EP2576846A2 - Verfahren und vorrichtung zum bestimmen des zeitpunktes der zündung beim aufblasverfahren in einem stahlkonverter - Google Patents
Verfahren und vorrichtung zum bestimmen des zeitpunktes der zündung beim aufblasverfahren in einem stahlkonverterInfo
- Publication number
- EP2576846A2 EP2576846A2 EP11723340.3A EP11723340A EP2576846A2 EP 2576846 A2 EP2576846 A2 EP 2576846A2 EP 11723340 A EP11723340 A EP 11723340A EP 2576846 A2 EP2576846 A2 EP 2576846A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation intensity
- ignition
- time
- sensor
- converter
- 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
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000007664 blowing Methods 0.000 title abstract description 20
- 230000005855 radiation Effects 0.000 claims abstract description 88
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 39
- 239000001301 oxygen Substances 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000000605 extraction Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000012935 Averaging Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 14
- 229910000805 Pig iron Inorganic materials 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000001454 recorded image Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000004886 process control Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009618 Bessemer process Methods 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010033546 Pallor Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 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
- 238000005375 photometry Methods 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- C21C5/42—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—Arrangement of monitoring devices; Arrangement of safety devices
- F27D21/02—Observation or illuminating devices
Definitions
- the invention relates to a method for determining the time of ignition in the inflation process, in particular in the LD method, in one
- the aim of steel production is to 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.
- Oxidation process which lowers the carbon content (the refining), provides in these processes enough heat to keep the steel liquid, an external one
- FIG. 4 shows a sequence of images of the gap between the extraction hood and the converter mouth.
- FIG. 5 shows a diagram with the time profile of the radiation intensity and FIG other process parameters,
- the sensor / camera 14 is mounted at a distance of 1 to 3 m by means of a surrounding housing 23 to the housing of the steel converters 1, in such a way that its optical axis 12 in the gap between the exhaust hood 5 and steel converter 1 and whose converter term is addressed.
- Gray scale provides (black and white CCD image sensor). It is also possible to use color cameras whose images are then converted to grayscale images via software.
- the sensor is preceded by an objective 13, which together with the sensor 14 forms a camera.
- the aperture of the lens and the exposure time of the camera sensor can be adjusted. The best way is that before the oxygen bubbles taken pictures, so if certainly no ignition has taken place, have no exposure, so are black. This has the advantage that a pixel will go into saturation only if the radiation intensity actually comes from a hot flame, as it is found only after ignition. Flames are often there even before the ignition, but not with as much brightness as when lighting.
- the image signals of the sensor 14 are forwarded via a line 19 to the computer 20, which processes and evaluates them. This can be a computer that only performs the image processing and evaluation and the data obtained, in particular the time of ignition, to the
- the computer 20 may also be the central computer, in addition to its other tasks the
- Temperature measurements in the housing 23 can be performed by the computer 20. Furthermore, it can be provided that the objective 13 or the cover of the objective 13 with purging air (not shown) is kept free. Of the
- Coolant flow and the air pressure of the air purge are constantly monitored to detect malfunctions immediately.
- FIG. 3 an image recorded by the sensor 14 is shown, in which case the ignition has already taken place.
- the upper dark picture area represents the
- the flap 26 is opened, so that at the beginning of the blowing process, where oxygen is then blown through the lance into the steel converter 1, in any case already radiation / light can pass through the lens 13 to the sensor 14 , Accordingly, the first images of the image sequence shown in FIG. 4 taken before the blowing process are almost entirely black.
- Oxygen flow> 100 Nm 3 / min) are then continuously recorded images, for example, here per second 10 images (recordings in 100 ms cycle).
- the shutter speed of the camera and the aperture are adjusted to a suitable, fixed setting (darkened image).
- the beginning of the recording can also be specified by the central computer, which starts the start of recording with the switching on of the oxygen supply to the lance 7 or with the achievement of a certain oxygen flow rate.
- the exposure time usually ranges between 1 / 1,000th and 1 / 50,000th of a second. Another condition for the actual ignition is that a required minimum oxygen flow is given.
- the computer 20 selects from the region of interest 15, which is the same for all images from the same pixels, those hundred pixels or pixels which are the brightest. Your
- Radiation intensity of the ignition is equal to or above or whose final radiation intensity is in a certain ratio to that of the previous image (according to the determined slope of the curve when ignition has occurred) or exceeds this ratio. It is better to take more pictures to make sure that the radiation intensities do not decrease again or the slope does not decrease again. In doing so, shorter, temporary intensity dips due to heavy smoke development can be disregarded.
