CN111599415B - Method for realizing blast furnace digital system based on computer simulation - Google Patents
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Abstract
The invention provides a method for realizing a blast furnace digital system based on computer simulation, which comprises the following steps: dividing the blast furnace geometry in space, and setting boundary conditions and interfaces as initialization conditions among the divided parts, wherein the part of the blast furnace geometry divided in space comprises a furnace top, a body, a convolution zone and a furnace hearth; then, different parts of the blast furnace are simulated, and then the blast furnace is coupled and integrated into a digital system capable of describing the whole blast furnace ironmaking, so that the problems that the whole blast furnace ironmaking process is difficult to describe and difficult to visualize by digital means are solved, and the modeling of the blast furnace from the control angle is realized.
Description
Technical Field
The invention relates to the technical field of ferrous metallurgy, in particular to a method for realizing a blast furnace digital system based on computer simulation.
Background
The blast furnace ironmaking process is very complicated, and has the phenomena of multiphase flow, mass transfer, heat transfer, chemistry and the like of gas (hot air, coal gas) -solid (furnace burden) -powder (injected fuel) -liquid (slag iron) and the like, and is accompanied with dangerous operating conditions such as high temperature, high pressure and the like, and the digital description and visualization of the internal state of the blast furnace can not be carried out by utilizing experimental and measuring means, so the blast furnace has long been used as a black box and is seriously operated by depending on 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 means based on a single scale (mainly a macroscopic scale computational fluid mechanical method and a microscopic scale discrete unit method) are difficult to be universally applied to the whole blast furnace ironmaking process. The currently developed blast furnace models based on computer simulation are established for the blast furnace part, and the digitization and the visualization of the blast furnace ironmaking process cannot be realized from the aspect of process control.
The current patents 201610110775.3, 201910648452.3, 201710804565.9, 201710804564.4, 201210123530.6, 201710240585.8, 201610390270.7 cannot describe the internal state of the blast furnace from a control perspective, and cannot realize the digitization and visualization of the internal state of the whole blast furnace.
For this reason, in combination with the above-mentioned circumstances, there is a need for a simulation system that can realize the digitization and visualization of the blast furnace ironmaking process from a control perspective, particularly for the production of blast furnaces.
Disclosure of Invention
In order to realize the description of the internal state of the blast furnace from the control angle and realize the digitization and visualization of the internal state of the whole blast furnace, the invention provides a method for realizing a blast furnace digitization system based on computer simulation.
The technical scheme of the invention is as follows:
the invention provides a method for realizing a blast furnace digital system based on computer simulation, which comprises the following steps:
step 1: dividing the blast furnace geometry in space, and setting boundary conditions and interfaces as initialization conditions among the divided parts, wherein the part of the blast furnace geometry divided in space comprises a furnace top, a body, a convolution zone and a furnace hearth;
step 2: aiming at the continuous characteristic of the blast furnace body, using a set interface condition, adopting a computer simulation method to simulate the state in the blast furnace body and outputting a result;
step 3: aiming at the discrete characteristics of the furnace top and the convolution zone, respectively utilizing partial results generated by the body simulation in the step 2, respectively adopting a computer simulation method to simulate multiphase flow of the furnace top and the convolution zone and outputting the results;
step 4: aiming at the continuous characteristics of the convolution region, the partial results generated by the body simulation in the step 2 and the partial results generated by the convolution region simulation in the step 3 are utilized, and a computer simulation method is adopted to simulate the state in the convolution region and output the results;
step 5: aiming at the continuous characteristics of the hearth, part of results generated by the body simulation in the step 2 are utilized, and a computer simulation method is adopted to simulate the state in the blast furnace hearth and output the results;
step 6: and (3) respectively updating boundary conditions of all parts by adopting partial results of the step (3), the step (4) and the step (5), repeatedly performing simulation on all parts according to the updated boundary conditions until the change degree of interfaces among all parts of the divided blast furnace along with iterative calculation is smaller than a set threshold range, and outputting a simulation result.
