Porous granules formation from oil crops by extrusion process: a theoretical perspective

Zaur A Meretukov,Evgeny P Koshevoy,Ivan A Shorstkii,Charles Odilichukwu R Okpala

doi:10.1051/ocl/2021032

Zaur A Meretukov, Evgeny P Koshevoy + Show 2 more

Open Access

https://doi.org/10.1051/ocl/2021032

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Abstract

The introduction of extruders, in particular how it works and its principles, must be started from the definition of the extrusion process, the description of its development and types, as well as its functions and advantages. In order to understand the process of extrusion technology, it is necessary to go into detailed descriptions and discussions together with theoretical insights of the subject. In the present article, we discuss a theoretical perspective of production of porous granules from oil crops by extrusion technology. Let’s divide this theoretical perspective into three steps. At first, we study the modeling of statics of oil crop mix compressibility together with carbon dioxide. At second, we study the heat exchange and phase transformation during the stroke of oil crop extruder filled with CO2. At third, we observe the deformation of the oil crops during the extrusion process. There is a probability that extrusion process of oil crop mix with the hard phase of carbon dioxide provides technological way that does not overheat the cellular structure. Potentially, the equation of Van der Waals is able to describe the change in volume of oil crops, which may be related with range of factors associated with volume expansion, calculated by equations as the expansion of granule material takes place at the outlet of extruder matrix. The extrusion processing of a mix of oil crops and carbon dioxide in hard phase at initial stage may likely occur as temperature declines. The resulting values show good compliance of theoretical results to experimental data on the example of coriander seeds.

Highlights

The introduction of extruders, in particular the way of its work and guiding principles, must be started by the definition of the extrusion processing, its development and types
We present a theoretical perspective of production of porous granules from oil crops by extrusion technology assisted by carbon dioxide in hard phase
We study the modeling of compressibility statics of oil crops mixed with carbon dioxide

Summary

Introduction

The introduction of extruders, in particular the way of its work and guiding principles, must be started by the definition of the extrusion processing, its development and types. Other factors that should be taken into consideration can include temperature of the extrusion barrel, press mold geometry, extruder type, feed rate and its related components (for example, composition, moisture content, particle size), as well as screw configuration/speed of rotation, which factors influence the product quality Another aspect of extrusion studies includes the composition of ingredients, which can affect the final product quality through the extruder performance or accompanying variables (for instance, motor torque, achieved pressure, product temperature and stroke) (Sriti et al, 2011). The type and design of extruder screws and its pressing efficiency determine how variable the extrusion process can be, which is underscored in evaluation of the thermomechanical pressing of seeds of various oil crops, such as sunflower, rapeseed, and coriander seeds (Uitterhaegen and Evon, 2017) We will discuss this theoretical opinion in three steps. We consider the deformation of oil crops during the extrusion process

Modeling of compressibility statics in oil crops mixed with carbon dioxide

E À ð17Þ ð13Þ

Deformation of oil crops during extrusion process

Findings

Data assessment