WO2013153791A1 - 焼鈍炉内雰囲気ガスの露点低減方法、その装置及び冷延焼鈍鋼板の製造方法 - Google Patents
焼鈍炉内雰囲気ガスの露点低減方法、その装置及び冷延焼鈍鋼板の製造方法 Download PDFInfo
- Publication number
- WO2013153791A1 WO2013153791A1 PCT/JP2013/002353 JP2013002353W WO2013153791A1 WO 2013153791 A1 WO2013153791 A1 WO 2013153791A1 JP 2013002353 W JP2013002353 W JP 2013002353W WO 2013153791 A1 WO2013153791 A1 WO 2013153791A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- dew point
- flow path
- zone
- heat exchanger
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/063—Special atmospheres, e.g. high pressure atmospheres
Definitions
- the present invention belongs to the field of advantageously producing a steel strip having a good plating adhesion (wetability) by reducing the dew point of atmospheric gas in a continuous annealing furnace, and in particular, a method for reducing the dew point of atmospheric gas in an annealing furnace
- the present invention relates to an apparatus and a method for producing a cold-rolled annealed steel sheet.
- Non-Patent Document 1 A method of distributing and supplying a new low dew point atmospheric gas from outside the furnace every heating zone or soaking zone (see Patent Document 1).
- B A method of exchanging heat between a high temperature atmospheric gas to be circulated and a low temperature dew point ambient gas supplied to the furnace separately by providing a mechanism for circulating the atmospheric gas inside the furnace (patented) Reference 2).
- C A method of exchanging heat between the high-temperature furnace atmosphere gas and the atmosphere gas after dew point reduction outside the furnace, and reducing the dew point with a moisture adsorption filter (see Patent Document 3).
- the temperature of the gas returned to the furnace does not rise, and as described in Patent Document 3, the dew point is lowered by a moisture adsorption filter having a low dehumidifying capacity, and the dew point is ⁇ 30 ° C. Since it is reduced only to a certain extent, the very low dew point of ⁇ 45 ° C. or lower as the object of the present application cannot be achieved. That is, the conventional technique for reducing the dew point in the continuous annealing furnace has a problem in that it cannot sufficiently achieve a dew point of ⁇ 45 ° C. or lower, and the energy efficiency is extremely poor. .
- a desiccant method or a compressor method such as a desiccant method or a compressor method that enables a dew point of ⁇ 45 ° C. or less to reduce the dew point of the annealing furnace atmosphere gas is provided.
- Newly reducing the dew point to -45 ° C, and also installing a heat exchanger in the circulation device to allow gas to rise in temperature and cool down, allowing gas to flow into the furnace heating zone and cooling zone By devising gas introduction), the inventors have conceived means for improving energy efficiency, and have made the present invention.
- the present invention is as follows. (1) A method for reducing the dew point of the atmosphere gas in a furnace in a continuous annealing furnace in which a metal strip is sequentially passed through a heating zone, a cooling zone, or sequentially passed through a heating zone, a soaking zone, and a cooling zone, and annealed in a reducing atmosphere, Providing a circulation device comprising a heat exchanger for exchanging heat between a low temperature gas and a high temperature gas, a gas cooling device for cooling the gas, and a dryer for dehumidifying the gas to a dew point of ⁇ 45 ° C.
- a step (c) of lowering the temperature by exchanging heat with the gas in the low temperature gas flow path through the high temperature gas flow path of the heat exchanger through the part of the atmospheric gas sucked out Next, a step (d) of further lowering the temperature by mixing a part of the lowered atmospheric gas with a part of the atmospheric gas sucked out from the cooling zone, Next, a step (e) of further cooling a part of the atmospheric gas mixed with a part of the atmospheric gas sucked out from the cooling zone and further lowered in temperature through the gas cooling device; Next, a step (f) of dehumidifying a part of the atmospheric gas further cooled through the gas cooling device to a dew point of ⁇ 45 ° C.
- the dehumidified part of the atmospheric gas is passed through the low-temperature gas flow path of the heat exchanger to raise the temperature by heat exchange with the gas in the high-temperature gas flow path (g),
- a method for reducing the dew point of the atmospheric gas in the annealing furnace including the step (h) of returning the part of the atmospheric gas whose temperature has been raised to the heating zone and / or the soaking zone.