Preferably, in step 1, the blast furnace geometry comprises a rotating chute and a blast furnace stave and a hearth bottom inner portion;
the set boundary conditions comprise information of the charging material added into the inlet of the rotary chute, information of hot air blown from the air port, information of fuel injection, heat conductivity coefficient of the cooling wall, heat conductivity coefficient of the bottom of the hearth, temperature of the environment and temperature of cooling water;
the set interface is respectively arranged on the charge level between the furnace top and the body, the convolution zone boundary between the body and the convolution zone, and the tap hole between the body and the hearth.
Preferably, the information at the inlet of the charge addition rotary chute includes size, temperature, composition, density;
the information of the hot air blown from the air port comprises components, temperature, speed and pressure;
the information of the injected fuel includes size, temperature, composition, density.
Preferably, in step 2, the conditions within the body include multiphase flow within the body, mass and heat transfer, and chemical reactions; wherein the multiphase flow of the body comprises the flow of coal gas, furnace burden and slag iron;
the method of computer simulation is a computational fluid mechanics method.
Preferably, the step 3 specifically includes:
step 3-1: aiming at the discrete characteristics of the furnace top, the speed, the temperature, the pressure and the components of the gas generated by the body simulation in the step 2 at the blast furnace burden surface are utilized, and a coupled computational fluid mechanical method and a discrete unit method are adopted to simulate the multiphase flow of the furnace top and output the result; wherein the multiphase flow of the furnace roof comprises the flow of gas and solid furnace burden;
step 3-2: aiming at the discrete characteristics of the convolution region, the size, the temperature, the density and the components of furnace burden at the boundary of the convolution region generated by the body simulation in the step 2 are utilized, and a coupled computational fluid mechanical method and a discrete unit method are adopted to simulate the multiphase flow of the convolution region and output results; wherein the multiphase flow of the swirling zone comprises the flow of hot air and burden.
Preferably, step 4 specifically includes:
aiming at the continuous characteristics of the convolution region, the multiphase flow, mass transfer, heat transfer and chemical reaction in the convolution region are simulated by using the size, the porosity of the furnace burden at the boundary of the convolution region and the size, the temperature, the density and the components of the furnace burden at the boundary of the convolution region by adopting a computational fluid dynamics method, and the result is output; wherein the multiphase flow in the swirling zone comprises the flow of gas, hot air, furnace burden and powder injection fuel.
Preferably, step 5 specifically includes:
aiming at the continuous characteristics of the hearth, the temperature, the speed, the components and the density of slag iron and coal gas at a tap hole generated by the body simulation in the step 2 are utilized, and a computational fluid dynamics method is adopted to carry out simulation on multiphase flow, mass transfer, heat transfer and chemical reaction in the hearth of the blast furnace and output the result; wherein the multiphase flow in the hearth comprises the flow of gas, dead coke layers and slag iron.
Preferably, the specific steps of the step 6 include:
step 6-1: adopting partial results of the step 3, the step 4 and the step 5, updating the boundary condition of the step 2, and carrying out simulation again on the state in the body by using a computational fluid dynamics method according to the updated boundary condition;
step 6-2: updating the boundary conditions of the steps 3 to 5 by adopting the result generated in the step 6-1, and restarting the steps 3 to 5 in sequence;
step 6-3: repeating the steps 6-1 and 6-2 until the change degree of the interfaces among the divided blast furnace parts along with iterative calculation is smaller than a set threshold range, and outputting a simulation result.
Preferably, in step 6-1, the partial results produced in step 3 include the temperature, size, composition, density of the charge at the charge level and the size, porosity of the convolution zone boundaries;
the partial results generated in the step 4 comprise the temperature, the composition, the speed and the pressure of the gas at the boundary of the convolution zone;
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:
the boundary conditions in the step 3-1 are updated according to the speed, temperature and pressure of the gas at the material surface;
updating 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 swirling zone; the temperature, speed, composition and density of slag iron and coal gas at the tapping hole update the boundary conditions in the step 5.
