Apparatus for fluid-solid bed processing

An apparatus for a supercritical fluid-solid bed process such as for decaffeinating green coffee beans including an elongated cylindrical vessel (12) having a top (14) and bottom (22). The solids accumulate to form a fluid-solids bed (24) on the bottom of the vessel which includes a central bottom o...

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Bibliographic Details
Main Authors SABADICS; JOSEPH L, MOORMAN; CHARLES T, ROYAL; T. ANTHONY
Format Patent
LanguageEnglish
Published 28.08.1990
Subjects
COFFEE
FOODS OR FOODSTUFFS
HUMAN NECESSITIES
MANUFACTURE, PREPARATION, OR INFUSION THEREOF
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TEA
THEIR SUBSTITUTES
THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
TRANSPORTING
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Summary:An apparatus for a supercritical fluid-solid bed process such as for decaffeinating green coffee beans including an elongated cylindrical vessel (12) having a top (14) and bottom (22). The solids accumulate to form a fluid-solids bed (24) on the bottom of the vessel which includes a central bottom opening (38), a valve (40) for periodically allowing flow of the solids through the bottom opening and a frusto-conical bottom wall (44). A flow promoting insert (46) having a lower conical wall (48) is provided circumjacent to but spaced from the frusto-conical bottom wall. The lower conical wall is provided with a rougher surface than the adjacent frusto-conical bottom wall to promote uniform flow of solids. The fluid initially flows through the solids counter-current to the solid flow and is introduced to the vessel through means (30) located above the flow promoting insert (46).
Bibliography:Application Number: US19890362156