CN107563061A - The hot simulating analysis of blast furnace cooling stave - Google Patents
The hot simulating analysis of blast furnace cooling stave Download PDFInfo
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- CN107563061A CN107563061A CN201710779943.2A CN201710779943A CN107563061A CN 107563061 A CN107563061 A CN 107563061A CN 201710779943 A CN201710779943 A CN 201710779943A CN 107563061 A CN107563061 A CN 107563061A
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Abstract
The invention provides a kind of hot simulating analysis of blast furnace cooling stave, including：S1, draw blast furnace cooling stave threedimensional model and carry out mesh generation and obtain blast furnace cooling stave FEM model；S2, the addition blast furnace cooling stave FEM model each several part physical parameter；S3, the convection heat transfer' heat-transfer by convection boundary condition for applying in the blast furnace cooling stave FEM model slag crust surface, circulating water pipe internal face and furnace shell surface；S4, numerical computations are carried out, obtain the hot simulation analysis result of calculation of blast furnace cooling stave.Compared with prior art, heat exchange and energy-conservation needs of the present invention according to blast furnace cooling stave, the heat-transfer character of cooling wall is obtained by hot emulation approach, and effective information is extracted from result of calculation using visualization tool, and then for instructing the energy-conservation of blast furnace cooling stave circulation, the extension of the life of the blast furnace and maintaining blast furnace Sustainable high yield.
Description
Technical field
The present invention relates to hot simulation analysis field, especially, is related to a kind of hot simulating analysis of blast furnace cooling stave.
Background technology
As the equipment of core, the operation conditions of blast furnace are related to the peace of whole ironmaking link the most during iron-smelting process
Full degree of stability and efficiency are horizontal.Due to filling high-temperature fusant inside blast furnace and there is high-temperature hot-air to pass through, it is necessary to using recirculated water
Blast furnace wall is cooled down, to maintain the rational Temperature Distribution of blast furnace cooling stave and protect blast furnace cooling stave not broken by high temperature
It is bad, and then maintain the long-life stable operation of blast furnace.During operation of blast furnace, blast furnace cooling stave recirculated water is reasonably configured
Two big Operating parameters of flow and water temperature, the blast furnace cooling stave Temperature Distribution suitable to maintenance simultaneously save circulation water of blast furnace system
Water pump and the energy consumption of blower fan of cooling tower have great importance.If the underfed or water temperature over-high of recirculated water supply, blast furnace
Cooling wall cannot get enough coolings, by high temperature blast furnace will necessarily be caused to shift to an earlier date overhaul；If the flow of recirculated water supply
Excessive or water temperature is too low, causes blast furnace cooling stave to be subcooled, it is possible that blast furnace cooling stave internal face thickness of the slag crust increases and shadow
The energy consumption of process operation and circulation water of blast furnace system in itself is rung to rise.Therefore, it is necessary to deepen to blast furnace cooling stave cooling procedure
Understanding, the hot situation and its changing rule of blast furnace cooling stave under different recirculated water water temperatures and flow combination are grasped, and then to realize
The energy-conservation of circulation water of blast furnace system and the long-life operation of blast furnace lay the foundation.
Due to the complexity of blast furnace cooling stave and the abominable of working environment, experiment and actual measurement can not be passed through well
Technological means is advised to obtain the hot situation of the various lower blast furnace cooling staves of Circulating Water Parameters combination and its change exactly Deng known to
Rule.
Therefore, it is necessary to a kind of hot simulating analysis of blast furnace cooling stave is provided to solve the above problems.
The content of the invention
Present invention solves the technical problem that it is that the invention provides a kind of hot simulating analysis of blast furnace cooling stave, it is intended to
Relatively low cost and convenient mode obtain the hot situation of blast furnace cooling stave and its change under different recirculated water water temperatures and flow combination
Change trend, so as to the operating procedure of the circulation water of blast furnace system for instructing blast furnace cooling stave, ensureing blast furnace cooling stave safety
The operation energy consumption of circulation water of blast furnace system is saved on the premise of stable operation.
In order to solve the above technical problems, the invention provides a kind of hot simulating analysis of blast furnace cooling stave, including it is as follows
Step：
S1, draw blast furnace cooling stave threedimensional model and carry out mesh generation and obtain blast furnace cooling stave FEM model；
S2, the addition blast furnace cooling stave FEM model each several part physical parameter；
S3, apply respectively in the blast furnace cooling stave FEM model according to convective heat-transfer coefficient a reference value and by converting
Add the convection heat transfer' heat-transfer by convection boundary condition on slag crust surface, circulating water pipe internal face and furnace shell surface；
S4, numerical computations are carried out, obtain the hot simulation analysis result of calculation of blast furnace cooling stave.