From the above technical scheme, the invention has the following advantages: through scientific and reasonable division of the geometry of the blast furnace, and targeted simulation of each part of the blast furnace by adopting a multi-scale means, the system is integrated into a digital system capable of describing the whole blast furnace ironmaking, and the problem that the whole blast furnace ironmaking process is difficult to describe and visualize in a near digital manner from the aspect of process control is solved.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as its practical advantages.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
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 stove top provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of the present invention;
FIG. 4 is a schematic view of a convolution region provided by an embodiment of the present disclosure;
FIG. 5 is a schematic view of a hearth provided by an embodiment of the present invention;
the furnace comprises a 1-blast furnace, a 2-furnace top, a 3-body, a 4-convolution zone, a 5-hearth, a 6-rotary chute, a 7-charge level, an 8-liner, a 9-convolution zone boundary, a 10-tapping hole, an 11-charge, 12-gas, a 13-soft smelting belt, 14-iron slag, 15-hot air, 16-injection fuel, a 17-dead coke layer, 18-tuyere and a 19-rotary chute inlet.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
The embodiment of the invention provides a method for realizing a blast furnace digital system based on computer simulation, which comprises the following steps:
step 1: dividing the blast furnace geometry in space, and setting boundary conditions and interfaces as initialization conditions among the divided parts, wherein the part of the blast furnace geometry divided in space comprises a furnace top, a body, a convolution zone and a furnace hearth;
step 2: adopting a set interface condition, adopting a computer simulation method aiming at the continuous characteristic of the blast furnace body to simulate the state in the blast furnace body and outputting a result;
step 3: aiming at the discrete characteristics of the furnace top and the convolution zone, respectively utilizing partial results generated by the body simulation in the step 2, respectively adopting a computer simulation method to simulate multiphase flow of the furnace top and the convolution zone and outputting the results;
step 4: aiming at the continuous characteristics of the convolution region, the partial results generated by the body simulation in the step 2 and the partial results generated by the convolution region simulation in the step 3 are utilized, and a computer simulation method is adopted to simulate the state in the convolution region and output the results;
step 5: aiming at the continuous characteristics of the hearth, part of results generated by the body simulation in the step 2 are utilized, and a computer simulation method is adopted to simulate the state in the blast furnace hearth and output the results;
step 6: and (3) respectively updating boundary conditions of all parts by adopting partial results of the step (3), the step (4) and the step (5), repeatedly performing simulation on all parts according to the updated boundary conditions until the change degree of interfaces among all parts of the divided blast furnace along with iterative calculation is smaller than a set threshold range, and outputting a simulation result.
Example two
The embodiment of the invention provides a method for realizing a blast furnace digital system based on computer simulation, which comprises the following steps:
step 1: the blast furnace geometry is spatially divided and boundary conditions and interfaces are set as initialization conditions between the divided parts, and as shown in fig. 1, the blast furnace geometry is spatially divided into four parts including a furnace top 2, a body 3, a swirl zone 4 and a hearth 5 from top to bottom, the furnace top 2 including a part above a charge level 7 of the blast furnace 1. The body 3 includes a portion below the charge level 7 of the blast furnace 1 to the plane of the tap hole 10 and does not include a portion within the swirl zone boundary 9. The swirling zone 4 comprises a portion of the blast furnace 1 that is within the swirling zone boundary 9. The hearth 5 includes a portion below the tap hole 10 of the blast furnace 1.
The set boundary conditions comprise information of the charging material at the inlet 19 of the rotary chute, information of hot air blown from the air port 18, information of the blown fuel 16, heat conductivity coefficient of the cooling wall, heat conductivity coefficient of the bottom of the hearth 5, temperature of the environment and temperature of cooling water; the set interface is respectively present at the charge level 7 between the furnace roof 2 and the body 3, the swirl zone boundary 9 between the body 3 and the swirl zone 4, and the tap hole 10 between the body 3 and the hearth 5. The information at the charge addition to the rotating chute inlet 19 includes size, temperature, composition, density; the information of the hot air blown from the tuyere 18 includes composition, temperature, speed, pressure; the information of the injected fuel 16 includes size, temperature, composition, density.
