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公开(公告)号：US5680413A
公开(公告)日：1997-10-21
申请号：US543758
申请日：1995-10-16
Applicant: Masaki Ogushi , Osamu Takeuchi , Ikuo Yamamura , Toru Iura , Hironobu Yoshida
Inventor： Masaki Ogushi , Osamu Takeuchi , Ikuo Yamamura , Toru Iura , Hironobu Yoshida
IPC: C21B13/12 , C21C5/52 , C21C5/56 , F27B3/08 , F27B3/18 , F27B3/20 , F27B3/22 , F27B3/28 , F27D13/00 , F27D19/00
CPC classification number: C21C5/5229 , C21B13/12 , C21C5/5217 , C21C5/527 , C21C5/565 , F27B3/186 , F27B3/20 , F27B3/205 , F27B3/225 , F27B3/28 , F27D13/002 , F27D19/00 , F27D2019/0021 , F27D2019/0068 , Y02P10/216
Abstract: An electric arc melting furnace includes a furnace shell (1) with an electrode (3) for melting scrap by heat of arc, an air blasting port (20) for blasting air, oxygen or oxygen-enriched air into the furnace shell (1) through an air control valve (19), a carbon blasted quantity indicator (CI) for measuring quantity of carbon to be charged into the furnace shell (1), a scrap charged quantity indicator (SI) for measuring quantity of the scrap charged into the furnace shell (1), an oxygen blasted quantity indicator (OI) for measuring quantity of oxygen blasted into the furnace shell (1) and an arithmetic processor (7) for computing quantity of air required for complete combustion of carbon monoxide (23) in the furnace shell (1) in response to measured value from the indicators (CI)(SI)(OI) to control a degree of opening of the air control valve (19). Air with quantity in proportion to the carbon monoxide (23) is blasted through the air blasting port (20), which enables control of combustion temperature in the furnace shell (1) and control of temperature in the scrap preheating device.
Abstract translation: 一种电弧熔炉包括：具有用于通过电弧熔化废料的电极（3）的炉壳（1），用于喷射空气的空气喷射口（20），进入炉壳（1）的氧气或富氧空气， 通过空气控制阀（19），用于测量装入炉壳（1）中的碳量的喷砂量指示器（CI），用于测量填充到炉壳（1）中的废料量的废料装料量指示器 炉壳（1），用于测量吹入炉壳（1）的氧气量的氧气喷射量指示器（OI）和用于计算一氧化碳（23）完全燃烧所需的空气量的算术处理器（7） 响应于来自指示器（CI）（SI）（OI）的测量值来控制空气调节阀（19）的打开程度的炉壳（1）。 通过喷气口（20）喷射与一氧化碳（23）成比例的量的空气，其能够控制炉壳（1）中的燃烧温度和废料预热装置中的温度控制。
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公开(公告)号：US4242532A
公开(公告)日：1980-12-30
申请号：US106204
申请日：1979-12-21
Applicant: John D. Squibbs
Inventor： John D. Squibbs
CPC classification number: F27D17/008 , F27D17/003 , F27D19/00 , F27D2019/0021 , F27D2019/0037
Abstract: A method for controlling exhaust gases emitted from a direct arc furnace melting furnace. Prior to cleaning the temperature of the gases is sensed and the arc power is regulated in response to the sensed exhaust gas temperature. Also, the cleaning process of the gases is changed depending upon the sensed gas temperature.
Abstract translation: 一种用于控制从直接电弧炉熔炉排出的废气的方法。 在清洁之前，检测到气体的温度，并响应于检测到的废气温度来调节电弧功率。 而且，气体的清洁过程根据检测到的气体温度而改变。
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公开(公告)号：US09689612B2
公开(公告)日：2017-06-27
申请号：US14721342
申请日：2015-05-26
Applicant: AIR PRODUCTS AND CHEMICALS, INC.
