Method of continuous extraction of crude wax and apparatus therefor
AssigneeNippon Petrochemicals Company, Limited
InventorsKazumi Fukuyo, Kouji Fujimura, Toshiharu Fusano
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Abstract
A method and an apparatus for continuously extracting a wax component contained in a solid residue with a solvent, in which method, the solid residue obtained from the juice of sugar cane is used as a raw material. To make the extraction time uniform and to obtain the wax at a high efficiency of extraction, the solid residue and an organic solvent for extraction are mixed under shear force and agitated in directions perpendicular to the flow direction. The mixing is conducted under an agitated flow condition so as to form a substantially plug flow in the flow direction.
Claims24
A horizontal-type continuous organic solvent extraction apparatus for crude wax comprising:
- a) an inlet opening formed on one end portion of a horizontal closed vessel for continuously feeding a solid residue obtained from sugar cane juice and an organic extraction solvent,
- b) mixing and transferring devices which are mounted on at least one shaft in said vessel, the mixing function of which devices is to mix the mixture of the solid residue and the organic extraction solvent under shear force, the directions of the driving force of the respective devices being opposite to each other, while the overall transferring function of said devices being such that the mixture as a whole is continuously transferred from one end to the other end portion of said vessel in at least substantially plug flow, and
- c) an outlet opening formed on the other end of said vessel for continuously discharging the mixture of said solid residue and said extraction solvent.
A continuous organic solvent extraction apparatus for crude wax comprising:
- a) an inlet opening formed on one end portion of a closed vessel for continuously feeding a solid residue obtained from sugar cane juice and an organic extraction solvent,
- b) a pair of mixing and transferring devices which are mounted on at least one shaft in said vessel, the mixing function of which devices is to mix the mixture of the solid residue and the organic extraction solvent under shear force, the directions of the driving force of the respective devices being opposite to each other, while the overall transferring function of said devices being such that the mixture as a whole is continuously transferred from one end to the other end portion of said vessel, and so as to provide the flow of the mixture with a radial agitation in a stirred flow condition to form a substantially plug flow in the axial flow direction, and
- c) an outlet opening formed on the other end of said vessel for continuously discharging the mixture of said solid residue and said organic extraction solvent.
A continuous organic solvent extraction apparatus for crude wax comprising:
- a) an inlet opening formed on one end portion of a closed vessel for continuously feeding a solid residue obtained from sugar cane juice and an organic extraction solvent,
- b) a pair of mixing and transferring devices comprising a larger diameter ribbon impeller and a small diameter ribbon impeller which are mounted on one shaft in said vessel, the mixing function of which devices is to mix the mixture of the solid residue and the organic extraction solvent under shear force, the directions of the driving force of the respective devices being opposite to each other, while the overall transferring function of said devices being such that the mixture as a whole is continuously transferred from one end to the other end portion of said vessel, and so as to provide the flow of the mixture with a radial agitation in a stirred flow condition to form a substantially plug flow in the axial flow direction, and
- c) an outlet opening formed on the other end of said vessel for continuously discharging the mixture of said solid residue and said organic extraction solvent.
Dependencies are inferred from the claim text.