Step 2: adopting a set interface condition, adopting a computer simulation method aiming at the continuous characteristic of the body 3 to simulate the state in the body 3 of the blast furnace 1 and outputting a result; as shown in fig. 3, using the assumed information of the burden 11 at the burden surface 7 and the gas 12 at the swirl zone boundary 9 as boundary conditions, in the inner liner 8, the burden 11 flows downward from the burden surface 7 by the upward flowing gas 12 from the swirl zone boundary 9, part of the burden 11 is converted into iron slag 14 in the reflow zone 13 and flows downward, the iron slag 14 flows to the tap hole 10 in the inner liner 8 by the upward flowing gas 12 from the swirl zone boundary 9, the remaining burden 11 flows out from the swirl zone boundary 9, and the gas 12 flows out from the burden surface 7; and (3) carrying out simulation on the state in the body 3 by using a computational fluid dynamics method and outputting a result. The conditions within the body 3 include multiphase flow within the body, mass and heat transfer, and chemical reactions; wherein the multiphase flow of the body 3 comprises the flow of gas, furnace burden and slag iron.
Step 3: aiming at the discrete characteristics of the furnace top 2 and the convolution zone 4, respectively utilizing partial results generated by the body simulation in the step 2, respectively adopting a computer simulation method to simulate and output the multiphase flow of the furnace top and the convolution zone; the method specifically comprises the following steps:
step 3-1: aiming at the discrete characteristics of the furnace top 2, the speed, the temperature, the pressure and the components of the gas generated by the body simulation in the step 2 at the blast furnace burden surface are utilized, and a coupled computational fluid mechanical method and a discrete unit method are adopted to simulate the multiphase flow of the furnace top and output the result; wherein the multiphase flow of the furnace roof comprises the flow of gas and solid furnace burden; specifically, as shown in fig. 2, using the information of the furnace burden 11 at the rotary chute inlet 19 and the gas 12 generated in the step 2 at the burden surface 7 as boundary conditions, the furnace burden 11 is added at the rotary chute inlet 19, the burden surface 7 is formed under the action of the gas 12 through the rotary chute 6, and the coupled computational fluid mechanics method and discrete unit method are utilized to simulate the multiphase flow of the furnace roof and output the result.
Step 3-2: aiming at the discrete characteristics of the convolution region, the size, the temperature, the density and the components of furnace burden at the boundary of the convolution region generated by the body simulation in the step 2 are utilized, and a coupled computational fluid mechanical method and a discrete unit method are adopted to simulate the multiphase flow of the convolution region and output results; wherein the multiphase flow of the swirling zone comprises the flow of hot air and burden. Specifically, as shown in fig. 4, using the information of the hot air 15 at the tuyere 18 and the furnace burden 11 generated in the step 2 at the swirling zone boundary 9 as boundary conditions, the hot air 15 enters the swirling zone 4 to react with the furnace burden 11 to form the swirling zone boundary 9, and the multiphase flow of the swirling zone is simulated by using a coupled computational fluid dynamics method and a discrete unit method and the result is output.
Step 4: aiming at the continuous characteristics of the convolution region, the partial results generated by the body simulation in the step 2 and the partial results generated by the convolution region simulation in the step 3 are utilized, and a computer simulation method is adopted to simulate the state in the convolution region and output the results; the information of the whirling region boundary 9 generated in the step 3 and the position of the tuyere 18 of the hot air 15 and the injection fuel 16 is used as boundary conditions, the hot air 15, the injection fuel 16 and the furnace burden 11 are subjected to chemical reaction and flow conversion into the coal gas 12, and the state of the whirling region is simulated by a computational fluid dynamics method and the result is output.
Step 5: aiming at the continuous characteristics of the hearth, part of results generated by the body simulation in the step 2 are utilized, and a computer simulation method is adopted to simulate the state in the blast furnace hearth and output the results; as shown in fig. 5, using the information of the slag iron 14 and the gas 12 generated in the step 2 at the tap hole 10 as boundary conditions, the slag iron 14 flows downwards in the inner liner 8 and is discharged from the tap hole 10 after being acted by the dead coke layer 17, and the multiphase flow, mass and heat transfer and chemical reaction in the hearth are simulated and simulated by using a computational fluid mechanics method and the result is output; wherein the multiphase flow in the hearth comprises the flow of gas, solid dead coke layers and slag iron.
