EP3201367A1 - Verfahren und vorrichtung zum bestimmen des zeitpunktes der zündung bei einem sauerstoffblasverfahren - Google Patents
Verfahren und vorrichtung zum bestimmen des zeitpunktes der zündung bei einem sauerstoffblasverfahrenInfo
- Publication number
- EP3201367A1 EP3201367A1 EP15750684.1A EP15750684A EP3201367A1 EP 3201367 A1 EP3201367 A1 EP 3201367A1 EP 15750684 A EP15750684 A EP 15750684A EP 3201367 A1 EP3201367 A1 EP 3201367A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxygen
- time
- exhaust gas
- determining
- ignition
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 113
- 239000001301 oxygen Substances 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 96
- 238000007664 blowing Methods 0.000 title claims abstract description 43
- 239000007789 gas Substances 0.000 claims description 81
- 238000011156 evaluation Methods 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract 5
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 12
- 230000005855 radiation Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 229910000805 Pig iron Inorganic materials 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 229910001338 liquidmetal Inorganic materials 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000004886 process control Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 238000009618 Bessemer process Methods 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4673—Measuring and sampling devices
-
- 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
- F27D19/00—Arrangements of controlling devices
-
- 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
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0014—Devices for monitoring temperature
Definitions
- the invention relates to a method for determining the time of ignition in the inflation process, in particular in the case of the LD process, in a converter in which the oxygen amount value and the exhaust gas temperature value are determined, and a corresponding device.
- the aim of steelmaking is to produce steel, ie iron alloys with low carbon content and desired properties such as hardness, rust resistance or ductility.
- the pig iron is refined with oxygen.
- the oxidation process which lowers the carbon content (the refining), provides enough heat in these processes to keep the steel liquid, so external heat input is not necessary in the converters.
- the blowing process can also be subdivided into inflation and bottom blowing processes. Bottom blowing techniques include the Bessemer process, which
- the best known inflation method is the LD method.
- the blowing time is between 10 and 20 minutes and is chosen so that the desired decarburization and the combustion of unwanted admixtures and the desired final temperature can be achieved.
- the finished steel will tapped into pans by tilting the converter vessel. First, the steel bath is tapped with a temperature of more than 1,600 ° C through the tap hole in a pan, then the slag is poured off over the converter edge.
- the converter may be mounted in a "doghouse" which has slidable gates and is designed to protect the environment from expulsion from the converter and to direct gas leakage between the converter manifold and the exhaust gas chimney into the chimney or to the secondary degas Lining is mainly used for hematite plates, certain zones are given a refractory lining or, in the case of the flexible ceiling, also plates made of heat-resistant steel.
- the combustion in the converter does not begin immediately with the beginning of the injection of oxygen, but is usually delayed by a few seconds up to 90 seconds, and then spontaneously use at an unpredictable time. Knowing the exact timing of ignition is very important because only from that point on oxygen will react in reaction with the melt, and the actual duration of this reaction will be critical to process control and steel quality, especially its carbon content. Together with other parameters, the time of ignition allows the blowing process to be controlled from beginning to end. Accurate knowledge of the timing of ignition can improve the quality of the steel and eliminate re-injection of oxygen (post-blowing) or re-carburizing (combined with renewed sulfur input).
- the repeatability of the blowing process is improved, which also has a positive effect on the further steps of the process chain, such as secondary metallurgy.
- Currently used methods are based on manual input or not completely reliable automated systems. So far, the time of ignition by the operator was determined by observing the converter and thus the timing of the Ignition manually entered into the process control. Heavy smoke and dust, however, affect the clear ignition detection by the operator, as well as inability or possible inattentiveness of the operator. However, this method is associated with a time delay between the actual time of ignition and the detection of the time of ignition of several seconds, often up to 30 seconds. However, such a time-delayed determination of the timing of the ignition is disadvantageous for the process management. In addition, the timing of the ignition in hindsight, not exactly, but only approximately determined.
- the thermal expansion in the head of the lance can also be used to determine the time of ignition (by means of strain gauges).
