CN107794337A - A kind of converter gas purification and coal-gas recovering RD valve dynamic control methods - Google Patents
A kind of converter gas purification and coal-gas recovering RD valve dynamic control methods Download PDFInfo
- Publication number
- CN107794337A CN107794337A CN201610802658.3A CN201610802658A CN107794337A CN 107794337 A CN107794337 A CN 107794337A CN 201610802658 A CN201610802658 A CN 201610802658A CN 107794337 A CN107794337 A CN 107794337A
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- CN
- China
- Prior art keywords
- valves
- converter
- gas
- coal
- exhaust gas
- 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.)
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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
- C21C5/38—Removal of waste gases or dust
Abstract
The present invention provides a kind of converter gas purification and coal-gas recovering RD valve dynamic control methods, and RD valve actuation state control programs are set up in converter PLC；When converter starts oxygen blast, converter PLC overturns the aperture of adjustment RD valves by agate actuator control valves plate difficult to understand, and by the exhaust gas volumn of RD valves, increase 20000L/h, 16~17s recover conventional setting value afterwards automatically on the basis of conventional setting value.When coal-gas recovering starts, triple valve starts action, converter PLC overturns the aperture of adjustment RD valves by agate actuator control valves plate difficult to understand, and the exhaust gas volumn of RD valves is increased into 20000L/h automatically on the basis of conventional setting value, recovers conventional setting value after 16~17s.This invention removes the influence that the unfavorable factor of RD valve adjustment times is controlled exhaust gas volumn, solve that the flue gas caused by exhaust gas volumn reduces on a large scale is excessive and coal-gas recovering calorific value loss problem, ensure that the direct motion of production and the controllability of cost.
Description
Technical field
It is more particularly to a kind of to be used for converter gas purification and coal-gas recovering RD valves the invention belongs to automatic control technology field
Dynamic control method.
Background technology
Certain steelwork converter gas cleaning, using " OG " method, is adjusted with gas recovery system secondly text shouts mouth using RD valves
Section.The adjustment control mode of RD valves is automatically controls, and the basic parameter controlled is converter gas amount, i.e., according to produce reality experience
An exhaust gas volumn (175000 cubes ms/h) is determined, when actually detected exhaust gas volumn differs larger with setting exhaust gas volumn, control
Program realizes the upset of valve plate to adjust the aperture of RD valves, with subtracting for above-mentioned two exhaust gas volumn difference by agate actuator difficult to understand
Small, the amplitude of adjustment valve plate switch is also less and less, final to realize that detection exhaust gas volumn is equal with setting value.Actual production process
In, because the intrinsic reason of technique causes actual exhaust gas volumn when beginning oxygen blast and coal-gas recovering to have a downward trough, also
It is to say, the exhaust gas volumn in suction system is less than setting value, excessive which results in converter dust, easily causes environmentally friendly accident, sternly
Recasting about produces direct motion.
By the way that in stokehold, it has been observed that when converter starts oxygen blast and starts coal-gas recovering, converter is smoldered larger.It is logical
Cross the discovery of research exhaust gas volumn trend curve, start oxygen blast and during coal-gas recovering, be pumped into the exhaust gas volumn of dust pelletizing system have one to
Under trough, it is minimum can to 151000 vertical/hours or so, and exhaust gas volumn about 175000 caused by actually bessemerizing it is vertical/hour,
Unnecessary flue gas overflows naturally to be caused to smolder.
It the analysis found that, it is because flue gas causes exhaust gas volumn by cold conditions to hot instantaneous variation that exhaust gas volumn, which reduces, during oxygen blast
Detected value becomes big suddenly, and the detected value is higher than the exhaust gas volumn in real system, and then causes control program " erroneous judgement " cigarette in logic
Tolerance is more than setting value, and RD valves turn down aperture automatically, causes flue gas to overflow fire door.And because threeway valve events are made when starting to reclaim
Pressure increases suddenly after into machine, and suction is die-offed before blower fan machine, and the exhaust gas volumn in actual suction system reduces, unnecessary flue gas
With regard to overflowing fire door.And RD valves tackle above-mentioned two situations adjustment aperture and are required to time of more than ten seconds automatically, thus the two when
Between section flue gas it is excessive be inevitable.
The content of the invention
The present invention is intended to provide one kind can avoid fire door flue gas excessive, improve the converter gas purification of coal-gas recovering calorific value with
Coal-gas recovering RD valve dynamic control methods.
For up to this purpose, this invention takes following technical solution：
A kind of converter gas purification and coal-gas recovering RD valve dynamic control methods, using converter PLC and agate actuator difficult to understand,
RD valve actuation state control programs are set up in converter PLC；When converter starts oxygen blast and coal-gas recovering, converter PLC is held by agate difficult to understand
The control valve plate upset of row device, adjusts the aperture of RD valves, by the exhaust gas volumn of RD valves on conventional setting value basis by the upset of valve plate
Recover conventional setting value after upper automatic increase 20000L/h, 16~17s, avoid flue gas from being caused by cold conditions to hot instantaneous variation
Flue gas detection values become big suddenly, and then it is excessive to cause RD valves to turn down flue gas caused by aperture automatically.
Equally, when coal-gas recovering starts, triple valve starts action, converter PLC is turned over by agate actuator control valves plate difficult to understand
The aperture of the whole RD valves of modulation, by the exhaust gas volumn of RD valves on the basis of conventional setting value increase 20000L/h automatically, after 16~17s
Recover conventional setting value, avoid caused by threeway valve events that exhaust gas volumn die-offs, RD valves increased in the aperture reaction time automatically
Flue gas it is excessive.