Step 6: and (3) respectively updating boundary conditions of all parts by adopting partial results of the step (3), the step (4) and the step (5), repeatedly performing simulation on all parts according to the updated boundary conditions until the change degree of interfaces among all parts of the divided blast furnace along with iterative calculation is smaller than a set threshold range, and outputting a simulation result.
The method comprises the following specific steps:
step 6-1: adopting partial results of the step 3, the step 4 and the step 5, updating the boundary condition of the step 2, and carrying out simulation again on the state in the body by using a computational fluid dynamics method according to the updated boundary condition; the temperature, the size, the composition and the density of the furnace burden 11 generated in the step 3-1 at the burden surface 7 are used, the size, the porosity and the composition of the swirl zone boundary 9 generated in the step 3-2 are used, the temperature, the composition, the speed and the pressure of the coal gas 12 generated in the step 4 at the swirl zone boundary 9 are used, the pressure of the slag iron 14 generated in the step 5 at the tap hole 10 is used for updating the boundary condition of the step 2, and a computational fluid mechanics method is used for carrying out simulation on the state in the body (3) again to output a result.
Step 6-2: updating the boundary conditions of the steps 3 to 5 by adopting the result generated in the step 6-1, and restarting the steps 3 to 5 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 gas 12 at the material surface 7 generated in the step 6-1 respectively; the size, temperature, density, composition of charge 11 at the convolution zone boundary 9 update the boundary conditions in steps 3-2 and 4; the temperature, speed, composition, density of the slag iron 14 and the gas 12 at the tap hole 10 update the boundary conditions in step 5.
Step 6-3: repeating the steps 6-1 and 6-2 until the change degree of the interfaces among the divided blast furnace parts along with iterative calculation is smaller than a set threshold range, and outputting a simulation result. In this embodiment, the absolute value of the degree of interface change between the four portions is less than 10%. It should be noted that, in this embodiment, the specific simulation method of each part is the existing disclosed simulation method, which is not described herein.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The method for realizing the blast furnace digital system based on the computer simulation is characterized by comprising the following steps:
step 1: dividing the blast furnace geometry in space, and setting boundary conditions and interfaces as initialization conditions among the divided parts, wherein the part of the blast furnace geometry divided in space comprises a furnace top, a body, a convolution zone and a furnace hearth;
step 2: aiming at the continuous characteristic of the blast furnace body, using a set interface condition, adopting a computer simulation method to simulate the state in the blast furnace body and outputting a result;
step 3: aiming at the discrete characteristics of the furnace top and the convolution zone, respectively utilizing partial results generated by the body simulation in the step 2, respectively adopting a computer simulation method to simulate multiphase flow of the furnace top and the convolution zone and outputting the results;
step 4: aiming at the continuous characteristics of the convolution region, the partial results generated by the body simulation in the step 2 and the partial results generated by the convolution region simulation in the step 3 are utilized, and a computer simulation method is adopted to simulate the state in the convolution region and output the results;
step 5: aiming at the continuous characteristics of the hearth, part of results generated by the body simulation in the step 2 are utilized, and a computer simulation method is adopted to simulate the state in the blast furnace hearth and output the results;
step 6: adopting partial results of the steps 3, 4 and 5, respectively updating boundary conditions of each part, repeatedly carrying out simulation on each part according to the updated boundary conditions until the change degree of interfaces among the parts of the divided blast furnace along with iterative calculation is smaller than a set threshold range, and outputting a simulation result;
the step 3 specifically comprises the following steps:
step 3-1: aiming at the discrete characteristics of the furnace top, the speed, the temperature, the pressure and the components of the gas generated by the body simulation in the step 2 at the charge level of the blast furnace are utilized, and a coupled computational fluid mechanics method and a discrete unit method are adopted to simulate and simulate the multiphase flow of the furnace top and output the result; wherein the multiphase flow of the furnace roof comprises the flow of gas and solid furnace burden;
step 3-2: aiming at the discrete characteristics of the convolution region, the size, the temperature, the density and the components of furnace burden at the boundary of the convolution region generated by the body simulation in the step 2 are utilized, and a coupled computational fluid mechanical method and a discrete unit method are adopted to simulate the multiphase flow of the convolution region and output results; wherein the multiphase flow of the swirling zone comprises the flow of hot air and furnace charge;
the step 4 specifically comprises the following steps:
aiming at the continuous characteristics of the convolution region, the multiphase flow, mass transfer, heat transfer and chemical reaction in the convolution region are simulated by using the size, the porosity of the furnace burden at the boundary of the convolution region and the size, the temperature, the density and the components of the furnace burden at the boundary of the convolution region by adopting a computational fluid dynamics method, and the result is output; the multiphase flow in the swirling zone comprises the flow of gas, hot air, furnace burden and powder injection fuel;
the step 5 specifically comprises the following steps:
aiming at the continuous characteristics of the hearth, the temperature, the speed, the components and the density of slag iron and coal gas at a tap hole generated by the body simulation in the step 2 are utilized, and a computational fluid dynamics method is adopted to carry out simulation on multiphase flow, mass transfer, heat transfer and chemical reaction in the hearth of the blast furnace and output the result; wherein the multiphase flow in the hearth comprises the flow of gas, dead coke layers and slag iron.
