Simulation of palm oil expression in screw press using computational fluid dynamics: Laying the foundation

Azizi, C. Y. Mohd; Azian, M. Noor; Harun, M. Y.; Ismail, Mohd Hasmadi

doi:10.1109/ascc.2015.7244909

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Since the screw press is a closed system, for a deeper understanding of the processes that occur in its working chamber, namely, the study of the flow areas of oil-containing raw materials from the influence of the configuration of the screw shaft geometry in operation (Azizi et al, 2015) it is proposed to apply simulation modelling of hydrodynamic flows of raw materials before implementing scientific findings in metal. The authors claim that computational hydrodynamics allows for a deeper analysis of aspects of flow dynamics due to local effects of the geometry of working bodies, modelling will provide information about the mixing behaviour of an inhomogeneous mixture of palm fruits and the degree of its compaction due to the applied hydraulic force.…”

Section: Resultsmentioning

confidence: 99%

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2022

Animal Science and Food Technology

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Section: Resultsmentioning

confidence: 99%

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2022

Animal Science and Food Technology

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“…With the compression speed change, it has a significant impact on oil yield, oil point deformation and time of oil flow. Azizi et al (2015) researched the palm oil extraction principle with CFD simulation method under screw pressing, and test result provided mixing behavior of heterogeneous oil palm. Liu et al (2016) predicted the temperature effect of inner press cage on oil production using FEM analysis, the working temperature plays an important role on oil quality and oil extraction, influencing principle was obtained.…”

Section: Introductionmentioning

confidence: 99%

Research on microstructural‐mechanical and shearing properties of castor seed during mechanical extraction

Yang

Chen

et al. 2023

Journal of Texture Studies

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Castor seed oil, as an important biomass fuel, has attracted extensive attention worldwide due to inclusive applications. Castor seed screw mechanical extraction is in fact seed shear damage and oil output. Seed shearing mechanism has been investigated with a developed tribometer. Influences of pressing load, shearing speed, roller roughness were analyzed. Castor seed structural damage was in‐situ observed with optical microscope, and in‐depth analyzed with Scanning Electron Microscopy and Energy Dispersive Spectroscopy. The results reveal that shear interaction can be divided into three stages: coat damage, transition shearing and endosperm oil output. Seed shear mechanism includes coat peeling, endosperm plowing, tissue transferring and oil lubrication. High pressing load leads to more damage of coat and endosperm, causing more oil to flow out. With shearing speed increasing, coat is easily peeled, obvious endosperm shear plowing and oil lubrication happened in contact area. Coat damage by high roughness leads more oil output. Castor oil enters the contact area and work as lubricant, leading to the decrease of friction resistance.

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Research on the effectiveness of means for intensifying oil compression in twin-screw extrusion presses

Hudzenko¹,

Vasyliv²,

Жеплінська³

et al. 2022

Animal Science and Food Technology

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The relevance of the study is due to the problem that is characteristic of various types of screw press structures, which leave up to 16% of the oil in the cake when pressing sunflower oil. In this regard, the purpose of this study is to find rational methods to improve the design of twin-screw extrusion presses to increase the oil yield. The leading methods for solving this problem are empirical research methods that allow comprehensively considering the stages of improving the geometric configuration of the screw shaft based on observation and finding a rational solution to the problem by measuring and experimenting. The paper analyses the features of technical means for grinding oil-containing raw materials in presses and extrusion presses, justifies the need to develop new grinding working bodies. The need to supplement the existing ideas about the interaction of special grinding working bodies with transport and compressive screw nozzles and the development of grinding units for twin-screw extrusion presses produced in Ukraine are clarified. Experimental studies were conducted with the developed design of new working bodies – cylindrical-conical nozzles. They create an intermediate compression of oil-containing raw materials, aimed at intensifying grinding with simultaneous mixing of the processed oil-containing material. A triple repetition of the increase in the degree of compression was obtained when installing three pairs of cylindrical-conical nozzles along the length of the screw shaft. Their use allowed for intensifying the degree of pressure increase and the additional oil yield of up to 3.1%. With each processed ton of seeds, due to the increase in the amount of pressed oil, the profit of enterprises that will improve twin-screw extrusion presses with these working bodies will also increase accordingly.

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Simulation of palm oil expression in screw press using computational fluid dynamics: Laying the foundation

Cited by 3 publications

References 23 publications

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Research on microstructural‐mechanical and shearing properties of castor seed during mechanical extraction

Research on the effectiveness of means for intensifying oil compression in twin-screw extrusion presses

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