CN105045994A - Method for optimizing thermal regulation of belt type roasting machine - Google Patents
Method for optimizing thermal regulation of belt type roasting machine Download PDFInfo
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Abstract
The invention discloses a method for optimizing a thermal regulation of a belt type roasting machine, and belongs to the technical field of a roasting technical process of metallurgical industry ore or waste material preprocessing. The method comprises the following steps: establishing a three-dimensional model of the belt type roasting machine through computer software; carrying out analog calculation on a belt type roasting machine model; carrying out postprocessing analysis on an analog calculation result; and according to a postprocessing analysis result, optimizing the thermal regulation of the belt type roasting machine. The method can carry out omnibearing analog on the thermal regulation of the belt type roasting machine, so that the whole thermal regulation of the belt type roasting machine can be integrally optimized according to the postprocessing analysis result.
Description
Technical field
The present invention relates to metallurgy industry ore or waste material pretreated roasting technique process technology field, particularly relate to a kind of method optimizing belt type roasting machine thermal regulation.
Background technology
Belt roasting technique grows up by the enlightenment of continuous pallettype sintering machine.
Its advantage is: 1) in belt type roasting machine technological process, the whole technological process of pellet roasting comprises drying, preheating, roasting, cooling complete all on one device, there is the features such as technique is simple, characteristics of compact layout, equipment needed thereby tonnage are light, for reducing floor area, reduce quantities, realize recycling and reducing hear rate and power consumption creates condition of roasting gas; 2) belt type roasting machine is maximum reaches 750m
2, single machine yield reaches more than 500t, and therefore, belt type roasting machine can adapt to the requirement expanded the scale of production and the requirement realizing maximization; 3) because in whole roasting process, pelletizing is all in quiet material layer state, can not because of low change and the relative utilization between ball with ball and produce powder during height during the intensity of pelletizing in temperature-rise period own, therefore, belt type roasting machine is adapted to all mineral substantially; 4) due to hot systems make a concerted effort arrange and pipeline short, in theory, the hear rate of belt type roasting machine can reach floor level, and has also createed preferably record in practice.
Its shortcoming is: 1) consumption of the high temperature resistant special alloy steel of belt type roasting machine is large, class is high, under the condition of production domesticization at present, have larger difficulty; Special being difficult in quality ensures; 2) due to comprise drying, preheating, roasting, cooling roasting overall process run all on one device, it is impossible for changing pelletizing in the residence time in each stage by adjustment machine speed, as changed, unless changed the segmentation of top bonnet and the configuration of bellows, this will be very troublesome, therefore, belt type roasting machine is in process of production, high to the stability requirement of raw material; 3) because pelletizing is in temperature-rise period, upper and lower bed of material length of the residence time under the maximum temperature of each section of bonnet differs greatly, thus the final strength of finished ball nodulizing can be had influence on, in addition, stove case temperature and the edge effect more or less existed on chassis, also can affect the quality of finished ball nodulizing; 4) belt type roasting machine must use the coal gas of high heat value and heavy oil to make fuel.By optimizing belt type roasting machine thermal regulation, the shortcoming of belt roasting technique can be reduced, improving the quality of pellet.
Application publication number is the control method that the Chinese invention patent of CN103045850A discloses preheating and roasting process in the production of a kind of belt type roasting machine, belongs to belt type roasting machine pellet production run control technology field.Its object is to judgement and control method that preheating and roasting two process sections in a kind of belt type roasting machine pelletizing production process are provided.See accompanying drawing 1, it is first to the regression fit of the least square method of the exhaust gas temperature of all bellows of burner section and latter two bellows of burner, and horizontal ordinate is the position of check point, and ordinate is the temperature of this check point, simulates 6 temperature curves; Carry out differentiate to curvilinear equation, obtain slope equation, the horizontal ordinate of slope maximum point is wherein exactly that preheating end point is as the foundation quantitatively dividing preheating and roasting.On the basis obtaining preheating end point, automatically adjust the rotating speed of main induced draft fan according to the setting value of preheating end point, achieve the automatic control of preheating end point.Thus stabilize belt type roasting machine pelletizing production process, improve the quality of pellet.
