CN203240767U - Hot blast stove combustion optimal control system - Google Patents
Hot blast stove combustion optimal control system Download PDFInfo
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- CN203240767U CN203240767U CN201320285843.1U CN201320285843U CN203240767U CN 203240767 U CN203240767 U CN 203240767U CN 201320285843 U CN201320285843 U CN 201320285843U CN 203240767 U CN203240767 U CN 203240767U
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 238000004891 communication Methods 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
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Abstract
The utility model provides a hot blast stove combustion optimal control system. The system comprises a hot blast stove (1), a DCS (2), an OPC uploading port (3), an OPC downloading port (4) and an optimal controller (5). Operating parameters of the hot blast stove in the DCS is read by the hot blast stove combustion optimal control system through the OPC uploading port. An optimal coal-air ratio under the current working condition is calculated by the optimal controller according to the actual operational condition. The optimized control parameters are sent to the DCS through the OPC downloading port so that closed loop and optimal control of the hot blast stove can be achieved. According to the hot blast stove combustion optimal control system, the hot blast stove is prevented from being influenced by the negative factors of coal and air pressure frequency fluctuation, the change of gas calorific values and the like, so that the arch top temperature of the hot blast stove is stabilized to a set value and the stable operation and the economical combustion of the hot blast stove are achieved.
Description
Technical field
The utility model relates to computer control system, specifically, relates to a kind of Combustion of Hot Air Furnace Optimal Control System.
Background technology
Hot-blast stove is the important auxiliary device of blast furnace iron-making process, is the heat exchanger of heat blowing, and modern blast furnace generally adopts regenerative hot blast stove.The quality of hot stove furnace operating directly affects the height of wind-warm syndrome, because gas pressure and calorific value are continuous variations, need constantly to adjust the quantity delivered of air and coal gas in order to reach optimal combustion state, bring certain difficulty and larger labour intensity for like this hot stove furnace operating, if air capacity is not enough simultaneously, burning is insufficient, its efficiency of combustion is not high certainly, and also the discharge quality of direct relation hot-blast stove coal smoke causes severe contamination to environment; But the heat that air too much also can make smoke evacuation take away increases, and equally also is uneconomic.The burning optimization of hot-blast stove mainly relies on the commissioning staff constantly to observe the variation of dome temperature at present, and very fast if current dome temperature rises, rule of thumb judgement thinks that present proportioning is suitable, does not then adjust; If vault rises slowly or descends, rule of thumb judge and think the proportioning imbalance, at this moment operating personnel just can adjust the size of air or coal gas amount, to obtain the best coal-air ratio method of operation, this control mode wastes time and energy, this burning method of adjustment can not according to the variation of service condition, be carried out automatically adjusting in real time control program and make hot-blast stove be in the optimum operation situation, thereby cause the wasting of resources simultaneously.
Based on this, how to invent a kind of Combustion of Hot Air Furnace Optimal Control System, hot-blast stove can be moved under various gas pressures and calorific value variation automatically, and reach maximum combustion efficient, improve wind pushing temperature, be the problem that the utility model mainly solves.
Summary of the invention
The utility model has overcome the deficiencies in the prior art, proposes a kind of Combustion of Hot Air Furnace Optimal Control System, and this system can automatically operation under different gas pressures and calorific value variation.It has changed hot-blast stove and substantially has been in for a long time manually-operated situation, has greatly improved the operational efficiency of hot-blast stove, has improved wind pushing temperature, has reduced personnel cost, and the system automation degree is high, good reliability.
In order to realize above-mentioned technical problem, the utility model is achieved by the following technical solutions: a kind of Combustion of Hot Air Furnace Optimal Control System comprises that hot-blast stove (1), DCS control system (2), OPC upload interface (3), OPC download interface (4), optimal controller (5).System uploads the operational factor that interface reads hot-blast stove in the DCS control system by OPC, be stored in the optimal controller, set up Combustion of Hot Air Furnace effect Mathematical Modeling, calculate the best coal-air ratio under the current working and select the optimal control mode according to practical operation situation by optimal controller, give closed loop and the optimal control that the DCS control system realizes hot-blast stove with the control parameter after optimizing by the OPC download interface.
Further, optimal controller in the Combustion of Hot Air Furnace Optimal Control System (5) adopts embedded controller to realize, is made of PID controller and self-optimizing control device two parts.The setting value of supposing the hot-blast stove dome temperature is S, and current dome temperature instantaneous value is T, and Select Error is e.When dome temperature instantaneous value T during greater than Select Error e, adopts the PID controller with setting value S difference, quick flat makes the dome temperature of hot-blast stove control near the setting value quietly; When dome temperature instantaneous value T during less than or equal to Select Error e, adopts the self-optimizing control device with setting value S difference, continue to optimize coal-air ratio, make the dome temperature of hot-blast stove progressively control to setting value, realize stable operation and the economical combustion of hot-blast stove.
Further, for guaranteeing rapidity and the reliability of communication between DCS control system (2) and the optimal controller (5), system has adopted the OPC communication modes, comprises that mainly OPC download interface and OPC upload interface two parts; OPC uploads interface and is mainly used in optimal controller (5) and reads data in the DCS control system (2), the OPC download interface is mainly used in optimal controller (5) and gives DCS control system (2) the control data of having optimized, and by DCS control system (2) hot-blast stove (1) is realized optimal control.
Compared with prior art, the utlity model has following function and advantage:
(1) system has solved and how to have made Combustion of Hot Air Furnace efficient reach that maximum problem---the Combustion of Hot Air Furnace Optimal Control System can greatly improve wind pushing temperature under the existence conditions, improves output, saves cost;
(2) system has improved the stability of hot-blast stove operation;
(3) system has improved the automatic control rate, has reduced workman's labour intensity, and production efficiency significantly improves.
