GB280986A - Improvements in or in connection with the extraction of oil from the pericarp of palm fruit and like nuts - Google Patents

Abstract

280,986. Downs, C., and Bellwood, R. A. July 21, 1926. Fats and fatty oils, extracting by solvents.-Palm and like oils are extracted without the use of steam or water by means of externally heated solvent while the pericarp is being stripped from the nuts. In the steamjacketed extractor 11 palm fruits are agitated in hot or boiling solvent by serrated blades 19 which are mounted on a rotating shaft 15 and alternate with stationary agitators secured to the extractor. The blades 19 are pivoted on hubs P so as to be displaceable in the path of rotation and give under abnormal pressure, but may be pivoted so as to be set or to give at an' angle to the path of rotation. In a modification the extractor and agitating shaft are vertical, and the extract flows through a perforated plate above which is a sweeper for ejecting the shredded pericarp and the cleaned nuts through a suitable orifice in the side; steam coils are arranged below the plate to maintain the temperature of the solvent. In further modifications, the digester described in Specification 241,298, [Class 58, Grain &c.], is slightly modified and used as an extractor, all the agitators may rotate, maybe some in opposite direction to the others, a plurality of agitating shafts situated laterally of a central one may be employed, or a shell or cage may be arranged adjacent the extractor walls, be fitted with agitators, and be rotated in the same or opposite direction as the central shaft.