Research About Strengthen Heat Transfer Simulation Of The Radiation Intermediate In Flame Furnace

The iron and steel enterprise is the major industrial of energy consumption,while the flame furnace is the consumer of enormous energy in the.iron and steel enterprise.In view of the energy consumption and quantity of flame furnace are extremely significant,so,how to further energy saving in the existing production process is an important issue,also is an inevitable choice for achieving green production,taking an energy conservation and environmental protection new road to industrialization.Now,the study of flame furnace energy conservation and emissions reduction methods involve two major fields:One is to increase the heat transfer of furnace and the other is to reinforce recycling exhaust heat.Because the high temperature in the furnace,the heat transfers mainly by radiation,at the same time,the characteristics of the radiation heat transfer is the heat transfer quantity at a rate proportional to the fourth power of the radiation temperature pressure in furnace.Based on analyzing and summarizing the existing technical schemes to strengthen the heat transfer of the furnace,this paper presents the concept of radiation intermediate bodies and the research is carried out from the following several aspects:Firstly,establish the model of the two dimensional space.in the flame furnace.Using Monte Carlo method to obtain each matrix of total radiant exchange area,due to the surface shape of radiation intermediate body is irregular,this method can avoid solving the radiation direct exchange area between each section,it also avoids the multiple integrals of the traditional method.Secondly,list the energy balance equations of furnace heat exchange in Zone-method,and solve the equations with main variable-correction method;Using one-dimensional unsteady state heat conduction equation describe the billet heating process,and adopt the finite difference method to solve it.The two groups of equation work together,each one provides a boundary condition for the other.Finally,analyze the temperature field after roof-mounted radiation intermediate bodies by numerical simulation in a condition of continuous reheating furnace.Change the three of radiation intermediate bodies in turns,the blackness,the radius and the position,observe and evaluate the influence of the three parameters on the temperature field,thus obtain the ideal physical parameters of radiation intermediate bodies:ideal blackness is 0.9,ideal radius is 0.15m,the ideal location are preheating section,heating section and soaking section arranged as the three sections.This provide the theoretical basis for the production and the application of radiation intermediate bodies in the future.