COREX process is one of the earliest industrialized smelting reduction ironmaking technology. A numerical simulation model based on discrete element method (DEM) has been developed to analyze the burden distribution in the melter gasifier of COREX process. The DEM considering the collisions between particles can directly reproduce the charging process. The burden trajectory, the location and the burden surface profile are analyzed in melter gasifier with a mixing charging of coal and direct reduction iron (DRI) at the same time. Considering the porosity of packed bed has an important effect on the gas flow distribution of melter gasifier, a method to calculate porosity has been proposed. The distribution of DRI and coal and the porosity in the radial direction are given under different charging patterns, which is necessary to judge the gas flow distribution and provide base data for further researching the melter gasifier for the next work in the future. The research results can be used to guide the operation of adjusting charging and provide important basis for optimizing the charging patterns in order to obtain the reasonable gas distribution.
参考文献
| [1] | |
| [2] | Du Hegui, Yu Aibing. Simulation study on burden on burden distribution in bell-less top blast furnace [J]. Iron Making. 1986. 21(11): 1.[2] Du Hegui, Du Gang. A Simulation study on burden profiles in burden distribution of bell-less top blast furnace [J]. Iron & steel. 1989. 5(24): 16.[3] Du Hegui, Xie Guohai. A Simulation study on gas flow profiles in burden distribution of bell-less top blast furnace [J]. Iron Making. 1989. (5): 48.[4] Kajiwara Yoshimasa, Jimbo Takao, Sakai Toshihiko. Investigations of bell-less charging based on full scale model experiments [J]. Trans ISIJ, 1984.24: 799.[5] Kajiwara Yashimasa, Jimbo Takao, Sakai Toshihiko. Development of a simulation model for burden distribution at blast furnace top [J]. ISIJ international, 1983, (12): 1045.[6] Yang Tianjan, Duan Guomian, Zhou Yusheng, et.al. Mathematical model of burden distribution for bell-less top of blast furnace [J]. Iron & steel. 1991, 26(11): 10.[7] ZHANG Jianliang, ZHANG Xuesong, GUO Hongwei, et al. Mathematic Model of Loop Charging in Bell-Less Top [J]. Iron & steel. 2008, 43 (2): 19.[8] YU Yaowei, BAI Chenguang, LIANG Dong, et al. A Mathematical Model for Bell--Less Top Charging [J]. Iron & steel. 2008. 43(11): 26.[9] Che Yuman, Li Liancheng, Sun Bo, et al. Development and Application of Burden Distribution Mathematical Model of Bell-less Blast Furnace in Angang [J]. Angang Technology. 2008. 353(5): 16.[10] LIU Yuncai. The charging law of blast furnace (Version 3)[M]. Beijing, Metallurgical Industry Press. 2005.[11] Hiroshi MIO, Satoshi KOMATSUKI, et al. Effect of Chute Angle of Charging Behavior of Sintered Ore Particles at Bell-less Type Charging System of Blast Furnace by Discrete Element Method [J]. ISIJ International, 2009, 49 (4): 479.[12] Yu Y W, Henrik S. Experimental and DEM study of segregation of ternary size particles in a blast furnace top bunker model [J]. Chemical Engineering Science, 2010, 10 16(10): 1.[13] DU Pengyu, CHENG Shusen, TENG Zhaojie. Measurement of charging trajectory in bell-less top burden of blast furnace and 3-D image reconstruction [J]. Metallurgical Industry Automation, 2009, 33(6): 1.[14] Cundall P.A and Strack O.D.L. A discrete numerical model for granular assemblies [J]. Geotechnique, 1979, 29(1): 47.[15] Wang Yongjia. Discrete Element Method——A Numerical Method Suitable for analysis in Jointed Rocks [C]. First National Rock Mechanics and model test numerical Proceedings of Symposium. Jiang xi, Ji-an: Southwest Jiaotong University Press, 1986, 32.[16] HOU Yanli, ZHANG Chuhan. Mode I—fracture simulation of concrete based on 3D distinct element method [J]. Engineering Mechanics, 2007, 24(1): 37.[17] Jiao Yuyong. Three-dimensional discrete element method and its application [J]. Chinese Journal of Rock Mechanics and Engineering, 1999, 22(2): 216.[18] Yu Jianqun, Fu Hong, Li Hong, et al. Application of discrete element method to research and design of working parts of agricultural machines [J]. Transactions of the Chinese Society of Agricultural Engineering, 2005, 21(5): 1.[19] Zhu H P, Zhou Z Y, Yang R Y, and Yu A B. Discrete particle simulation of particulate systems: Theoretical developments [J], Chemical Engineering Science, 2007, 62: 3378. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%