- strain gauges the time of ignition
- the operating personnel can directly see the reaction and detect the ignition timing.
- An open doghouse always carries an immense security risk.
- the ignition timing can be set manually by pressing a button.
- an installed camera allows the operator to track the reaction on a monitor.
- An automatic optical method is the connection of the camera recording with an evaluation system, which analyzes the image material and thus automatically passes the ignition point to the process model.
- the solutions with video camera have a high installation costs result, since the camera cooled accordingly and a non-pollutable opening so a clear view of the converter mouth must be guaranteed. From DE 10 2012 224 184 AI is known in the context of a
- Oxygen blowing process to detect several operating variables and to determine target sizes of the operation based on a linkage of the operating variables.
- operating variables including the exhaust gas composition, the exhaust gas temperature and the radiant power of the converter flame called.
- Target values are called a final carbon content, temperature and composition of the melt.
- Reaction gases of about about 1100 ° C, preferably about 1200 ° C, occurs and thus represents the time of ignition.
- the control current of the photocell triggers the measurement for the predetermined "metallurgical" amount of oxygen.
- a disadvantage of the method of AT 299283 B is that it provides only a single data value, which is often insufficient for the reliable igniter detection of the inflation process.
- the photocell could also be triggered by a single failure, such as a single spark close to the photocell, although the actual ignition of the oxygen has not yet taken place.
- CCD image sensor and received by the sensor measured radiation intensity determines a course of the radiation intensity over time and the time at which a predetermined radiation intensity or a predetermined increase in the radiation intensity is reached, as the time of ignition determines.
- a first object of the invention to provide a method which allows a reliable and redundant determination of the time of ignition.
- a second object is the specification of a device which is particularly suitable for
- Performing the method is suitable.
- an oxygen amount value for the amount of the inflated oxygen and an exhaust gas temperature value for the current exhaust gas temperature is determined in the produced by the oxygen blowing exhaust gases and that time at which a predetermined oxygen limit for the amount of oxygen and at the same time a predetermined exhaust gas temperature limit value in the exhaust gas is reached, is defined as the time of ignition.
- the object related to the device is achieved by the specification of a device for determining the time of ignition in an oxygen blowing method, in particular in the LD method, comprising a converter which is provided for injecting oxygen, wherein a determination of an oxygen amount value for the amount of is provided inflated oxygen and a determination of an exhaust gas temperature value for the current exhaust gas temperature is provided in the resulting by the oxygen blowing exhaust gases and the time at which a reaching a predetermined oxygen limit for the amount of oxygen and at the same time a predetermined exhaust gas temperature limit is effected in the exhaust gas is determined as the time of ignition.
- oxygen is blown onto the liquid metal melt.
- This cumulative, blown 0 2 amount is measured via, for example, a volumetric flow sensor and, for example, transmitted to a computer system together with the currently measured exhaust gas temperature value. It has been recognized that as soon as the ignition has occurred, an increase in the exhaust gas temperature value can be detected. Exceeds this value a preset limit value with the simultaneous presence of a certain inflated 0 2 amount, it can be concluded that an ignition. That is, by an AND operation of the 0 2 - and temperature condition, for example in the form 0 2 amount> 270 Nm3 and temperature> 500 ° C, resulting in a very robust and reproducible ignition condition, the relatively unreliable ignition detection by the operator makes obsolete.
- the invention By the invention, a reliable automatic ignition detection is possible.
- the invention also makes it possible to achieve the target values of the process model more precisely. Also, a reduction of Nachblasroutinen done and 0 2 , which is required in the blowing process can be saved. According to the invention, a generation of reproducible steel grades is now possible.
- a cost-effective implementation is possible if a 0 2 volumetric flow measurement already exists. The installation of such a measurement must be further cost-effectively retrofitted, if this is not available.
- a maximum utilization of crucible gas can be achieved, since this can be done reliably via the primary dedusting in the gasometer.
- the exhaust gas temperature value is detected at an exhaust gas chimney, in this case in particular at the vertical section of the exhaust gas chimney or at the section which is arranged in fluidic terms before the evaporative cooler inlet.