Inventor： Shailesh Pradeep Gangoli , J. Bruce Kenworthy , Russell James Hewertson , Anup Vasant Sane , Reed Jacob Hendershot , Xiaoyi He
IPC: F23C5/08 , F27B7/34 , F23L7/00 , F23N1/00 , F23N3/00 , F23N5/00 , F23N5/08 , F23N5/10 , F23N5/24 , F23C6/02 , F23G5/20 , F23D14/46 , F27B7/20 , F27B7/10 , F27B7/42 , F27D21/00 , F27D99/00 , F27D19/00
CPC classification number: F27B7/34 , F23C5/08 , F23C6/02 , F23C2201/20 , F23C2900/05081 , F23D14/46 , F23G5/20 , F23L7/007 , F23N1/002 , F23N3/002 , F23N5/003 , F23N5/08 , F23N5/10 , F23N5/24 , F23N5/242 , F27B7/10 , F27B7/20 , F27B7/42 , F27D21/0014 , F27D99/0033 , F27D2019/0006 , F27D2019/0021 , Y02E20/344
Abstract: A selective oxy-fuel burner for mounting in a charge door of a rotary furnace, including at least two burner elements each oriented to fire into different portions of the furnace, each burner element including a selective distribution nozzle configured to flow a first reactant; and a proportional distribution nozzle configured to flow a second reactant; at least one sensor to detect one or more process parameters related to furnace operation; and a controller programmed to independently control the first reactant flow to each selective distribution nozzle based on the detected process parameters such that at least one burner element is active and at least one burner element is passive; wherein the second reactant is substantially proportionally distributed to the proportional distribution nozzles; and wherein the first reactant is one of a fuel and an oxidant and wherein the second reactant is the other of a fuel and an oxidant.
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公开(公告)号：US08721764B2
公开(公告)日：2014-05-13
申请号：US13061428
申请日：2009-08-28
Applicant: Frank Rheker
Inventor： Frank Rheker
IPC: C22B21/00
CPC classification number: C22B21/00 , C21B13/006 , C21B13/023 , C21B13/085 , C21B2300/04 , C21C5/4673 , C21C2005/5288 , C22B7/003 , C22B21/0092 , F23N1/022 , F23N5/102 , F27B1/26 , F27B3/28 , F27B7/42 , F27D19/00 , F27D21/0028 , F27D2019/0021 , F27D2019/004 , F27D2019/0043 , Y02P10/216 , Y02P10/218 , Y02P40/126
Abstract: The invention relates to a method for operating a furnace, wherein a starting material comprising at least one metal element is molten, wherein the starting material is heated by at least one burner that is operated with a fuel volume flow of a fuel and an oxidant volume flow of an oxidant. An exhaust gas temperature of the furnace is monitored in an exhaust gas line at least at one measuring point downstream of a post combustion zone, wherein in a standard operational state a target fuel volume stream and a target oxidant volume stream is fed to the burner, wherein a change of the exhaust gas temperature is recorded at predetermined time frequencies and is compared to a predetermined threshold value. The invention is characterized in that when the change of the exhaust gas temperature per time unit is greater than the threshold value, the burner is put into a reduced operational state for a predetermined time, wherein the quotient of fuel volume stream to oxidant volume stream is lowered by at least one of the following actions: A) a predetermined sudden reduction of the fuel volume stream to a reduced volume stream and B) a predetermined sudden increase of the oxidant volume stream to an increased volume stream, said quotient being reset to the standard operating state after the reduction period.
Abstract translation: 本发明涉及一种操作炉子的方法，其中包括至少一种金属元素的起始材料是熔化的，其中起始材料被至少一个燃烧器加热，燃烧器的燃料体积流量和氧化剂体积 氧化剂的流动。 在排气管线中至少在后燃烧区域下游的一个测量点监测炉子的废气温度，其中在标准操作状态下，将目标燃料体积流和目标氧化剂体积流进料到燃烧器， 其中以预定时间频率记录废气温度的变化并将其与预定阈值进行比较。 本发明的特征在于，当每个时间单位的排气温度的变化大于阈值时，将燃烧器置于降低的操作状态一段预定的时间，其中燃料体积流与氧化剂体积流的商 降低以下动作中的至少一个：A）将燃料体积流预定的突然减小到减小的体积流，以及B）氧化剂体积流预定的突然增加到增加的体积流，所述商被重置为 缩减期后的标准运行状态。
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公开(公告)号：US07462218B2
公开(公告)日：2008-12-09
申请号：US10497454
申请日：2002-11-07
Applicant: Jean Ducrocq
Inventor： Jean Ducrocq
IPC: C22B21/00
CPC classification number: C22B21/0092 , C22B21/0069 , F27B3/28 , F27D21/02 , F27D25/008 , F27D2019/0015 , F27D2019/0021 , F27D2019/0034 , F27D2021/0078 , F27D2021/026 , F27D2099/0045 , G01N21/39 , G01N21/85 , Y02P10/218
Abstract: A process and a device for melting aluminum where solid aluminum is melted in a furnace to form aluminum melt pool. The temperature and carbon monoxide (CO) concentration of the flue gas generated in the melting process is detected and examined for variations. Using this variation information, it is determined if aluminum oxides have formed on the surface of the aluminum melt pool and if they have, the melting process is regulated accordingly.
