Simulation on mixing granular materials in screw conveyor

doi:10.11949/j.issn.0438-1157.20171196

CIESC Journal ›› 2018, Vol. 69 ›› Issue (1): 371-380.DOI: 10.11949/j.issn.0438-1157.20171196

Previous Articles Next Articles

Simulation on mixing granular materials in screw conveyor

QI Huabiao¹, XU Ji¹, SONG Wenli¹, GE Wei^1,2

1 State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2017-08-30 Revised:2017-10-20 Online:2018-01-05 Published:2018-01-05
Contact: 10.11949/j.issn.0438-1157.20171196
Supported by:
supported by the "Strategic Priority Research Program" of the Chinese Academy of Sciences (XDA07080000), the National Natural Science Foundation of China (91434201), the Key Research Program of Frontier Science, CAS (QYZDJ-SSW-JSC029) and the CAS Interdisciplinary Innovation Team.

螺旋输送器中颗粒混合过程的模拟

戚华彪¹, 徐骥¹, 宋文立¹, 葛蔚^1,2

1 中国科学院过程工程研究所多相复杂系统国家重点实验室, 北京 100190;
2 中国科学院大学化学化工学院, 北京 100049

通讯作者: 葛蔚
基金资助:
中国科学院战略性先导科技专项（XDA07080000）；国家自然科学基金项目（91434201）；中国科学院前沿科学重点研究项目（QYZDJ-SSW-JSC029）；中国科学院科技创新交叉与合作团队。

Abstract

Abstract:

Flowing and mixing granular materials of two different sizes and densities in an industrial-scale screw conveyor was studied by computer simulation using the discrete element method(DEM). Quantitative analysis results by the Lacey mixing index showed that mixing performance of the screw conveyor was dependent strongly on operational conditions and structural dimensions. Both screw rotating speed and material feeding rate had dominant effects on mixing efficiency, followed by granular material sizes and screw pitch in the mixing region. To reduce energy consumption and improve mixing performance in production, reasonable operation parameters of screw conveyors could be selected according to these findings.

Key words: granular material, discrete element method, screw conveyor, mixing mechanism, large-scale simulation

摘要：

采用离散单元法（discrete element method，DEM）模拟了工业尺度螺旋输送器中两种不同密度与粒径的颗粒的流动状态与混合过程。采用Lacey混合指标的定量分析表明，该输送器的混合性能强烈地依赖于操作条件和结构尺寸，转速和物料的添加速率对混合效果影响最大，其次是混合段螺距和物料粒径。根据工业生产的具体要求，可参考上述发现合理地选择技术参数、提高混合效率、降低能耗。

关键词: 颗粒, 离散单元法, 螺旋输送器, 混合机理, 大规模模拟

CLC Number:

TQ536.9

QI Huabiao, XU Ji, SONG Wenli, GE Wei. Simulation on mixing granular materials in screw conveyor[J]. CIESC Journal, 2018, 69(1): 371-380.

戚华彪, 徐骥, 宋文立, 葛蔚. 螺旋输送器中颗粒混合过程的模拟[J]. 化工学报, 2018, 69(1): 371-380.