- Fig. 5 is - among other things - the time course of measured by the sensor 14 and determined by the method according to the invention
- the curve 16 represents the provisional determined as described above
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Studio Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT9112010A AT509866B1 (de) | 2010-06-02 | 2010-06-02 | Verfahren zum bestimmen des zeitpunktes der zündung beim aufblasverfahren |
| PCT/EP2011/057672 WO2011151143A2 (de) | 2010-06-02 | 2011-05-12 | Verfahren zum bestimmen des zeitpunktes der zündung beim aufblasverfahren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2576846A2 true EP2576846A2 (de) | 2013-04-10 |
| EP2576846B1 EP2576846B1 (de) | 2014-12-17 |
Family
ID=44626745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11723340.3A Not-in-force EP2576846B1 (de) | 2010-06-02 | 2011-05-12 | Verfahren und vorrichtung zum bestimmen des zeitpunktes der zündung beim aufblasverfahren in einem stahlkonverter |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2576846B1 (de) |
| CN (1) | CN102906281B (de) |
| AT (1) | AT509866B1 (de) |
| RU (1) | RU2564178C2 (de) |
| WO (1) | WO2011151143A2 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692271B (zh) * | 2012-06-14 | 2014-05-07 | 中国气象科学研究院 | 基于天空可见光图像的太阳直接辐射强度测量方法和装置 |
| CN102721988B (zh) * | 2012-06-14 | 2014-09-03 | 中国气象科学研究院 | 基于天空可见光图像的日照时数测量方法 |
| UA113614C2 (xx) | 2013-02-14 | 2017-02-27 | Спосіб експлуатації кисневої продувальної фурми в металургійній ємності і вимірювальна система для визначення використовуваних при цьому сигналів вимірювань | |
| EP3002341A1 (de) | 2014-09-30 | 2016-04-06 | Primetals Technologies Austria GmbH | Verfahren und Vorrichtung zum Bestimmen des Zeitpunktes der Zündung bei einem Sauerstoffblasverfahren |
| EP3002342A1 (de) | 2014-09-30 | 2016-04-06 | Primetals Technologies Austria GmbH | Verfahren und Vorrichtung zum Bestimmen des Zeitpunktes der Zündung bei einem Sauerstoffblasverfahren |
| DE102014222788A1 (de) * | 2014-11-07 | 2016-05-12 | Sms Group Gmbh | Verfahren und Vorrichtung zum Regeln des Druckes im Abgaskanal eines Konverters |
| JP6617855B2 (ja) * | 2017-06-30 | 2019-12-11 | Jfeスチール株式会社 | 転炉の操業監視方法および転炉の操業方法 |
| JP6954262B2 (ja) * | 2018-12-28 | 2021-10-27 | Jfeスチール株式会社 | 転炉の操業方法 |
| CN109897929A (zh) * | 2019-03-18 | 2019-06-18 | 共享智能铸造产业创新中心有限公司 | 铸铁三明治工艺球化时间自动采集系统及其工作方法 |
| CN111753691B (zh) * | 2020-06-15 | 2024-01-02 | 上海电气集团股份有限公司 | 一种检测及控制气化炉的方法、设备及系统 |
| CN113106191A (zh) * | 2021-05-21 | 2021-07-13 | 广西金智信息科技有限公司 | 一种基于图像识别的智能炼钢转炉看火装置 |
| DE102021004593A1 (de) | 2021-09-10 | 2023-03-16 | Promecon Process Measurement Control Gmbh | Metallurgischer Schmelzofen sowie Verfahren zur Bestimmung der Menge an heteromolekularem Gas |
| CN119103879B (zh) * | 2024-10-16 | 2025-09-23 | 常州市新创智能科技有限公司 | 基于红外成像的预氧化炉火焰检测方法及系统 |
| CN119555868A (zh) * | 2024-11-20 | 2025-03-04 | 天津大学 | 一种单颗粒陈腐垃圾点火光学诊断系统及方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3528800A (en) * | 1966-02-14 | 1970-09-15 | Leeds & Northrup Co | Optimized blowing control for basic oxygen furnaces |
| JPS5027805B1 (de) * | 1967-04-13 | 1975-09-10 | ||
| AT299283B (de) * | 1969-04-08 | 1972-06-12 | Voest Ag | Verfahren zur Betriebsregelung von Sauerstoffaufblaseverfahren |
| FI79623C (fi) * | 1986-10-16 | 1990-01-10 | Imatran Voima Oy | Bildbehandlingsfoerfarande vid dammbraenning. |
| JPH0598335A (ja) * | 1991-10-09 | 1993-04-20 | Nkk Corp | 転炉スロツピング予知方法 |
| US6175676B1 (en) * | 1999-02-23 | 2001-01-16 | Bethlehem Steel Corporation | Fiber optic sensor and method of use thereof to determine carbon content of molten steel contained in a basic oxygen furnace |
| JP4439991B2 (ja) * | 2004-04-30 | 2010-03-24 | Jfeスチール株式会社 | 火点放射計測方法及びその装置 |
| CN101698896B (zh) * | 2009-09-28 | 2013-01-30 | 南京理工大学 | 炉口辐射信息融合用于炼钢在线终点控制的方法 |
-
2010
- 2010-06-02 AT AT9112010A patent/AT509866B1/de not_active IP Right Cessation
-
2011
- 2011-05-12 CN CN201180026997.2A patent/CN102906281B/zh not_active Expired - Fee Related
- 2011-05-12 RU RU2012157724/02A patent/RU2564178C2/ru active
- 2011-05-12 WO PCT/EP2011/057672 patent/WO2011151143A2/de not_active Ceased
- 2011-05-12 EP EP11723340.3A patent/EP2576846B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011151143A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102906281A (zh) | 2013-01-30 |
| CN102906281B (zh) | 2014-06-04 |
| WO2011151143A3 (de) | 2012-04-19 |
| AT509866B1 (de) | 2011-12-15 |
| WO2011151143A2 (de) | 2011-12-08 |
| EP2576846B1 (de) | 2014-12-17 |
| AT509866A4 (de) | 2011-12-15 |
| RU2012157724A (ru) | 2014-07-20 |
| RU2564178C2 (ru) | 2015-09-27 |
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