- a dew point reducing device for atmospheric gas A gas flow path including a heat exchanger 9 for exchanging heat between a low temperature gas and a high temperature gas, a gas cooling device 10 for cooling the gas, a dryer 11 for dehumidifying the gas to a dew point of ⁇ 45 ° C.
- a gas mixer 20 Prepared, A gas flow path from the heating zone 1 and / or the soaking zone to the hot gas flow path of the heat exchanger 9 through the gas flow path 15 through the gas cooling device 10 to the dryer 11.
- Gas flow path 16 that flows from the dryer 11 into the low temperature gas flow path of the heat exchanger 9, and further returns from the heat exchanger 9 to the heating zone and / or the soaking zone,
- a dew point reducing apparatus for atmospheric gas in an annealing furnace comprising a gas flow path 19 connected in a gas mixer 20 to a gas flow path from the cooling zone 2 to the gas dryer 10 to the dryer 11.
- a gas flow path 17 for returning a part of the gas from the dryer 11 to the low temperature gas flow path of the heat exchanger 9 directly to the cooling zone without passing through the heat exchanger 9 via the gas distributor 13 is further provided.
- a method of manufacturing a cold-rolled annealed steel sheet that continuously anneals a cold-rolled steel strip A method for producing a cold-rolled annealed steel sheet, wherein the dew point of the atmospheric gas in the furnace in the continuous annealing furnace is reduced by the method of reducing the dew point of the atmospheric gas in the annealing furnace described in (1) or (2) during the continuous annealing.
- a part of the heating zone and / or the soaking tropic atmosphere gas is sucked out and passed through the high-temperature gas flow path of the heat exchanger to lower the temperature by heat exchange with the gas in the low-temperature gas flow path.
- the temperature is further lowered by mixing with part of the atmospheric gas in the cooling zone, then further cooled through the gas cooling device, then dehumidified to a dew point of ⁇ 45 ° C. or less with the dryer, and then the heat exchanger
- the temperature is increased by heat exchange with the gas in the high temperature gas flow path through the low temperature gas flow path, and then returned to the heating zone and / or the soaking zone, or more preferably, the heat exchange from the dryer.
- the inside of the annealing furnace can reach an extremely low dew point of ⁇ 45 ° C. or less, and When energy efficiency is greatly improved Achieve the cormorant effect.
- FIG. 2 is a schematic diagram showing a circulation system of Comparative Example 1.
- FIG. 2 is a schematic diagram showing a circulation system of Comparative Example 1.
- FIG. 2 is the schematic diagram showing the example 1 of this invention.
- FIG. 2 shows the schematic which shows the circulation system of the example 1 of this invention.
- Example 2 of this invention It is the schematic which shows the circulation system of the example 2 of this invention.
- the adhesion of the plating is greatly influenced by the dew point in the annealing furnace. It is known that this is due to the abundance of Mn oxide on the surface of the steel strip. If the dew point is around ⁇ 10 ° C., the Mn oxide is present inside the oxide film on the surface of the steel strip and is not present on the surface. If there is almost no dew point and the dew point is ⁇ 45 ° C. or less, almost no Mn oxide is formed. When the dew point in the middle is around ⁇ 35 ° C. ( ⁇ 15 ° C.
- a circulation device with a dryer capable of a dew point of -45 ° C or lower was newly installed in the annealing furnace. .
- the temperature of atmospheric gas hereinafter referred to as sucked gas
- introduction gas the temperature of atmospheric gas introduced from the circulation device into the furnace.
- the required atmospheric gas temperature differs depending on the heating zone, soaking zone, cooling zone, and the like.
- the sucked gas is cooled to about room temperature by the gas cooling device before entering the dryer, dehumidified by the dryer, and introduced again into the furnace. Since the high temperature necessary for annealing the steel strip cannot be maintained, it is required to raise the temperature of the gas introduced from the circulation device.
- the present inventors adopted a method of installing a heat exchanger between the furnace and the gas cooling device. That is, high-temperature gas (suction gas) sucked from the furnace heating zone and soaking zone is cooled by the cooling device before entering the dryer, so if the thermal energy due to this temperature difference is used, it is cooled by the gas cooling device. The temperature of the gas dehumidified by the dryer can be raised again, and the heating energy is the heat energy discarded by the gas cooling device, so that the energy can be effectively used.
