JPS62151590A - Equipment for recovering sensible heat of metallic strip and pickling said strip - Google Patents
Equipment for recovering sensible heat of metallic strip and pickling said stripInfo
- Publication number
- JPS62151590A JPS62151590A JP60292143A JP29214385A JPS62151590A JP S62151590 A JPS62151590 A JP S62151590A JP 60292143 A JP60292143 A JP 60292143A JP 29214385 A JP29214385 A JP 29214385A JP S62151590 A JPS62151590 A JP S62151590A
- Authority
- JP
- Japan
- Prior art keywords
- pickling
- strip
- sensible heat
- fluidized bed
- equipment
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、熱間圧延後の鋼ストリップの如き高温金属帯
から、その保有する顕熱を効率良く回収すると共に引き
続きスケール除去のため酸洗する設備に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention efficiently recovers the sensible heat possessed by a high temperature metal strip such as a hot rolled steel strip and subsequently performs pickling to remove scale. related to equipment.
(従来の技術)
例えば、熱間圧延後の鋼ストリツプコイルは、通常50
0〜9006C程度の温度を右しているが、このストリ
ップコイルは水冷あるいは放冷してそのまま出荷するか
、又は50°C程度まて冷却して酸洗した後、冷間圧延
工程へ送るかしており、該ストリップコイルの保有する
顕熱は利用されていなかった。それで近年、この熱間圧
延コイルの保有する熱を回収して再利用を計る試みかな
されてきている。(Prior Art) For example, a steel strip coil after hot rolling usually has a
The temperature is about 0 to 9006C, but the strip coil should be water-cooled or air-cooled and shipped as is, or it should be cooled to about 50°C and pickled before being sent to the cold rolling process. Therefore, the sensible heat possessed by the strip coil was not utilized. Therefore, in recent years, attempts have been made to recover and reuse the heat held by this hot rolled coil.
しかして、この種の鋼ストリップの顕熱回収手段として
は、溶融塩槽を用いる方式か一般的である。その代表的
なものとして特開昭57−188683号公報か知られ
ているか、その内容は溶融塩槽にストリップを浸漬し、
該ストリップの顕熱を溶融塩に移行せしめ、溶融塩槽中
に内蔵した蒸気発生管等により顕熱を回収することにあ
る。そしてその設備としては、溶融塩槽、塩洗浄槽、ド
ライヤ、ループカー、酸洗槽を連続的に配置したちので
ある。However, as a sensible heat recovery means for this type of steel strip, a method using a molten salt bath is generally used. A representative example of this is known as Japanese Patent Application Laid-Open No. 57-188683, which describes that a strip is immersed in a molten salt bath.
The purpose is to transfer the sensible heat of the strip to the molten salt, and recover the sensible heat using a steam generating pipe or the like built into the molten salt tank. The equipment included a molten salt tank, a salt cleaning tank, a dryer, a loop car, and a pickling tank.
(発明か解決しようとする問題点)
しかしなから、このような溶融塩を用いる顕熱回収設備
は次のような欠点を有している。(Problems to be Solved by the Invention) However, such sensible heat recovery equipment using molten salt has the following drawbacks.
■ストリ・ンプに溶融塩が付着するため、これを除去す
るための洗浄工程か必要となるため、ストリップの顕熱
(200°C)が洗浄槽てロスする。(2) Since molten salt adheres to the strip, a cleaning process is required to remove it, and the sensible heat (200°C) of the strip is lost in the cleaning tank.
■洗浄後のドライヤー乾燥のためエア昇温用エネルギな
要する。■Drying with a dryer after cleaning requires energy to heat up the air.
■通常、酸洗槽ては酸洗蒔間短縮のため、85〜90℃
程度で酸洗を行うか、酸洗槽に入るストリップは60°
C程度であるため槽に入る前に再加熱する必要がある。■Normally, the pickling tank is 85-90℃ to shorten the time between pickling and sowing.
Pickling is carried out at about 60° or the strip entering the pickling tank is
Since it is around C, it is necessary to reheat it before entering the tank.
以上のように従来の手段はエネルギ面で大きな無駄かあ
った。As mentioned above, the conventional means were a great waste of energy.