References 30

[1]	陈汝超, 陈晓平, 蔡佳莹, 等. 粒煤螺旋输送特性实验研究[J]. 煤炭学报, 2012, 37(1):154-157. CHEN R C, CHEN X P, CAI J Y, et al. Screw conveying characteristics of granular coal from screw conveyor[J]. Journal of China Coal Society, 2012, 37(1):154-157.
[2]	屈少敏. 一种散粮螺旋输送机螺旋体的优化设计[J]. 西部粮油科技, 2000, 25(4):13-15. QU S M. An optimal design of the screw in a screw conveyor for transport grain[J]. Grain Processing, 2000, 25(4):13-15.
[3]	范建平. 螺旋气力取料装置分离机理研究[D]. 武汉:武汉理工大学, 2008. FAN J P. Study on the separation mechanism of screw-pneumatic reclaimer[D]. Wuhan:Wuhan University of Technology, 2008.
[4]	张杰, 高铁瑜, 渠亚东, 等. 微细微量螺旋加料器的试验研究[J]. 热能动力工程, 2004, 19(3):278-280. ZHANG J, GAO T Y, QU Y D, et al. The experimental study of microscale screw feeder[J]. Journal of Engineering for Thermal Energy and Power, 2004, 19(3):278-280.
[5]	师红梅. 螺旋输送机在制粉工艺上的改进[J]. 现代机械, 2006, 6:87-90. SHI H M. Improvement of the screw conveyor in the powder process[J]. Modern Machinery, 2006, 6:87-90.
[6]	江继辉. 混凝土搅拌输送车搅拌筒搅拌过程的运动分析[J]. 工程机械, 1991, 2:28-30. JIANG J H. The motion analysis of the mixing process of the concrete in a screw conveyor[J]. Construction Machinery and Equipment, 1991, 2:28-30.
[7]	仝晓波, 申春梅, 吴少华, 等. 煤拔头半焦燃烧特性[J]. 过程工程学报, 2009, 9(5):897-903. TONG X B, SHEN C M, WU S H, et al. Combustion characteristics of char from coal topping process[J]. The Chinese Journal of Process Engineering, 2009, 9(5):897-903.
[8]	王杰广, 吕雪松, 姚建中, 等. 下行床煤拔头工艺的产品产率分布和液体组成[J]. 过程工程学报, 2005, 5(3):241-245. Wang J G, LÜ X S, YAO J Z, et al. Total distribution and liquid composition of products from coal topping process in a downer reactor[J]. The Chinese Journal of Process Engineering, 2005, 5(3):241-245.
[9]	申春梅, 吴少华, 林伟刚,等. 煤拔头中低温快速热解烟煤半焦的孔隙结构[J]. 过程工程学报, 2010, 10(3):522-529. SHEN C M, WU S H, LIN W G, et al. Pore structure of low temperature and fast pyrolysis bituminous semi-char from coal topping process[J]. The Chinese Journal of Process Engineering, 2010, 10(3):522-529.
[10]	申春梅, 吴少华, 林伟刚,等. 煤拔头烟煤焦的物质组成及碳结构[J]. 热能动力工程, 2011, 26(1):100-104. SHEN C M, WU S H, LIN W G, et al. The material composition and carbon structure of bituminous char from coal topping process[J]. Journal of Engineering for Thermal Energy and Power, 2011, 26(1):100-104.
[11]	纪文峰, 董利, 汪印, 等. 循环流化床煤热解拔头工艺循环颗粒流分配[J]. 过程工程学报, 2010, 10(2):215-220. JI W F, DONG L, WANG Y, et al. Circulating granular flow partition in pyrolytic topping of coal with a circulating fluidized bed[J]. The Chinese Journal of Process Engineering, 2010, 10(2):215-220.
[12]	CUNDALL P A, STRACK O D L. A discrete numerical model for granular assemblies[J]. Geotechnique, 1979, 29(1):47-65.
[13]	SHIMIZU Y, CUNDALL P A. Three-dimensional DEM simulations of bulk handling by screw conveyors[J]. Journal of Engineering Mechanics, 2001, 127(9):864-872.
[14]	OWEN P J, CLEARY P W. Prediction of screw conveyor performance using the discrete element method (DEM)[J]. Powder Technology, 2009, 193(3):274-288.
[15]	HASTIE D B, WYPYCH P. Experimental validation of particle flow through conveyor transfer hoods via continuum and discrete element methods[J]. Mechanics of Materials, 2010, 42(4):383-394.
[16]	李海燕. 基于EDEM的垂直螺旋输送机性能参数仿真研究[D]. 太原:太原科技大学, 2011. LI H Y. Simulation study of performance parameters of a vertical screw conveyor based on EDEM[D]. Taiyuan:Taiyuan University of Science and Technology, 2011.
[17]	SARKAR A, WASSGREN C R. Comparison of flow microdynamics for a continuous granular mixer with predictions from periodic slice DEM simulations[J]. Powder Technology, 2012, 221:325-336.
[18]	GAO Y, MUZZIO F J, IERAPETRITOU M G. Optimizing continuous powder mixing processes using periodic section modeling[J]. Chemical Engineering Science, 2012, 80:70-80.
[19]	冷冰冰. 基于Fluent的螺旋输送机输送机理初步研究[D]. 太原:太原科技大学, 2007. LENG B B. A preliminary study on conveying mechanism of screw conveyor based on Fluent[D]. Taiyuan:Taiyuan University of Science and Technology, 2007.
[20]	XU J, GE W, LI J H. DEMMS V3.0:2014SRBJ0786[P]. 2014-12-19.
[21]	REN X X, XU J, QI H B, et al. GPU-based discrete element simulation on a tote blender for performance improvement[J]. Powder Technology, 2013, 239:348-357.
[22]	REN X X, ZHOU G Z, XU J, et al. Numerical analysis of enhanced mixing in a Gallay tote blender[J]. Particuology, 2016, 29(6):95-102.
[23]	YU F H, ZHOU G Z, XU J, et al. Enhanced axial mixing of rotating drums with alternately arranged baffles[J]. Powder Technology, 2015, 286:276-287.
[24]	戚华彪. 基于GPU的离散模拟在颗粒流动与混合机理研究中的应用[D]. 北京:中国科学院大学, 2014. QI H B. Application of GPU-based discrete simulation to the study of flow and mixing mechanisms of granular materials[D]. Beijing:University of Chinese Academy of Sciences, 2014.
[25]	韩健. 煤灰颗粒与平板表面冷态惯性撞击机理研究[D]. 大连:大连理工大学, 2013. HAN J. Mechanism research on inertial impact process between ash particle and planar surface at normal temperature state[D]. Dalian:Dalian University of Technology, 2013.
[26]	黄中伟, 李根生, 王开龙, 等. 基于离散单元法的筛管内煤灰颗粒通过性分析[J]. 煤炭学报, 2012, 37(12):2083-2086. HUANG Z W, LI G S, WANG K L, et al. Analysis of coal particles passing slotted screen based on discrete element method[J]. Journal of China Coal Society, 2012, 37(12):2083-2086.
[27]	DONG K J, YU A B, BRAKE I. DEM simulation of particle flow on a multi-deck banana screen[J]. Minerals Engineering, 2009, 22(11):910-920.
[28]	TANAKA K, NISHIDA M, KUNIMOCHI T, et al. Discrete element simulation and experiment for dynamic response of two-dimensional granular matter to the impact of a spherical projectile[J]. Powder Technology, 2002, 124:160-173.
[29]	CHEN H, XIAO Y, LIU Y, et al. Effect of Young's modulus on DEM results regarding transverse mixing of particles within a rotating drum[J]. Powder Technology. 2017, 318:507-517.
[30]	LACEY P M C. Developments in the theory of particle mixing[J]. Journal of Applied Chemistry, 1954, 4(5):257-268.

