CN112593032A - Key parameter processing method for blast furnace heat exchange air furnace - Google Patents
Key parameter processing method for blast furnace heat exchange air furnace Download PDFInfo
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- CN112593032A CN112593032A CN202011459315.4A CN202011459315A CN112593032A CN 112593032 A CN112593032 A CN 112593032A CN 202011459315 A CN202011459315 A CN 202011459315A CN 112593032 A CN112593032 A CN 112593032A
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- 238000003672 processing method Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the technical field of blast furnace ironmaking, in particular to a method for processing key parameters during a blast furnace heat exchange air furnace, which comprises the following steps: monitoring and receiving signals; judging whether the blast furnace is in a furnace changing state or not according to the opening and closing signals of the equalizing valve of the hot blast furnace; collecting information in different forms according to whether the blast furnace is in a furnace change state; by using the technical scheme of the invention, the on-off position signal of the pressure equalizing valve of the hot blast stove is taken as the start point and the end point of the furnace changing state, the key parameter during furnace changing is represented by the last data before the furnace changing state according to the latest current operating parameter, the furnace changing time is accurately positioned, the data processing is reasonable, the data distortion is avoided, and the data statistics and analysis are facilitated.
Description
Technical Field
The invention relates to the technical field of blast furnace ironmaking, in particular to a method for processing key parameters during a blast furnace heat exchange air furnace.
Background
Blast furnace iron-making, which is a main supplier of pig iron, plays an important role in steel production, and directly affects subsequent processes such as steel making, continuous casting and the like. In the daily blast furnace production, because the blast furnace is a closed system, an operator cannot directly observe the operation condition in the furnace, and can only use parameters such as temperature detection, pressure detection and the like as data support and combine operation experience to analyze and judge the furnace condition.
Because the hot blast stove needs to be switched between the combustion state and the air supply state during production, the blast furnace needs to be switched between the air supply state and the hot blast stove every hour. When the blast furnace exchanges heat with the air furnace, manual air supplement is needed, the air volume is greatly increased, the air pressure is reduced, the distortion of key parameters such as the air volume, the air pressure, the pressure difference, the air permeability index and the like for 6-10min is caused, and the judgment of an operator on the current furnace condition is directly influenced. However, in the operation process of the blast furnace, key parameters such as air volume and air pressure are in a continuous fluctuation state, and whether the blast furnace is in a furnace change state cannot be judged through parameter changes at the initial stage and the final stage of furnace change, so that accurate time positioning of the furnace change state is necessary, and data processing is adopted to represent the key parameters in the furnace change state.
In the iron-making industry, a comparison method is mainly adopted for processing key parameters during furnace replacement. The latest collected data is compared with the previous twenty collected data, if the fluctuation amplitude of the latest collected data is more than 5 percent relative to the average value of the previous twenty collected data, the furnace change state is judged, and the average value of the previous twenty collected data is adopted by the current data until the fluctuation amplitude returns to within 5 percent. The method represents the furnace changing state of the blast furnace through a numerical comparison method, and is suitable for the condition of the blast furnace to be stable or fluctuate slightly; when the furnace condition of the blast furnace fluctuates greatly and the parameters deviate greatly in a single direction, the method can judge the blast furnace fluctuation early warning state as the furnace change state, the current real-time furnace condition is covered after data processing, and judgment of blast furnace operators is easily misled. And the numerical comparison method determines that the furnace changing state is not entered when the parameter fluctuation at the initial stage and the final stage of the furnace changing is small, and actually shortens the time of the furnace changing state.
In summary, in the conventional blast furnace heat exchange air furnace, the key parameter processing mainly determines the furnace changing time through the variation range of the parameter, and then adopts the average value to perform data representation. The method for processing the key parameters of the heat exchange air furnace of the blast furnace cannot accurately position the furnace changing time and is only suitable for the relatively stable stage of the furnace condition.
Based on the method, the invention designs a key parameter processing method for the heat exchange air furnace of the blast furnace to solve the problems.
Disclosure of Invention
The invention aims to solve the problems in the background technology and provides a method for processing key parameters during heat exchange of a blast furnace heat exchange air furnace.
In order to achieve the purpose, the invention provides the following technical scheme:
a key parameter processing method for a blast furnace heat exchange air furnace comprises the following steps:
the method comprises the following steps: monitoring and receiving signals, naming a hot blast stove pressure equalizing valve, monitoring and receiving opening and closing position signals of the hot blast stove pressure equalizing valve in real time, setting the state of the hot blast stove by adopting the opening and closing positions of the pressure equalizing valve, and transmitting the real-time signals to a data processor of the blast furnace;
step two: judging whether the blast furnace is in a furnace changing state or not according to the opening and closing signals of the equalizing valve of the hot blast furnace;
step three: collecting key parameters in different forms according to whether the blast furnace is in a furnace change state, and collecting data in real time by using the key parameters of the blast furnace when the blast furnace is not in the furnace change state; when the blast furnace is in the furnace changing state, the key parameters use the last data before the furnace changing state, and the real-time data acquisition is adopted after the furnace changing state is finished.
