2.3. In the production of a bean oil, beans containing 14.0 wt% oil and 86.0% solids are ground and fed to a stirred tank (the extractor) along with a recycled stream of liquid hexane. The feed ratio is 4 kg hexane/kg beans. The ground beans are suspended in the liquid, and essentially all of the oil in the beans is extracted into the hexane. The extractor effluent passes to a filter. The filter cake contains 80.0 wt% bean solids and the balance bean oil and hexane, the latter two in the same ratio in which they emerge from the extractor. The filter cake is discarded and the liquid filtrate is fed to a heated evaporator in which the hexane is vaporized and the oil remains as a liquid. The oil is stored in drums and shipped. The hexane vapor is subsequently cooled and condensed, and the liquid hexane condensate is recycled to the extractor. Calculate the yield of bean oil product (kg oil/kg beans fed), the required fresh hexane feed (kg hexane/kg beans fed), and the recycle to fresh feed ratio (kg hexane recycled/kg fresh feed). Condenser EXTRACTOR FILTER EVAPORATOR Beans Filter cake Oil
2.3. In the production of a bean oil, beans containing 14.0 wt% oil and 86.0% solids are ground and fed to a stirred tank (the extractor) along with a recycled stream of liquid hexane. The feed ratio is 4 kg hexane/kg beans. The ground beans are suspended in the liquid, and essentially all of the oil in the beans is extracted into the hexane. The extractor effluent passes to a filter. The filter cake contains 80.0 wt% bean solids and the balance bean oil and hexane, the latter two in the same ratio in which they emerge from the extractor. The filter cake is discarded and the liquid filtrate is fed to a heated evaporator in which the hexane is vaporized and the oil remains as a liquid. The oil is stored in drums and shipped. The hexane vapor is subsequently cooled and condensed, and the liquid hexane condensate is recycled to the extractor. Calculate the yield of bean oil product (kg oil/kg beans fed), the required fresh hexane feed (kg hexane/kg beans fed), and the recycle to fresh feed ratio (kg hexane recycled/kg fresh feed). Condenser EXTRACTOR FILTER EVAPORATOR Beans Filter cake Oil
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:2.3. In the production of a bean oil, beans containing 14.0 wt% oil and 86.0% solids are ground and fed to a stirred
tank (the extractor) along with a recycled stream of liquid hexane. The feed ratio is 4 kg hexane/kg beans. The ground
beans are suspended in the liquid, and essentially all of the oil in the beans is extracted into the hexane. The extractor
effluent passes to a filter. The filter cake contains 80.0 wt% bean solids and the balance bean oil and hexane, the latter
two in the same ratio in which they emerge from the extractor. The filter cake is discarded and the liquid filtrate is fed
to a heated evaporator in which the hexane is vaporized and the oil remains as a liquid. The oil is stored in drums and
shipped. The hexane vapor is subsequently cooled and condensed, and the liquid hexane condensate is recycled to the
extractor. Calculate the yield of bean oil product (kg oil/kg beans fed), the required fresh hexane feed (kg hexane/kg
beans fed), and the recycle to fresh feed ratio (kg hexane recycled/kg fresh feed).
Condenser
EXTRACTOR
FILTER
EVAPORATOR
CgH14(1)
Вeans
Filter cake
Oil
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