Development and Performance Evaluation of a Variable-Pitch Tapered-Shaft Screw Press for Palm Oil Extraction

ypes of structures of screw press zeer corps, namely, determining the optimal gap for oil yield, which has practical and economic feasibility. In this regard, this study is aimed at analysing the existing types of zeer corps, identifying their advantages and disadvantages to find methods to improve their design and increase oil yield. The leading methods for solving this problem are empirical research methods, which allow comprehensively considering the existing types of structures based on observation and, through comparison and experiment, to find a rational solution to the problem. The paper analyses the features of technical means for oil separation in presses and extruders, substantiates the practicality of the existing design and indicates the complexity or simplicity of designs in the scientific literature. The need to supplement the existing terms for various designs of the oil separator bodies and possible ways to improve the process of oil separation into different fractions are identified. Experimental studies were carried out with a set of semi-hulls of the zeer sections with different gaps. This made it possible to identify a smaller percentage of cake shedding through the zeer sections, with a corresponding reduction in the gap. The results of oil yield were obtained depending on the established gap in the semihulls of the slotted elements of the zeer camera and the heating temperature of the hulls. A decrease in the percentage of shedding with a decrease in the gap in the zeer camera was found. The studied design of the zeer camera type confirmed the versatility and simplicity of its design, which facilitates its maintenance and replacement. For each processed tonne of seeds, due to the increase in the amount of oil squeezed out, the profit of a farmer or enterprise that improves twin-screw extruders by adjusting the gaps as follows will increase accordingly

Section: Resultsmentioning

confidence: 99%

Study of the effectiveness of the design of the oil removal channels of screw presses for squeezing out oil

Hudzenko,

Vasyliv,

Zheplinska

et al. 2023

Section: Resultsmentioning

confidence: 99%

Untitled

2023

“…There are many different proposals for improving the design of oil-pressing screw presses in the scientific literature (Olaoye et al, 2020;Sheikh & Zakiuddin, 2019;Hudzenko et al, 2020). Conventionally, they can be divided into two directions: creating a screw press for squeezing oil from a specific crop (Ogunlade & Aremu, 2020;Alabi et al, 2022), or a universal screw press that combines not only pressing operations, but also the presence of auxiliary chambers (grinding, water-heat treatment (Fakayode & Ajav, 2019;Didur et al, 2019), or even a complete set of individual new working bodies, leading to an increase in oil yield and press productivity and a simultaneous reduction in production areas due to a reduction in auxiliary equipment. For example, the paper (Evon et al, 2021) describes a developed universal twin-screw extrusion presses to provide efficient thermo-mechanical-chemical pretreatment of lignocellulose biomass before using it as a source of mechanical hardening in fully bio-fibre boards.…”

Section: Literature Reviewmentioning

confidence: 99%

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

Hudzenko¹,

Vasyliv²,

Жеплінська³

et al. 2022

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.