Furthermore, the state of the hot blast stove is determined by the opening position and the closing position of the pressure equalizing valve, the open position signal of the pressure equalizing valve indicates that the hot blast stove is in a furnace changing state of converting combustion into air supply or converting air supply into combustion, and the closing position signal of the pressure equalizing valve indicates that the hot blast stove is in a combustion or air supply state.
Further, the key parameters comprise air volume, air pressure, pressure difference and air permeability index.
Further, the data processor is an MCU microprocessor.
Further, the data processor is in signal connection with a display and a data memory.
Further, the display is an LED liquid crystal display screen.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the key parameter processing method during the blast furnace heat exchange air furnace, the key parameters of the air volume, the air pressure, the pressure difference and the air permeability index during the furnace change of the hot blast furnace are subjected to data processing, the distortion of data during the furnace change is avoided, the error of the daily operation data statistics of the blast furnace is greatly reduced, and the method has important significance for the analysis of the key parameters of the blast furnace.
(2) According to the key parameter processing method during the heat exchange of the blast furnace, the opening and closing signals of the pressure equalizing valve of the hot blast furnace are used as the starting and stopping points of the furnace changing state, the furnace changing state of the blast furnace is accurately positioned in time, and the accuracy of data processing is ensured.
(3) According to the key parameter processing method during the heat exchange of the blast furnace, the last data before the furnace change state is used for data processing after the blast furnace is judged to be in the furnace change state, the furnace change state can be represented by the current latest furnace condition data, and the data processing is reasonable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides a technical solution: a key parameter processing method for a blast furnace heat exchange air furnace comprises the following steps:
the method comprises the following steps: the method comprises the steps of signal monitoring and receiving, namely respectively naming hot blast furnace pressure equalizing valves as 1# HS, 2# HS and 3# HS according to the number of hot blast furnaces (the number of the hot blast furnaces is 3 in the embodiment) configured by the blast furnaces, respectively establishing six pressure equalizing valve opening and closing signals of 1# HS/OPEN, 1# HS/CLOSED, 2# HS/OPEN, 2# HS/CLOSED, 3# HS/OPEN and 3# HS/CLOSED, monitoring and receiving the opening and closing signals of the hot blast furnace pressure equalizing valves in real time, setting the states of the hot blast furnaces by adopting the opening and closing of the pressure equalizing valves, and transmitting the real-time signals to a data processor of the blast furnaces.
Step two: judging whether the blast furnace is in a furnace changing state or not according to opening and closing position signals of a pressure equalizing valve of the blast furnace, wherein the state of the blast furnace is determined by the opening and closing position of the pressure equalizing valve, and when a blast furnace data processing center receives an OPEN signal of any one blast furnace, the OPEN of the pressure equalizing valve is indicated, and the blast furnace is in a furnace changing state of converting combustion into air supply or converting air supply into combustion; when the CLOSED signals of all the hot blast stoves are received, the pressure equalizing valves are all in the off positions, the hot blast stoves are all in the combustion or air supply state, and the blast furnace is not in the furnace changing state.
Step three: collecting key parameters in different forms according to whether the blast furnace is in a furnace change state, and collecting data in real time by using the key parameters of the blast furnace when the blast furnace is not in the furnace change state; when the blast furnace is in the furnace changing state, the last data before the furnace changing state is used as the key parameters, and the data are collected in real time until the furnace changing state is finished (namely, the CLOSED signals of all the hot blast furnaces are received).
The key parameters comprise air volume, air pressure, pressure difference and air permeability indexes, the furnace change state data processor is an MCU (microprogrammed control Unit) microprocessor, the furnace change state data processor is in signal connection with a display and a data memory, the display is used for displaying the key parameters of the blast furnace in real time, the data memory is used for recording and storing the key parameters of the blast furnace, and the furnace change state display is an LED liquid crystal display screen.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A key parameter processing method for a blast furnace heat exchange air furnace is characterized by comprising the following steps:
the method comprises the following steps: monitoring and receiving signals, naming a hot blast stove pressure equalizing valve, monitoring and receiving opening and closing position signals of the hot blast stove pressure equalizing valve in real time, setting the state of the hot blast stove by adopting the opening and closing positions of the pressure equalizing valve, and transmitting the real-time signals to a data processor of the blast furnace;
step two: judging whether the blast furnace is in a furnace changing state or not according to the opening and closing signals of the equalizing valve of the hot blast furnace;
step three: collecting key parameters in different forms according to whether the blast furnace is in a furnace change state, and collecting data in real time by using the key parameters of the blast furnace when the blast furnace is not in the furnace change state; when the blast furnace is in the furnace changing state, the key parameters use the last data before the furnace changing state, and the real-time data acquisition is adopted after the furnace changing state is finished.