本発明はこのような問題点を解決し、省エネルギを達成
すると同時に効率的な金属帯の顕熱回収を可能にした設
備を提供することを目的とするものである。It is an object of the present invention to solve these problems and provide equipment that achieves energy savings and at the same time enables efficient sensible heat recovery from a metal strip.
(問題点を解決するための手段)
この目的を達成するための本発明設備は、次のように構
成される。すなわち。(Means for Solving the Problems) The equipment of the present invention for achieving this objective is configured as follows. Namely.
熱間圧延後のコイル状金属帯を高温状態のまま′巻戻し
する巻戻し機と、鎖巻戻し機に続いて設置され先後行コ
イルを接わりする溶接機と、次いで蒸気発生管を内蔵或
いは熱交換器を配置した高温金属(+FのWJ8回収用
粉体流動層と、該流動層の後位に配置した金74帯の酸
洗を行う酸洗槽とからなることを特徴とする金属帯の顕
熱回収・酸洗設備である。An unwinding machine that unwinds the hot-rolled coiled metal strip in a high temperature state, a welding machine that is installed following the chain unwinding machine and connects the leading and trailing coils, and then a built-in or A metal band characterized by consisting of a powder fluidized bed for recovering high-temperature metal (+F WJ8) in which a heat exchanger is arranged, and a pickling tank for pickling the gold 74 band placed after the fluidized bed. This is sensible heat recovery and pickling equipment.
(作用)
このような本発明設備では粉体流動層にて金属帯のm熱
回収を行うため、金属帯の洗詐が不要であり、このため
金工4tFは流動層通過後直ちに酸洗槽へ高温状態を維
持したまま送給することになる。(Function) In the equipment of the present invention, the heat of the metal strip is recovered in the powder fluidized bed, so there is no need to wash the metal strip. Therefore, the metalwork 4tF is transferred to the pickling tank immediately after passing through the fluidized bed. It will be fed while maintaining the high temperature state.
(実施例) 以下本発明を図面に示す実施例に基づいて説明する。(Example) The present invention will be described below based on embodiments shown in the drawings.
第1図において、lは熱間圧延された高温の金属イ1)
コイルてあり、2は該コイルlを装架して巻戻すための
巻戻し機てあり、鎖巻戻し機2により金属帯はラインに
供給される。3は鎖巻戻し機2に近接して設けられ金工
帯8に推力を付与するためのピンチロール、4は金属帯
8の形状を矯正するためのレベラー、5は送給されてく
る金属帯8を順次接続するビルトイン型の溶接機で、シ
ャーとフラッシュトリマーを内蔵している。6a、6b
、6cは後述する粉体流動層装置の前後、及び酸洗槽の
前部に配置したプライドルロールてあって、ライン中の
金工帯に張力を付与するものである。In Figure 1, l is a hot-rolled high-temperature metal 1)
There is a coil 1, and 2 is a rewinding machine for mounting and rewinding the coil 1, and the chain unwinding machine 2 supplies the metal strip to the line. Reference numeral 3 denotes a pinch roll which is provided close to the chain unwinding machine 2 and applies thrust to the metal band 8; 4 a leveler for correcting the shape of the metal band 8; and 5, a metal band 8 that is fed. This is a built-in type welding machine that sequentially connects the shear and flash trimmer. 6a, 6b
, 6c are priddle rolls placed before and after the powder fluidized bed device and at the front of the pickling tank, which will be described later, to apply tension to the metalworking band in the line.
7は粉体流動層装置てあり、導入された金属帯8か保有
している顕熱を回収するだめのものである。該粉体流動
層装置7においては、金工帯は複数のターンロールによ
って上昇・下降を繰り返して外壁にて区分された複数の
流動層を通過する。Reference numeral 7 denotes a powder fluidized bed device, which is used to recover the sensible heat held by the introduced metal band 8. In the powder fluidized bed apparatus 7, the metalworking strip is repeatedly raised and lowered by a plurality of turn rolls, and passes through a plurality of fluidized beds divided by outer walls.
