CN107557520A - The autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow - Google Patents
The autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow Download PDFInfo
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- CN107557520A CN107557520A CN201710587194.3A CN201710587194A CN107557520A CN 107557520 A CN107557520 A CN 107557520A CN 201710587194 A CN201710587194 A CN 201710587194A CN 107557520 A CN107557520 A CN 107557520A
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- oxygen
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Abstract
The present invention relates to the autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow, belong to converter steelmaking process technical field.Its technical scheme is：Including static calculation model, charging control module, oxygen rifle control module three parts；The charging control module is that the material step information command of smelting process is passed to the PLC of charging system, realizes that feeding operation automatically controls in smelting process by the basic automation systems of charging system；The oxygen rifle control module is that the oxygen of smelting process step information command is passed to the PLC of oxygen rifle system, is performed by the basic automation systems of oxygen rifle system, realizes automatically controlling for smelting process oxygen lance position and oxygen flow.Beneficial effect of the present invention：The whole-process automatic control of pneumatic steelmaking charging, oxygen lance position and oxygen flow is realized, the normalizing operation level and steel quality stability of smelting is favorably improved, improves converter producing efficiency, reduce converter raw and auxiliary material and disappear, reduce pneumatic steelmaking cost.
Description
Technical field
The present invention relates to the autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow, belong to converter
Process for making technical field.
Background technology
Convertor steelmaking process is to be blown into high speed oxygen jet into stove using oxygen rifle, is added using the high hopper at the top of converter
Enter slag material, cooling agent, make oxygen, slag material, cooling agent and molten iron that the physical-chemical reaction of complexity occur in stove, realization is gone
Except the purpose of impurity in molten steel and lifting liquid steel temperature.With the development of computer autocontrol technique, add in convertor steelmaking process
Material, the control of oxygen lance position and oxygen flow progressively turn to computer controlled automatic by artificial experience, it is achieved thereby that converter is certainly
Dynamic steel-making.Automatically controlling for converter charging, oxygen lance position and oxygen flow how is realized in smelting process, realizes standardization behaviour
Make, to improving production efficiency, improving steel quality has obvious facilitation.Chinese patent " control automatically by a kind of converter oxygen gun
Method processed " (CN105200180 A) discloses a kind of control method of oxygen rifle in convertor steelmaking process；Chinese patent " is used for certainly
" converter auxiliary material adds for the automatic feeding system and its control method of dynamic steelmaking converter " (A of CN 10224889) and Chinese patent
Access control method " (CN104975133 A) discloses automatic control system and the side for the process that fed in convertor steelmaking process respectively
Method.Above three patent content just in steelmaking process in a certain respect or a certain process is described, for instruct turn
The control of stove steelmaking process has certain limitation.
The content of the invention
It is real it is an object of the present invention to provide the autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow
The whole-process automatic control of existing pneumatic steelmaking charging, oxygen lance position and oxygen flow, it is favorably improved the normalizing operation water of smelting
Gentle steel quality stability, converter producing efficiency is improved, reduce converter raw and auxiliary material and disappear, reduce pneumatic steelmaking cost, solve
Above mentioned problem existing for background technology.
The present invention solves above-mentioned technical problem and adopted the technical scheme that：
The autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow, including static calculation model, charging control
Molding block, oxygen rifle control module three parts；
The static calculation model, it is according to the condition for entering stove molten iron, steel scrap and supplementary material, according to the molten steel desired value meter of setting
Oxygen demand, the addition of various materials needed for smelting are calculated, and generates the reality of corresponding charging, oxygen lance position and oxygen flow
Border controlling curve；The actual controlling curve is the material step information and oxygen step information of smelting process；The oxygen step information includes oxygen
Rifle rifle position information and oxygen flow information；
The charging control module is that the material step information command of smelting process is passed to the PLC of charging system, by charging system
Basic automation systems realize that feeding operation automatically controls in smelting process；
The oxygen rifle control module is that the oxygen step information command of smelting process is passed to the PLC of oxygen rifle system, by oxygen rifle system
Basic automation systems perform, realize automatically controlling for smelting process oxygen lance position and oxygen flow.
