a twin-screw extruder for oil extraction i. direct expression

The objective of this study was to investigate the screw configuration allowing oil extraction from sunflower seeds with a twin-screw extruder.

The objective of this study was to evaluate the feasibility of an aqueous process to extract sunflower seed oil using a co-rotating twin-screw extruder. Aqueous extraction was carried out using whole seeds and the influence of the operating conditions on oil yield was examined. Operating conditions included screw profile, screw rotation speed, and input flow rates of sunflower seeds and water

ing zone inside the twin-screw extruder barrel allows the effective expression of vegetable oil, which may be collected through the Fig. 1. Schematic representation of the Clextral BC45 twin-screw extruder configuration and the screw profile applied for sunflower oil extraction

To meet the exponentially growing demands in developing countries, continuous production is required which can be achieved by mechanical screw presses. Currently, single screw press is being widely used for extraction of oil. The problems associated with the single screw expeller is that, it requires three or CONTINUE READING

The lixiviation of the sunflower seeds was also incomplete. The aqueous extraction of the oil was more efficient in the twin-screw extruder than the reference trial conducted in a batch reactor. The best oil extraction yield obtained was approximately 55% and the residual oil content of the cake meal was approximately 30%.

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This research aims to investigate the potential of Nyamplung oil as a bio-based diesel engine fuel in outer islands and to achieve the optimum process of a mechanical oil extraction by using a flexible single screw extruder.

The oil extraction of Calophyllum seeds using a conventional single screw press leads to an inferior yield and is perceived to be less efficient as well as difficult to operate. An innovative and flexible single screw press was, therefore, designed and investigated in this study to solve these problems.

A Twin-Screw Extruder for Oil Extraction: I. Direct. However, the crude oil has to be refined as it contains many impurities and approximately 600 ppm phospho- rus. A new process, in which sunflower seeds are pressed in a twin-screw extruder, is examined here. The screw profile was first optimized.

Oil can be obtained from an oil seed through mechanical methods or solvent extraction. Mechanical expression of oil involves the application of pressure (using hydraulic or screw presses) to force oil out of the oil bearing material. In solvent extraction, solvent such as hexane is usually applied to remove oil from the material. Mechanical expression or mechanical pressing is, however