CN102819250A - Unit load optimum distribution method of oxygen manufactory - Google Patents
Unit load optimum distribution method of oxygen manufactory Download PDFInfo
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- CN102819250A CN102819250A CN2012102827344A CN201210282734A CN102819250A CN 102819250 A CN102819250 A CN 102819250A CN 2012102827344 A CN2012102827344 A CN 2012102827344A CN 201210282734 A CN201210282734 A CN 201210282734A CN 102819250 A CN102819250 A CN 102819250A
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- load
- unit
- optimized distribution
- optimum distribution
- oxygen
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- 238000009826 distribution Methods 0.000 title claims abstract description 48
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000001301 oxygen Substances 0.000 title claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 229910052786 argon Inorganic materials 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000005457 optimization Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000007619 statistical method Methods 0.000 abstract 2
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010033307 Overweight Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000020825 overweight Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a unit load optimum distribution method of an oxygen manufactory; the method comprises the following steps that the maximum loads, the minimum loads, the highest load rising speed and the highest load dropping speed of all oxygen generation units are acquired; statistical analysis is conducted on the cost data, amount of oxygen and ambient temperature of the oxygen manufactory, a cost characteristic curve at different ambient temperatures is worked out; the statistical analysis is conducted on working conditions in summer and in winter; the statistical load precision is configured to be 1 percent of a measuring range; the mean value of power consumption in each measuring range is adopted; the stability and the safety indicators of the units are calculated according to the real-time data of the units, and whether the units participate in the load optimum distribution or not is worked out by integrating marks for participating in the load optimum distribution which are manually set; and the characteristic parameters, cost characteristic curves, ambient temperature and signals for participating in the load optimum distribution of the units are read, load optimum distribution is carried out, and on-line optimum distribution results and offline optimum distribution results are output. The optimum distribution method has the characteristics of safety, economy and quickness.
Description
Technical field
The present invention relates to the method for each unit load optimized distribution of a kind of oxyen manutactory, be used for each oxygenerator group optimized distribution of loading.
Background technology
Modern steel factory is generally accomplished the production work of oxygen, nitrogen and argon gas together by many oxygenerator groups; Each oxygenerator pool-size, load responding speed, the corresponding cost of each output all are different; Even the unit of identical configuration, performance also can be different after operation/maintenance a period of time; And the oxygenerator group is the power consumption rich and influential family in steel plant, is example with the Baosteel Branch's, takies the electric energy about 17%.It is exactly the load of confirming each unit that the level of factory unit load distributes, and makes economy optimum.
External oxygenerator capacity is generally 1～1.1 with 1,000,000 tons of steel ratios, and the result shows domestic present ratio 1.3～1.5 more suitable according to investigations, and this just explains from total volume is that certain allotment space is arranged.
The oxygenerator that any reason causes is shut down, and in resuming production, oxygen and nitrogen can reach design objective and see off in 2 hours; But argon gas recovers generally to arrive about 10 hours; Therefore reduce the fluctuation of industry control, if unit is unstable, then the load instruction remains unchanged as far as possible; Avoid in the purifier handoff procedure, carrying out Load Regulation, can cause the fluctuation of device operating condition when switching, so do not implement varying load operation in forward and backward 10 minutes all pressing because of purifier; Pressure tower, following tower liquid oxygen level, product oxygen purity, product nitrogen purity, argon cut amount, straight argon purity were judging point under setting air advanced, and control system/people trade union with these parameters controls within the specific limits; In case wherein any parameter drift-out, operation will suspend, and wait for after the subset control flow journey is adjusted to straggling parameter normally and could regulate load.
From technology, there is mutual restriction relation as the heat eliminating medium of oxygen and argon gas in nitrogen between three kinds of gases.After oxygen has assigned; Because nitrogen and argon gas generally can be not short, the ratio that each oxygenerator group is born nitrogen is consistent with the ratio of bearing oxygen, and argon gas is because relative oxygen of economic benefit and nitrogen are high a lot; So produce by maximum capacity, these steel plant are inconsumable takes out.
At present the major side of introducing about oxygenerator group load optimized distribution technology overweights optimized Algorithm, and to the cost behavior curve carry out process of fitting treatment satisfying the algorithm requirement, require cost curves can be little etc. like some classic optimisation algorithms.And characteristic accurately the obtaining of cost is the basic and crucial of optimized distribution of loading, and carrying out process of fitting treatment certainly will influence its authenticity, and then influences its economy.
Summary of the invention
The object of the invention is to provide a kind of oxyen manutactory unit load optimized distribution method, and it has the characteristics of security, economy, rapidity.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of oxyen manutactory unit load optimized distribution method comprises the steps:
(1) obtains the following characterisitic parameter of each oxygenerator group: load maximal value, load minimum value, maximum loading rate and maximum load down speed;
(2) oxyen manutactory's cost data, oxygen making amount and environment temperature are carried out statistical study; Obtain the cost behavior curve under the varying environment temperature; Divide the statistical study respectively of summer condition and winter condition, statistics load precision is configured to 1% range ability, and the power consumption of each range ability is averaged;
(3) according to the real time data of unit, computer set stability indicator and safety indexes;
(4) calculate unit according to set steady property index, safety indexes and the artificial participation load optimized distribution mark of setting and whether participate in the load optimized distribution;
(5) read unit characterisitic parameter, cost behavior curve, environment temperature and participation load optimized distribution signal, the optimized distribution of loading, output on-line optimization allocation result and offline optimization allocation result; Change step (3) and carry out the load optimized distribution of a new round.
In the above-mentioned steps (3); Set steady property determination of index mode is: judge whether it is in the purifier change action 10 minutes; If it is for denying; And air advances down pressure tower, product oxygen purity, product nitrogen purity, argon cut amount, straight argon purity whether all in specialized range, judges set steady this moment, otherwise unstable.
In the above-mentioned steps (3), unit safety property determination of index mode is: judge whether to exist air compressor machine to vibrate big alerting signal, represent that then unit is dangerous if exist, otherwise the expression unit safety.
In the above-mentioned steps (4), the mode whether computer set participates in the load optimized distribution is: judge whether set steady property index, safety indexes and the artificial participation load optimized distribution mark of setting be all up to standard, three's just participation all up to standard distribution.
In the above-mentioned steps (5); After output on-line optimization allocation result and the offline optimization allocation result; Also off-line distribute one-time calculation go out total load from minimum value to the maximal value situation under the Optimal Load of each unit suggestion so that the slow oxygenerator group of dynamic responding speed is adjusted to target load.
After adopting such scheme; The present invention has considered the influence of outside uncontrollable factors such as environment temperature to it in the obtaining of cost behavior curve; Branch Various Seasonal operating mode is obtained, and improves its accuracy with representative, and takes all factors into consideration multiple constraint conditions such as economy, varying load speed; The present invention simultaneously adopts dynamic programming algorithm to handle, and this algorithm need not match to the cost behavior curve can carry out computing.The invention has the beneficial effects as follows: owing to considered the security and the stability of unit, divided working status carries out non-process of fitting treatment to the cost behavior curve, more near actual conditions, more can reduce overall power consumption.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is the schematic diagram calculation of set steady property index among the present invention;
Fig. 3 is the schematic diagram calculation of unit safety property index among the present invention;
Fig. 4 judges among the present invention whether unit participates in the realization schematic diagram of load optimized distribution.
Embodiment
Below will combine accompanying drawing, technical scheme of the present invention will be elaborated.
As shown in Figure 1, the present invention provides a kind of oxyen manutactory unit load optimized distribution method, comprises the steps:
(1) obtains the following characterisitic parameter of each oxygenerator group: load maximal value, load minimum value, maximum loading rate and maximum load down speed;
(2) oxyen manutactory's cost data, oxygen making amount and environment temperature are carried out statistical study; Obtain the cost behavior curve under the varying environment temperature; The branch summer condition (environment temperature>15 degree) and winter condition (environment temperature 15 degree) statistical study respectively; Statistics load precision is configured to 1% range ability, and the power consumption of each range ability is averaged;
(3) according to the real time data of unit, computer set stability indicator and safety indexes;
Set steady property determination of index is mainly considered following parameter: whether in purifier change action 10 minutes, if, represent that then unit is unstable, otherwise the expression set steady; Consider respectively that also air advances down pressure tower, product oxygen purity, product nitrogen purity, argon cut amount, straight argon purity whether all in specialized range; Above Several Parameters, all output is stable, representes that just unit is stable at this moment, in case there is a parameter defective, representes that then unit is unstable.
In the present embodiment; Concrete implementation can cooperate shown in Figure 2; " purifier switched in 10 minutes " passes through logic NOT, carries out logic and operation with " air advances following pressure tower in specialized range ", " following tower liquid oxygen level is in specialized range ", " product oxygen purity is in specialized range ", " product nitrogen purity is in specialized range ", " argon cut amount is in specialized range ", " straight argon purity is in specialized range ".
Whether unit safety property index depends on has air compressor machine to vibrate big alerting signal; Represent that then unit is dangerous if having; Otherwise expression unit safety; Specifically see Fig. 3, be installed on one of four vibration transducers on the air compressor machine of oxygenerator group and surpass the upper limit of setting and think that then unit is dangerous that the upper limit is then thought safety on all being lower than.
(4) calculate unit according to set steady property index, unit safety property index and the artificial participation load optimized distribution mark of setting and whether participate in the load optimized distribution;
Implementation as shown in Figure 4 is carried out logic and operation with " set steady property index " and " unit safety property index ", " the artificial participation load optimized distribution mark of setting ", and the three is and very just participates in distribution.Signal on operation screen, can be revised as true or vacation decides this unit whether to participate in the load optimized distribution " the artificial participation load optimized distribution mark of setting ".
