Parametric Modeling And Finite Element Analysis Of Cement Preheater Cyclone

The main parts of a cyclone in a cement preheater system are non-standard parts.In setting up a new cement preheater system,all of them need to be designed again.Although those corresponding parts have the similar geometrical shape,the parameters for those corresponding parts in different systems must be redesigned independently.So far,there is no systematic drawings library under classification management.At home and abroad,there is no systematic and accurate research on the 3D parameter design for the cement preheater cyclone.It is also rare in studying the coupling of particle motion and flow field inside the cyclone of a cement rotary kiln NSP preheater.Considering the complicated and low efficiency in designing a preheater cyclone equipment,this thesis employed Inventor API interface technology to realize fast 3D parametric design for the non-standard pieces of cyclone,immersion tube and other standard parts.Visual Basic language is used to communicate the Inventor parametric model and the user interface with data sources by Active X Data Objects(ADO)technology.Using this parametric design interface,cyclone 3D model can be generated directly and the design period of a preheater cyclone can be reduced significantly.Furthermore,the 3D parameter driven system offers a convenient parameter inquire and modification.The design model was used in practical engineering projects that proven the convenient and reliability of the design system.Based on the design system,3D flow fluid model for a cyclone is set up.The finite element software-Comsol of gas-solid two-phase flow field was employed to conduct CFD simulation,modify and optimize some structure parameters and operation parameters.Comparing the simulation results in different parameters and taking to account the practical engineering projects,some parameters for certain parts are optimized in order to increase separation efficiency and reduce system resistance.Based on this study,the preheater modification of Ibese project and the cyclone design in Obajana Line 5 project have been adjusted.After the modification of the preheater system in Ibese project,the separation efficiency increased from 89.16% to 95.68%.Clear guidance was given to the design in Obajana Line 5 project,the immersion tube depth and inlet wind speed were adjusted,the system was expected that separation efficiency increased from 92.98% to 94.17%,system resistance reduced by 560 Pa and the clinker output increased from 242.03t/h to 250.06t/h.