- High-temperature gas sucked from the furnace heating zone and soaking zone is passed through a heat exchanger, then cooled with a gas cooling device, dehumidified with a dryer, heated again with a heat exchanger, and heated again with a furnace.
- the temperature of the gas after heat exchange of the high-temperature gas sucked from the heating zone or soaking zone may be higher than the gas temperature of the cooling zone, the low temperature sucked from the cooling zone to the gas after the heat exchange It is advantageous that the energy for further cooling in the subsequent gas cooling apparatus can be reduced by mixing these gases. Furthermore, since the gas temperature after cooling by the gas cooling device is lower than the temperature of the cooling zone of the furnace, a part of the gas cooled by the gas cooling device and dehumidified by the dryer is directly returned to the cooling zone without passing through the heat exchanger. Since the cooling zone can be made at a lower temperature and a lower dew point, energy efficiency is further improved.
- the dryer used in the present invention is made of activated alumina presented in Patent Document 3, and is not a low dehumidifying ability such as a moisture adsorption filter that is alternately operated and stopped, but is not calcium oxide, zeolite, silica gel, chloride Those having a strong dehumidifying ability such as a desiccant system that continuously dehumidifies using calcium or a compressor system that uses alternative chlorofluorocarbon are better.
- FIG. 1 to FIG. 11 show apparatus configurations and gas flow paths of the present invention example, comparative example, and conventional example, taking a continuous annealing furnace composed of a heating zone and a cooling zone as an example.
- FIG. 1 shows a conventional example 1 described in Patent Document 1, in which new low-temperature atmospheric gas is supplied as it is from the atmospheric gas supply facility 12 to the heating zone 1 and the cooling zone 2.
- 2 and FIG. 3 show a conventional example 2 described in Patent Document 2, in which the gas sucked out from the cooling zone 2 is put into the circulation device 8 from the flow path 15, passed through the heat exchanger 9, and from the atmospheric gas supply facility 12. The gas is heated and returned from the flow path 16 to the cooling zone 2.
- a new low-temperature atmospheric gas separately supplied from the gas supply facility 12 is heated by the heat exchanger 9 and introduced into the heating zone 1 from the atmospheric gas pipe 7.
- FIGS. 4 and 5 show a conventional example 3 described in Patent Document 3, in which gas sucked from the heating zone 1 is put into the circulation device 8 from the flow path 15, passed through the heat exchanger 9, and sucked from the heating zone 1. Is cooled with the gas from the moisture adsorption filter 18, dehumidified with the moisture adsorption filter 18 made of activated alumina, heated again through the heat exchanger 9, and returned from the flow path 16 to the heating zone 1. Two moisture adsorption filters 18 were prepared for each device, and were alternately operated and stopped every 3 hours.
- FIG. 6 and 7 show a comparative example 1, in which the gas sucked out from the heating zone 1 is put into the circulation device 8 through the flow path 15, passed through the heat exchanger 9, cooled with the gas dehumidified by the dryer 11, and gas cooling After further cooling with the apparatus 10, the moisture is dehumidified with the dryer 11, and is again passed through the heat exchanger 9 to be heated with the gas from the heating zone 1 and returned from the flow path 16 to the heating zone 1.
- FIGS. 8 and 9 show Example 1 of the present invention, corresponding to the means (1) and (3) for solving the problem, the gas sucked from the heating zone 1 is put into the circulation device 8 from the flow path 15 and heated. It is cooled with the dehumidified gas from the dryer through the exchanger 9, mixed with the gas separately sucked from the cooling zone 2 through the flow path 19 in the mixer 20, further cooled with the cooling device 10, and then dehumidified with the dryer 11. Then, the gas from the heating zone 1 is heated again and returned from the flow path 16 to the heating zone 1.
- FIGS. 10 and 11 show Example 2 of the present invention, which corresponds to the means (2) and (4) for solving the problem.
- the gas is distributed by the gas distributor 13, one of the distributed gases is passed through the heat exchanger 9, heated by the gas from the heating zone 1, returned from the flow path 16 to the heating zone 1, and the other distributed gas Is directly returned from the flow path 17 to the cooling zone 2.