More specifically implementation steps are as follows：
1) start static calculation model, and various parameter of materials in static models are set；
2) static calculation model obtains the molten iron and steel scrap information for smelting heat, including hot metal composition, temperature, addition automatically
With steel scrap composition, addition；
3) desired value of heat of molten steel is smelted in setting in static calculation model, including is mainly target temperature and target component；
4) according to the benchmark rifle position for smelting heat charge weight setting oxygen rifle in static calculation model；
5) the precomputation function in static models is utilized, the material step information and oxygen step information of heat are smelted in generation；
6) charging control module is switched into automatic control state；
7) oxygen rifle control module is switched into automatic control state, including control of lance position and oxygen flux control；
8) start and start to blow, smelting process walks information by the material of setting and oxygen step information is carried out automatically；
9) when accumulation blowing oxygen quantity reaches the blowing oxygen quantity of static models calculating, oxygen rifle automatic lifting to setting position, blowing knot
Beam.
If there are abnormal conditions in smelting process, it is necessary to during manual intervention, on existing operation screen or operate
Directly operated on platform, charging control module and oxygen rifle control module are switched into manual state of a control immediately, be easy to artificial
The implementation of intervention.
Purpose of the invention by sending dependent instruction realization control relevant device to the PLC of basic automation systems, no
Directly relevant device is controlled, can at utmost utilize existing basis converter automated system, and keep its integrality.
Beneficial effect of the present invention：The whole-process automatic control of pneumatic steelmaking charging, oxygen lance position and oxygen flow is realized, is helped
In the normalizing operation level and steel quality stability that improve smelting, converter producing efficiency is improved, reduces converter raw and auxiliary material
Disappear, reduce pneumatic steelmaking cost.
Brief description of the drawings
Fig. 1 indicates the technological process of the present invention；
Fig. 2 is the material step information and oxygen step information rate-determining steps of the present invention；
Fig. 3 is the material step information and oxygen step information rate-determining steps of the embodiment of the present invention one；
Fig. 4 is the material step information and oxygen step information rate-determining steps of the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention will be further described.
Convertor steelmaking process charging, the autocontrol method of oxygen lance position and oxygen flow, including static calculation model plus
Expect control module, oxygen rifle control module three parts；
The static calculation model, it is according to the condition for entering stove molten iron, steel scrap and supplementary material, according to the molten steel desired value meter of setting
Oxygen demand, the addition of various materials needed for smelting are calculated, and generates the reality of corresponding charging, oxygen lance position and oxygen flow
Border controlling curve；The actual controlling curve is the material step information and oxygen step information of smelting process；The oxygen step information includes oxygen
Rifle rifle position information and oxygen flow information；
The charging control module is that the material step information command of smelting process is passed to the PLC of charging system, by charging system
Basic automation systems realize that feeding operation automatically controls in smelting process；
The oxygen rifle control module is that the oxygen step information command of smelting process is passed to the PLC of oxygen rifle system, by oxygen rifle system
Basic automation systems perform, realize automatically controlling for smelting process oxygen lance position and oxygen flow.
More specifically implementation steps are as follows：Referring to the drawings body 1,2.
1) start static calculation model, and various parameter of materials in static models are set；
2) static calculation model obtains the molten iron and steel scrap information for smelting heat, including hot metal composition, temperature, addition automatically
With steel scrap composition, addition；
3) desired value of heat of molten steel is smelted in setting in static calculation model, including is mainly target temperature and target component；
4) according to the benchmark rifle position for smelting heat charge weight setting oxygen rifle in static calculation model；
5) the precomputation function in static models is utilized, the material step information and oxygen step information of heat are smelted in generation；
6) charging control module is switched into automatic control state；
7) oxygen rifle control module is switched into automatic control state, including control of lance position and oxygen flux control；
8) start and start to blow, smelting process walks information by the material of setting and oxygen step information is carried out automatically；
9) when accumulation blowing oxygen quantity reaches the blowing oxygen quantity of static models calculating, oxygen rifle automatic lifting to setting position, blowing knot
Beam.