さらに、IOはテンションレベラーてあって、金属帯8
に3〜5%程度の伸びを与え次の酸洗をより効果的に行
わせるもので、場合によっては省略することかできる。Furthermore, the IO is equipped with a tension leveler, and the metal band 8
This gives an elongation of about 3 to 5% to make the subsequent pickling more effective, and can be omitted in some cases.
IIは金属帯表面のスケールを除去するための酸洗槽、
12は酸洗槽入側のシールロール、13は酸洗槽出側の
酸液の水切りを行うリンガ−ロールである。また、 1
4は酸洗槽11に続き設置された洗浄槽てあり、全7.
1帯表面に付着した酸を洗い落す。15は洗浄槽出側の
リンガ−ロール、16は金工(1?の乾燥を行うドライ
ヤーである。II is a pickling tank for removing scale on the surface of the metal strip;
12 is a seal roll on the inlet side of the pickling tank, and 13 is a ringer roll for draining the acid solution on the outlet side of the pickling tank. Also, 1
4 is a cleaning tank installed following the pickling tank 11, and there are 7 in total.
1. Wash off the acid adhering to the surface of the belt. 15 is a ringer roll on the outlet side of the cleaning tank, and 16 is a dryer for drying metalwork (1?).
第2図は一個の流動槽構造を示すもので、流動層本体は
外壁17により縦長状に形成され、その下部ターンロー
ル18の上方水平方向に多数の孔を有する分散板19を
設け、上下部を流動化ガス循環ダクト20で連結し、該
ダクト2oの下端の流動層底部にブロワ21を介在設置
している。また、流動層内部の分散板19上には粉体(
例えば、粒径o、1〜0.4■φのアルミナ、スチール
、砂鉄)22を封入し、そこに蒸気発生器23を配置し
ておく。なお、蒸気発生器の代りにタクトに熱交換器を
設置してもよい。FIG. 2 shows the structure of one fluidized tank, in which the main body of the fluidized bed is formed into a vertically elongated shape by an outer wall 17, and a dispersion plate 19 having a large number of holes is provided horizontally above the lower turn roll 18. are connected by a fluidizing gas circulation duct 20, and a blower 21 is interposed and installed at the bottom of the fluidized bed at the lower end of the duct 2o. In addition, powder (
For example, alumina, steel, iron sand) 22 with a particle size o of 1 to 0.4 φ is sealed, and a steam generator 23 is placed therein. Note that a heat exchanger may be installed in the tact instead of the steam generator.
従って、ブロワ21にて流動化ガス(例えば空気)を2
〜3 kgf/c+n2の圧力て流動層下部より供給す
れば、分散板19上の粉体22は流動化状態となり、こ
こを通過する金属帯はこの粉体22及びガスに接触し、
その保有している顕熱かこれら粉体とガスに移行せしめ
られる。そしてこの移行した熱は蒸気発生器23内の水
を加熱し、蒸気として回収される。Therefore, the blower 21 blows 2 fluidizing gases (for example, air).
When a pressure of ~3 kgf/c+n2 is supplied from the bottom of the fluidized bed, the powder 22 on the dispersion plate 19 becomes fluidized, and the metal band passing through this comes into contact with the powder 22 and the gas.
The sensible heat it possesses is transferred to these powders and gases. This transferred heat then heats the water in the steam generator 23 and is recovered as steam.
上記の設備において、巻戻された金属帯8は粉体流動槽
7にてその保有する顕熱を回収され、次いて直ちに高温
のまま酸洗槽11に供給されてスケールを除去された後
、洗浄槽14て酸液な洗浄され、ドライヤー16にて乾
燥される。In the above-mentioned equipment, the unwound metal strip 8 recovers its sensible heat in the powder fluidization tank 7, and is then immediately supplied to the pickling tank 11 at high temperature to remove scale. It is washed with an acid solution in a cleaning tank 14 and dried in a dryer 16.
なお、また、図示の酸洗ラインの後にループカー、捲取
機を配置するか、又はループカーに続いて冷間圧延機更
には連続焼鈍炉を配置してもよい。Furthermore, a loop car and a winding machine may be disposed after the illustrated pickling line, or a cold rolling mill and further a continuous annealing furnace may be disposed following the loop car.