- the exhaust gas temperature value may be detected at an evaporative cooler inlet of an evaporative cooler.
- the oxygen amount value and the exhaust gas temperature value are determined continuously.
- the oxygen amount value and the exhaust gas temperature value may be determined continuously after the start of the inflation of the oxygen and / or during the inflation or during the inflation process.
- simplification in the method can be brought about by fewer measured values.
- other positions are conceivable.
- the oxygen amount value is determined by means of a volume flow sensor.
- the oxygen is injected by means of a lance in the converter, the lance is connected to an oxygen supply with valve.
- the determination of the oxygen quantity value is now preferably carried out by means of a volumetric flow sensor mounted in the region of the valve, in particular on the valve. There, a particularly simple determination of the oxygen amount value is possible.
- the oxygen limit amount value and / or the exhaust gas limit temperature value are preferably determined empirically. That that the
- Limits for signaling an ignition e.g. be determined empirically on the basis of a series of measurements. These can vary, for example, depending on the converter and converter content.
- the limit values can be stored in a database. These can also be updated at certain intervals.
- the currently measured exhaust gas temperature value and the oxygen amount value is transmitted to a computing unit.
- the arithmetic unit comprises an evaluation algorithm which compares at least the currently measured exhaust gas temperature value and the oxygen quantity value with the exhaust gas limit temperature value and oxygen limit quantity value.
- the evaluation algorithm is activated in the arithmetic unit only at the beginning of the oxygen blowing.
- the evaluation algorithm can be activated in the arithmetic unit only during the oxygen blowing.
- oxygen is blown onto the liquid metal melt.
- This cumulative, blown 0 2 quantity is measured, for example, via a volumetric flow sensor and transmitted to a computer system together with the currently measured exhaust gas temperature value.
- the evaluation algorithm runs on the computer system.
- the evaluation algorithm is now based on the following contexts: If the ignition has taken place, then an increase in the exhaust gas temperature value can be ascertained. If this value exceeds a preset limit value while a certain amount of inflated O 2 is present , ignition can be concluded.
- a feedback from the currently active process phase enables the evaluation to be actively activated.
- the evaluation algorithm may be inactive during charging, after-blowing, parting, etc., but active at the beginning of the blowing cycle.
- a monitoring of the relationship between a temperature increase and the oxygen amount value can be provided in the computing unit.
- HMI Human-Machine-Interface System
- Computer system in particular a computer system, also be monitored. If this relationship does not occur after a sufficiently long time, then a problem in the blowing process can be assumed. This alarm can be fed to an alarm system or displayed to operators using a user interface (HMI) or other mobile visualization device.
- HMI user interface
- a camera may be provided with a sensor containing a plurality of photodiodes, preferably with a CCD image sensor, wherein the camera is aligned with its optical axis on a gap between a converter mouth and a hood, and a computer for evaluating the images of the camera wherein the computer is programmed to determine a course of the radiation intensity over time on the basis of the radiation intensity recorded by the sensors.
- the inventive method and the device according to the invention a reliable automatic ignition detection is possible. Also, the accuracy of the triggering time can continue increase. Also, a more exact achievement of the target values of the underlying process model as well as a reduction of Nachblasroutinen is achievable.
- 0 2 which is required in the blowing process, saved.
- Reliable automatic ignition detection ensures the production of reproducible steel grades. This means that better set process models enable the production of better steel grades. Particularly advantageous is the reduction of the risk of explosion in the secondary dedusting detected by too late ignitions of the 0 2 -Blasvons. Also, a cost-effective implementation of the method or the device is possible because the 0 2 volume flow measurement is easy to install. A maximum use of crucible gas is possible because this reliable over a
- FIG. 1 shows a lateral sectional view of a converter with sensor according to the invention
- Fig. 1 the converter 1 is shown, in which there is to be refurbished insert, namely scrap and lumpy Pig iron 2 and liquid pig iron 3.
- the exhaust stack 4 is arranged. This can be subdivided into different sections and fluidly connected to an evaporator cooler 16.