2. The method for processing the key parameters of the blast furnace heat exchange air furnace according to claim 1, which is characterized in that: the state of the hot blast stove is determined by the opening and closing positions of the pressure equalizing valve, the open position signal of the pressure equalizing valve indicates that the hot blast stove is in a furnace changing state of converting combustion into air supply or converting air supply into combustion, and the closed position signal of the pressure equalizing valve indicates that the hot blast stove is in a combustion or air supply state.
3. The method for processing the key parameters of the blast furnace heat exchange air furnace according to claim 1, which is characterized in that: the key parameters comprise air volume, air pressure, pressure difference and air permeability index.
4. The method for processing the key parameters of the blast furnace heat exchange air furnace according to claim 1, which is characterized in that: the data processor is an MCU microprocessor.
5. The method for processing the key parameters of the blast furnace heat exchange air furnace according to claim 1, which is characterized in that: the data processor is in signal connection with a display and a data memory.
6. The method for processing the key parameters of the blast furnace heat exchange air furnace according to claim 5, characterized in that: the display is an LED liquid crystal display screen.
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| CN202011459315.4A CN112593032B (en) | 2020-12-11 | 2020-12-11 | Key parameter processing method for blast furnace heat exchange air furnace |
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|---|---|---|---|---|
| CN1097804A (en) * | 1993-07-21 | 1995-01-25 | 首钢总公司 | Computerized blast furnace smelting expert system method |
| CN1557972A (en) * | 2004-01-16 | 2004-12-29 | 冶金自动化研究设计院 | Optimizing control method for hybrid type blast furnace hot blast stove |
| CN1888085A (en) * | 2005-06-27 | 2007-01-03 | 天津天铁冶金集团有限公司 | No-fluctuation hot blast stove converting method |
| CN103514338A (en) * | 2012-06-15 | 2014-01-15 | 上海宝信软件股份有限公司 | Method for predicting flow amount of blast furnace gas used by hot blast stove |
| CN103924021A (en) * | 2014-03-24 | 2014-07-16 | 上海金自天正信息技术有限公司 | Blast furnace and hot blast stove constant-pressure changing system and method thereof |
| CN104134123A (en) * | 2014-07-31 | 2014-11-05 | 武钢集团昆明钢铁股份有限公司 | Blast furnace parameter data management system and method |
| CN107937645A (en) * | 2017-12-21 | 2018-04-20 | 安徽马钢自动化信息技术有限公司 | Changing-over stove operates anti-breaking wind system and method |
| CN111414024A (en) * | 2020-03-06 | 2020-07-14 | 北京和隆优化科技股份有限公司 | Coordinated furnace changing method for gas pipe network of blast furnace hot blast stove |
| CN111549193A (en) * | 2020-05-20 | 2020-08-18 | 南京南瑞继保电气有限公司 | Furnace changing method, furnace changing device and control equipment for multiple blast furnace hot blast stoves |
| CN111664470A (en) * | 2020-04-27 | 2020-09-15 | 日照钢铁控股集团有限公司 | Automatic energy-saving combustion control system and equipment for hot blast stove |
-
2020
- 2020-12-11 CN CN202011459315.4A patent/CN112593032B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097804A (en) * | 1993-07-21 | 1995-01-25 | 首钢总公司 | Computerized blast furnace smelting expert system method |
| CN1557972A (en) * | 2004-01-16 | 2004-12-29 | 冶金自动化研究设计院 | Optimizing control method for hybrid type blast furnace hot blast stove |
| CN1888085A (en) * | 2005-06-27 | 2007-01-03 | 天津天铁冶金集团有限公司 | No-fluctuation hot blast stove converting method |
| CN103514338A (en) * | 2012-06-15 | 2014-01-15 | 上海宝信软件股份有限公司 | Method for predicting flow amount of blast furnace gas used by hot blast stove |
| CN103924021A (en) * | 2014-03-24 | 2014-07-16 | 上海金自天正信息技术有限公司 | Blast furnace and hot blast stove constant-pressure changing system and method thereof |
| CN104134123A (en) * | 2014-07-31 | 2014-11-05 | 武钢集团昆明钢铁股份有限公司 | Blast furnace parameter data management system and method |
| CN107937645A (en) * | 2017-12-21 | 2018-04-20 | 安徽马钢自动化信息技术有限公司 | Changing-over stove operates anti-breaking wind system and method |
| CN111414024A (en) * | 2020-03-06 | 2020-07-14 | 北京和隆优化科技股份有限公司 | Coordinated furnace changing method for gas pipe network of blast furnace hot blast stove |
| CN111664470A (en) * | 2020-04-27 | 2020-09-15 | 日照钢铁控股集团有限公司 | Automatic energy-saving combustion control system and equipment for hot blast stove |
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