Abstract translation: 一种用于熔化铝的方法和装置，其中固体铝在炉中熔化以形成铝熔池。 在熔化过程中产生的烟气的温度和一氧化碳（CO）浓度被检测并检查变化。 使用该变化信息，确定在铝熔池的表面上是否形成了氧化铝，并且如果它们具有，则相应地调节熔融过程。
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Patent Agency Ranking
公开(公告)号：US20170167727A1
公开(公告)日：2017-06-15
申请号：US15444726
申请日：2017-02-28
Applicant: NOVA Chemicals (International) S.A.
Inventor： Leslie Wilfred Benum , Eric Clavelle , Grazyna Petela , Randall E. Saunders , Mark Williamson
CPC classification number: F23N3/002 , F23N5/003 , F23N5/02 , F23N5/022 , F27D19/00 , F27D2019/0003 , F27D2019/0021 , F27D2019/0043
Abstract: The dry oxygen content in the exhaust of an industrial furnace may be controlled to 1% or less by determining one or more of: the temperature of: each or a group of one or more burner (flame); one or more section of the radiant walls adjacent (e.g., within 5 feet of the burner); the temperature gradient across the process coils; the combustion products of one or more burners; the mass flow rate or the volume flow rate of air to each burner (e.g., the pressure drop across the variable forced air apertureii) comparing the result to said target value; and iii) adjusting either a) the opening of the variable forced air aperture; or b) adjusting the mass flow rate or the volume flow rate of air from said one or more fans.
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公开(公告)号：US09618204B2
公开(公告)日：2017-04-11
申请号：US14012024
申请日：2013-08-28
Applicant: NOVA Chemicals (International) S.A.
Inventor： Leslie Wilfred Benum , Eric Clavelle , Grazyna Petela , Randall E Saunders , Mark Williamson
CPC classification number: F23N3/002 , F23N5/003 , F23N5/02 , F23N5/022 , F27D19/00 , F27D2019/0003 , F27D2019/0021 , F27D2019/0043
Abstract: The dry oxygen content in the exhaust of an industrial furnace may be controlled to 1% or less by determining one or more of: the temperature of: each or a group of one or more burner (flame); one or more section of the radiant walls adjacent (e.g., within 5 feet of the burner); the temperature gradient across the process coils; the combustion products of one or more burners; the mass flow rate or the volume flow rate of air to each burner (e.g., the pressure drop across the variable forced air aperture ii) comparing the result to said target value; and iii) adjusting either a) the opening of the variable forced air aperture; or b) adjusting the mass flow rate or the volume flow rate of air from said one or more fans.
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公开(公告)号：US5590150A
公开(公告)日：1996-12-31
申请号：US338545
申请日：1994-12-09
Applicant: Masaki Ogushi , Osamu Takeuchi , Ikuo Yamamura , Toru Iura , Hironobu Yoshida
Inventor： Masaki Ogushi , Osamu Takeuchi , Ikuo Yamamura , Toru Iura , Hironobu Yoshida
IPC: C21B13/12 , C21C5/52 , C21C5/56 , F27B3/08 , F27B3/18 , F27B3/20 , F27B3/22 , F27B3/28 , F27D13/00 , F27D19/00 , F27D17/00
CPC classification number: C21C5/5229 , C21B13/12 , C21C5/5217 , C21C5/527 , C21C5/565 , F27B3/186 , F27B3/20 , F27B3/205 , F27B3/225 , F27B3/28 , F27D13/002 , F27D19/00 , F27D2019/0021 , F27D2019/0068 , Y02P10/216
Abstract: An electric arc melting furnace comprises a furnace shell (1) with an electrode (3) for melting scrap by heat of arc, an air blasting port (20) for blasting air, oxygen or oxygen-enriched air into the furnace shell (1) through an air control valve (19), a carbon blasted quantity indicator (CI) for measuring quantity of carbon to be charged into the furnace shell (1), a scrap charged quantity indicator (SI) for measuring quantity of the scrap charged into the furnace shell (1), an oxygen blasted quantity indicator (OI) for measuring quantity of oxygen blasted into the furnace shell (1) and an arithmetic processor (7) for computing quantity of air required for complete combustion of carbon monoxide (23) in the furnace shell (1) in response to measured value from the indicators (CI)(SI)(OI) to control a degree of opening of the air control valve (19). Air with quantity in proportion to the carbon monoxide (23) is blasted through the air blasting port (20), which enables control of combustion temperature in the furnace shell (1) and control of temperature in the scrap preheating device.
