CN106544465B - A kind of control method preventing converter dry dedusting venting of dust explosion early period - Google Patents
A kind of control method preventing converter dry dedusting venting of dust explosion early period Download PDFInfo
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- CN106544465B CN106544465B CN201510590530.0A CN201510590530A CN106544465B CN 106544465 B CN106544465 B CN 106544465B CN 201510590530 A CN201510590530 A CN 201510590530A CN 106544465 B CN106544465 B CN 106544465B
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Abstract
The present invention relates to a kind of control methods preventing converter dry dedusting venting of dust explosion early period, reinforce Primary period control, specifically include following steps：1) desulfurization station takes molten iron sample to send laboratory to chemically examine as early as possible, and laboratory reaches converter two level to the chemical examination ingredient of molten iron sample；2) converter two level determines oxygen lance position, oxygen blast flow before blowing starts according to molten iron silicon content, and oxygen lance position table corresponding with flow control is sent to converter primary PLC；3) blowing starts rear converter primary PLC according to duration of blast progress monitoring oxygen blast flow and oxygen lance position.Advantage is：It determines that rational blowing flow and rifle position, stability cross the slagformation period of blowing according to different molten iron silicon numbers, avoids reaction in furnace excessively fierce, CO formation speeds is made to be slowly increased, to miss CO and O in flue gas2The venting of dust explosion limit.The oxygen flow and rifle position of Primary period are rationally controlled by this method, realize blowing early period zero venting of dust explosion of dry method dust.
Description
Technical field
The invention belongs to metallurgical technology field more particularly to a kind of controlling parties preventing converter dry dedusting venting of dust explosion early period
Method.
Background technology
Conventionally, as steelmaking process will generate coal gas of converter, once carbon will be occurred by controlling bad oxygen content
Oxygen react venting of dust explosion, currently, equipped with dry method dust converter system for venting of dust explosion control be always dry method dust steel mill pass
Key control point, but since the reality of process for making molten iron condition and appointed condition, converter smelting early period and smelting are interrupted
Drop oxygen rifle blows and generates venting of dust explosion and happen occasionally again afterwards.Under normal conditions, BOF Oxygen Lance Position operation and oxygen flow operation
All it is to modify and execute manually in level-one picture, causes operation poor since post employee skill is not quite similar after operating in this way
It is different bigger, while it is larger to judge that the employee with misoperation causes converter dry dedusting to unload quick-fried ratio.
Therefore, it is necessary to a kind of control methods for preventing venting of dust explosion phenomenon from occurring, and avoid reaction in furnace excessively fierce, can stability
The slagformation period for crossing blowing makes dry method drifting dust Plant in good condition run.
Invention content
In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a kind of converter dry dedusting ventings of dust explosion early period of preventing
Control method prevents converter dry dedusting venting of dust explosion from production being brought to delay and equipment breakdown, passes through programming and realizes oxygen rifle control and stream
Amount control adjust automatically simultaneously optimizes relevant parameter by process for making, realizes zero venting of dust explosion of converter dry dedusting.
To achieve the above object, the invention is realized by the following technical scheme：
A kind of control method preventing converter dry dedusting venting of dust explosion early period is reinforced Primary period control, is specifically included following
Step：
1) desulfurization station takes molten iron sample to send laboratory to chemically examine as early as possible, and laboratory reaches converter two to the chemical examination ingredient of molten iron sample
Grade；
2) converter two level determines oxygen lance position, oxygen blast flow before blowing starts according to molten iron silicon content, and by oxygen rifle rifle
Position table corresponding with flow control is sent to converter primary PLC；Oxygen lance position table corresponding with flow control is：
；
3) blowing starts rear converter primary PLC according to duration of blast progress monitoring oxygen blast flow and oxygen lance position.
Compared with prior art, the beneficial effects of the invention are as follows：
Determine that rational blowing flow and rifle position, stability are crossed the slagformation period of blowing, kept away according to different molten iron silicon numbers
It is excessively fierce to exempt from reaction in furnace, CO formation speeds is made to be slowly increased, to miss CO and O in flue gas2The venting of dust explosion limit.By this
Method rationally controls the oxygen flow and rifle position of Primary period, realizes blowing early period zero venting of dust explosion of dry method dust.Stabilize smelting
Refining control, improves converter operating rate, keeps organization of production more smooth, and dry method drifting dust Plant in good condition is made to run.
Description of the drawings
Fig. 1 is 2 minutes converter rifle positions and flow control structure block diagram before oxygen blast.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings of the specification, it should be noted that the implementation of the present invention is unlimited
In the following embodiments and the accompanying drawings.