But, in the production of this belt type roasting machine, the control method of preheating and roasting process can only realize the preheating of burner section and the quality metric of roasting process on belt type roasting machine, and the automatic control of preheating end point is realized by adjustment main induced draft fan, and cannot realize carrying out global optimization to whole belt type roasting machine thermal regulation.
Summary of the invention
In view of this, the invention provides a kind of method optimizing belt type roasting machine thermal regulation, it can be optimized and revised for the thermal regulation of belt type roasting machine and provide foundation, thus is more suitable for practicality.
In order to achieve the above object, the present invention mainly provides following technical scheme:
The method of optimization belt type roasting machine thermal regulation provided by the invention comprises the following steps:
The three-dimensional model of belt type roasting machine is set up by computer software;
Analog computation is carried out to belt type roasting machine model;
Reprocessing analysis is carried out to the result of described analog computation;
According to the result of described reprocessing analysis, described belt type roasting machine thermal regulation is optimized.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
As preferably, software belt type roasting machine being carried out to analog computation is fluent software or CFX software.
As preferably, the three-dimensional model of belt type roasting machine is set up by gambit software or icem software.
As preferably, described three-dimensional model comprises chassis, multiple grid section, petticoat pipe, preheating section, furnace zone, soaking zone, cooling section, baffle plate, endless tube, burner, multiple bellows, described multiple grid section is arranged on described chassis, between each grid section, there is space, described preheating section, furnace zone, soaking zone, cooling section sets gradually, described baffle plate is arranged between described furnace zone and soaking zone, described preheating section and furnace zone is made to form relatively independent firing chamber, described endless tube is arranged at above described firing chamber, described burner is arranged on described endless tube, between the least significant end of described baffle plate and the bottom bed of material of described three-dimensional model, there is space, described petticoat pipe is arranged on the top of described preheating section, furnace zone, soaking zone, cooling section, described preheating section is connected by endless tube with the petticoat pipe be arranged at above it with furnace zone, and described multiple bellows are arranged in the bottom of described preheating section, furnace zone, soaking zone, cooling section respectively.
As preferably, the gap between described baffle plate and the described bottom bed of material is 5 ~ 20cm.
As preferably, the space between the bottom bed of material of described baffle plate and described three-dimensional model is 10cm.
As preferably, described when setting up the three-dimensional model of belt type roasting machine, also needing the model to setting up to carry out stress and strain model, making single mesh volume 10
-6~ 10
-3m
3between.
As preferably, when analog computation is carried out to belt type roasting machine model, mode input parameter comprises each box temperature of belt type roasting machine cooling section, the each bellows air quantity of belt type roasting machine cooling section, belt type roasting machine preheating section and each burner temperature of furnace zone, belt type roasting machine preheating section and soaking zone help fuel gas temperature, belt type roasting machine preheating section and soaking zone combustion air current amount, the top hole pressure of each bellows of belt type roasting machine preheating section, furnace zone and soaking zone.
As preferably, when carrying out analog computation to belt type roasting machine model, the parameter of carrying out arranging is needed to comprise energy, Viscosity Model parameter, combustion reaction parameter and condition of convergence parameter.
As preferably, the method of the result of described analog computation being carried out to reprocessing analysis is: set up multiple point, line, surface, temperature field in belt type roasting machine and flow field are comprehensively analyzed, according to the roasting quality of pellet, the belt type roasting machine thermal regulation after being optimized.
First the method for optimization belt type roasting machine thermal regulation provided by the invention sets up belt type roasting machine three-dimensional model by computer software, then analog computation is carried out to belt type roasting machine model, again reprocessing analysis is carried out to the result of analog computation, finally, according to the result of reprocessing analysis, can be optimized belt type roasting machine thermal regulation.It can carry out full-scope simulation to the thermal regulation of belt type roasting machine, therefore, according to the result of this reprocessing analysis, can carry out global optimization to whole belt type roasting machine thermal regulation.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 is the schematic diagram of the control method of preheating and roasting process in application publication number belt type roasting machine production disclosed in the Chinese invention patent of CN103045850A;
The logic diagram of the method for the optimization belt type roasting machine thermal regulation that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the three-dimensional model of the method belt type roasting machine of the optimization belt type roasting machine thermal regulation that Fig. 3 provides for the embodiment of the present invention.