If there are abnormal conditions in smelting process, it is necessary to during manual intervention, on existing operation screen or operate
Directly operated on platform, charging control module and oxygen rifle control module are switched into manual state of a control immediately, be easy to artificial
The implementation of intervention.
Embodiments of the invention one, referring to the drawings 3：
1) start static calculation model, and various parameter of materials in static models are set；
2) static calculation model obtains the molten iron and steel scrap information for smelting heat automatically, and molten iron charge weight is 72.4t, molten iron temperature
Spend for 1320 DEG C, adding amount of scrap steel 6.23t；
3) desired value of heat of molten steel is smelted in setting in static calculation model, and molten steel target temperature is 1665 DEG C, and aim carbon contains
Measure as 0.06%；
4) according to the benchmark rifle position for smelting heat charge weight setting oxygen rifle, benchmark rifle position 1.85m in static calculation model；
5) the precomputation function in static models is utilized, the material step information and oxygen step information of heat are smelted in generation, as shown in Figure 3；
6) charging control module is switched into automatic control state；
7) oxygen rifle control module is switched into automatic control state, including control of lance position and oxygen flux control；
8) start and start to blow, smelting process walks information by the material of setting and oxygen step information is carried out automatically；
9) when accumulation blowing oxygen quantity reaches the blowing oxygen quantity of static models calculating, oxygen rifle automatic lifting to setting position, blowing knot
Beam, the present embodiment blowing oxygen quantity are 3561Nm3。
Embodiments of the invention two, referring to the drawings 4：
1) start static calculation model, and various parameter of materials in static models are set；
2) static calculation model obtains the molten iron and steel scrap information for smelting heat automatically, and molten iron charge weight is 72.1t, molten iron temperature
Spend for 1336 DEG C, adding amount of scrap steel 5.1t；
3) desired value of heat of molten steel is smelted in setting in static calculation model, and molten steel target temperature is 1665 DEG C, and aim carbon contains
Measure as 0.06%；
4) according to the benchmark rifle position for smelting heat charge weight setting oxygen rifle, benchmark rifle position 1.85m in static calculation model；
5) the precomputation function in static models is utilized, the material step information and oxygen step information of heat are smelted in generation, as shown in Figure 3；
6) charging control module is switched into automatic control state；
7) oxygen rifle control module is switched into automatic control state, including control of lance position and oxygen flux control；
8) start and start to blow, smelting process walks information by the material of setting and oxygen step information is carried out automatically；
9) when accumulation blowing oxygen quantity reaches the blowing oxygen quantity of static models calculating, oxygen rifle automatic lifting to setting position, blowing knot
Beam, the present embodiment blowing oxygen quantity are 3481Nm3。
Claims (3)
1. the autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow, it is characterised in that counted including static state
Calculate model, charging control module, oxygen rifle control module three parts；
The static calculation model, it is according to the condition for entering stove molten iron, steel scrap and supplementary material, according to the molten steel desired value meter of setting
Oxygen demand, the addition of various materials needed for smelting are calculated, and generates the reality of corresponding charging, oxygen lance position and oxygen flow
Border controlling curve；The actual controlling curve is the material step information and oxygen step information of smelting process；The oxygen step information includes oxygen
Rifle rifle position information and oxygen flow information；
The charging control module is that the material step information command of smelting process is passed to the PLC of charging system, by charging system
Basic automation systems realize that feeding operation automatically controls in smelting process；
The oxygen rifle control module is that the oxygen step information command of smelting process is passed to the PLC of oxygen rifle system, by oxygen rifle system
Basic automation systems perform, realize automatically controlling for smelting process oxygen lance position and oxygen flow.