(5) adopt dynamic programming algorithm to read unit characterisitic parameter, cost behavior curve, environment temperature and participation load optimized distribution signal; Carry out the optimized distribution of level of factory load; Output on-line optimization allocation result and offline optimization allocation result; Off-line distribute one-time calculation go out total load from minimum value to the maximal value situation under the Optimal Load of each unit suggestion so that the slow oxygenerator group of dynamic responding speed is adjusted to target load.
This step can be changeed the load optimized distribution that step (3) is carried out a new round after accomplishing.
Above embodiment is merely explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of on the technical scheme basis, being done all falls within the protection domain of the present invention.
Claims (5)
1. oxyen manutactory's unit load optimized distribution method is characterized in that comprising the steps:
(1) obtains the following characterisitic parameter of each oxygenerator group: load maximal value, load minimum value, maximum loading rate and maximum load down speed;
(2) oxyen manutactory's cost data, oxygen making amount and environment temperature are carried out statistical study; Obtain the cost behavior curve under the varying environment temperature; Divide the statistical study respectively of summer condition and winter condition, statistics load precision is configured to 1% range ability, and the power consumption of each range ability is averaged;
(3) according to the real time data of unit, computer set stability indicator and safety indexes;
(4) calculate unit according to set steady property index, safety indexes and the artificial participation load optimized distribution mark of setting and whether participate in the load optimized distribution;
(5) read unit characterisitic parameter, cost behavior curve, environment temperature and participation load optimized distribution signal, the optimized distribution of loading, output on-line optimization allocation result and offline optimization allocation result; Change step (3) and carry out the load optimized distribution of a new round.
2. a kind of oxyen manutactory as claimed in claim 1 unit load optimized distribution method; It is characterized in that: in the said step (3); Set steady property determination of index mode is: judge whether it is in the purifier change action 10 minutes, if it is not for, and air advances down pressure tower, product oxygen purity, product nitrogen purity, argon cut amount, straight argon purity whether all in specialized range; Judge set steady this moment, otherwise unstable.
3. a kind of oxyen manutactory as claimed in claim 1 unit load optimized distribution method; It is characterized in that: in the said step (3); Unit safety property determination of index mode is: judge whether to exist air compressor machine to vibrate big alerting signal; If exist and represent that then unit is dangerous, otherwise the expression unit safety.
4. a kind of oxyen manutactory as claimed in claim 1 unit load optimized distribution method; It is characterized in that: in the said step (4); The mode whether computer set participates in the load optimized distribution is: judge whether set steady property index, safety indexes and the artificial participation load optimized distribution mark of setting be all up to standard, three's just participation all up to standard distribution.
5. a kind of oxyen manutactory as claimed in claim 1 unit load optimized distribution method; It is characterized in that: in the said step (5); After output on-line optimization allocation result and the offline optimization allocation result; Also off-line distribute one-time calculation go out total load from minimum value to the maximal value situation under the Optimal Load of each unit suggestion so that the slow oxygenerator group of dynamic responding speed is adjusted to target load.
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| CN201210282734.4A CN102819250B (en) | 2012-08-10 | 2012-08-10 | Unit load optimum distribution method of oxygen manufactory |
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| CN201210282734.4A CN102819250B (en) | 2012-08-10 | 2012-08-10 | Unit load optimum distribution method of oxygen manufactory |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063872A (en) * | 2006-04-25 | 2007-10-31 | 神马科技公司 | System for optimizing oxygen in a boiler |
| US20090238234A1 (en) * | 2006-09-18 | 2009-09-24 | Manfred Schubert | Method for operating a melt-metallurgic furnace, and furnace |
| CN102444784A (en) * | 2011-11-14 | 2012-05-09 | 上海金自天正信息技术有限公司 | Pressure control system for steel enterprise steam pipe network based on dynamic matrix control |
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- 2012-08-10 CN CN201210282734.4A patent/CN102819250B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063872A (en) * | 2006-04-25 | 2007-10-31 | 神马科技公司 | System for optimizing oxygen in a boiler |
| US20090238234A1 (en) * | 2006-09-18 | 2009-09-24 | Manfred Schubert | Method for operating a melt-metallurgic furnace, and furnace |
| CN102444784A (en) * | 2011-11-14 | 2012-05-09 | 上海金自天正信息技术有限公司 | Pressure control system for steel enterprise steam pipe network based on dynamic matrix control |
Non-Patent Citations (2)
| Title |
|---|
| 葛荣彬: "燃气—蒸汽联合循环电厂机组组合优化及负荷经济分配研究", 《中国优秀硕士学位论文全文数据库》, 10 July 2009 (2009-07-10) * |
| 邓努波: "电站负荷最佳运行分配的研究", 《中国优秀硕士学位论文全文数据库》, 4 November 2003 (2003-11-04) * |
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