CN111599415A - Blast furnace digital system implementation method based on computer simulation - Google Patents
Blast furnace digital system implementation method based on computer simulation Download PDFInfo
- Publication number
- CN111599415A CN111599415A CN202010398538.8A CN202010398538A CN111599415A CN 111599415 A CN111599415 A CN 111599415A CN 202010398538 A CN202010398538 A CN 202010398538A CN 111599415 A CN111599415 A CN 111599415A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- simulation
- furnace
- temperature
- boundary
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C10/00—Computational theoretical chemistry, i.e. ICT specially adapted for theoretical aspects of quantum chemistry, molecular mechanics, molecular dynamics or the like
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C60/00—Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
Landscapes
- Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a blast furnace digitization system implementation method based on computer simulation, which comprises the following steps: the method comprises the following steps of dividing a blast furnace geometric body in space, and setting boundary conditions and interfaces as initialization conditions among all the divided parts, wherein the divided parts of the blast furnace geometric body in space comprise a furnace top, a body, a convolution area and a furnace hearth; and then different parts of the blast furnace are simulated and integrated into a digital system capable of describing the whole blast furnace iron making, so that the problems that the whole blast furnace iron making process is difficult to describe and visualize through a digital means are solved, and the blast furnace is modeled from the control perspective.
Description
Technical Field
The invention relates to the technical field of ferrous metallurgy, in particular to a blast furnace digital system implementation method based on computer simulation.
Background
The blast furnace ironmaking process is quite complex, phenomena of gas (hot air, coal gas), solid (furnace burden), powder (injection fuel), liquid (slag iron) multi-phase flow, mass and heat transfer, chemistry and the like exist, dangerous operation conditions such as high temperature and high pressure are accompanied, and the internal state of the blast furnace cannot be digitally described and visualized by utilizing experiments and measuring means, so that the blast furnace is used as a black box for a long time and is seriously operated by the experience of field workers. In addition, the interior of the blast furnace has great discontinuity in time and space scales, so that the traditional computer simulation method based on a single scale (mainly a macroscopic scale computational fluid mechanics method and a microscopic scale discrete unit method) is difficult to be universally applied to the full blast furnace iron-making process. The blast furnace model developed at present based on computer simulation is established for the local part of the blast furnace, and the digitization and the visualization of the blast furnace iron-making process cannot be realized from the perspective of process control.
At present, the patents 201610110775.3, 201910648452.3, 201710804565.9, 201710804564.4, 201210123530.6, 201710240585.8 and 201610390270.7 cannot realize the description of the internal state of the blast furnace from the control perspective, and cannot realize the digitization and visualization of the internal state of the whole blast furnace.
Therefore, in combination with the above situation, there is a need for a simulation system for steel production, especially blast furnace production, which can realize digitization and visualization of the blast furnace ironmaking process from the aspect of control of the process.
Disclosure of Invention
In order to realize the description of the internal state of the blast furnace from the control perspective and realize the digitization and visualization of the internal state of the whole blast furnace, the invention provides a blast furnace digitization system realization method based on computer simulation.
The technical scheme of the invention is as follows:
the technical scheme of the invention provides a blast furnace digitization system implementation method based on computer simulation, which comprises the following steps:
step 1: the method comprises the following steps of dividing a blast furnace geometric body in space, and setting boundary conditions and interfaces as initialization conditions among all the divided parts, wherein the divided parts of the blast furnace geometric body in space comprise a furnace top, a body, a convolution area and a furnace hearth;
step 2: aiming at the continuous characteristic of the body, performing simulation on the state in the body of the blast furnace by using a computer simulation method by using a set interface condition and outputting a result;
and step 3: aiming at the discrete characteristics of the furnace top and the convolution region, respectively carrying out simulation on the multiphase flow of the furnace top and the convolution region by a computer simulation method by respectively utilizing partial results generated by the body simulation in the step 2 and outputting the results;
and 4, step 4: aiming at the continuous characteristic of the convolution area, carrying out simulation on the state in the convolution area by using a computer simulation method and outputting a result by using a partial result generated by body simulation in the step 2 and a partial result generated by convolution area simulation in the step 3;
and 5: aiming at the continuous characteristic of the hearth, performing simulation on the state in the blast furnace hearth by using a computer simulation method and utilizing partial results generated by the body simulation in the step 2, and outputting the results;
step 6: and (5) respectively updating the boundary conditions of each part by adopting the partial results of the steps 3, 4 and 5, repeating the simulation of each part according to the updated boundary conditions until the variation degree of the interface between each part of the divided blast furnace along with the iterative calculation is smaller than a set threshold range, and outputting the simulation result.