- Table 1 shows the dew point of the sucked gas, the dew point of the introduced gas, and the energy exhausted in the meantime when the conditions of these sucked gas and introduced gas are changed in various ways according to the gas flow paths of the present invention example and the conventional example. It was shown to. According to this table, No. 1 to No. 3 as Invention Example 1 and No. 4 to No. 6 as Invention Example 2 are annealing furnaces as compared with No. 7 to No. 10 as conventional examples. The dew point of the gas to be introduced into the furnace is good at a value lower than the target of ⁇ 45 ° C., and the dew point in the furnace 21 before the outlet side of the annealing furnace is also lower than ⁇ 45 ° C., and the waste heat energy is small. It can be seen that the energy efficiency is remarkably good.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
一方、連続焼鈍炉内雰囲気ガスの露点低減方法に関する従来技術として、以下のものが挙げられる。
A:加熱帯(heating zone)又は均熱帯(soaking zone)毎に炉外からの新たな低露点の雰囲気ガスを分配して供給する方法(特許文献1参照)。
B:炉内の雰囲気ガスを炉外で循環させる機構を設けることで、循環させる高温の雰囲気ガスと別途新しく炉内へ供給する室温の低露点の雰囲気ガスとの間で熱交換させる方法(特許文献2参照)。
C:高温の炉内雰囲気ガスと炉外で露点低減後の雰囲気ガスを熱交換させ、かつ水分吸着フィルターで露点を低減する方法(特許文献3参照)。
また、前記従来技術Bでは、別途新たに供給する低温のガスの露点が低くても、多量にある炉内の露点が高い雰囲気ガスに混合されるだけであり、炉内の雰囲気ガスの露点低減が充分できない。
(1)
金属帯板を加熱帯、冷却帯に順次通し、或いは加熱帯、均熱帯、冷却帯に順次通して還元雰囲気中で焼鈍する連続焼鈍炉における炉内雰囲気ガスの露点低減方法であって、
低温ガスと高温ガスを熱交換させる熱交換器と、ガスを冷却するガス冷却装置と、ガスを-45℃以下の露点まで除湿するドライヤーとを備える循環装置を準備するステップ(a)と、
前記加熱帯及び/又は前記均熱帯の雰囲気ガスの一部を吸い出すステップ(b)と、
次いで前記吸い出した一部の雰囲気ガスを前記熱交換器の高温ガス流路に通して低温ガス流路内のガスとの熱交換により降温するステップ(c)と、
次いで前記降温された一部の雰囲気ガスを前記冷却帯から吸い出した雰囲気ガスの一部と混合してさらに降温するステップ(d)と、
次いで前記冷却帯から吸い出した雰囲気ガスの一部と混合してさらに降温された一部の雰囲気ガスを前記ガス冷却装置に通してさらに冷却するステップ(e)と、
次いで前記ガス冷却装置に通してさらに降温された一部の雰囲気ガスを前記ドライヤーで-45℃以下の露点まで除湿するステップ(f)と、
次いで前記除湿された一部の雰囲気ガスを前記熱交換器の低温ガス流路に通して前記高温ガス流路内のガスとの熱交換で昇温するステップ(g)と、
次いで前記昇温された一部の雰囲気ガスを前記加熱帯及び/又は前記均熱帯へ戻すステップ(h)とを含む焼鈍炉内雰囲気ガスの露点低減方法。
(2)
前記ドライヤーから前記熱交換器の低温ガス流路へ向かうガスの一部を前記熱交換器を通さず直接前記冷却帯へ戻す(1)に記載の焼鈍炉内雰囲気ガスの露点低減方法。
(3)
金属帯板を加熱帯1、冷却帯2に順次通し、或いは加熱帯、均熱帯、冷却帯に順次通して還元雰囲気中で焼鈍する連続焼鈍炉における炉内雰囲気ガスの露点を低減する焼鈍炉内雰囲気ガスの露点低減装置であって、
低温ガスと高温ガスを熱交換させる熱交換器9と、ガスを冷却するガス冷却装置10と、ガスを-45℃以下の露点まで除湿するドライヤー11と、ガス混合器20を含むガス流路を備え、
前記加熱帯1及び/又は前記均熱帯からガス流路15を経て前記熱交換器9の高温ガス流路に流入し、前記ガス冷却装置10を通じ、前記ドライヤー11に至るガス流路と、
前記ドライヤー11から、前記熱交換器9の低温ガス流路に流入し、さらに前記熱交換器9から前記加熱帯及び/又は前記均熱帯へ戻すガス流路16と、