2. The method for realizing the computer simulation-based blast furnace digitizing system according to claim 1, wherein in step 1, the blast furnace geometry comprises a rotating chute, a blast furnace cooling wall and an inner part of the bottom of a hearth;
the set boundary conditions comprise information of the charging material added into the inlet of the rotary chute, information of hot air blown from the air port, information of fuel injection, heat conductivity coefficient of the cooling wall, heat conductivity coefficient of the bottom of the hearth, temperature of the environment and temperature of cooling water;
the set interface is respectively arranged on the charge level between the furnace top and the body, the convolution zone boundary between the body and the convolution zone, and the tap hole between the body and the hearth.
3. The method for realizing the blast furnace digitizing system based on the computer simulation according to claim 2, wherein the information of the charging material at the inlet of the charging material feeding rotary chute comprises size, temperature, composition and density;
the information of the hot air blown from the air port comprises components, temperature, speed and pressure;
the information of the injected fuel includes size, temperature, composition, density.
4. The method for realizing the digital system of the blast furnace based on the computer simulation according to claim 1, wherein in the step 2, the states in the body comprise 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 slag iron;
the method of computer simulation is a computational fluid mechanics method.
5. The method for realizing the digitized system of the blast furnace based on the computer simulation of claim 1, wherein the specific steps of the step 6 comprise the following steps:
step 6-1: adopting partial results of the step 3, the step 4 and the step 5, updating the boundary condition of the step 2, and carrying out simulation again on the state in the body by using a computational fluid dynamics method according to the updated boundary condition;
step 6-2: updating the boundary conditions of the steps 3 to 5 by adopting the result generated in the step 6-1, and restarting the steps 3 to 5 in sequence;
step 6-3: repeating the steps 6-1 and 6-2 until the change degree of the interfaces among the divided blast furnace parts along with iterative calculation is smaller than a set threshold range, and outputting a simulation result.
6. The method for realizing the digitized system of the blast furnace based on the computer simulation of claim 5, wherein in the step 6-1, the partial results generated in the step 3 comprise the temperature, the size, the composition and the density of the furnace burden at the burden surface and the size and the porosity of the boundary of the swirling zone;
the partial results generated in the step 4 comprise the temperature, the composition, the speed and the pressure of the gas at the boundary of the convolution zone;
part of the results produced in step 5 include the pressure of the iron slag at the tap hole.
7. The method for realizing the digitized system of the blast furnace based on the computer simulation of claim 5, wherein the step 6-2 specifically comprises the following steps:
the boundary conditions in the step 3-1 are updated according to the speed, temperature and pressure of the gas at the material surface;
updating 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 swirling zone;
the temperature, speed, composition and density of slag iron and coal gas at the tapping hole update the boundary conditions in the step 5.
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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 ; 付振岭 ; 沈学会 ; .高炉热流过程瞬态模型及数值模拟研究.山东轻工业学院学报(自然科学版).2008,(第03期),全文. * |
| 史岩彬,陈举华,张丽丽.基于多相流的高炉仿真模型研究.武汉理工大学学报.2005,(第07期),全文. * |
| 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.电脑知识与技术.2012,(第26期),全文. * |
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