Preferably, in step 1, the blast furnace geometry comprises a rotating chute and a blast furnace cooling wall and an inner portion of a hearth bottom;
the set boundary conditions comprise information of charging materials added at an inlet of the rotary chute, information of hot air blown from an air port, information of fuel blowing, heat conductivity of a cooling wall, heat conductivity of the bottom of a furnace hearth, environmental temperature and cooling water temperature;
the set interfaces are respectively present on the charge level between the furnace top and the body, the rotating area boundary between the body and the rotating area, and the tap hole between the body and the furnace hearth.
Preferably, the information of the charge material fed to the inlet of the rotary chute comprises size, temperature, composition, density;
the information of the hot air blown from the tuyere comprises components, temperature, speed and pressure;
the information of the injected fuel includes size, temperature, composition, density.
Preferably, in step 2, the state in the body comprises multiphase flow, mass and heat transfer and chemical reaction in the body; wherein the multiphase flow of the body comprises the flow of coal gas, furnace burden and iron slag;
the method of computer simulation is a computational fluid mechanics method.
Preferably, step 3 specifically includes:
step 3-1: aiming at the discrete characteristic of the furnace top, carrying out simulation on the multiphase flow of the furnace top by using the speed, the temperature, the pressure and the components of the coal gas generated by the body simulation in the step 2 at the blast furnace charge level by adopting a coupled computational fluid mechanics method and a discrete unit method, and outputting a result; wherein the multi-phase flow of the furnace top comprises the flow of gas and solid charge;
step 3-2: aiming at the discrete characteristic of the cyclotron region, simulating and simulating the multiphase flow of the cyclotron region by using the size, the temperature, the density and the components of the furnace burden at the boundary of the cyclotron region generated by the body simulation in the step 2 and adopting a coupled computational fluid mechanics method and a discrete unit method, and outputting a result; wherein the multiphase flow of the swirling area comprises the flow of hot air and furnace charge.
Preferably, step 4 specifically includes:
aiming at the continuous characteristic of the cyclotron region, simulating and simulating multi-phase flow, mass and heat transfer and chemical reaction in the cyclotron region by using the size and the porosity of furnace charge at the boundary of the cyclotron region and the size, the temperature, the density and the components of the furnace charge at the boundary of the cyclotron region by adopting a computational fluid mechanics method, and outputting a result; wherein the multiphase flow in the convolution zone comprises the flow of gas, hot air, furnace charge and powder injection fuel.
Preferably, step 5 specifically includes:
aiming at the continuous characteristic of the hearth, carrying out simulation on multi-phase flow, mass and heat transfer and chemical reaction in the blast furnace hearth by using the temperature, speed, components and density of the iron slag and the coal gas at the taphole generated by the body simulation in the step 2 by adopting a computational fluid mechanics method and outputting a result; wherein the multiphase flow in the hearth comprises the flow of coal gas, a dead coke layer and iron slag.
Preferably, the specific steps of step 6 include:
step 6-1: updating the boundary conditions of the step 2 by adopting partial results of the step 3, the step 4 and the step 5, and performing simulation on the state in the body again by using a computational fluid dynamics method according to the updated boundary conditions;
step 6-2: updating the boundary conditions from the step 3 to the step 5 by adopting the result generated in the step 6-1, and operating the step 3 to the step 5 again in sequence;
step 6-3: and repeating the step 6-1 and the step 6-2 until the change degree of the interfaces among all the parts of the divided blast furnace along with the iterative calculation is smaller than a set threshold range, and outputting a simulation result.