After reading by reference to the accompanying drawings the detailed description of the utility model embodiment, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is a kind of Combustion of Hot Air Furnace Optimal Control System block diagram that the utility model proposes.
Fig. 2 is a kind of Combustion of Hot Air Furnace Optimal Control System control model schematic diagram that the utility model proposes.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in more detail.
Embodiment one, and referring to shown in Figure 1, present embodiment is a kind of Combustion of Hot Air Furnace Optimal Control System block diagram;
Comprise that hot-blast stove (1), DCS control system (2), OPC upload interface (3), OPC download interface (4), optimal controller (5).System uploads the operational factor that interface (3) reads hot-blast stove (1) in the DCS control system (2) by OPC, and the operational factor of hot-blast stove is stored in the optimal controller (5), judge hot-blast stove ruuning situation by hot-blast stove dome temperature and EGT, then according to the variation of hot-blast stove major control target component such as dome temperature setting value, judge and adopt PID control or self-optimizing control.Calculate the concrete best coal-air ratios of optimizing under numerical value and the current working such as gas valve aperture, air valve aperture, blower motor aperture of hot-blast stove operation according to practical operation situation by optimal controller, and the control parameter after will optimizing is given DCS control system (2) to hot-blast stove (1) realization closed loop and optimal control by OPC download interface (4).
Embodiment two, and referring to shown in Figure 2, present embodiment is a kind of Combustion of Hot Air Furnace Optimal Control System control model schematic diagram;
Set Select Error e=5%, the control step is as follows: (one) temperature uphill process: the first step, input according to actual needs hot-blast stove dome temperature setting value 1 by operating personnel; Second step, actual temperature and design temperature difference are judged by system, if difference is during greater than Select Error e, system adopts PID control, and quick flat makes the dome temperature of hot-blast stove rise near the setting value quietly, if actual temperature and design temperature difference are during less than Select Error e, then system adopts rolling self-optimizing control, take the thermal efficiency of hot-blast stove as Optimization goal, passes through adaptive searching optimal algorithm, continue to optimize coal-air ratio, finally make the dome temperature of hot-blast stove be stabilized in setting value.(2) drop in temperature process: the first step, input according to actual needs hot-blast stove dome temperature value setting value 2 by operating personnel; Second step, actual temperature and design temperature difference are judged by system, if difference is during greater than Select Error e, then system adopts PID control, and quick flat makes the hot-blast stove dome temperature drop near the setting value quietly, if actual temperature and design temperature difference are during less than Select Error e, then system adopts self-optimizing control, take the thermal efficiency of hot-blast stove as Optimization goal, passes through adaptive searching optimal algorithm, continue to optimize coal-air ratio, finally make the dome temperature of hot-blast stove be stabilized in setting value.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (3)
1. blast furnace and hot blast cupola combustion Optimal Control System, comprise hot-blast stove (1), DCS control system (2), OPC uploads interface (3), OPC download interface (4), optimal controller (5), it is characterized in that: system uploads the operational factor that interface (3) reads hot-blast stove (1) in the DCS control system (2) by OPC, calculate best coal-air ratio under the current working by optimal controller according to practical operation situation, and the control parameter after will optimizing is given DCS control system (2) by OPC download interface (4) hot-blast stove (1) is realized closed loop and optimal control.
2. a kind of Combustion of Hot Air Furnace Optimal Control System according to claim 1 is characterized in that: described optimal controller (5) adopts embedded controller to realize, is made of PID controller and self-optimizing control device two parts.
3. a kind of Combustion of Hot Air Furnace Optimal Control System according to claim 1, it is characterized in that: for guaranteeing rapidity and the reliability of communication between DCS control system (2) and the optimal controller (5), adopt the OPC communication modes, comprise that OPC download interface and OPC upload interface two parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320285843.1U CN203240767U (en) | 2013-05-23 | 2013-05-23 | Hot blast stove combustion optimal control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320285843.1U CN203240767U (en) | 2013-05-23 | 2013-05-23 | Hot blast stove combustion optimal control system |
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| Publication Number | Publication Date |
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| CN203240767U true CN203240767U (en) | 2013-10-16 |
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| CN201320285843.1U Expired - Fee Related CN203240767U (en) | 2013-05-23 | 2013-05-23 | Hot blast stove combustion optimal control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607600A (en) * | 2016-01-19 | 2016-05-25 | 青岛科技大学 | Method for one-key turning on/off of chemical engineering equipment |
| CN114265313A (en) * | 2021-12-23 | 2022-04-01 | 河钢数字信达(邯郸)科技有限公司 | Air valve adjusting and optimizing strategy method based on waste gas temperature rising curve |
| CN114292975A (en) * | 2021-12-31 | 2022-04-08 | 四川德胜集团钒钛有限公司 | Combustion control method for blast furnace hot blast stove |
-
2013
- 2013-05-23 CN CN201320285843.1U patent/CN203240767U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607600A (en) * | 2016-01-19 | 2016-05-25 | 青岛科技大学 | Method for one-key turning on/off of chemical engineering equipment |
| CN114265313A (en) * | 2021-12-23 | 2022-04-01 | 河钢数字信达(邯郸)科技有限公司 | Air valve adjusting and optimizing strategy method based on waste gas temperature rising curve |
| CN114265313B (en) * | 2021-12-23 | 2024-02-13 | 河钢数字信达(邯郸)科技有限公司 | Air valve optimization strategy method based on exhaust gas temperature rising curve |
| CN114292975A (en) * | 2021-12-31 | 2022-04-08 | 四川德胜集团钒钛有限公司 | Combustion control method for blast furnace hot blast stove |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20140523 |