(発明の効果)
以上説明した本発明の顕熱回収・酸洗設備によれば、金
属帯の顕熱回収に粉体流動層を用いるため、従来の溶融
塩を使用する方式に見られた欠点を全て解消すると共に
、酸洗時の金属帯の昇温も不要となり、大幅な省エネル
ギを達成することかてきる。(Effects of the Invention) According to the sensible heat recovery/pickling equipment of the present invention as described above, a powder fluidized bed is used to recover sensible heat from the metal strip, which eliminates the drawbacks seen in the conventional method using molten salt. In addition to eliminating all problems, it also eliminates the need to raise the temperature of the metal band during pickling, resulting in significant energy savings.
第1図は本発明に係る酸洗設備の一例を示す全体配置図
、第2図は第1図における粉体流動層の具体例を示す構
造図である。
1・・・金属帯コイル、2・・・巻戻し機、3・・・ピ
ンチロール、4・・・レベラー、5・・・溶接機、6・
・・ブライドルロール、7・・・粉体流動層装置、8・
・・金属帯、lO・・・テンションレI\ラー、It・
・・酸洗槽、14・・・洗浄槽、16・・・ドライヤー
。FIG. 1 is an overall layout diagram showing an example of pickling equipment according to the present invention, and FIG. 2 is a structural diagram showing a specific example of the powder fluidized bed in FIG. 1. DESCRIPTION OF SYMBOLS 1... Metal band coil, 2... Rewinding machine, 3... Pinch roll, 4... Leveler, 5... Welding machine, 6...
... Bridle roll, 7... Powder fluidized bed device, 8.
・・Metal band, lO... tension layer I\ra, It・
...Pickling tank, 14...Cleaning tank, 16...Dryer.
Claims (1)
る巻戻し機と、該巻戻し機に続いて設置され先後行コイ
ルを接続する溶接機と、次いで蒸気発生管を内蔵或いは
熱交換器を配置した高温金属帯の顕熱回収用粉体流動層
と、該流動層の後位に配置した金属帯の酸洗を行う酸洗
槽とからなることを特徴とする金属帯の顕熱回収・酸洗
設備。An unwinding machine that unwinds the coiled metal strip after hot rolling in a high temperature state, a welding machine that is installed following the unwinding machine and connects the preceding and following coils, and then a built-in steam generation tube or a heat exchanger. Sensible heat of a metal band characterized by comprising a powder fluidized bed for recovering sensible heat of a high temperature metal band in which a container is arranged, and a pickling tank for pickling the metal band placed after the fluidized bed. Collection and pickling equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60292143A JPS62151590A (en) | 1985-12-26 | 1985-12-26 | Equipment for recovering sensible heat of metallic strip and pickling said strip |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60292143A JPS62151590A (en) | 1985-12-26 | 1985-12-26 | Equipment for recovering sensible heat of metallic strip and pickling said strip |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62151590A true JPS62151590A (en) | 1987-07-06 |
JPH0582480B2 JPH0582480B2 (en) | 1993-11-19 |
Family
ID=17778097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60292143A Granted JPS62151590A (en) | 1985-12-26 | 1985-12-26 | Equipment for recovering sensible heat of metallic strip and pickling said strip |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62151590A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103920710A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Production method of low-consumption corrosion-resistant cold-rolled product |
CN103920741A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Low-consumption method for producing products with corrosion resistance and high surface quality by replacing cold-rolling by hot-rolling |
CN103920737A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Method for eliminating oxide on surface of band steel of carbon steel |
-
1985
- 1985-12-26 JP JP60292143A patent/JPS62151590A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103920710A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Production method of low-consumption corrosion-resistant cold-rolled product |
CN103920741A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Low-consumption method for producing products with corrosion resistance and high surface quality by replacing cold-rolling by hot-rolling |
CN103920737A (en) * | 2014-03-27 | 2014-07-16 | 中冶南方工程技术有限公司 | Method for eliminating oxide on surface of band steel of carbon steel |
CN103920741B (en) * | 2014-03-27 | 2016-08-17 | 中冶南方工程技术有限公司 | A kind of anti-corrosion great surface quality of low consumption with heat for cold product processes |
Also Published As
Publication number | Publication date |
---|---|
JPH0582480B2 (en) | 1993-11-19 |
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