前記冷却帯2から、前記ガス冷却装置10から前記ドライヤー11に至るガス流路に、ガス混合器20において接続するガス流路19とを備える焼鈍炉内雰囲気ガスの露点低減装置。
(4)
前記ドライヤー11から前記熱交換器9の低温ガス流路へ向かうガスの一部を、ガス分配器13を経て前記熱交換器9を通さず直接前記冷却帯に戻すガス流路17を、さらに備える(3)に記載の焼鈍炉内雰囲気ガスの露点低減装置。
(5)
冷間圧延鋼帯を連続焼鈍する冷延焼鈍鋼板の製造方法であって、
前記連続焼鈍中に、(1)又は(2)に記載の焼鈍炉内雰囲気ガスの露点低減方法によって、前記連続焼鈍炉における炉内雰囲気ガスの露点を低減する冷延焼鈍鋼板の製造方法。
さらに、炉の冷却帯の温度よりもガス冷却装置による冷却後のガス温度が低いため、ガス冷却装置で冷却されドライヤーで除湿されたガスの一部を熱交換器を通さず直接冷却帯に戻すと、冷却帯をより低温かつ低露点にできるため、エネルギー効率がさらに良くなる。
図1は特許文献1に記載の従来例1であり、雰囲気ガス供給設備12から加熱帯1及び冷却帯2へ新たな低温の雰囲気ガスをそのまま供給する。
図2及び図3は、特許文献2に記載の従来例2であり、冷却帯2から吸い出したガスを流路15から循環装置8に入れ、熱交換器9に通して雰囲気ガス供給設備12からのガスを加熱し、流路16から冷却帯2へ戻す。また、ガス供給設備12からの別途供給される新たな低温の雰囲気ガスは熱交換器9により加熱され、雰囲気ガス配管7から加熱帯1へ導入される。
2 冷却帯
3 鋼帯
4 ロール
5 吸出口
6 導入口
7 雰囲気ガス配管
8 循環装置
9 熱交換器
10 ガス冷却装置
11 ドライヤー(脱湿装置)
12 新たな雰囲気ガス供給設備
13 ガス分配器
15 加熱帯からのガスの流路
16 加熱帯へ戻すガスの流路
17 冷却帯へ戻すガスの流路
18 水分吸着フィルタ
19 冷却帯からのガスの流路
20 ガス混合器
21 焼鈍炉出側
Claims (5)
- 金属帯板を加熱帯、冷却帯に順次通し、或いは加熱帯、均熱帯、冷却帯に順次通して還元雰囲気中で焼鈍する連続焼鈍炉における炉内雰囲気ガスの露点低減方法であって、
低温ガスと高温ガスを熱交換させる熱交換器と、ガスを冷却するガス冷却装置と、ガスを-45℃以下の露点まで除湿するドライヤーとを備える循環装置を準備するステップ(a)と、
前記加熱帯及び/又は前記均熱帯の雰囲気ガスの一部を吸い出すステップ(b)と、
次いで前記吸い出した一部の雰囲気ガスを前記熱交換器の高温ガス流路に通して低温ガス流路内のガスとの熱交換により降温するステップ(c)と、
次いで前記降温された一部の雰囲気ガスを前記冷却帯から吸い出した雰囲気ガスの一部と混合してさらに降温するステップ(d)と、
次いで前記冷却帯から吸い出した雰囲気ガスの一部と混合してさらに降温された一部の雰囲気ガスを前記ガス冷却装置に通してさらに冷却するステップ(e)と、
次いで前記ガス冷却装置に通してさらに降温された一部の雰囲気ガスを前記ドライヤーで-45℃以下の露点まで除湿するステップ(f)と、
次いで前記除湿された一部の雰囲気ガスを前記熱交換器の低温ガス流路に通して前記高温ガス流路内のガスとの熱交換で昇温するステップ(g)と、
次いで前記昇温された一部の雰囲気ガスを前記加熱帯及び/又は前記均熱帯へ戻すステップ(h)とを含む焼鈍炉内雰囲気ガスの露点低減方法。 - 前記ドライヤーから前記熱交換器の低温ガス流路へ向かうガスの一部を前記熱交換器を通さず直接前記冷却帯へ戻す請求項1に記載の焼鈍炉内雰囲気ガスの露点低減方法。
- 金属帯板を加熱帯1、冷却帯2に順次通し、或いは加熱帯、均熱帯、冷却帯に順次通して還元雰囲気中で焼鈍する連続焼鈍炉における炉内雰囲気ガスの露点を低減する焼鈍炉内雰囲気ガスの露点低減装置であって、
低温ガスと高温ガスを熱交換させる熱交換器9と、ガスを冷却するガス冷却装置10と、ガスを-45℃以下の露点まで除湿するドライヤー11と、ガス混合器20を含むガス流路を備え、
前記加熱帯1及び/又は前記均熱帯からガス流路15を経て前記熱交換器9の高温ガス流路に流入し、前記ガス冷却装置10を通じ、前記ドライヤー11に至るガス流路と、
前記ドライヤー11から、前記熱交換器9の低温ガス流路に流入し、さらに前記熱交換器9から前記加熱帯及び/又は前記均熱帯へ戻すガス流路16と、
前記冷却帯2から、前記ガス冷却装置10から前記ドライヤー11に至るガス流路に、ガス混合器20において接続するガス流路19とを備える焼鈍炉内雰囲気ガスの露点低減装置。 - 前記ドライヤー11から前記熱交換器9の低温ガス流路へ向かうガスの一部を、ガス分配器13を経て前記熱交換器9を通さず直接前記冷却帯に戻すガス流路17を、さらに備える請求項3に記載の焼鈍炉内雰囲気ガスの露点低減装置。
- 冷間圧延鋼帯を連続焼鈍する冷延焼鈍鋼板の製造方法であって、
前記連続焼鈍中に、請求項1又は2に記載の焼鈍炉内雰囲気ガスの露点低減方法によって、前記連続焼鈍炉における炉内雰囲気ガスの露点を低減する冷延焼鈍鋼板の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013534870A JP5742950B2 (ja) | 2012-04-09 | 2013-04-05 | 焼鈍炉内雰囲気ガスの露点低減方法、その装置及び冷延焼鈍鋼板の製造方法 |