Abstract translation: PCT No.PCT / JP94 / 00619 Sec。 371日期1994年12月9日第 102（e）1994年12月9日PCT PCT 1994年4月14日PCT公布。 公开号WO95 / 09336 日期1994年4月6日电弧熔炼炉包括：炉壳（1），具有用于通过电弧加热熔化废料的电极（3），用于将空气，氧气或富氧空气吹入的喷气口（20） 通过空气调节阀（19）的炉壳（1），用于测量装入炉壳（1）中的碳量的喷砂量指示器（CI），用于测量量 装入炉壳（1）中的废料，用于测量吹入炉壳（1）的氧量的氧气喷射量指示器（OI）和用于计算碳完全燃烧所需的空气量的运算处理器（7） 响应于来自指示器（CI）（SI）（OI）的测量值来控制空气调节阀（19）的打开程度，炉壳（1）中的一氧化物（23）。 通过喷气口（20）喷射与一氧化碳（23）成比例的量的空气，其能够控制炉壳（1）中的燃烧温度和废料预热装置中的温度控制。
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公开(公告)号：US4270898A
公开(公告)日：1981-06-02
申请号：US57728
申请日：1979-07-16
Applicant: Stephen B. Kelly
Inventor： Stephen B. Kelly
CPC classification number: F27D19/00 , F27D2009/0086 , F27D2019/0021 , F27D2019/0056 , F27D2099/0048
Abstract: A method for preventing fires and explosions and thus controlling excess temperature within a burn-off or reclamation furnace including a water injection nozzle within the furnace, an automatic valve assembly connected to a source of water under pressure to turn the water on and off, an input burner to heat contaminate materials, an afterburner to burn volatile gases given off by the contaminate materials as they are heated, a temperature sensor located in the discharge from the afterburner to actuate the automatic valve assembly open and closed responsive to the temperature of the discharge, the temperature of the discharge depending on the rate of emission of volatile gases from the contaminate material so that if a high emission rate causes a predetermined temperature to be exceeded the valve assembly opens and the water injection nozzle sprays water on the contaminate materials to cool them and decrease the emission rate until the valve assembly closes.
Abstract translation: 一种用于防止火灾和爆炸的方法，从而控制在包括炉内的注水喷嘴的烧坏或回收炉内的过度温度，在压力下连接到水源以打开和关闭水的自动阀组件， 输入燃烧器以加热污染材料，加燃料器，用于燃烧被污染物质被加热时释放出的挥发性气体，温度传感器位于从加力燃烧器排出的位置，以根据排放温度来启动自动阀组件打开和关闭 ，放电的温度取决于来自污染物质的挥发性气体的排放速率，使得如果高排放速率导致超过预定温度，则阀组件打开，并且喷水喷嘴将污染物质上的水喷射到冷却 并减少排放速率直到阀组件关闭。
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10.发明公开公开(公告)号：US20240271231A1
公开(公告)日：2024-08-15
申请号：US18268744
申请日：2021-11-17
Applicant: JFE STEEL CORPORATION
Inventor： Kazuhira ICHIKAWA , Tetsuya YAMAMOTO , Takeshi SATO , Yuki KAWASHIRI
CPC classification number: C21B5/006 , F27D19/00 , F27D2019/0021
Abstract: A supply heat amount estimating method for estimating an amount of heat supplied to pig iron in a blast furnace from an amount of heat supplied into the blast furnace and a rate of production of molten pig iron in the blast furnace, the supply heat amount estimating method includes: estimating a change in carried-out sensible heat by an in-furnace passing gas and a change in carried-in sensible heat supplied by a raw material preheated by the in-furnace passing gas and estimating the amount of heat supplied to the pig iron in the blast furnace in consideration of the estimated changes in the carried-out sensible heat and the carried-in sensible heat.
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