- the raisable and lowerable lance 7 is inserted through the opening 8 of the exhaust stack 4 in the converter 1.
- the lance 7 descends from the position H 2 , in which the lance
- the reaction gases 10 rise from the converter 1, which consist mainly of carbon monoxide (CO).
- the exhaust hood 5 is then, as shown in Fig. 1, open so that so-called false air 11 flows through the gap between the hood 5 and converter 1 and its converter mouth.
- the carbon monoxide of the reaction gases 10 burns with air.
- the incipient combustion of the blast oxygen with the carbon from the pig iron produces white glowing flames or gases.
- Ignition signal automatically after a sufficiently long time generated, which is a greatly delayed signal compared to the actual ignition timing.
- the proposed method or device is based on the analysis of the oxygen amount value, ie the cumulative amount of blown O 2 , in conjunction with the exhaust gas temperature value located in the exhaust gas. These two parameters have a clear relationship, whereby a detonation detection is realized.
- an oxygen amount value 110 for the amount of inflated oxygen and an exhaust gas temperature value 20 for the current exhaust gas temperature in the exhaust gas produced by the oxygen blowing method are determined and the time at which a predetermined oxygen limit for the amount of oxygen and at the same time a predetermined exhaust gas temperature limit in the exhaust gas is reached, as the timing of the ignition sets.
- the oxygen amount value 110 which is also referred to below as the blown 0 2 amount 110, is measured, for example via a volumetric flow sensor and transmitted together with the currently measured exhaust gas temperature value 20 to a computer system 40.
- the evaluation system 30 runs on the computer system 40.
- the exhaust gas temperature value 20 can be displayed, for example, at
- Evaporative cooler inlet 15 are detected.
- the exhaust-gas temperature value 20 can also be detected at the exhaust-gas stack 4 (FIG. 1), in particular the section 14 of the exhaust-gas chimney 4 (FIG. 1), which is connected directly before the evaporative cooling-medium inlet 15 (FIG. 1). It can also be detected on the vertical section 17 (FIG. 1) of the exhaust gas chimney 4 (FIG. 1). At these points, the attachment of a temperature sensor 18 (FIG 1) is particularly simple.
- the oxygen amount value 110 and the exhaust gas temperature value 20 may be determined continuously or may also be determined continuously after the start of the inflation of the oxygen and / or during the inflation. Others too
- the evaluation algorithm 30 is now based on the following relationships: If the ignition has taken place, then an increase in the exhaust gas temperature value 20 can be ascertained. Exceeds this exhaust gas temperature value 20 a preset limit with the simultaneous presence of a certain inflated 0 2 amount 110, it can be concluded that an ignition.
- an AND combination of the O 2 and temperature conditions for example in the form of oxygen quantity> 270 Nm 3 AND exhaust gas temperature value> 500 ° C.
- the oxygen limit value to be determined in advance for the amount of oxygen and the exhaust gas temperature limit value to be determined in advance for signaling an ignition can be determined empirically on the basis of a series of measurements. These can vary, for example, depending on the converter. It can
- the evaluation can be actively switched as a function of this.
- the evaluation algorithm 30 may be inactive during charging, after-blowing, parting, etc., but active at the beginning of the blowing cycle. Since the relationship between the temperature increase and the amount of material Saustoff- is characteristic of the blowing process, this can also be monitored by the computer system 40. If this relationship does not occur after a sufficiently long time, then from a problem in the blowing process. This alarm may be supplied to an alarm system 60, or displayed to operators via a human-machine interface 70 or other mobile visualization device 80.
- the device according to the invention is particularly suitable for carrying out the method according to the invention.
- the "uncertainty factor human" in connection with the ignition detection can be eliminated, whereby a higher or more reproducible product quality results.
- the crucible driver no longer has to worry about the ignition detection or the process is simplified (saving a control element).
- the safety can be increased because the doghouse at the beginning of the blowing phase does not have to be open.