Preferably, in step 6-1, part of the results produced in step 3 include the temperature, size, composition, density of the charge at the charge level and the size, porosity of the raceway boundary;
part of results generated in the step 4 comprise the temperature, the composition, the speed and the pressure of the gas at the boundary of the cyclotron region;
part of the results produced in step 5 include the pressure of the iron slag at the tap hole.
Preferably, step 6-2 specifically comprises:
updating the boundary conditions in the step 3-1 for the speed, temperature and pressure of the coal gas at the charge level and the components;
updating the boundary conditions in the step 3-2 and the step 4 according to the size, the temperature, the density and the composition of the furnace burden at the boundary of the raceway; and updating the boundary conditions in the step 5 for the temperature, the speed, the components and the density of the iron slag and the coal gas at the taphole.
According to the technical scheme, the invention has the following advantages: the blast furnace geometric solid is scientifically and reasonably divided, simulation is carried out on each part of the blast furnace pertinently by adopting a multi-scale means, and then the simulation is integrated into a digital system capable of describing the whole blast furnace ironmaking, so that the problem that the whole blast furnace ironmaking process is difficult to be described and visualized in a near digital mode from the process control angle is solved.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of a blast furnace provided by an embodiment of the present invention;
fig. 2 is a schematic view of a furnace roof provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of an ontology provided by an embodiment of the present invention;
FIG. 4 is a schematic view of a convolution region provided in an embodiment of the present invention;
FIG. 5 is a schematic view of a crucible provided by an embodiment of the present invention;
wherein, 1-blast furnace, 2-furnace top, 3-body, 4-convolution zone, 5-hearth, 6-rotary chute, 7-charge level, 8-lining, 9-convolution zone boundary, 10-taphole, 11-furnace charge, 12-coal gas, 13-soft melting zone, 14-iron slag, 15-hot air, 16-injection fuel, 17-dead coke layer, 18-tuyere and 19-rotary chute inlet.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all 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.
Example one
The embodiment of the invention provides a blast furnace digitization system implementation method based on computer simulation, which comprises the following steps:
step 1: the method comprises the following steps of dividing a blast furnace geometric body in space, and setting boundary conditions and interfaces as initialization conditions among all the divided parts, wherein the divided parts of the blast furnace geometric body in space comprise a furnace top, a body, a convolution area and a furnace hearth;
step 2: adopting a set interface condition, and adopting a computer simulation method to carry out simulation on the state in the body of the blast furnace according to the continuous characteristics of the body and output a result;
and step 3: aiming at the discrete characteristics of the furnace top and the convolution region, respectively carrying out simulation on the multiphase flow of the furnace top and the convolution region by a computer simulation method by respectively utilizing partial results generated by the body simulation in the step 2 and outputting the results;
and 4, step 4: aiming at the continuous characteristic of the convolution area, carrying out simulation on the state in the convolution area by using a computer simulation method and outputting a result by using a partial result generated by body simulation in the step 2 and a partial result generated by convolution area simulation in the step 3;
and 5: aiming at the continuous characteristic of the hearth, performing simulation on the state in the blast furnace hearth by using a computer simulation method and utilizing partial results generated by the body simulation in the step 2, and outputting the results;
step 6: and (5) respectively updating the boundary conditions of each part by adopting the partial results of the steps 3, 4 and 5, repeating the simulation of each part according to the updated boundary conditions until the variation degree of the interface between each part of the divided blast furnace along with the iterative calculation is smaller than a set threshold range, and outputting the simulation result.
