heat boiler, and the amount of gas introduced into the reduction reaction tower. As can be seen in the figure, the N2% in the circulating gas discharged from the cooling tower began to rise from around 11 hours into operation, and the N2 concentration in the circulating gas of the exhaust heat boiler population also increased.
I got the second rank. Therefore, from 11:20, the amount of circulating gas introduced into the reduction reaction tower was increased from 1000 ONyy//11 to 20
00ONF increased to 711/h. As a result, the N2% of the circulating gas in the exhaust heat boiler decreased and was maintained at the normal level of 5.
また、還元反応塔の鉄鉱石は還元率が３０〜４０％の鉄
鉱石が排出され高炉原料として利用された。In addition, iron ore with a reduction rate of 30 to 40% was discharged from the reduction reaction tower and was used as a raw material for a blast furnace.
なお、実施例ならびに説明にＮ２濃度制御の例を示した
が、ＣＯ濃度制御においても全く同様手段により調整可
能であることは奮う１でもないことである。Although an example of N2 concentration control has been shown in the embodiments and explanation, it is no wonder that CO concentration control can be adjusted using exactly the same means.
以上のように、この発明調整方法は、循環ガス中のＮ２
ガスおるいはＣｏガスの濃度を下げるにおたつ’（、Ｎ
２ガスあるいは空気等の希釈ガスが全く不要となる。し
たがって余剰の循環ガスも発生しない。As described above, the adjustment method of this invention
It is possible to reduce the concentration of Co gas (, N
2 gas or a diluent gas such as air is completely unnecessary. Therefore, no surplus circulating gas is generated.
また、循環ガス中に含まれるＮ２やＣＯの還元能力を鉄
鉱石の還元に利用することにより有効に回収し、還元に
よって品位の高まった鉄鉱石を高炉に使用すること（Ｃ
より高炉のコークス比を低ドさせる則次的効果もある等
、多くの効果を有するものである。In addition, by utilizing the reducing ability of N2 and CO contained in the circulating gas to reduce iron ore, it is possible to effectively recover it and use the iron ore, which has been improved in quality through reduction, in the blast furnace (C
It has many effects, including the regular effect of lowering the coke ratio in the blast furnace.
第１図はこの発明の実施態様を示す図、第２図は循環ガ
ス中Ｈ２％と還元反応塔への導入ガス緻、および還元量
との関係を示す図、第８図は操業経過を示す図である。
図中、１・・・冷却塔、２・・・赤熱コークス、８・・
・分配器、４・・・切出し装置、５・・・連絡管、６・
・・除塵器、７・・・排熱ボイラー、８・・・循環ブロ
アー、９・・・希釈ガス管、１０・・・放散口、１１・
・・回収管、１２・・・分岐管、１３・・・還元反応塔
、１４・・・ガス組成検出器、１５・・・制御系、１６
・・・流嵐制御弁。
出願人 住友金属工業株式会社
第１図
１ｎ
第２図
第３図
経過時間（ｈｒ）Fig. 1 is a diagram showing an embodiment of the present invention, Fig. 2 is a diagram showing the relationship between H2% in the circulating gas, the concentration of gas introduced into the reduction reaction tower, and the amount of reduction, and Fig. 8 is a diagram showing the operation progress. It is a diagram. In the figure, 1... cooling tower, 2... red hot coke, 8...
・Distributor, 4... Cutting device, 5... Communication pipe, 6.
... Dust remover, 7... Exhaust heat boiler, 8... Circulation blower, 9... Dilution gas pipe, 10... Dissipation port, 11.
...Recovery pipe, 12... Branch pipe, 13... Reduction reaction tower, 14... Gas composition detector, 15... Control system, 16
...Flow storm control valve. Applicant: Sumitomo Metal Industries, Ltd. Figure 1 1n Figure 2 Figure 3 Elapsed time (hr)
Claims (1)
ガスを吹込み赤熱コークスを冷却し、一方加熱された循
環ガスを排熱ボイラーに導き熱回収したのち再び冷却用
循環ガスとして使用するようにしたコークス乾式消火設
備において、上記加熱された循環ガスの一部または全部
を、鉄鉱石を収容した還元反応塔へ導き、循環ガス中に
含まれる可燃性成分を還元反応に消費せしめて、これら
可燃性成分の濃度を調整することを特徴とするコークス
乾式消火設備の循環ガス調整方法。Red-hot coke is charged into a cooling tower, and cooling circulating gas is blown into the cooling tower to cool the red-hot coke.On the other hand, the heated circulating gas is led to an exhaust heat boiler for heat recovery and then used again as cooling circulating gas. In the coke dry extinguishing equipment, a part or all of the heated circulating gas is guided to a reduction reaction tower containing iron ore, and combustible components contained in the circulating gas are consumed in a reduction reaction. , a circulating gas adjustment method for coke dry extinguishing equipment, which is characterized by adjusting the concentration of these combustible components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57121703A JPS5912286A (en) | 1982-07-12 | 1982-07-12 | Method of adjusting circulating gas of coke dry type fire extinguishing facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57121703A JPS5912286A (en) | 1982-07-12 | 1982-07-12 | Method of adjusting circulating gas of coke dry type fire extinguishing facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5912286A true JPS5912286A (en) | 1984-01-21 |
Family
ID=14817785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57121703A Pending JPS5912286A (en) | 1982-07-12 | 1982-07-12 | Method of adjusting circulating gas of coke dry type fire extinguishing facility |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5912286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106635069A (en) * | 2016-10-27 | 2017-05-10 | 武汉科技大学 | Method for utilizing low-temperature waste heat of circulating gas in coke dry quenching system |
-
1982
- 1982-07-12 JP JP57121703A patent/JPS5912286A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106635069A (en) * | 2016-10-27 | 2017-05-10 | 武汉科技大学 | Method for utilizing low-temperature waste heat of circulating gas in coke dry quenching system |
| CN106635069B (en) * | 2016-10-27 | 2019-08-06 | 武汉科技大学 | A kind of dry quenching system recyclegas low temperature heat method |
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