CN201380019100.2A CN104245972B (zh) | 2012-04-09 | 2013-04-05 | 退火炉炉内气氛气体的露点降低方法、其装置及冷轧退火钢板的制造方法 |
KR1020147029899A KR101564870B1 (ko) | 2012-04-09 | 2013-04-05 | 어닐링로 내 분위기 가스의 노점 저감 방법, 그 장치 및 냉연 어닐링 강판의 제조 방법 |
EP13776255.5A EP2837700B1 (en) | 2012-04-09 | 2013-04-05 | Method for lowering dew point of atmosphere gas within annealing furnace, device thereof, and method for producing cold-rolled annealed steel sheet |
US14/391,022 US20150114528A1 (en) | 2012-04-09 | 2013-04-05 | Method of lowering dew point of amibient gas within annealing furnace, device thereof, and method of producing cold-rolled annealed steel sheet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-088089 | 2012-04-09 | ||
JP2012088089 | 2012-04-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013153791A1 true WO2013153791A1 (ja) | 2013-10-17 |
Family
ID=49327376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/002353 WO2013153791A1 (ja) | 2012-04-09 | 2013-04-05 | 焼鈍炉内雰囲気ガスの露点低減方法、その装置及び冷延焼鈍鋼板の製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150114528A1 (ja) |
EP (1) | EP2837700B1 (ja) |
JP (1) | JP5742950B2 (ja) |
KR (1) | KR101564870B1 (ja) |
CN (1) | CN104245972B (ja) |
WO (1) | WO2013153791A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105018714A (zh) * | 2014-04-17 | 2015-11-04 | 宝山钢铁股份有限公司 | 连续退火炉内气氛增湿方法 |
WO2016152018A1 (ja) * | 2015-03-23 | 2016-09-29 | Jfeスチール株式会社 | 連続溶融亜鉛めっき装置及び溶融亜鉛めっき鋼板の製造方法 |
JP7402372B1 (ja) | 2023-06-06 | 2023-12-20 | 日本碍子株式会社 | 熱処理炉 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101564869B1 (ko) * | 2012-04-09 | 2015-10-30 | 제이에프이 스틸 가부시키가이샤 | 어닐링로 내 분위기 가스의 노점 저감 방법, 그 장치 및 냉연 어닐링 강판의 제조 방법 |
US10233526B2 (en) * | 2012-12-04 | 2019-03-19 | Jfe Steel Corporation | Facility having a continuous annealing furnace and a galvanization bath and method for continuously manufacturing hot-dip galvanized steel sheet |
CN109990569B (zh) * | 2019-04-09 | 2020-08-11 | 中冶赛迪工程技术股份有限公司 | 一种基于降温除湿的退火炉烘干方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62290830A (ja) | 1986-06-11 | 1987-12-17 | Nisshin Steel Co Ltd | 鋼帯の連続焼鈍方法および同焼鈍炉 |
JPH02236229A (ja) * | 1989-03-08 | 1990-09-19 | Kawasaki Steel Corp | ステンレス鋼帯の竪型連続光輝焼鈍炉における雰囲気ガス制御方法 |
JPH0347923A (ja) * | 1989-04-05 | 1991-02-28 | Nippon Yakin Kogyo Co Ltd | 光輝焼鈍炉 |
JPH10176225A (ja) * | 1996-12-13 | 1998-06-30 | Daido Steel Co Ltd | 金属ストリップの連続焼鈍炉 |