- HMI Human Interface System
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Endoscopes (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14186962.8A EP3002342A1 (de) | 2014-09-30 | 2014-09-30 | Verfahren und Vorrichtung zum Bestimmen des Zeitpunktes der Zündung bei einem Sauerstoffblasverfahren |
PCT/EP2015/068148 WO2016050399A1 (de) | 2014-09-30 | 2015-08-06 | Verfahren und vorrichtung zum bestimmen des zeitpunktes der zündung bei einem sauerstoffblasverfahren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3201367A1 true EP3201367A1 (de) | 2017-08-09 |
EP3201367B1 EP3201367B1 (de) | 2018-06-13 |
Family
ID=51625940
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14186962.8A Withdrawn EP3002342A1 (de) | 2014-09-30 | 2014-09-30 | Verfahren und Vorrichtung zum Bestimmen des Zeitpunktes der Zündung bei einem Sauerstoffblasverfahren |
EP15750684.1A Active EP3201367B1 (de) | 2014-09-30 | 2015-08-06 | Verfahren und vorrichtung zum bestimmen des zeitpunktes der zündung bei einem sauerstoffblasverfahren |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14186962.8A Withdrawn EP3002342A1 (de) | 2014-09-30 | 2014-09-30 | Verfahren und Vorrichtung zum Bestimmen des Zeitpunktes der Zündung bei einem Sauerstoffblasverfahren |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP3002342A1 (de) |
CN (1) | CN106795573B (de) |
BR (1) | BR112017006451B1 (de) |
WO (1) | WO2016050399A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110129513B (zh) * | 2019-05-05 | 2021-04-20 | 河钢股份有限公司承德分公司 | 预防电除尘器泄爆的方法 |
CN115491458B (zh) * | 2021-06-19 | 2024-02-02 | 上海梅山钢铁股份有限公司 | 一种转炉声波离散除垢单元运行时间设定方法 |
CN115232908B (zh) * | 2022-08-02 | 2024-06-14 | 广东韶钢松山股份有限公司 | 防止干法除尘泄爆的转炉炼钢方法 |
CN115491459A (zh) * | 2022-08-30 | 2022-12-20 | 石钢京诚装备技术有限公司 | 一种干法除尘转炉开吹氧气流量爬坡的方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT299283B (de) | 1969-04-08 | 1972-06-12 | Voest Ag | Verfahren zur Betriebsregelung von Sauerstoffaufblaseverfahren |
JPS57203715A (en) * | 1981-06-09 | 1982-12-14 | Kawasaki Steel Corp | Discriminating method of ignition in top-blown converter |
CA2541092A1 (en) * | 2006-03-28 | 2007-09-28 | Murray Thomson | Infrared light sensors for diagnosis and control of industrial furnace gases |
AT509866B1 (de) | 2010-06-02 | 2011-12-15 | Siemens Vai Metals Tech Gmbh | Verfahren zum bestimmen des zeitpunktes der zündung beim aufblasverfahren |
CN202074844U (zh) * | 2011-03-10 | 2011-12-14 | 中国恩菲工程技术有限公司 | 氧气顶吹熔炼炉的点火控制系统 |
DE102012224184A1 (de) * | 2012-12-21 | 2014-06-26 | Sms Siemag Ag | Verfahren zur Vorhersage, Steuerung und/oder Regelung von Stahlwerksprozessen |
-
2014
- 2014-09-30 EP EP14186962.8A patent/EP3002342A1/de not_active Withdrawn
-
2015
- 2015-08-06 CN CN201580053187.4A patent/CN106795573B/zh active Active
- 2015-08-06 BR BR112017006451-0A patent/BR112017006451B1/pt active IP Right Grant
- 2015-08-06 EP EP15750684.1A patent/EP3201367B1/de active Active
- 2015-08-06 WO PCT/EP2015/068148 patent/WO2016050399A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
BR112017006451B1 (pt) | 2022-01-18 |
CN106795573A (zh) | 2017-05-31 |
WO2016050399A1 (de) | 2016-04-07 |
BR112017006451A2 (pt) | 2017-12-12 |
EP3201367B1 (de) | 2018-06-13 |
CN106795573B (zh) | 2020-08-18 |
EP3002342A1 (de) | 2016-04-06 |
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