Embodiment
The present invention solves the thermal regulation that prior art exists to make the problem of belt type roasting machine pellet quality, provide a kind of mode by computer simulation and three-dimensional simulation is carried out to belt type roasting machine, and be optimized according to the thermal regulation of analog result to belt type roasting machine, thus be more suitable for practicality.
Owing to there is the complicated physical and chemical process such as flowing, heat transfer and burning in belt type roasting machine, focus mostly in bed pelletizing material layer temperature to the research of belt type roasting machine at present, but because pelletizing material layer temperature and gas-fired provide heat to have very large associating, therefore there is great meaning to the analogue simulation research that burning machine carries out system to the temperature understood in burning machine, flow field and CONCENTRATION DISTRIBUTION etc., and then reference can be provided for the optimization of the thermal regulation of belt type roasting machine etc.
The present invention with the belt type roasting machine of certain steel mill for research object, consider the processes such as the burning in it, heat transfer, the combustion process occurred in it by numerical simulation and temperature field thereof and Flow Field Distribution, and with Thermal-state test data for foundation, verify the accuracy of numerical simulation, thus provide reference to the selection of operating conditions.
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the method for the optimization belt type roasting machine thermal regulation proposed according to the present invention, its embodiment, structure, feature and effect thereof, be described in detail as follows.In the following description, the not necessarily same embodiment that different " embodiment " or " embodiment " refers to.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
Term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, such as, A and/or B, concrete is interpreted as: can include A and B simultaneously, can individualism A, also can individualism B, above-mentioned three kinds of any one situations can be possessed.
Embodiment
See accompanying drawing 2, the method for optimization belt type roasting machine thermal regulation provided by the invention comprises the following steps:
Step 1: the three-dimensional model being set up belt type roasting machine by computer software, wherein the measurements of the chest, waist and hips model of this belt type roasting machine needs to determine according to the size of the belt type roasting machine be applied in actual production, can make like this to plan to build vertical belt type roasting machine measurements of the chest, waist and hips model and production reality is pressed close to more through computer software module, thus, when being optimized the thermal regulation of the belt type roasting machine applied in production practices, basis is stronger;
Step 2: application fluent software carries out analog computation to belt type roasting machine model, fluent is business computing fluid dynamics (ComputationalFluidDynamics popular in the world at present, be called for short CFD) software package, it can be used in simulating the Complex Flows be never compressible in highly compressible scope.Owing to have employed multiple method for solving and multi grid accelerating convergence technology, thus fluent software can reach best speed of convergence and solving precision.Unstructured grid and based on the adaptive mesh technique separated and the physical model of maturation flexibly, make fluent conversion and turbulent flow, conduct heat and phase transformation, chemical reaction and burning, polyphasic flow, rotating machinery, move/modified network, noise, materials processing, fuel cell etc. in be widely used, at present, except gambit software, icem software be also can with the standard network software of fluent software fit applications.The feature of fluent software is as follows:
1) fluent software adopts the finite volume method based on complete unstructured grid, and has the gradient algorithm based on grid node and grid cell; 2) permanent/unsteady gas flow simulation, and newly-increased quick unsteady flo w analog functuion; 3) in fluent software dynamic/warp mesh technology mainly solves the problem of Boundary motion, user only need specify the boundary condition of initial mesh and motion wall, and remaining grid change is generated automatically by solver completely.Distortion of the mesh mode has three kinds: spring compression type, dynamically laying formula and Local grid are lived again formula.Its Local grid formula of living again be fluent exclusive, and of many uses, can be used for the problem that power that unstrctured grid, the larger problem of distortion and object of which movement rule do not know in advance and produce by flowing completely determines; 4) fluent software has powerful grid tenability, supports the discontinuous grid in interface, hybrid grid, dynamic/warp mesh and Sliding mesh etc.It is emphasized that fluent software also has the technology that the multiple self-adaptation of grid, dynamic self-adapting technology and dynamic mesh based on separating combines with grid dynamic self-adapting; 5) fluent software package is containing three kinds of algorithms: non-coupled implicit algorithm, coupling explicit algorithm, coupling implicit algorithm are maximum in business software; 6) fluent software package is containing the abundant and physical model of advanced person, and user can accurately be simulated without viscosity flow, laminar flow, turbulent flow.Turbulence model comprises the simulation of Spalart-Allmaras model, k-ω model group, k-ε model group, reynolds stress model (RSM) group, large eddy simulation model (LES) group and up-to-date separated vorticcs (DES) and V2F model etc.User can also customize or add the turbulence model of oneself in addition; 7) Newtonian fluid, non-Newtonian fluid is applicable to; 8) heat transfer containing pressure/nature/mixed convection, the heat transfer of solid/fluid, radiation; 9) mixing/reaction of chemical composition; 10) Free Surface flow model, Euler's multiphase flow model, mixing multiphase flow model, Particle Phase model, hole Two-phase flow's separation, wet steam model; 11) thawing is dissolved/is solidified; Evaporation/condensation phase transition model; 12) Lagrangian tracking of discrete phase calculates; 13) heterogeneous body perviousness, inertia impedance, solid thermal conduction, porous media model (considering porous medium pressure jump); 14) fan, heating radiator take heat exchanger as the lumped parameter model of object; 15) inertia or noninertial system of coordinates, complex reference coordinate system and sliding mesh; 16) interface of continuing after sound wing interaction model; 17) acoustic model of the predicted flows bulk noise resolved based on meticulous flow field; 18) the volume source item of quality, momentum, heat, chemical composition; 19) database of abundant physical parameter; 20) INTERACTION PROBLEMS between magnetic fluid module main analog electromagnetic field and conductive fluid; 21) exchangeing problem of momentum, quality and heat between continuous fiber module main analog fiber and gas flowing; 22) high efficiency parallel computation function, provides multiple automatic/hand partitioning algorithm; Built-in MPI parallel mechanism increases substantially parallel efficiency.In addition, the peculiar balancing dynamic load function of fluent, guarantees that overall efficient parallel calculates; 23) fluent software provides friendly user interface, and provides second development interface (UDF) for user; 24) fluent software adopts C/C++ language compilation, thus substantially increases the utilization factor to calculator memory.25) in CFD software, fluent software uses one of maximum, most popular business software both at home and abroad at present.The Software for Design of fluent, based on " concept of CFD computer software group ", for the feature of the physical problem of each flowing, adopts the numerical solution being suitable for it to reach best in each side such as computing velocity, stability and precision.Owing to enumerating whole technical forces of FluentDynamicalInternational Belgium PolyFlow and FluentDynamicalInternational (FDI), (the former is the generally acknowledged company accounting for leading position in viscoelasticity and polymer flow dynamic simulated, the latter is based on the leading company in Finite Element Method CFD software aspect), therefore fluent has many advantages of above software.Fluent software has the advantages such as widely applicable, high efficiency and time conservation, pollutant generation.