JPH11124622A (ja) | 1997-10-21 | 1999-05-11 | Daido Steel Co Ltd | 熱処理方法 |
JP2000104123A (ja) * | 1998-07-28 | 2000-04-11 | Kawasaki Steel Corp | 焼鈍金属板およびその製造方法ならびに箱焼鈍炉 |
JP2002003953A (ja) | 2000-06-20 | 2002-01-09 | Sumitomo Metal Ind Ltd | 連続焼鈍炉内への雰囲気ガス供給方法と装置 |
WO2012081719A1 (ja) * | 2010-12-17 | 2012-06-21 | Jfeスチール株式会社 | 鋼帯の連続焼鈍方法、及び、溶融亜鉛めっき方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1959713C2 (de) * | 1969-11-28 | 1975-11-27 | Fa. J. Aichelin, 7015 Korntal | Verfahren zur reinigung der schutzgasatmosphaere eines industrieofens und zur durchfuehrung dieses verfahrens eingerichteter durchlaufindustrieofen |
TW436526B (en) * | 1998-07-28 | 2001-05-28 | Kawasaki Steel Co | Box annealing furnace, method for annealing metal sheet using the same, and annealed metal sheet |
DE102009006384A1 (de) * | 2009-01-28 | 2010-08-19 | Uhde Gmbh | Verfahren zur Versorgung eines Flugstromvergasungsreaktors mit Brennstoff aus einem Vorratsbehälter |
CN201660671U (zh) * | 2010-04-21 | 2010-12-01 | 山西太钢不锈钢股份有限公司 | 降低退火炉氢气露点的装置 |
KR101564869B1 (ko) * | 2012-04-09 | 2015-10-30 | 제이에프이 스틸 가부시키가이샤 | 어닐링로 내 분위기 가스의 노점 저감 방법, 그 장치 및 냉연 어닐링 강판의 제조 방법 |
-
2013
- 2013-04-05 CN CN201380019100.2A patent/CN104245972B/zh active Active
- 2013-04-05 EP EP13776255.5A patent/EP2837700B1/en active Active
- 2013-04-05 JP JP2013534870A patent/JP5742950B2/ja active Active
- 2013-04-05 KR KR1020147029899A patent/KR101564870B1/ko active IP Right Grant
- 2013-04-05 US US14/391,022 patent/US20150114528A1/en not_active Abandoned
- 2013-04-05 WO PCT/JP2013/002353 patent/WO2013153791A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62290830A (ja) | 1986-06-11 | 1987-12-17 | Nisshin Steel Co Ltd | 鋼帯の連続焼鈍方法および同焼鈍炉 |
JPH02236229A (ja) * | 1989-03-08 | 1990-09-19 | Kawasaki Steel Corp | ステンレス鋼帯の竪型連続光輝焼鈍炉における雰囲気ガス制御方法 |
JPH0347923A (ja) * | 1989-04-05 | 1991-02-28 | Nippon Yakin Kogyo Co Ltd | 光輝焼鈍炉 |
JPH10176225A (ja) * | 1996-12-13 | 1998-06-30 | Daido Steel Co Ltd | 金属ストリップの連続焼鈍炉 |
JPH11124622A (ja) | 1997-10-21 | 1999-05-11 | Daido Steel Co Ltd | 熱処理方法 |
JP2000104123A (ja) * | 1998-07-28 | 2000-04-11 | Kawasaki Steel Corp | 焼鈍金属板およびその製造方法ならびに箱焼鈍炉 |
JP2002003953A (ja) | 2000-06-20 | 2002-01-09 | Sumitomo Metal Ind Ltd | 連続焼鈍炉内への雰囲気ガス供給方法と装置 |
