植物油榨油机操作中涉及的现象的解释的新方法

OCL Pub Date : 2022-01-01 DOI:10.1051/ocl/2021048
P. Carré
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引用次数: 4

摘要

在追求自然、减少碳足迹和分散式破碎行业发展的背景下,机械提取技术对该行业的重要性正在增强。这种技术的性能仍然远远低于期望的水平,而对螺旋压力机中涉及的主要现象的理解仍然不足。本文在简要介绍了这一学科的发展现状后,提出了一个以压力产生和可塑性概念为中心的新模型。根据这种方法,塑性可以考虑油籽的含水量和含油量、温度以及可能的脱壳等参数。反过来,可塑性可以解释饼的可压缩性及其抵抗螺钉推力的能力,从而根据螺钉和保持架的几何形状产生压力或蠕变或向后流动。该模型还必须考虑压缩速度、摩擦、这些参数之间相互作用的复杂性以及螺杆节段和锥环连续的影响。它建立在观察和经验的基础上,并提供了对印刷机的调节和几何同时工作的理解,以实现在能量,效率和降低蛋白质和油所经历的温度方面的改进性能
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New approach for the elucidation of the phenomena involved in the operation of vegetable oil extraction presses
In a context where the search for naturalness, the need to reduce the carbon footprint and the development of a decentralized crushing sector are intensifying, mechanical extraction is a technology that is regaining major importance for the industry. The performance of this technique remains far below what is desirable, while the understanding of the main phenomena involved in screw presses remains insufficient. This article, after a brief presentation of the state of the art of this discipline, presents a new model centered on the notions of pressure generation and plasticity. According to this approach, plasticity can account for parameters such as the water and oil content of oilseeds, their temperature, and their possible dehulling. Plasticity in turn would explain both the compressibility of the cake and its ability to resist the thrust of the screws, and consequently to generate pressure or to creep or flow backward depending on the geometry of the screw and the cage. The model must also incorporate the notions of compression velocity, friction, and the complexity of the interactions between these parameters and the impact of the succession of screw segments and cone rings. It has been built on observation and experience and gives an understanding of the need to work simultaneously on the conditioning and geometry of the presses to achieve improved performance in terms of energy, efficiency, and reduction of the temperatures experienced by the proteins and oils
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OCL
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