In the present embodiment, belt type roasting machine three-dimensional model is that application gambit software is set up, and when setting up the three-dimensional model of belt type roasting machine, also needing the model to setting up to carry out stress and strain model, making single mesh volume 10
-6~ 10
-3m
3between.Gambit software has following characteristics:
1) the comprehensive 3 d geometric modeling ability on ACIS kernel basis, directly sets up point, line, surface, body in several ways, and has powerful Boolean calculation ability, and ACIS kernel rises to ACISR12.This function holds big lead over the front processor of other CAE software; 2) can the Journal file automatically generated be edited, automatically to control amendment or to generate new geometry and grid; 3) geometry and grid that most of CAD/CAE software such as PRO/E, UG, CATIA, SOLIDWORKS, ANSYS, PATRAN sets up can be imported.Importing process increases automatic tolerance newly and repairs geometric functions, to ensure stability and the fidelity of gambit and CAD software interface, makes almost T-stable high, and greatly alleviates the workload of slip-stick artist; 4) increase the direct interfaces such as PRO/E, CATIA newly, make importing process more direct and convenient; 5) powerful Geometric corrections function, can merge the point, line, surface overlapped automatically when importing geometry; Newly-increased Geometric corrections tool bar, when eliminating minor face, indentations sutured, repairing wedge angle, removing little, remove independent boost line and repairing chamfering more fast and automatically, flexibly, and accurately ensures the precision of solid; 6) G/TURBO module accurately and efficiently can generate geometric model and the computing grid of various fan in rotating machinery and rotor, stator etc.; 7) powerful stress and strain model ability, can divide the high-quality grid comprising the CFD particular/special requirements such as boundary layer.Reseau-dividing algorithm special in gambit can ensure directly to mark off high-quality tetrahedron, hexahedral mesh or hybrid grid in the geometric areas of complexity; 8) advanced hexahedron core (HEXCORE) technology be gambit exclusive, be integrated with the advantage of cartesian grid and unstrctured grid, use during this technology grid division and be more prone to, and greatly save number of grid, raising mesh quality; 9) size function (sizefunction) function occuping industry-leading status can make user can the independently generative process of control mesh and the regularity of distribution spatially, make the transition of grid and distribution more reasonable, meet the needs that CFD analyzes to greatest extent; 10) gambit highly intelligently can select Meshing Method, can mark off non-structured hybrid grid complete in adjacent area grid continuous print to extremely complicated geometric areas; 11) add new boundary-layer mesh generator in redaction, high-quality boundary-layer grid can be generated easily; 12) can be the solver such as FLUENT, POLYFLOW, FIDAP, ANSYS generate and derive required for grid and form.
In the present embodiment, when application fluent software carries out analog computation to belt type roasting machine model, mode input parameter comprises each box temperature of belt type roasting machine cooling section, the each bellows air quantity of belt type roasting machine cooling section, belt type roasting machine preheating section and each burner temperature of furnace zone, belt type roasting machine preheating section and soaking zone help fuel gas temperature, belt type roasting machine preheating section and soaking zone combustion air current amount, the top hole pressure of each bellows of belt type roasting machine preheating section, furnace zone and soaking zone; When application fluent software carries out analog computation to belt type roasting machine model, the parameter of carrying out arranging is needed to comprise energy, Viscosity Model parameter, combustion reaction parameter and condition of convergence parameter; The method of the result of analog computation being carried out to reprocessing analysis is: set up multiple point, line, surface, comprehensively analyzes the temperature field in belt type roasting machine and flow field, according to the roasting quality of pellet, and the belt type roasting machine thermal regulation after being optimized.
Step 3: reprocessing analysis is carried out to the result of analog computation;
Step 4: according to the result of reprocessing analysis, is optimized belt type roasting machine thermal regulation.
See accompanying drawing 3, in the method for optimization belt type roasting machine thermal regulation provided by the invention, three-dimensional model comprises chassis 10, multiple grid section, petticoat pipe 8, preheating section 1, furnace zone 2, soaking zone 3, cooling section 4, baffle plate 7, endless tube 5, burner 6, multiple bellows 9, multiple grid section is arranged on chassis 10, has space between each grid section, preheating section 1, furnace zone 2, soaking zone 3, cooling section 4 sets gradually, and baffle plate 7 is arranged between furnace zone 2 and soaking zone 3, and make preheating section 1 and furnace zone 2 form relatively independent firing chamber, petticoat pipe 8 is arranged on preheating section 1, furnace zone 2, soaking zone 3, the top of cooling section 4, preheating section 1 is connected by endless tube 5 with the petticoat pipe 8 be arranged at above it with furnace zone 2, the caliber of endless tube 5 is less, structure also can increase the stroke of heat smoke, therefore, it is possible to