JPH0723505B2 - Operation method of billet heating equipment using exhaust gas - Google Patents
Operation method of billet heating equipment using exhaust gasInfo
- Publication number
- JPH0723505B2 JPH0723505B2 JP60239733A JP23973385A JPH0723505B2 JP H0723505 B2 JPH0723505 B2 JP H0723505B2 JP 60239733 A JP60239733 A JP 60239733A JP 23973385 A JP23973385 A JP 23973385A JP H0723505 B2 JPH0723505 B2 JP H0723505B2
- Authority
- JP
- Japan
- Prior art keywords
- billet
- exhaust gas
- heating
- chimney
- heating furnace
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims description 58
- 238000000034 method Methods 0.000 title claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000011017 operating method Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は製鋼工場から圧延工場へ運ばれる鋼片の条件、
すなわち、鋼片の温度、装入加熱までの時間等により、
鋼片加熱炉から出た排ガスを熱経済的に最も有利な条件
（経路）で熱回収する鋼片加熱設備の排ガス利用運転方
法に関するものである。TECHNICAL FIELD OF THE INVENTION The present invention relates to conditions for billets transported from a steel mill to a rolling mill,
That is, depending on the temperature of the billet, the time until the charging heating,
The present invention relates to an exhaust gas utilization operating method of a billet heating facility for recovering heat from exhaust gas emitted from a billet heating furnace under the most thermodynamically advantageous condition (path).
従来の技術 従来、鋼片加熱設備における熱回収のための排ガスの利
用ケースは次の如く分類され、行われている。2. Description of the Related Art Conventionally, use cases of exhaust gas for heat recovery in billet heating equipment are classified and carried out as follows.
＜モデル１＞ 鋼片加熱炉→燃焼用空気予熱装置→煙突 ＜モデル２＞ 鋼片加熱炉→加熱前鋼片の予熱又は保温
装置→煙突 ＜モデル３＞ 鋼片加熱炉→燃焼用空気予熱装置→加熱
前鋼片の予熱又は保温装置→煙突 ＜モデル４＞ 鋼片加熱炉→加熱前鋼片の予熱又は保温
装置→燃焼用空気予熱装置→煙突 ＜モデル５＞ 鋼片加熱炉→煙突 発明が解決しようとする問題点 従来、鋼片加熱炉設備において省エネルギーを目的とし
た熱回収方法は、前記のモデル１、モデル２、モデル
３、モデル４が代表的モデルであるが、各モデルケース
とも単一の排ガス経路で使用されており、各々のモデル
を併用することができないので、必らずしも満足のでき
るものではなかつた。又、被加熱鋼片は常温から約1000
℃まで温度のばらつきが大きく、加熱前鋼片の予熱又は
保温装置への加熱炉排ガスの単一経路供給には問題があ
る。<Model 1> Steel billet heating furnace → Combustion air preheating device → Chimney <Model 2> Steel billet heating furnace → Preheating or preheating device for preheating steel bill → Chimney <Model 3> Steel billet heating furnace → Combustion air preheating device → Pre-heating or heat-retaining device for pre-heating billet → Chimney <Model 4> Billet heating furnace → Pre-heating or pre-heating device for pre-heating billet → Combustion air pre-heating device → Chimney <Model 5> Billet heating furnace → Chimney Problems to be Solved Conventionally, in the heat recovery method for the purpose of energy saving in the billet heating furnace facility, the above model 1, model 2, model 3 and model 4 are typical models, but each model case is Since it was used in one exhaust gas route and each model could not be used together, it was not necessarily satisfactory. In addition, the steel billet to be heated is about 1000 from room temperature.
Since there is a large temperature variation up to ℃, there is a problem in preheating of the pre-heating billet or single-path supply of the furnace exhaust gas to the heat retaining device.
本発明は従来方式の単一の排ガス経路による熱回収の欠
点を改良し、鋼片加熱設備から出る排ガスを最も有効に
使用できる熱経済的に有利な鋼片加熱設備の排ガス利用
による運転方法を提供しようとするものである。INDUSTRIAL APPLICABILITY The present invention improves the drawbacks of heat recovery by a single exhaust gas path of the conventional method, and provides a thermo-economically advantageous operating method of exhaust gas of a billet heating equipment that can most effectively use the exhaust gas from the billet heating equipment. It is the one we are trying to provide.
