DEM simulation of a single screw granulator: The effect of liquid binder on granule properties

被引：4

作者：

Arthur, Tony B. ^{[1
]}

Sekyi, Nana K. G. ^{[1
]}

Rahmanian, Nejat ^{[1
]}

机构：

[1] Univ Bradford, Fac Engn & Digital Technol, Informat, Sch Engn, Bradford BD7 1DP, England

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2024年 / 203卷

关键词：

Granules; Liquid binder concentration; Surface energy; Variable density extruder; DEM; RESIDENCE TIME DISTRIBUTION; SHEAR WET GRANULATION; FLUIDIZED-BED; NUMERICAL-SIMULATION; PROCESS VARIABLES; SURFACE-ENERGY; CONTACT; MODEL; FLOW;

D O I：

10.1016/j.cherd.2024.01.028

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The Caleva UK single-screw Variable Density Extruder (VDE) is a continuous powder processing equipment known for spheronization and extrusion. Its suitability for granulation remains uncertain, a common challenge in powder processing industries that deal with granules, pellets, and tablets. This study investigates the VDE's potential for granulation, using 65 mu m CaCO3 powder and PEG 4000 as a liquid binder. In order to replicate several experimental setups with varying binder concentrations and liquid-to-solid ratios (L/S) of 0.1 and 0.15, eight DEM simulations were run. Our results indicate that higher binder concentrations yield more consistent products with fewer fines, while lower concentrations result in inconsistent products with increased fines. Low L/ S ratios produce fragile, fine-sized products with a broad particle size distribution (PSD). DEM simulations reveal a direct relationship between liquid binder content and contact forces. Analysis of bonds formed, and particle counts in simulations corroborates experimental observations of fines production. Additionally, granule strength appears to be directly proportional to contact force.

引用

页码：233 / 242

页数：10

共 47 条

[11] Influence of process conditions on the product properties in a continuous fluidized bed spray granulation process [J].

Diez, E. ;

Meyer, K. ;

Bueck, A. ;

Tsotsas, E. ;

Heinrich, S. .

CHEMICAL ENGINEERING RESEARCH & DESIGN, 2018, 139 :104-115

[12] Discrete particle simulation in horizontally rotating drum: Uncertainty quantification of granular material physical parameters [J].

Fernandes, Pedro M. A. ;

Chaves Pereira, Jose M. ;

Pereira, Jose C. F. .

POWDER TECHNOLOGY, 2018, 339 :199-210

[13] The hertzian contact surface [J].

Fischer-Cripps, AC .

JOURNAL OF MATERIALS SCIENCE, 1999, 34 (01) :129-137

[14]

Fujihashi D., 2014, J SOC POWDER TECHNOL, V51, P828

[15] Determination of coalescence kernels for high-shear granulation using DEM simulations [J].

Gantt, Justin A. ;

Cameron, Ian T. ;

Litster, James D. ;

Gatzke, Edward P. .

POWDER TECHNOLOGY, 2006, 170 (02) :53-63

[16] RELATIONSHIPS BETWEEN RESIDENCE TIME AND PROCESS VARIABLES IN A COROTATING TWIN-SCREW EXTRUDER [J].

GOGOI, BK ;

YAM, KL .

JOURNAL OF FOOD ENGINEERING, 1994, 21 (02) :177-196

[17] Numerical Investigation of the Particle Dynamics in a Rotorgranulator Depending on the Properties of the Coating Liquid [J].

Grohn, Philipp ;

Heinrich, Stefan ;

Antonyuk, Sergiy .

PHARMACEUTICS, 2023, 15 (02)

[18] Effect of granulation scale-up on the strength of granules [J].

Hassanpour, A. ;

Kwan, C. C. ;

Ng, B. H. ;

Rahmanian, N. ;

Ding, Y. L. ;

Antony, S. J. ;

Jia, X. D. ;

Ghadiri, M. .

POWDER TECHNOLOGY, 2009, 189 (02) :304-312

[19] SURFACE ENERGY AND CONTACT OF ELASTIC SOLIDS [J].

JOHNSON, KL ;

KENDALL, K ;

ROBERTS, AD .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1971, 324 (1558) :301-&

[20] Fully-3D DEM simulation of fluidised bed spray granulation using an exploratory surface energy-based spray zone concept [J].

Kafui, D. K. ;

Thornton, C. .

POWDER TECHNOLOGY, 2008, 184 (02) :177-188

← 1 2 3 4 5 →