extend the working time of heat smoke at preheating section 1 and furnace zone 2, thus, the heat that prolongation heat smoke and gas-fired produce carries out the time of heat exchange, makes heat smoke can reach the temperature of its needs when arriving each section.Burner 6 is arranged on endless tube 5.Bottom preheating section 1, furnace zone 2, soaking zone 3, there is negative pressure, as the outlet of heat smoke.The air that heats through the cooling section bed of material of the overwhelming majority is made directly not enter furnace zone 2 and preheating section 1 by baffle plate 7 and first by top petticoat pipe, so mainly prevent the air after cooling section heating from entering furnace zone, although air be heated, but from the high temperature requirement (1250 DEG C) needed for roasting, also there is a big difference, make the air after being heated by cooling section by top petticoat pipe then enter endless tube can with burning after coal gas heat exchange heat up, can pellet roasting be reached temperature required.Wherein, gap d between baffle plate 7 and the bottom bed of material is 5 ~ 20cm, this gap exists mainly because below is the bed of material, due in actual production process, the thickness of the bed of material is not unalterable, there is gap is exactly in order to contingency Production requirement, and needing to strengthen output will increase thickness of feed layer so undoubtedly, and this gap then can respond reduction.In the present embodiment, the gap d between baffle plate 7 and the bottom bed of material is 10cm.This 10cm gap is exactly the bed of material and baffle spacing in normal productive process, select 10cm be exactly from production angle and in order to better heating cycle (make as far as possible cooling air after top petticoat pipe and fuel gas buring heat exchange again with pelletizing heat exchange, because gas flow is controlled, can better control roasting system like this) to weigh mutually and fixed.
The specific works process of belt type roasting machine is as follows:
Belt type roasting machine to be mainly used for producing pellet, pellet is layered on chassis uniformly, expect that thick is 400-500mm, so-called chassis is just similar to the crawler belt of tank, end to end, crawler belt there is metal grid section, space is had between grid section and grid section, the effect of grid section makes the pelletizing on chassis be unlikely to fall into below bellows and wind can be made to pass through, concrete chassis position, shape roughly as shown in Figure 3, machine speed is about 4m/min, pelletizing and chassis geo-stationary, velocity reversal is from preheating section to furnace zone, soaking zone, cooling section moves, preheating section, furnace zone, soaking zone, cooling section is all the heating relative to pellet, course of reaction, pelletizing through cooling section can fall the operation of carrying out next step from chassis, chassis after being separated with pelletizing proceeds cloth before then moving to beginning preheating section by bottom, thus circulation.
In belt roasting and the course of work, the cyclic process of wind is: first cooling air passes through from cooling section bellows, petticoat pipe is entered then by after the coal gas mixing of burning in endless tube and burner through great majority after the pelletizing heating of the grid section on chassis and grid section top, enter preheating section and furnace zone, the combination gas of preheating section can make pelletizing progressively be heated to spend 900 more, furnace zone can make pelletizing progressively be heated to spend 1200 more, is directly taken away by the bellows of the band negative pressure of below after the gas-heated pelletizing of preheating section and furnace zone.Pelletizing enters soaking zone after furnace zone, and pelletizing is and the hot air after cooling section heating that two is that soaking zone is shorter, and pelletizing can not stop for a long time, and does not have fuel gas buring, and temperature variation is little, so be called soaking zone at soaking zone one.Pelletizing enters cooling section after soaking zone, the air themperature that below cooling section, bellows air blast is come in is normal temperature, so apse rate is larger, be referred to as cooling section, preheating section and furnace zone is entered gas great majority after cooling section heating enter the combustion gas mixing of endless tube and burning by petticoat pipe after, other part directly contacts with the pelletizing of soaking zone then to be taken away by the bellows below soaking zone, preheating section, all negative pressure below furnace zone and soaking zone, baffle plate due to gap little, and also have negative pressure below soaking zone, so only have little gas to enter furnace zone from soaking zone by gap below baffle plate.Generally speaking, for whole system, gas income is mainly cooling section air blast, being secondly the flue gas that fuel gas buring produces, exporting as being discharged by bellows below preheating section, furnace zone and soaking zone.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. optimize a method for belt type roasting machine thermal regulation, it is characterized in that, comprise the following steps:
The three-dimensional model of belt type roasting machine is set up by computer software;
Analog computation is carried out to belt type roasting machine model;
Reprocessing analysis is carried out to the result of described analog computation;
According to the result of described reprocessing analysis, described belt type roasting machine thermal regulation is optimized.
