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(a) Draw a flowchart of the process for the extraction of bean oil. Calculate the yield of bean oil product (kg oil/kg beans fed), the required fresh hexane feed (kg C,H14/kg beans fed), the recycle to fresh feed ratio (kg hexane recycled/kg fresh feed), and the compositions (component mass fractions) of the slurry leaving the extractor and the filtrate. (b) Suggest possible changes in process conditions or additional processing steps that might improve the performance and overall economy of this process. (c)

(a) Draw a flowchart of the process for the extraction of bean oil. Calculate the yield of bean oil product (kg oil/kg beans fed), the required fresh hexane feed (kg C,H14/kg beans fed), the recycle to fresh feed ratio (kg hexane recycled/kg fresh feed), and the compositions (component mass fractions) of the slurry leaving the extractor and the filtrate. (b) Suggest possible changes in process conditions or additional processing steps that might improve the performance and overall economy of this process. (c)

Introduction to Chemical Engineering Thermodynamics
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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2. In the production of bean oil, beans containing 30 wt% oil and 70 % solids are ground and fed to a mixing tank, where they are suspended in liquid n-hexane (C,H14). The feed ratio is (6 kg hexane/kg beans). Essentially all of the oil in the beans is extracted into the hexane. The mixer effluent passes to a filter. The filter cake contains 90 wt% bean solids and the balance bean oil and hexane. The liquid filtrate emerging from the mixer has the same composition as the liquid components in the filter cake. The filter cake is discarded, and the liquid filtrate is fed to a vacuum evaporator, in which the hexane is totally vaporised and thereby separated from the oil. subsequently condensed and recycled to the mixing tank. The hexane vapour is (a) Draw a flowchart of the process for the extraction of bean oil. Calculate the yield of bean oil product (kg oil/kg beans fed), the required fresh hexane feed (kg C,H14/kg beans fed), the recycle to fresh feed ratio (kg hexane recycled/kg fresh feed), and the compositions (component mass fractions) of the slurry leaving the extractor and the filtrate. (b) Suggest possible changes in process conditions or additional processing steps that might improve the performance and overall economy of this process. (c)
Transcribed Image Text:2. In the production of bean oil, beans containing 30 wt% oil and 70 % solids are ground and fed to a mixing tank, where they are suspended in liquid n-hexane (C,H14). The feed ratio is (6 kg hexane/kg beans). Essentially all of the oil in the beans is extracted into the hexane. The mixer effluent passes to a filter. The filter cake contains 90 wt% bean solids and the balance bean oil and hexane. The liquid filtrate emerging from the mixer has the same composition as the liquid components in the filter cake. The filter cake is discarded, and the liquid filtrate is fed to a vacuum evaporator, in which the hexane is totally vaporised and thereby separated from the oil. subsequently condensed and recycled to the mixing tank. The hexane vapour is (a) Draw a flowchart of the process for the extraction of bean oil. Calculate the yield of bean oil product (kg oil/kg beans fed), the required fresh hexane feed (kg C,H14/kg beans fed), the recycle to fresh feed ratio (kg hexane recycled/kg fresh feed), and the compositions (component mass fractions) of the slurry leaving the extractor and the filtrate. (b) Suggest possible changes in process conditions or additional processing steps that might improve the performance and overall economy of this process. (c)
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