Example two
The embodiment of the invention provides a blast furnace digitization system implementation method based on computer simulation, which comprises the following steps:
step 1: the blast furnace geometric solid is divided in space, boundary conditions and interfaces are set as initialization conditions among all the divided parts, as shown in figure 1, the blast furnace geometric solid is divided into four parts in space, the four parts comprise a furnace top 2, a body 3, a convolution area 4 and a furnace hearth 5 from top to bottom, and the furnace top 2 comprises a part above a charge level 7 of the blast furnace 1. The body 3 includes a portion from below the charge level 7 of the blast furnace 1 to the plane of the taphole 10 and does not include a portion within the raceway boundary 9. The raceway 4 includes a portion within a raceway boundary 9 of the blast furnace 1. The hearth 5 includes a portion below the tap hole 10 of the blast furnace 1.
The set boundary conditions comprise information of charging materials at the inlet 19 of the rotary chute, information of hot air blown from the tuyere 18, information of injected fuel 16, heat conductivity of a cooling wall, heat conductivity of the bottom of the furnace cylinder 5, ambient temperature and cooling water temperature; the set interfaces are respectively present at the charge level 7 between the furnace top 2 and the body 3, at the turning area boundary 9 between the body 3 and the turning area 4, and at the tap hole 10 between the body 3 and the furnace hearth 5. The information of the charge material added to the inlet 19 of the rotary chute includes size, temperature, composition, density; the information of the hot air blown from the tuyere 18 includes composition, temperature, speed, pressure; information about the injected fuel 16 includes size, temperature, composition, and density.
Step 2: adopting a set interface condition, and adopting a computer simulation method to carry out simulation on the state in the body 3 of the blast furnace 1 aiming at the continuous characteristic of the body 3 and output a result; as shown in fig. 3, using information of burden 11 at burden level 7 and gas 12 at convolution zone boundary 9 as boundary conditions, in lining 8, burden 11 flows downward from burden level 7 under the action of upward flowing gas 12 from convolution zone boundary 9, part of burden 11 is converted into iron slag 14 in soft melting zone 13 and flows downward, iron slag 14 flows to taphole 10 in lining 8 under the action of upward flowing gas 12 from convolution zone boundary 9, the rest of burden 11 flows out from convolution zone boundary 9, and gas 12 flows out from burden level 7; and simulating the state in the body 3 by using a computational fluid dynamics method and outputting the result. The states in the body 3 include multiphase flow, mass and heat transfer and chemical reactions in the body; wherein the multiphase flow of the body 3 comprises the flow of coal gas, furnace burden and iron slag.
And step 3: aiming at the discrete characteristics of the furnace top 2 and the convolution region 4, respectively carrying out simulation on the multiphase flow of the furnace top and the convolution region by a computer simulation method by using partial results generated by the body simulation in the step 2 and outputting the results; the method specifically comprises the following steps:
step 3-1: aiming at the discrete characteristic of the furnace top 2, the speed, the temperature, the pressure and the components of the coal gas generated by the body simulation in the step 2 at the blast furnace charge level are utilized, and the coupled computational fluid mechanics method and the discrete unit method are adopted to carry out simulation on the multiphase flow of the furnace top and output the result; wherein the multi-phase flow of the furnace top comprises the flow of gas and solid charge; specifically, as shown in fig. 2, using information of burden 11 at a rotating chute inlet 19 and gas 12 generated in step 2 at a burden level 7 as boundary conditions, burden 11 is added at the rotating chute inlet 19, the burden level 7 is formed under the action of the gas 12 through a rotating chute 6, and a coupled computational fluid dynamics method and a discrete unit method are used for performing simulation on multiphase flow of the furnace top and outputting results.