WO2012081719A1 (ja) * | 2010-12-17 | 2012-06-21 | Jfeスチール株式会社 | 鋼帯の連続焼鈍方法、及び、溶融亜鉛めっき方法 |
Non-Patent Citations (1)
Title |
---|
BULLETIN OF THE IRON AND STEEL INSTITUTE OF JAPAN, vol. 96-1, 2010, pages 11 - 20 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105018714A (zh) * | 2014-04-17 | 2015-11-04 | 宝山钢铁股份有限公司 | 连续退火炉内气氛增湿方法 |
WO2016152018A1 (ja) * | 2015-03-23 | 2016-09-29 | Jfeスチール株式会社 | 連続溶融亜鉛めっき装置及び溶融亜鉛めっき鋼板の製造方法 |
JP2016180137A (ja) * | 2015-03-23 | 2016-10-13 | Jfeスチール株式会社 | 連続溶融亜鉛めっき装置及び溶融亜鉛めっき鋼板の製造方法 |
JP7402372B1 (ja) | 2023-06-06 | 2023-12-20 | 日本碍子株式会社 | 熱処理炉 |
Also Published As
Publication number | Publication date |
---|---|
EP2837700A4 (en) | 2015-12-02 |
EP2837700A1 (en) | 2015-02-18 |
US20150114528A1 (en) | 2015-04-30 |
JP5742950B2 (ja) | 2015-07-01 |
JPWO2013153791A1 (ja) | 2015-12-17 |
CN104245972A (zh) | 2014-12-24 |
CN104245972B (zh) | 2016-03-16 |
KR20140139590A (ko) | 2014-12-05 |
KR101564870B1 (ko) | 2015-10-30 |
EP2837700B1 (en) | 2019-06-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5742950B2 (ja) | 焼鈍炉内雰囲気ガスの露点低減方法、その装置及び冷延焼鈍鋼板の製造方法 | |
JP5243900B2 (ja) | 溶剤回収設備 | |
JP2017524807A (ja) | 酸洗いフリー連続焼鈍炉還元ガス循環再生利用系統およびその利用方法 | |
JP5874818B2 (ja) | 焼鈍炉内雰囲気ガスの露点低減方法、その装置及び冷延焼鈍鋼板の製造方法 | |
WO2014087452A1 (ja) | 連続溶融亜鉛めっき鋼板の製造設備及び製造方法 | |
CN109922893B (zh) | 涂装用干燥设备 | |
WO2014115190A1 (ja) | 連続熱処理炉の炉内雰囲気調整方法 | |
JP5500053B2 (ja) | 連続焼鈍炉の炉内雰囲気調整方法 | |
CN110180324B (zh) | 一种空气净化装置及净化方法 | |
JP5274417B2 (ja) | 電着塗装設備 | |
JP5733121B2 (ja) | 連続熱処理炉の炉内雰囲気調整方法 | |
KR100885709B1 (ko) | 기판 제조 설비용 항온항습장치 및 방법 | |
JP5884171B2 (ja) | 連続焼鈍炉内における炉内雰囲気改善方法 | |
JP2010071543A (ja) | 空調システムおよび方法 | |
JP2019066155A (ja) | デシカントロータを用いた外気処理機及び外気処理方法 | |
JP2007268393A (ja) | 塗装室用除湿及び有機溶剤処理システム | |
JP5850430B2 (ja) | 溶剤回収設備 | |
CN114018043A (zh) | 一种真空热处理炉 | |
TH137137A (ja) | ||
TH64533B (ja) | ||
TH66335B (ja) | ||
TH137138A (ja) | ||
KR20110057320A (ko) | 증기가습이 필요 없는 에너지 절약형 외기공조장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201380019100.2 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 2013534870 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13776255 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14391022 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20147029899 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013776255 Country of ref document: EP |