See that Fig. 1, a kind of control method preventing converter dry dedusting venting of dust explosion early period reinforce Primary period control, it is specific to wrap
Include following steps：
1) desulfurization station takes molten iron sample to send laboratory to chemically examine as early as possible, and laboratory reaches converter two to the chemical examination ingredient of molten iron sample
Grade；
2) converter two level determines oxygen lance position, oxygen blast flow before blowing starts according to molten iron silicon content, and by oxygen rifle rifle
Position table corresponding with flow control is sent to converter primary PLC；Oxygen lance position table corresponding with flow control is：
；
3) blowing starts rear converter primary PLC according to duration of blast progress monitoring oxygen blast flow and oxygen lance position.
Embodiment
Desulfurization station takes molten iron sample to send laboratory to chemically examine as early as possible, and laboratory passes through laboratory in time to the chemical examination ingredient of molten iron sample
Two level reaches converter two level.Converter two level is before blowing starts according to molten iron silicon content and oxygen lance position table corresponding with flow control
Duration of blast, oxygen blast flow and oxygen lance position are sent to converter primary PLC.Blowing starts rear converter primary PLC according to blowing
Time schedule controls oxygen blast flow and oxygen lance position.
Wherein, molten iron silicon content and oxygen lance position table corresponding with flow control are：
。
Claims (1)
1. a kind of control method preventing converter dry dedusting venting of dust explosion early period, which is characterized in that reinforce blowing and controls for 2 minutes, tool
Body includes the following steps：
1) desulfurization station takes molten iron sample to send laboratory to chemically examine as early as possible, and laboratory reaches converter two level to the chemical examination ingredient of molten iron sample；
2) converter two level determines oxygen lance position, oxygen blast flow before blowing starts according to molten iron silicon content, and by oxygen lance position with
Flow control corresponds to table and is sent to converter primary PLC；Oxygen lance position table corresponding with flow control is：
；
3) blowing starts rear converter primary PLC according to duration of blast progress monitoring oxygen blast flow and oxygen lance position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510590530.0A CN106544465B (en) | 2015-09-17 | 2015-09-17 | A kind of control method preventing converter dry dedusting venting of dust explosion early period |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510590530.0A CN106544465B (en) | 2015-09-17 | 2015-09-17 | A kind of control method preventing converter dry dedusting venting of dust explosion early period |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106544465A CN106544465A (en) | 2017-03-29 |
| CN106544465B true CN106544465B (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510590530.0A Active CN106544465B (en) | 2015-09-17 | 2015-09-17 | A kind of control method preventing converter dry dedusting venting of dust explosion early period |
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| CN (1) | CN106544465B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099638B (en) * | 2017-05-19 | 2019-01-08 | 山东钢铁股份有限公司 | It is a kind of to prevent from dry method dust converter from opening being blown off quick-fried control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619375A (en) * | 2009-08-07 | 2010-01-06 | 山西太钢不锈钢股份有限公司 | Method for preventing electric precipitation detonation discharge of top and bottom blown converter |
| CN102952917A (en) * | 2012-11-08 | 2013-03-06 | 河北省首钢迁安钢铁有限责任公司 | Control method for preventing explosion venting of dry dedusting system in converter smelting process |
| CN103060511A (en) * | 2013-01-14 | 2013-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Oxygen supply method for preventing dedusting explosion venting of semisteel steel converter and semisteel smelting method |
| CN103074463A (en) * | 2013-01-04 | 2013-05-01 | 宣化钢铁集团有限责任公司 | Operation method of lifting lance in the midway of converter steelmaking under dry dedusting condition |
| CN104313235A (en) * | 2014-10-30 | 2015-01-28 | 攀钢集团西昌钢钒有限公司 | Method for preventing blowing explosion venting of dry dust-removing system of semi-steel steelmaking converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5585151B2 (en) * | 2010-03-24 | 2014-09-10 | 新日鐵住金株式会社 | Anti-slipping method |
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2015
- 2015-09-17 CN CN201510590530.0A patent/CN106544465B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619375A (en) * | 2009-08-07 | 2010-01-06 | 山西太钢不锈钢股份有限公司 | Method for preventing electric precipitation detonation discharge of top and bottom blown converter |
| CN102952917A (en) * | 2012-11-08 | 2013-03-06 | 河北省首钢迁安钢铁有限责任公司 | Control method for preventing explosion venting of dry dedusting system in converter smelting process |
| CN103074463A (en) * | 2013-01-04 | 2013-05-01 | 宣化钢铁集团有限责任公司 | Operation method of lifting lance in the midway of converter steelmaking under dry dedusting condition |
| CN103060511A (en) * | 2013-01-14 | 2013-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Oxygen supply method for preventing dedusting explosion venting of semisteel steel converter and semisteel smelting method |
| CN104313235A (en) * | 2014-10-30 | 2015-01-28 | 攀钢集团西昌钢钒有限公司 | Method for preventing blowing explosion venting of dry dust-removing system of semi-steel steelmaking converter |
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| CN106544465A (en) | 2017-03-29 |
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