2. the method for optimization belt type roasting machine thermal regulation according to claim 1, is characterized in that, software belt type roasting machine being carried out to analog computation is fluent software or CFX software.
3. the method for optimization belt type roasting machine thermal regulation according to claim 2, is characterized in that, the three-dimensional model of belt type roasting machine is set up by gambit software or icem software.
4. the method for optimization belt type roasting machine thermal regulation according to claim 3, it is characterized in that, described three-dimensional model comprises chassis, multiple grid section, petticoat pipe, preheating section, furnace zone, soaking zone, cooling section, baffle plate, endless tube, burner, multiple bellows, described multiple grid section is arranged on described chassis, between each grid section, there is space, described preheating section, furnace zone, soaking zone, cooling section sets gradually, described baffle plate is arranged between described furnace zone and soaking zone, described preheating section and furnace zone is made to form relatively independent firing chamber, described endless tube is arranged at above described firing chamber, described burner is arranged on described endless tube, between the least significant end of described baffle plate and the bottom bed of material of described three-dimensional model, there is space, described petticoat pipe is arranged on the top of described preheating section, furnace zone, soaking zone, cooling section, described preheating section is connected by endless tube with the petticoat pipe be arranged at above it with furnace zone, and described multiple bellows are arranged in the bottom of described preheating section, furnace zone, soaking zone, cooling section respectively.
5. the method for optimization belt type roasting machine thermal regulation according to claim 4, is characterized in that, the gap between described baffle plate and the described bottom bed of material is 5 ~ 20cm.
6. the method for optimization belt type roasting machine thermal regulation according to claim 5, is characterized in that, the space between the bottom bed of material of described baffle plate and described three-dimensional model is 10cm.
7. the method for optimization belt type roasting machine thermal regulation according to claim 4, is characterized in that, described when setting up the three-dimensional model of belt type roasting machine, also needing the model to setting up to carry out stress and strain model, making single mesh volume 10
-6~ 10
-3m
3between.
8. the method for optimization belt type roasting machine thermal regulation according to claim 4, it is characterized in that, when analog computation is carried out to belt type roasting machine model, mode input parameter comprises each box temperature of belt type roasting machine cooling section, the each bellows air quantity of belt type roasting machine cooling section, belt type roasting machine preheating section and each burner temperature of furnace zone, belt type roasting machine preheating section and soaking zone help fuel gas temperature, belt type roasting machine preheating section and soaking zone combustion air current amount, the top hole pressure of each bellows of belt type roasting machine preheating section, furnace zone and soaking zone.
9. the method for optimization belt type roasting machine thermal regulation according to claim 4, it is characterized in that, when carrying out analog computation to belt type roasting machine model, the parameter of carrying out arranging is needed to comprise energy, Viscosity Model parameter, combustion reaction parameter and condition of convergence parameter.
10. the method for optimization belt type roasting machine thermal regulation according to claim 4, it is characterized in that, the method of the result of described analog computation being carried out to reprocessing analysis is: set up multiple point, line, surface, temperature field in belt type roasting machine and flow field are comprehensively analyzed, according to the roasting quality of pellet, the belt type roasting machine thermal regulation after being optimized.
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| CN110096758A (en) * | 2019-04-09 | 2019-08-06 | 天津大学 | A kind of multi-purpose project flood-discharging energy dissipater parametrization dynamic design approach |
| CN110781623A (en) * | 2019-10-23 | 2020-02-11 | 北京理工大学 | Unit interface generation method for finite volume method |
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| CN110096758A (en) * | 2019-04-09 | 2019-08-06 | 天津大学 | A kind of multi-purpose project flood-discharging energy dissipater parametrization dynamic design approach |
| CN110096758B (en) * | 2019-04-09 | 2023-05-23 | 天津大学 | Parameterized dynamic design method for flood discharge energy dissipater of hub engineering |
| CN110781623A (en) * | 2019-10-23 | 2020-02-11 | 北京理工大学 | Unit interface generation method for finite volume method |
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