Simulation on mixing granular materials in screw conveyor

螺旋输送器中颗粒混合过程的模拟

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References 30

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Yuyuan ZHENG, Zhiwei GE, Xiangyu HAN, Liang WANG, Haisheng CHEN. Progress and prospect of medium and high temperature thermochemical energy storage of calcium-based materials [J]. CIESC Journal, 2023, 74(8): 3171-3192.
[2]	Yilin LIU, Yu LI, Yaxiong YU, Zheqing HUANG, Qiang ZHOU. Construction of two parameter mesoscale heat transfer model for gas-solid flow based on resetting temperature method [J]. CIESC Journal, 2022, 73(6): 2612-2621.
[3]	Tianqi TANG, Yurong HE. Effect of magnetic field on the mesoscale structure evolution process in a wet particle fluidized bed [J]. CIESC Journal, 2022, 73(6): 2636-2648.
[4]	Xing TIAN, Jiayue ZHANG, Zhigang GUO, Jian YANG, Qiuwang WANG. Flow and heat transfer characteristics of particles flowing along the plate with different mixing elements [J]. CIESC Journal, 2022, 73(11): 4884-4892.
[5]	Daoming LU, Zhaoting TANG, Yiping FAN, Chunxi LU. Performance of large-difference-particle air classifier [J]. CIESC Journal, 2021, 72(8): 4184-4195.
[6]	HOU Yongjun, ZHU Jingtao, LI Huachuan, WU Xianjin, JIANG Rui. DEM numerical simulation on rotary vibrating screen under balanced motion [J]. CIESC Journal, 2021, 72(5): 2706-2717.
[7]	JIN Mo, LIU Daoyin, CHEN Xiaoping. Numerical simulation research of high-alkali coal ash deposition process based on discrete element method [J]. CIESC Journal, 2021, 72(4): 1939-1946.
[8]	Runmei MA, Xiang ZHAO, Shuangxi LI, Xinghua LIU, Can XU. Research on thermal mechanical coupling deformation and friction and wear of mechanical seal for granular medium [J]. CIESC Journal, 2021, 72(11): 5726-5737.
[9]	Yingze LI, Lu YANG, Qi WANG, Siyu YANG. Modeling and simulation of gasification process in BGL furnace [J]. CIESC Journal, 2020, 71(3): 1174-1188.
[10]	Zhoutuo TAN,Zhigang GUO,Jian YANG,Qiuwang WANG. Numerical investigation on flow and heat transfer performance of gravity-driven granular flowing across inverted drop-shaped tube [J]. CIESC Journal, 2019, 70(S2): 94-100.
[11]	Chengquan ZHANG, Jun GAO, Lipeng LYU, Lianjie HE. Resistance characteristics of bed packed with mono-size cylindrical particles [J]. CIESC Journal, 2019, 70(11): 4181-4190.
[12]	Zhan DU. Thermodynamic studies on behavior of newly formed metallic iron on surface of particles [J]. CIESC Journal, 2019, 70(11): 4143-4152.
[13]	LI Bin, ZHANG Shangbin, ZHANG Lei, TENG Zhaoyu, WANG Youtian. Numerical simulation of bubble-particle flow in bubbling bed based on LBM-DEM [J]. CIESC Journal, 2018, 69(9): 3843-3850.
[14]	LI Bin, YU Yang, MA Mengxiang, ZHANG Lei, CHEN Cuiling. Numerical simulation of mixing different sized wet and dry particles in three-dimensional spouted bed [J]. CIESC Journal, 2017, 68(12): 4545-4555.
[15]	WANG Qing, LI Jian, WANG Zhichao, ZHANG Lidong. Numerical simulation on characteristics of heat transfer between particles in rotary retorting [J]. CIESC Journal, 2017, 68(11): 4137-4146.