Step 3-2: aiming at the discrete characteristic of the cyclotron region, simulating and simulating the multiphase flow of the cyclotron region by using the size, the temperature, the density and the components of the furnace burden at the boundary of the cyclotron region generated by the body simulation in the step 2 and adopting a coupled computational fluid mechanics method and a discrete unit method, and outputting a result; wherein the multiphase flow of the swirling area comprises the flow of hot air and furnace charge. Specifically, as shown in fig. 4, using the information of the hot air 15 at the tuyere 18 and the furnace charge 11 generated in the step 2 at the cyclotron region boundary 9 as the boundary condition, the hot air 15 enters the cyclotron region 4 to react with the furnace charge 11 to form the cyclotron region boundary 9, and performing simulation on the multiphase flow in the cyclotron region by using a coupled computational fluid mechanics method and a discrete unit method and outputting the result.
And 4, step 4: aiming at the continuous characteristic of the convolution area, carrying out simulation on the state in the convolution area by using a computer simulation method and outputting a result by using a partial result generated by body simulation in the step 2 and a partial result generated by convolution area simulation in the step 3; and (3) using the information of the hot air 15 and the injected fuel 16 at the tuyere 18 and the convolution zone boundary 9 generated in the step 3 as boundary conditions, carrying out chemical reaction and flow conversion on the hot air 15, the injected fuel 16 and the furnace charge 11 to obtain coal gas 12, carrying out simulation on the state of the convolution zone by using a computational fluid dynamics method, and outputting the result.
And 5: aiming at the continuous characteristic of the hearth, performing simulation on the state in the blast furnace hearth by using a computer simulation method and utilizing partial results generated by the body simulation in the step 2, and outputting the results; as shown in fig. 5, using the information of the iron slag 14 and the gas 12 generated in step 2 at the taphole 10 as boundary conditions, the iron slag 14 flows downwards in the lining 8 and is discharged from the taphole 10 after being acted by the dead coke layer 17, and the computational fluid dynamics method is used for carrying out simulation on the multiphase flow, mass and heat transfer and chemical reaction in the hearth and outputting the result; wherein the multiphase flow in the hearth comprises gas, a solid dead coke layer and the flow of iron slag.
Step 6: and (5) respectively updating the boundary conditions of each part by adopting the partial results of the steps 3, 4 and 5, repeating the simulation of each part according to the updated boundary conditions until the variation degree of the interface between each part of the divided blast furnace along with the iterative calculation is smaller than a set threshold range, and outputting the simulation result.
The method comprises the following specific steps:
step 6-1: updating the boundary conditions of the step 2 by adopting partial results of the step 3, the step 4 and the step 5, and performing simulation on the state in the body again by using a computational fluid dynamics method according to the updated boundary conditions; and (3) updating the boundary conditions of the step (2) by using the temperature, the size, the composition and the density of the furnace burden 11 at the charge level 7 generated in the step (3-1), the size and the porosity of the rotating area boundary 9 generated in the step (3-2), the temperature, the composition, the speed and the pressure of the coal gas 12 at the rotating area boundary 9 generated in the step (4) and the pressure of the iron slag 14 at the taphole 10 generated in the step (5), and performing simulation on the state in the body (3) again by using a computational fluid mechanics method to output results.
Step 6-2: updating the boundary conditions from the step 3 to the step 5 by adopting the result generated in the step 6-1, and operating the step 3 to the step 5 again in sequence; in the step, the boundary conditions in the step 3-1 are updated by using the speed, the temperature and the pressure of the coal gas 12 at the charge level 7 generated in the step 6-1 respectively; updating the boundary conditions in the step 3-2 and the step 4 according to the size, the temperature, the density and the composition of the charging materials 11 at the boundary 9 of the cyclone zone; the temperature, velocity, composition and density of the iron slag 14 and the gas 12 at the tap hole 10 update the boundary conditions in step 5.