Beneficial effects of the present invention are：
The present invention need not increase equipment and investment, and the unfavorable factor of RD valve adjustment times has been eliminated since implementation to exhaust gas volumn
The influence of control, solves caused by exhaust gas volumn reduces on a large scale that flue gas is excessive and coal-gas recovering calorific value loss problem, turns
The calorific value of producer gas recovery is improved, and ensure that the direct motion of production and the controllability of cost.
Embodiment
Converter gas purification of the present invention and coal-gas recovering RD valve dynamic control methods, mainly using original converter PLC and
Agate actuator difficult to understand, while RD valve actuation state control programs are set up in converter PLC.
When converter starts oxygen blast and coal-gas recovering, converter PLC is overturn by agate actuator control valves plate difficult to understand, passes through valve
Plate upset adjustment RD valves aperture, by the exhaust gas volumn of RD valves on the basis of conventional setting value automatically increase 20000L/h, 15s it
After recover conventional setting value, avoid flue gas flue gas detection values as caused by cold conditions to hot instantaneous variation from becoming big suddenly, and then
RD valves are caused to turn down flue gas caused by aperture automatically excessive.
Equally, when coal-gas recovering starts, triple valve starts action, converter PLC is turned over by agate actuator control valves plate difficult to understand
The aperture of the whole RD valves of modulation, by the exhaust gas volumn of RD valves, increase 20000L/h, 15s recover afterwards automatically on the basis of conventional setting value
Conventional setting value, the exhaust gas volumn caused by threeway valve events is avoided to die-off, RD valves increase cigarette in the aperture reaction time automatically
Gas is excessive.
Claims (1)
1. a kind of converter gas purification and coal-gas recovering RD valve dynamic control methods, using converter PLC and agate actuator difficult to understand, it is special
Sign is, RD valve actuation state control programs are set up in converter PLC；When converter starts oxygen blast and coal-gas recovering, converter PLC leads to
Agate actuator control valves plate upset difficult to understand is crossed, the aperture of RD valves is adjusted by the upset of valve plate, the exhaust gas volumn of RD valves is set routinely
Increase 20000L/h, 16~17s recover conventional setting value afterwards, avoid flue gas by cold conditions to hot moment automatically in the basis of valuation
Flue gas detection values caused by change become big suddenly, and then it is excessive to cause RD valves to turn down flue gas caused by aperture automatically；
Equally, when coal-gas recovering starts, triple valve starts action, converter PLC is overturn by agate actuator control valves plate difficult to understand and adjusted
The aperture of whole RD valves, by the exhaust gas volumn of RD valves, increase 20000L/h, 16~17s recover afterwards automatically on the basis of conventional setting value
Conventional setting value, the exhaust gas volumn caused by threeway valve events is avoided to die-off, RD valves increase cigarette in the aperture reaction time automatically
Gas is excessive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802658.3A CN107794337A (en) | 2016-09-06 | 2016-09-06 | A kind of converter gas purification and coal-gas recovering RD valve dynamic control methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802658.3A CN107794337A (en) | 2016-09-06 | 2016-09-06 | A kind of converter gas purification and coal-gas recovering RD valve dynamic control methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107794337A true CN107794337A (en) | 2018-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610802658.3A Pending CN107794337A (en) | 2016-09-06 | 2016-09-06 | A kind of converter gas purification and coal-gas recovering RD valve dynamic control methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107794337A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113403445A (en) * | 2021-05-18 | 2021-09-17 | 山东师范大学 | Intelligent control system and control method for purifying and recycling converter flue gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399935A (en) * | 2011-11-11 | 2012-04-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for improving gas effect of OG (Oxygen Gas Recovery System) method recovery converter |
| CN202380016U (en) * | 2011-11-12 | 2012-08-15 | 马鞍山伏斯特自控技术有限公司 | Optimized control device for recycling coal gas of converter |
| CN204690030U (en) * | 2015-05-27 | 2015-10-07 | 鞍钢股份有限公司 | A kind of converter gas dust removing automatic controller |
-
2016
- 2016-09-06 CN CN201610802658.3A patent/CN107794337A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399935A (en) * | 2011-11-11 | 2012-04-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for improving gas effect of OG (Oxygen Gas Recovery System) method recovery converter |
| CN202380016U (en) * | 2011-11-12 | 2012-08-15 | 马鞍山伏斯特自控技术有限公司 | Optimized control device for recycling coal gas of converter |
| CN204690030U (en) * | 2015-05-27 | 2015-10-07 | 鞍钢股份有限公司 | A kind of converter gas dust removing automatic controller |
Non-Patent Citations (2)
| Title |
|---|
| 马中海: "转炉煤气回收过程优化控制技术研究与应用", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 马荣芳等: "转炉烟气净化及煤气回收系统中炉口微差压的自动控制", 《电气传动》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113403445A (en) * | 2021-05-18 | 2021-09-17 | 山东师范大学 | Intelligent control system and control method for purifying and recycling converter flue gas |
| WO2022241920A1 (en) * | 2021-05-18 | 2022-11-24 | 山东师范大学 | Converter flue gas purification and recovery intelligent control system and control method |
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Application publication date: 20180313 |
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