2. the autocontrol method of convertor steelmaking process charging according to claim 1, oxygen lance position and oxygen flow, its
It is characterised by that more specifically implementation steps are as follows：
1) start static calculation model, and various parameter of materials in static models are set；
2) static calculation model obtains the molten iron and steel scrap information for smelting heat, including hot metal composition, temperature, addition automatically
With steel scrap composition, addition；
3) desired value of heat of molten steel is smelted in setting in static calculation model, including is mainly target temperature and target component；
4) according to the benchmark rifle position for smelting heat charge weight setting oxygen rifle in static calculation model；
5) the precomputation function in static models is utilized, the material step information and oxygen step information of heat are smelted in generation；
6) charging control module is switched into automatic control state；
7) oxygen rifle control module is switched into automatic control state, including control of lance position and oxygen flux control；
8) start and start to blow, smelting process walks information by the material of setting and oxygen step information is carried out automatically；
9) when accumulation blowing oxygen quantity reaches the blowing oxygen quantity of static models calculating, oxygen rifle automatic lifting to setting position, blowing knot
Beam.
3. the autocontrol method of convertor steelmaking process charging according to claim 1, oxygen lance position and oxygen flow, its
It is characterised by：If there are abnormal conditions in smelting process, it is necessary to during manual intervention, on existing operation screen or operate
Directly operated on platform, charging control module and oxygen rifle control module are switched into manual state of a control immediately.
Priority Applications (1)
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| CN201710587194.3A CN107557520A (en) | 2017-07-18 | 2017-07-18 | The autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow |
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| CN201710587194.3A CN107557520A (en) | 2017-07-18 | 2017-07-18 | The autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111334637A (en) * | 2020-03-25 | 2020-06-26 | 宝钢湛江钢铁有限公司 | Self-recognition method and system for height and flow mode of converter oxygen lance |
| CN114507762A (en) * | 2020-11-15 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Converter smelting control method for high steel-iron ratio |
| CN115369209A (en) * | 2022-07-08 | 2022-11-22 | 阳春新钢铁有限责任公司 | Operation method for accurately controlling lance position in converter smelting process |
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| CN101845531A (en) * | 2010-05-07 | 2010-09-29 | 北京首钢自动化信息技术有限公司 | Converter smelting endpoint molten steel carbon and temperature control system and method thereof |
| CN102251069A (en) * | 2011-08-16 | 2011-11-23 | 北京首钢自动化信息技术有限公司 | Automatic control method of dephosphorization converter |
| CN103642972A (en) * | 2013-12-16 | 2014-03-19 | 新余钢铁集团有限公司 | Intelligent optimization control system for tapping temperature of converter |
| CN104212933A (en) * | 2014-08-19 | 2014-12-17 | 北京首钢自动化信息技术有限公司 | An automatic control method for converter smelting with less slag |
| CN104480248A (en) * | 2014-11-26 | 2015-04-01 | 上海梅山科技发展有限公司 | Full-automatic control system and method for converter single-slag process |
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| CN102251069A (en) * | 2011-08-16 | 2011-11-23 | 北京首钢自动化信息技术有限公司 | Automatic control method of dephosphorization converter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111334637A (en) * | 2020-03-25 | 2020-06-26 | 宝钢湛江钢铁有限公司 | Self-recognition method and system for height and flow mode of converter oxygen lance |
| CN111334637B (en) * | 2020-03-25 | 2021-07-13 | 宝钢湛江钢铁有限公司 | Self-recognition method and system for height and flow mode of converter oxygen lance |
| CN114507762A (en) * | 2020-11-15 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Converter smelting control method for high steel-iron ratio |
| CN115369209A (en) * | 2022-07-08 | 2022-11-22 | 阳春新钢铁有限责任公司 | Operation method for accurately controlling lance position in converter smelting process |
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Application publication date: 20180109 |
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