Step 6-3: and repeating the step 6-1 and the step 6-2 until the change degree of the interfaces among all the parts of the divided blast furnace along with the iterative calculation is smaller than a set threshold range, and outputting a simulation result. In this embodiment, the absolute value of the degree of change in the interface between the four portions is less than 10%. It should be noted that, in this embodiment, the method for each part of the specific simulation is an existing public simulation method, which is not described herein again.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A blast furnace digital system implementation method based on computer simulation is characterized by comprising the following steps:
step 1: the method comprises the following steps of dividing a blast furnace geometric body in space, and setting boundary conditions and interfaces as initialization conditions among all the divided parts, wherein the divided parts of the blast furnace geometric body in space comprise a furnace top, a body, a convolution area and a furnace hearth;
step 2: aiming at the continuous characteristic of the body, performing simulation on the state in the body of the blast furnace by using a computer simulation method by using a set interface condition and outputting a result;
and step 3: aiming at the discrete characteristics of the furnace top and the convolution region, respectively carrying out simulation on the multiphase flow of the furnace top and the convolution region by a computer simulation method by respectively utilizing partial results generated by the body simulation in the step 2 and outputting the results;
and 4, step 4: aiming at the continuous characteristic of the convolution area, carrying out simulation on the state in the convolution area by using a computer simulation method and outputting a result by using a partial result generated by body simulation in the step 2 and a partial result generated by convolution area simulation in the step 3;
and 5: aiming at the continuous characteristic of the hearth, performing simulation on the state in the blast furnace hearth by using a computer simulation method and utilizing partial results generated by the body simulation in the step 2, and outputting the results;
step 6: and (5) respectively updating the boundary conditions of each part by adopting the partial results of the steps 3, 4 and 5, repeating the simulation of each part according to the updated boundary conditions until the variation degree of the interface between each part of the divided blast furnace along with the iterative calculation is smaller than a set threshold range, and outputting the simulation result.
2. The method for realizing the blast furnace digitization system based on the computer simulation of claim 1, wherein in step 1, the blast furnace geometry comprises a rotating chute, a blast furnace cooling wall and a hearth bottom inner part;
the set boundary conditions comprise information of charging materials added at an inlet of the rotary chute, information of hot air blown from an air port, information of fuel blowing, heat conductivity of a cooling wall, heat conductivity of the bottom of a furnace hearth, environmental temperature and cooling water temperature;
the set interfaces are respectively present on the charge level between the furnace top and the body, the rotating area boundary between the body and the rotating area, and the tap hole between the body and the furnace hearth.
3. The method as claimed in claim 2, wherein the information of the charge material added to the inlet of the rotary chute includes size, temperature, composition, density;
the information of the hot air blown from the tuyere comprises components, temperature, speed and pressure;
the information of the injected fuel includes size, temperature, composition, density.
4. The method for implementing the blast furnace digitization system based on the computer simulation of claim 1, wherein in step 2, the states in the body include multiphase flow, mass and heat transfer, and chemical reactions in the body; wherein the multiphase flow of the body comprises the flow of coal gas, furnace burden and iron slag;
the method of computer simulation is a computational fluid mechanics method.
5. The method for realizing the blast furnace digitization system based on the computer simulation of claim 1, wherein the step 3 specifically comprises:
step 3-1: aiming at the discrete characteristic of the furnace top, simulating and simulating the multiphase flow of the furnace top by using the speed, the temperature, the pressure and the components of the coal gas generated by the body simulation in the step 2 at the charge level of the blast furnace by adopting a coupled computational fluid mechanics method and a discrete unit method, and outputting a result; wherein the multi-phase flow of the furnace top comprises the flow of gas and solid charge;
step 3-2: aiming at the discrete characteristic of the cyclotron region, simulating and simulating the multiphase flow of the cyclotron region by using the size, the temperature, the density and the components of the furnace burden at the boundary of the cyclotron region generated by the body simulation in the step 2 and adopting a coupled computational fluid mechanics method and a discrete unit method, and outputting a result; wherein the multiphase flow of the swirling area comprises the flow of hot air and furnace charge.
6. The method for realizing the blast furnace digitization system based on the computer simulation of claim 1, wherein the step 4 specifically comprises:
aiming at the continuous characteristic of the cyclotron region, simulating and simulating multi-phase flow, mass and heat transfer and chemical reaction in the cyclotron region by using the size and the porosity of furnace charge at the boundary of the cyclotron region and the size, the temperature, the density and the components of the furnace charge at the boundary of the cyclotron region by adopting a computational fluid mechanics method, and outputting a result; wherein the multiphase flow in the convolution zone comprises the flow of gas, hot air, furnace charge and powder injection fuel.