問題点を解決するための手段 本発明を実施例図について説明すると、鋼片加熱設備
（FR）の排ガスを、燃焼用空気予熱装置（Ｒ）と、温度
が常温から摂氏約1000度までばらつく被加熱鋼片を予熱
或いは保温する加熱前鋼片予熱又は保温装置（Ｆ）、
（Ｆ）と、さらに昇圧フアン（排風機）（Ｂ）を経て煙
突（Ｓ）へと、複数の分岐排ガス経路（ａ）、（ｂ）、
（ｃ）、（ｄ）、（ｅ）、（ｆ）、（ｇ）とその分岐排
ガス経路に設けた多数のバルブ(V1)、(V2)、(V3)、(V4)、(V
5)、(V6)、(V7)、(V8)の操作によつて、順不同に排ガス経
路を自由自在に切り替えることにより、鋼片加熱設備の
必要とする前記装置へ排ガスを導入させ、熱経済的に最
も有利な経路で熱回収するものである。Means for Solving the Problems The present invention will be described with reference to an embodiment diagram. Exhaust gas of a billet heating facility (FR) is mixed with a combustion air preheating device (R) and the temperature varies from room temperature to about 1000 degrees Celsius. Pre-heating billet preheating or heat-retaining device (F) for preheating or retaining heat of the heated billet
(F) and further through the booster fan (blower) (B) to the chimney (S), a plurality of branch exhaust gas paths (a), (b),
(C), (d), (e), (f), (g) and a large number of valves (V 1 ), (V 2 ), (V 3 ), (V 4 ), which are provided in the branch exhaust gas passage, (V
5 ), (V 6 ), (V 7 ), and (V 8 ), the exhaust gas path can be freely switched in any order to introduce the exhaust gas into the device required for the billet heating equipment. , Which recovers heat through the most economically economical route.
作用 この発明の鋼片加熱設備の排ガス利用による運転方式の
モデルケースとして、 1.鋼片加熱設備（RF）から出る排ガスを燃焼用空気予熱
装置（Ｒ）に導入して排ガス熱を回収使用し、昇圧フア
ン（排風機）（Ｂ）を経て煙突（Ｓ）に排気する場合
は、バルブ(V1)、(V3)、(V4)、(V5)、(V8)を閉（OFF）、バ
ルブ(V2)、(V6)、(V7)を開（ON）に切替える。Action As a model case of the operating method using exhaust gas of the billet heating equipment of the present invention, 1. The exhaust gas emitted from the billet heating equipment (RF) is introduced into the combustion air preheating device (R) to recover and use the exhaust gas heat. , When exhausting to the chimney (S) via the boost fan (blower) (B), close the valves (V 1 ), (V 3 ), (V 4 ), (V 5 ), (V 8 ). OFF), valves (V 2 ), (V 6 ), (V 7 ) to open (ON).
2.鋼片加熱設備（RF）の排ガスを加熱前鋼片予熱装置又
は保温装置（Ｆ）に導入して熱回収させ、昇圧フアン
（排風機）（Ｂ）を経て煙突に排気する場合は、バルブ
(V1)、(V4)を開（ON）、バルブ(V2)、(V3)、(V5)、(V6)、
(V7)、(V8)を閉（OFF）に切替える。2. When the exhaust gas from the billet heating equipment (RF) is introduced into the pre-heating billet preheating device or the heat retaining device (F) to recover heat, and exhausted to the chimney via the boost fan (blower) (B), valve
Open (V 1 ), (V 4 ) (ON), valve (V 2 ), (V 3 ), (V 5 ), (V 6 ),
Switch (V 7 ) and (V 8 ) to closed (OFF).
3.鋼片加熱設備（RF）の排ガスを燃焼用空気予熱装置
（Ｒ）→加熱前鋼片予熱又は保温装置（Ｆ）に導入して
熱回収させた後、昇圧フアン（排風機）（Ｂ）を経て煙
突に排気させる場合は、バルブ(V1)、(V3)、(V6)、(V8)を
閉（OFF）、バルブ(V2)、(V4)、(V5)、(V7)を開（ON）に切
替える。3. Exhaust gas from the billet heating equipment (RF) is introduced into the combustion air preheater (R) → pre-heating billet preheater or heat retainer (F) to recover the heat, and then the boost fan (exhaust fan) (B) ) To exhaust to the chimney, close valves (V 1 ), (V 3 ), (V 6 ), (V 8 ) (OFF), valves (V 2 ), (V 4 ), (V 5 ), (V 7 ) to open (ON).
4.鋼片加熱設備（RF）の排ガスを加熱前鋼片予熱又は保
温装置（Ｆ）→燃焼用空気予熱装置（Ｒ）に導入して熱
回収させた後、昇圧フアン（排風機）（Ｂ）→煙突
（Ｓ）に排気する場合は、バルブ(V1)、(V3)、(V6)、(V7)
を開（ON）、バルブ(V2)、(V4)、(V5)、(V8)を閉（OFF）に
切替える。4. Exhaust gas from the billet heating equipment (RF) is introduced into the pre-heating billet preheating or heat retaining device (F) → combustion air preheating device (R) to recover heat, and then the pressure booster fan (exhaust fan) (B) ) → When exhausting to the chimney (S), valves (V 1 ), (V 3 ), (V 6 ), (V 7 ).
Open (ON) and switch valves (V 2 ), (V 4 ), (V 5 ), and (V 8 ) to closed (OFF).
5.鋼片加熱設備（RF）の排ガスを昇圧フアン（排風機）
を経て煙突に排気する場合は、バルブ(V2)、(V8)を開（O
N）、バルブ(V1)、(V3)、(V4)、(V5)、(V6)、(V7)を閉（OF
F）に切替える。5. Boost fan for exhaust gas from billet heating equipment (RF) (exhaust fan)
When exhausting to the chimney via the valve, open the valves (V 2 ) and (V 8 ) (O
N), valves (V 1 ), (V 3 ), (V 4 ), (V 5 ), (V 6 ), (V 7 ) are closed (OF
Switch to F).
上記運転操作方法を表にまとめて下記に示す。The above operation methods are summarized in the table below.
実施例 本発明の一実施例を図面について説明すると、（RF）は
鋼片加熱設備（加熱炉）、（Ｆ）は加熱前鋼片予熱又は
保温装置で、常温から摂氏約1000度までばらつきのある
被加熱鋼片を装入して予熱又は保温するものである。
（Ｒ）は燃焼用空気予熱装置で、燃焼用空気は鋼片加熱
設備に供給される。（Ｂ）は昇圧フアン（排風機）、
（Ｓ）は煙突である。 EXAMPLE An example of the present invention will be described with reference to the drawings. (RF) is a billet heating equipment (heating furnace), and (F) is a billet preheating or heat retaining device before heating, which varies from room temperature to about 1000 degrees Celsius. It is to preheat or keep warm by charging a certain steel piece to be heated.
(R) is a combustion air preheating device, and the combustion air is supplied to the billet heating equipment. (B) is a boost fan (exhaust fan),
(S) is a chimney.
（ａ）、（ｂ）、（ｃ）、（ｄ）、（ｅ）、（ｆ）、
（ｇ）は鋼片加熱設備における多岐の排ガス経路、(V1)
〜(V8)は前記の各排ガス経路に設けたガス経路切替のた
めのバルブである。(A), (b), (c), (d), (e), (f),
(G) Various exhaust gas paths in billet heating equipment, (V 1 )
The symbols (V 8 ) to (V 8 ) are gas path switching valves provided in the respective exhaust gas paths.
発明の効果 以上説明したように、本発明の鋼片加熱設備の排ガス利
用による運転方式は、従来方式の如く、鋼片加熱炉から
出る高温排ガスを燃焼用空気予熱装置、昇圧フアンを経
て煙突への経路と、鋼片加熱炉から加熱前鋼片予熱又は
保温装置、昇圧フアンを経て煙突への経路と、鋼片加熱
炉から燃焼用空気予熱装置、加熱前鋼片予熱又は保温装
置、昇圧フアンを経て煙突への経路と、鋼片加熱炉から
加熱前鋼片予熱又は保温装置、燃焼用空気予熱装置、昇
圧フアンを経て煙突への経路と、鋼片加熱炉から昇圧フ
アンを経て煙突への経路へと、それぞれ一定順路の単一
の排ガス経路で熱回収していたものを、分岐排ガス経路
と、切替用バルブを設けて一つにまとめ、順不同に排ガ
ス経路を自在に切替えることにより、従来の単一経路で
は比較的高温でもそのまま放散される傾向にあった排ガ
スを、簡単かつ容易に、鋼片加熱設備、装置のいかなる
排ガス経路にも切替えることができ、熱経済的に最も有
利な条件での熱回収が可能となり、燃料消費量の低減に
大きく寄与し、コストを大巾に低下させることができる
特徴を有するものである。EFFECTS OF THE INVENTION As described above, the operating method using the exhaust gas of the billet heating equipment of the present invention is, like the conventional method, the high temperature exhaust gas discharged from the billet heating furnace to the chimney through the combustion air preheating device and the boosting fan. , The path from the billet heating furnace to the pre-heating billet preheating or heat retaining device, the booster fan to the chimney, and the billet heating furnace to the combustion air preheating device, the pre-heating billet preheating or heat retaining device, the boosting fan. From the billet heating furnace to the chimney via the pre-heating billet preheating or heat retention device, the combustion air preheating device, the boost fan and the chimney, and from the billet heating furnace to the chimney via By collecting heat from a single exhaust gas path with a fixed route to each path, a branch exhaust gas path and a switching valve are combined into one, and the exhaust gas path can be freely switched in any order. Comparison in a single path of Exhaust gas, which tends to be emitted as it is even at extremely high temperatures, can be easily and easily switched to any exhaust gas path of the billet heating equipment and equipment, enabling heat recovery under the most economically advantageous conditions. Therefore, it has a feature that it greatly contributes to the reduction of fuel consumption and can significantly reduce the cost.
図面は本発明の一実施例を示す説明図である。 （RF）…鋼片加熱設備、（Ｆ）…加熱前鋼片予熱又は保
温装置、（Ｒ）…燃焼用空気予熱装置、（Ｂ）…昇圧フ
アン（排風機）、（Ｓ）…煙突、(V1)〜(V8)…バルブ。
（ａ）〜（ｇ）…分岐した排ガス経路。The drawings are explanatory views showing an embodiment of the present invention. (RF) ... Billet heating equipment, (F) ... Pre-heating billet preheating or heat retaining device, (R) ... Combustion air preheating device, (B) ... Booster fan (exhaust fan), (S) ... Chimney, ( V 1 ) to (V 8 ) ... Valve.
(A)-(g) ... Branched exhaust gas path.
Claims (1)
置、昇圧フアンを経て煙突への経路と、鋼片加熱炉か
ら、温度が常温から摂氏約1000度までばらつく被加熱鋼
片の加熱前鋼片予熱又は保温装置、昇圧フアンを経て煙
突への経路と、鋼片加熱炉から燃焼用空気予熱装置、加
熱前鋼片予熱又は保温装置、昇圧フアンを経て煙突への
経路と、鋼片加熱炉から加熱前鋼片予熱又は保温装置、
燃焼用空気予熱装置、昇圧フアンを経て煙突への経路
と、鋼片加熱炉から昇圧フアンを経て煙突へと、複数の
分岐排ガス経路とそのガス経路への所定数の切替用のバ
ルブとによって、順不同に排ガス経路を自在に切り替え
ることにより、熱経済的に最も有利な経路で熱回収させ
る鋼片加熱設備の排ガス利用による運転方法。Claims: 1. Exhaust gas from a billet heating furnace is routed to a chimney through a combustion air preheating device and a pressure increasing fan, and from a billet heating furnace to a heated billet whose temperature varies from room temperature to about 1000 degrees Celsius. Pre-heating billet preheating or heat retention device, path to the chimney via the boost fan, and a combustion air preheating device from the billet heating furnace, pre-heating billet preheating or heat retention device, path to the chimney via the boost fan, and steel Before heating from one side heating furnace to preheating or keeping heat of steel bill,
Combustion air preheating device, a path to the chimney via a pressure boost fan, from the billet heating furnace to the chimney via a pressure boost fan, a plurality of branch exhaust gas paths and a predetermined number of switching valves to the gas path, An operation method using exhaust gas for billet heating equipment that recovers heat in the most economically economical route by freely switching exhaust gas routes in any order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60239733A JPH0723505B2 (en) | 1985-10-26 | 1985-10-26 | Operation method of billet heating equipment using exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60239733A JPH0723505B2 (en) | 1985-10-26 | 1985-10-26 | Operation method of billet heating equipment using exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6299415A JPS6299415A (en) | 1987-05-08 |
| JPH0723505B2 true JPH0723505B2 (en) | 1995-03-15 |
Family
ID=17049119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60239733A Expired - Lifetime JPH0723505B2 (en) | 1985-10-26 | 1985-10-26 | Operation method of billet heating equipment using exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723505B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007003065A (en) * | 2005-06-22 | 2007-01-11 | Sanyo Special Steel Co Ltd | Twin-chamber furnace and steel heating method |
| CN113523175B (en) * | 2021-06-24 | 2022-08-02 | 河南中原特钢装备制造有限公司 | A heating process for preheating cold ingots with waste heat of heating furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572978A (en) * | 1980-06-10 | 1982-01-08 | Kawasaki Heavy Ind Ltd | Cooling water circulating circuit for exhaust gas treating device of metallurgic furnace |
-
1985
- 1985-10-26 JP JP60239733A patent/JPH0723505B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6299415A (en) | 1987-05-08 |
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