Preferably, the hot simulation analysis result of calculation of the blast furnace cooling stave is included under different recirculated water water temperatures and flow combination
The Temperature Distribution of blast furnace cooling stave and the transfer fluxes size of blast furnace cooling stave different parts.
Preferably, the convection heat transfer' heat-transfer by convection perimeter strip on the slag crust surface, the circulating water pipe internal face and the furnace shell surface
Part is third boundary condition, and the third boundary condition includes the slag crust surface, the circulating water pipe internal face and institute
State convective heat-transfer coefficient value and the fluid temperature (F.T.) between furnace shell surface and fluid.
Preferably, the convective heat-transfer coefficient value is by convective heat-transfer coefficient a reference value and convective heat-transfer coefficient modulus formulas
It is common to determine.
Preferably, the fluid temperature (F.T.) includes the recirculated water water temperature, hot blast temperature in blast furnace, high temperature melting body temperature in blast furnace
Degree and blast furnace external ambient atmosphere temperature.
In addition to step preferably, after step s4,：
S5, the hot simulation result of blast furnace cooling stave is subjected to matrixing processing；
S6, according to matrix draw the hot simulation analysis result of calculation distribution map of blast furnace cooling stave；
S7, show the hot simulation analysis result of calculation of the blast furnace cooling stave with different color ranges in the distribution map.
Preferably, the abscissa of the distribution map and ordinate correspond to recirculated water water temperature and flow respectively.
Preferably, in step s 6, the recirculated water water temperature and flow are normalized, obtain the recirculated water
The normalized value of water temperature and flow, blast furnace cooling stave heat is described by independent variable of the normalized value of the recirculated water water temperature and flow
Situation.
Preferably, the hot situation of the blast furnace cooling stave includes the circulating water pipe tube wall face mean temperature, the recirculated water
Inside pipe wall face and the mean heat flux on the furnace shell surface.
Compared with correlation technique, the hot simulating analysis of blast furnace cooling stave provided by the invention, cooled down from the blast furnace
The structure and material parameter of wall itself is set out, and is fully taken into account the heat transfer feature of the blast furnace cooling stave itself, is used meter
The method of the hot simulation analysis of calculation machine, emphasis consider the two big work of the circulating water flow and temperature by the blast furnace cooling stave
Influence of the skill parameter to the hot situation of the blast furnace cooling stave and its changing rule, and to hot simulation analysis result by visualization,
The methods of normalization and Function Fitting, is analyzed and is shown, to help related personnel preferably to grasp different circulation hydraulic art bars
The changing rule of the hot situation of blast furnace cooling stave under part, so as to which pointedly optimize technique configures, ensureing the blast furnace cold
But reach the energy-saving effect of circulation water of blast furnace system optimal on the premise of wall safety and stability longevity, taken into account blast furnace long-life,
The high production capacity of the good energy-saving effect of circulation water of blast furnace system and the blast furnace.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, and drawings in the following description are only some embodiments of the present invention, common for this area
For technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings, its
In：
Fig. 1 is blast furnace cooling stave tomograph；
Fig. 2 is the schematic flow sheet of the hot simulating analysis of blast furnace cooling stave of the present invention；
Fig. 3 is blast furnace cooling stave temperature profile；
Fig. 4 is blast furnace cooling stave heat flux distribution figure；
Fig. 5 is the circulating water pipe internal face temperature averages under different recirculated water water temperatures and flow；
Fig. 6 is that circulating water pipe wall mean temperature is tied with the situation of change and fitting of recirculated water water temperature and flow normalized value
Fruit.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only the part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
All other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Referring to Fig. 1, the invention provides a kind of blast furnace cooling stave 100, the blast furnace cooling stave 100 includes：Cooling gold
Belong to wall 1, furnace shell 2, filler 3, slag crust 4, bricking 5, edge brick 6 and circulating water pipe 7.The slag crust 4 and high-temperature fusant and heat in stove
Wind is contacted, and the furnace shell 2 then contacts with external ambient atmosphere, and recirculated water is connected with the circulating water pipe 7.Heat in blast furnace from
The slag crust 4 is conducted to the bricking 5, then is transmitted to the edge brick 6, then is transmitted to the cooling metallic walls 1, then is transmitted to the circulation
Water pipe 7, and absorb and take away through the recirculated water in the circulating water pipe 7.In order to improve the service life of blast furnace, reduce blast furnace
The energy consumption of circulation and the production capacity for improving the blast furnace, hot simulation analysis have been carried out to blast furnace cooling stave.
Also referring to Fig. 2, in order to improve the service life of blast furnace, the energy consumption for reducing circulation water of blast furnace system and raising
The production capacity of the blast furnace, the invention provides a kind of hot simulation analysis side of blast furnace cooling stave for the blast furnace cooling stave 100
Method, comprise the following steps：
S1, draw blast furnace cooling stave threedimensional model and carry out mesh generation and obtain blast furnace cooling stave FEM model；
S2, the addition blast furnace cooling stave FEM model each several part physical parameter；
S3, apply respectively in the blast furnace cooling stave FEM model according to convective heat-transfer coefficient a reference value and by converting
Add the convection heat transfer' heat-transfer by convection boundary condition on the surface of slag crust 4, the internal face of the circulating water pipe 7 and the surface of the furnace shell 2；
S4, numerical computations are carried out, obtain the hot simulation analysis result of calculation of blast furnace cooling stave.
The hot simulation analysis result of calculation of blast furnace cooling stave includes the internal face mean temperature of circulating water pipe 7, described
Institute under the internal face of circulating water pipe 7, the mean heat flux on the surface of the furnace shell 2, the different recirculated water water temperatures and flow combination
State the Temperature Distribution of blast furnace cooling stave 100 and the transfer fluxes size of the different parts of the blast furnace cooling stave 100.
Also referring to Fig. 3, temperature is not from the inside to surface it can be seen from the temperature profile of the blast furnace cooling stave 100
It is disconnected to reduce.
Also referring to Fig. 4, the blast furnace cold it can be seen from the heat flux distribution figure of the blast furnace cooling stave 100
But the transfer fluxes size of the different parts of wall 100.
From the blast furnace cooling stave 100 structure and material parameter of itself, the blast furnace cooling stave is fully taken into account
The 100 heat transfer features of itself, using the method for computer craze simulation analysis, emphasis is considered by the blast furnace cooling stave
100 circulating water flow and two big technological parameter of temperature are to the 100 hot situation of blast furnace cooling stave and its changing rule
Influence, so as to which pointedly optimize technique configures, reach described on the premise of the safety and stability of blast furnace cooling stave 100 is ensured
The energy-saving effect of circulation water of blast furnace system optimal.
The convection heat transfer' heat-transfer by convection boundary condition on the surface of slag crust 4, the internal face of the circulating water pipe 7 and the surface of the furnace shell 2 is
Third boundary condition, the third boundary condition include the surface of slag crust 4, the internal face of the circulating water pipe 7 and described
The temperature value of convective heat-transfer coefficient value and fluid between the surface of furnace shell 2 and fluid.The third boundary condition is to specify table
The fluid temperature (F.T.) of convective heat-transfer coefficient value and surrounding between face and surrounding fluid.
The convective heat-transfer coefficient value is jointly true by convective heat-transfer coefficient a reference value and convective heat-transfer coefficient modulus formulas
It is fixed.
The calculation formula of the convective heat-transfer coefficient value of the circulating water pipe internal face isIn formula
H, d and u be respectively the internal face of the circulating water pipe 7 in the blast furnace cooling stave FEM model convective heat-transfer coefficient value,
The caliber of circulating water pipe 7 and the recirculated water flow velocity；h0、d0And u0Corresponding to respectively described convective heat-transfer coefficient a reference value
Convective heat-transfer coefficient value, the caliber of the circulating water pipe 7 and the recirculated water flow velocity of the internal face of circulating water pipe 7；The slag
The calculation formula of the convective heat-transfer coefficient value of the convection heat transfer' heat-transfer by convection boundary condition on the surface of skin 4 isH and u difference in formula
Hot blast flow velocity in convective heat-transfer coefficient value and blast furnace for the surface of slag crust 4 in the blast furnace cooling stave FEM model, h0And u0
The convective heat-transfer coefficient value on the surface of slag crust 4 and the hot blast flow velocity respectively corresponding to convective heat-transfer coefficient a reference value；The stove
The calculation formula of the convective heat-transfer coefficient value of the convection heat transfer' heat-transfer by convection boundary condition on the surface of shell 2 isH and u difference in formula
Convective heat-transfer coefficient value and the blast furnace external environment condition for the surface of the furnace shell 2 in the blast furnace cooling stave FEM model
Big gas velocity, h0And u0The convective heat-transfer coefficient value on the surface of furnace shell 2 and institute respectively corresponding to convective heat-transfer coefficient a reference value
State blast furnace external ambient atmosphere flow velocity.Convection heat transfer' heat-transfer by convection reference value can derive from other existing document reports, experimental data,
Experience estimate etc..
The fluid temperature (F.T.) includes the recirculated water water temperature, the hot blast temperature, the high-temperature fusant temperature and institute
State blast furnace external ambient atmosphere temperature.
After step s4, the hot simulating analysis of blast furnace cooling stave also includes to the hot simulation analysis of the blast furnace cooling stave
Result of calculation carries out visual step, specific as follows：
S5, the hot simulation result of blast furnace cooling stave is subjected to matrixing processing；
S6, according to matrix draw the hot simulation analysis result of calculation distribution map of blast furnace cooling stave, the abscissa of the distribution map
Correspond to recirculated water water temperature and flow respectively with ordinate；
The recirculated water water temperature and flow are normalized, obtain the normalization of the recirculated water water temperature and flow
Value, the hot situation of blast furnace cooling stave, the blast furnace cooling are described by independent variable of the normalized value of the recirculated water water temperature and flow
The hot situation of wall includes being averaged for the tube wall face mean temperature of circulating water pipe 7, the internal face of the circulating water pipe 7 and the surface of the furnace shell 2
Heat flow density.
The value vi of each generic operation variables A is mapped to section [0,1] by the normalized by normalizing formula, is returned
One, which changes formula, isA in formulaminAnd AmaxRespectively performance variable A minimum value and maximum.
Also referring to Fig. 6, after normalized, under same abscissa, the circulating water flow or water temperature list
The mean temperature situation of change of the internal face of circulating water pipe 7 when solely changing, and data process of fitting treatment has been carried out to variation tendency.
Show that the relative rising of the circulating water flow or the relative drop of the recirculated water water temperature each contribute to follow described in reduction in Fig. 6
The mean temperature of the internal face of ring water pipe 7, but in the range of investigating, the circulating water flow is to the inwall of circulating water pipe 7
The sensitivity that face mean temperature influences is higher than the recirculated water water temperature.
Blast furnace operating personnel can intuitively know the adjustment recirculated water water temperature and flow to the description blast furnace cooling
The influence relation and influence sensitivity of the hot situation of wall, facilitate blast furnace operating to carry out the regulation of the recirculated water water temperature and flow,
Preferably to take into account the energy-conservation of the circulation water of blast furnace system, the service life of blast furnace and the production capacity of blast furnace.
S7, show the hot simulation analysis result of calculation of the blast furnace cooling stave with different color ranges in the distribution map.
Please refer to fig. 5, being given in Fig. 5 based on result of calculation matrix value, not circulating water flow and temperature are given
The distribution situation of the internal face mean temperature of circulating water pipe 7 under combination, it is shown that under the different recirculated water supply conditions
The internal face mean temperature of circulating water pipe 7, with the increase of the circulating water flow or the reduction of the recirculated water water temperature, institute
The wall internal face mean temperature of circulating water pipe 7 is stated constantly to decline.
By being visualized to the hot simulation result of the blast furnace cooling stave, the hot situation of blast furnace cooling stave is set to show more
To be directly perceived, blast furnace operating personnel preferably can adjust the recirculated water water gentle stream according to the hot situation of the blast furnace cooling stave
Amount, preferably to take into account the saving of the circulation water of blast furnace system, the service life of the blast furnace and the production capacity of the blast furnace.
The hot simulating analysis of blast furnace cooling stave that the present embodiment provides, based on industrial actual conditions, is mainly relied on
The hot emulation approach of blast furnace cooling stave 100, avoids high cost and numerous and diverse experimental test process, reduces the reason of complexity as far as possible
By analytical derivation, there is outstanding advantages of convenient and swift, application cost is low and problem analysis is comprehensive.The present invention is more laid particular emphasis on
The hot situation feature of blast furnace cooling stave 100 itself and its with the recirculated water water temperature and the trend of changes in flow rate, application process
Dependence to external condition is less, thus is more easily performed.
Compared with correlation technique, the hot simulating analysis of blast furnace cooling stave provided by the invention, cooled down from the blast furnace
The structure and material parameter of wall 100 itself is set out, and fully takes into account the blast furnace cooling stave 100 heat transfer feature of itself,
Using the method for computer craze simulation analysis, emphasis consider by the recirculated water water temperature of the blast furnace cooling stave 100 and
Influence of the two big technological parameter of flow to the hot situation of the blast furnace cooling stave and its changing rule, and hot simulation analysis result is led to
The methods of crossing visualization, normalization and Function Fitting is analyzed and shown, is followed with helping related personnel preferably to grasp difference
The changing rule of the hot situation of blast furnace cooling stave under the conditions of ring hydraulic art, so as to which pointedly optimize technique configures, ensureing
Reach the energy-saving effect of the circulation water of blast furnace system optimal on the premise of the safety and stability longevity of blast furnace cooling stave 100, it is simultaneous
The long-life of the blast furnace, the high production capacity of the blast furnace and the good energy-saving effect of circulation water of blast furnace system are cared for.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of hot simulating analysis of blast furnace cooling stave, it is characterised in that comprise the following steps：
S1, draw blast furnace cooling stave threedimensional model and carry out mesh generation and obtain blast furnace cooling stave FEM model；
S2, the addition blast furnace cooling stave FEM model each several part physical parameter；
S3, according to convective heat-transfer coefficient a reference value and by converting in the blast furnace cooling stave FEM model apply slag respectively
The convection heat transfer' heat-transfer by convection boundary condition in epidermis face, circulating water pipe internal face and furnace shell surface；
S4, numerical computations are carried out, obtain the hot simulation analysis result of calculation of blast furnace cooling stave.
2. the hot simulating analysis of blast furnace cooling stave according to claim 1, it is characterised in that the blast furnace cooling stave heat
Simulation analysis result of calculation includes the Temperature Distribution and blast furnace cold of blast furnace cooling stave under different recirculated water water temperatures and flow combination
But the transfer fluxes size of wall different parts.
3. the hot simulating analysis of blast furnace cooling stave according to claim 1, it is characterised in that the slag crust surface, institute
The convection heat transfer' heat-transfer by convection boundary condition for stating circulating water pipe internal face and the furnace shell surface is third boundary condition, the 3rd class side
Boundary's condition includes the convection heat transfer' heat-transfer by convection system between the slag crust surface, the circulating water pipe internal face and the furnace shell surface and fluid
Numerical value and fluid temperature (F.T.).
4. the hot simulating analysis of blast furnace cooling stave according to claim 3, it is characterised in that the convective heat-transfer coefficient
Value is determined jointly by convective heat-transfer coefficient a reference value and convective heat-transfer coefficient modulus formulas.
5. the hot simulating analysis of blast furnace cooling stave according to claim 3, it is characterised in that the fluid temperature (F.T.) includes
Hot blast temperature in the recirculated water water temperature, blast furnace, high-temperature fusant temperature and blast furnace external ambient atmosphere temperature in blast furnace.
6. the hot simulating analysis of blast furnace cooling stave according to claim 1, it is characterised in that after step s4, also
Including step：
S5, the hot simulation result of blast furnace cooling stave is subjected to matrixing processing；
S6, according to matrix draw the hot simulation analysis result of calculation distribution map of blast furnace cooling stave；
S7, show the hot simulation analysis result of calculation of the blast furnace cooling stave with different color ranges in the distribution map.
7. the hot simulating analysis of blast furnace cooling stave according to claim 6, it is characterised in that the horizontal seat of the distribution map
Mark and ordinate correspond to recirculated water water temperature and flow respectively.
8. the hot simulating analysis of blast furnace cooling stave according to claims 7, it is characterised in that in step s 6, right
The recirculated water water temperature and flow are normalized, and the normalized value of the recirculated water water temperature and flow are obtained, with described
The normalized value of recirculated water water temperature and flow is that independent variable describes the hot situation of blast furnace cooling stave.
9. the hot simulating analysis of blast furnace cooling stave according to claims 8, it is characterised in that the blast furnace cooling stave
Hot situation includes the circulating water pipe tube wall face mean temperature, the circulating water pipe internal face and the evenly heat on the furnace shell surface
Current density.
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| CN111026207A (en) * | 2019-12-26 | 2020-04-17 | 湘潭大学 | Blast furnace circulating cooling water flow adjusting and controlling method |
| CN113444851A (en) * | 2021-06-28 | 2021-09-28 | 中冶赛迪重庆信息技术有限公司 | Blast furnace cooling wall water temperature difference detection system, method, medium and electronic terminal |
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| CN101319256A (en) * | 2007-06-05 | 2008-12-10 | 同济大学 | Intelligent monitoring method for cooling wall of blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111026207A (en) * | 2019-12-26 | 2020-04-17 | 湘潭大学 | Blast furnace circulating cooling water flow adjusting and controlling method |
| CN111026207B (en) * | 2019-12-26 | 2021-04-13 | 湘潭大学 | Blast furnace circulating cooling water flow adjusting and controlling method |
| CN113444851A (en) * | 2021-06-28 | 2021-09-28 | 中冶赛迪重庆信息技术有限公司 | Blast furnace cooling wall water temperature difference detection system, method, medium and electronic terminal |
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