7. The method for realizing the blast furnace digitization system based on the computer simulation of claim 1, wherein the step 5 specifically comprises:
aiming at the continuous characteristic of the hearth, carrying out simulation on multi-phase flow, mass and heat transfer and chemical reaction in the blast furnace hearth by using the temperature, speed, components and density of the iron slag and the coal gas at the taphole generated by the body simulation in the step 2 by adopting a computational fluid mechanics method and outputting a result; wherein the multiphase flow in the hearth comprises the flow of coal gas, a dead coke layer and iron slag.
8. The method for implementing the blast furnace digitization system based on the computer simulation of claim 5, wherein the specific steps of step 6 include:
step 6-1: updating the boundary conditions of the step 2 by adopting partial results of the step 3, the step 4 and the step 5, and performing simulation on the state in the body again by using a computational fluid dynamics method according to the updated boundary conditions;
step 6-2: updating the boundary conditions from the step 3 to the step 5 by adopting the result generated in the step 6-1, and operating the step 3 to the step 5 again in sequence;
step 6-3: and repeating the step 6-1 and the step 6-2 until the change degree of the interfaces among all the parts of the divided blast furnace along with the iterative calculation is smaller than a set threshold range, and outputting a simulation result.
9. The method of claim 8, wherein in step 6-1, the partial results generated in step 3 include temperature, size, composition, density of the charge at the charge level, and size and porosity of the rotor zone boundary;
part of results generated in the step 4 comprise the temperature, the composition, the speed and the pressure of the gas at the boundary of the cyclotron region;
part of the results produced in step 5 include the pressure of the iron slag at the tap hole.
10. The method for realizing the blast furnace digitization system based on the computer simulation of claim 8, wherein the step 6-2 specifically comprises:
updating the boundary conditions in the step 3-1 for the speed, temperature and pressure of the coal gas at the charge level and the components;
updating the boundary conditions in the step 3-2 and the step 4 according to the size, the temperature, the density and the composition of the furnace burden at the boundary of the raceway;
and updating the boundary conditions in the step 5 for the temperature, the speed, the components and the density of the iron slag and the coal gas at the taphole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010398538.8A CN111599415B (en) | 2020-05-12 | 2020-05-12 | Method for realizing blast furnace digital system based on computer simulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010398538.8A CN111599415B (en) | 2020-05-12 | 2020-05-12 | Method for realizing blast furnace digital system based on computer simulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111599415A true CN111599415A (en) | 2020-08-28 |
| CN111599415B CN111599415B (en) | 2023-05-09 |
Family
ID=72182290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010398538.8A Active CN111599415B (en) | 2020-05-12 | 2020-05-12 | Method for realizing blast furnace digital system based on computer simulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111599415B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113362904A (en) * | 2021-05-31 | 2021-09-07 | 马鞍山钢铁股份有限公司 | Method for detecting shape of blast furnace tuyere raceway |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500955A (en) * | 2016-10-20 | 2017-03-15 | 广东电网有限责任公司电力科学研究院 | Power boiler breeze combustion characteristics analogy method and device under varying duty |
| CN106929615A (en) * | 2017-04-13 | 2017-07-07 | 安徽工业大学 | A kind of blast furnace crucibe numerical simulation and resolution system and its control method |
| CN106957935A (en) * | 2017-05-27 | 2017-07-18 | 中南大学 | The flexible measurement method of soft heat belt shape inside a kind of blast furnace |
| CN107515999A (en) * | 2017-10-13 | 2017-12-26 | 中南大学 | It is a kind of to be used to determine the motion of top gas stream and the method for Dust distribution |
| CN108763550A (en) * | 2018-06-01 | 2018-11-06 | 东北大学 | Blast furnace big data application system |
-
2020
- 2020-05-12 CN CN202010398538.8A patent/CN111599415B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500955A (en) * | 2016-10-20 | 2017-03-15 | 广东电网有限责任公司电力科学研究院 | Power boiler breeze combustion characteristics analogy method and device under varying duty |
| CN106929615A (en) * | 2017-04-13 | 2017-07-07 | 安徽工业大学 | A kind of blast furnace crucibe numerical simulation and resolution system and its control method |
| CN106957935A (en) * | 2017-05-27 | 2017-07-18 | 中南大学 | The flexible measurement method of soft heat belt shape inside a kind of blast furnace |
| CN107515999A (en) * | 2017-10-13 | 2017-12-26 | 中南大学 | It is a kind of to be used to determine the motion of top gas stream and the method for Dust distribution |
| CN108763550A (en) * | 2018-06-01 | 2018-11-06 | 东北大学 | Blast furnace big data application system |
Non-Patent Citations (3)
| Title |
|---|
| 史岩彬,陈举华,张丽丽: "基于多相流的高炉仿真模型研究" * |
| 史岩彬;付振岭;沈学会;: "高炉热流过程瞬态模型及数值模拟研究" * |
| 商晓东;张贝克;: "基于计算流体力学基础高炉建模与仿真探讨" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113362904A (en) * | 2021-05-31 | 2021-09-07 | 马鞍山钢铁股份有限公司 | Method for detecting shape of blast furnace tuyere raceway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111599415B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ariyama et al. | Recent progress on advanced blast furnace mathematical models based on discrete method | |
| de Castro et al. | A theoretical study using the multiphase numerical simulation technique for effective use of H2 as blast furnaces fuel | |
| Yu et al. | Modeling of hydrogen shaft injection in ironmaking blast furnaces | |
| Zhou et al. | Comprehensive numerical modeling of the blast furnace ironmaking process | |
| CN106957935B (en) | A kind of flexible measurement method of blast furnace inside soft heat belt shape | |
| Shao et al. | A numerical study on the operation of the H 2 shaft furnace with top gas recycling | |
| Yu et al. | Transient state modeling of industry-scale ironmaking blast furnaces | |
| CN111599415A (en) | Blast furnace digital system implementation method based on computer simulation | |
| Liu et al. | Optimization of pulverized coal injection (PCI) rate in an ironmaking blast furnace by an integrated process model | |
| Chattopadhyay et al. | Applications of Computational Fluid Dynamics (CFD) in iron-and steelmaking: Part 1 | |
| Burgess | Fuel combustion in the blast furnace raceway zone | |
| Azadi et al. | Nonlinear prediction model of blast furnace operation status | |
| Fu et al. | Burden descending and redistribution in a blast furnace | |
| Bian et al. | Numerical simulation of multiphase flow in ironmaking process for oxygen-rich side-blown bath smelting furnace | |
| CN114636572B (en) | Method for determining coal gas utilization rate of iron ore reduction process in blast furnace block area | |
| Romenets et al. | Technological assessment of the Romelt process in the classic and two-zone variants | |
| CN102622465B (en) | Computer-based rotary hearth furnace simulation system | |
| Voronov et al. | Gas dynamics in the working space of a modern electric-arc steelmaking furnace | |
| Fu | Numerical simulation of ironmaking blast furnace shaft | |
| Zhao et al. | Three-dimensional numerical simulation of flow and splash behavior in an oxygen coal combustion melting and separating furnace | |
| GAO et al. | Mathematical modelling and numerical optimization of particle heating process in copper flash furnace | |
| CN110427693B (en) | Fluid simulation calculation method in industrial reactor with spray gun | |
| Pal et al. | Effect of tuyere blocking on melter gasifier performance | |
| Pal et al. | Mathematical model of COREX melter gasifier: Part II. Dynamic model | |
| CN116306256B (en) | Simulation method for efficiently and stably adding molten iron in steelmaking process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |