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During a site visit to a castor oil refining facility, students were briefly introduced to the refining process as shown in Figure 2. Q2. Castor beans Castor cake Expeller 1 Expeller 2 Centrifuge Degummed castor oil Figure 2 Castor beans (contain 50 wt% of oil, 50 wt% of solids) were conveyed as fresh feed to an expeller to retrieve the crude castor oil (contains 20 wt% of solids), leaving castor cake (contains 45 wt% of oil) as the solid residue. Then, the castor cake was sent to a second expeller to increase the yield of crude oil. 70 wt% of oil was obtained in the crude castor oil exiting the second expeller while the remaining castor cake was sent to a subsequent extraction process. The crude oil from both expellers is channelled to a centrifuge. Gummy solids and clear degummed castor oil exit the centrifuge via two different streams. Then, the gummy solids (contains 42.75 wt% of oil) were fed back to the second expeller to recover any residual crude castor oil. The oil content in the castor cake exiting the second expeller was found to be 2.8 wt%. As for the clear degummed castor oil (no solids) from centrifuge, further refining and filtration are required to produce refined castor oil. Draw and label the flowchart for the process above. Keep the number of labelled unknowns to a minimum. (a)

During a site visit to a castor oil refining facility, students were briefly introduced to the refining process as shown in Figure 2. Q2. Castor beans Castor cake Expeller 1 Expeller 2 Centrifuge Degummed castor oil Figure 2 Castor beans (contain 50 wt% of oil, 50 wt% of solids) were conveyed as fresh feed to an expeller to retrieve the crude castor oil (contains 20 wt% of solids), leaving castor cake (contains 45 wt% of oil) as the solid residue. Then, the castor cake was sent to a second expeller to increase the yield of crude oil. 70 wt% of oil was obtained in the crude castor oil exiting the second expeller while the remaining castor cake was sent to a subsequent extraction process. The crude oil from both expellers is channelled to a centrifuge. Gummy solids and clear degummed castor oil exit the centrifuge via two different streams. Then, the gummy solids (contains 42.75 wt% of oil) were fed back to the second expeller to recover any residual crude castor oil. The oil content in the castor cake exiting the second expeller was found to be 2.8 wt%. As for the clear degummed castor oil (no solids) from centrifuge, further refining and filtration are required to produce refined castor oil. Draw and label the flowchart for the process above. Keep the number of labelled unknowns to a minimum. (a)

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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Q2. During a site visit to a castor oil refining facility, students were briefly introduced to the refining process as shown in Figure 2. Castor beans Castor cake Expeller 1 Expeller 2 Centrifuge Degummed castor oil Figure 2 Castor beans (contain 50 wt% of oil, 50 wt% of solids) were conveyed as fresh feed to an expeller to retrieve the crude castor oil (contains 20 wt% of solids), leaving castor cake (contains 45 wt% of oil) as the solid residue. Then, the castor cake was sent to a second expeller to increase the yield of crude oil. 70 wt% of oil was obtained in the crude castor oil exiting the second expeller while the remaining castor cake was sent to a subsequent extraction process. The crude oil from both expellers is channelled to a centrifuge. Gummy solids and clear degummed castor oil exit the centrifuge via two different streams. Then, the gummy solids (contains 42.75 wt% of oil) were fed back to the second expeller to recover any residual crude castor oil. The oil content in the castor cake exiting the second expeller was found to be 2.8 wt%. As for the clear degummed castor oil (no solids) from centrifuge, further refining and filtration are required to produce refined castor oil. (a) Draw and label the flowchart for the process above. Keep the number of labelled unknowns to a minimum.
Transcribed Image Text:Q2. During a site visit to a castor oil refining facility, students were briefly introduced to the refining process as shown in Figure 2. Castor beans Castor cake Expeller 1 Expeller 2 Centrifuge Degummed castor oil Figure 2 Castor beans (contain 50 wt% of oil, 50 wt% of solids) were conveyed as fresh feed to an expeller to retrieve the crude castor oil (contains 20 wt% of solids), leaving castor cake (contains 45 wt% of oil) as the solid residue. Then, the castor cake was sent to a second expeller to increase the yield of crude oil. 70 wt% of oil was obtained in the crude castor oil exiting the second expeller while the remaining castor cake was sent to a subsequent extraction process. The crude oil from both expellers is channelled to a centrifuge. Gummy solids and clear degummed castor oil exit the centrifuge via two different streams. Then, the gummy solids (contains 42.75 wt% of oil) were fed back to the second expeller to recover any residual crude castor oil. The oil content in the castor cake exiting the second expeller was found to be 2.8 wt%. As for the clear degummed castor oil (no solids) from centrifuge, further refining and filtration are required to produce refined castor oil. (a) Draw and label the flowchart for the process above. Keep the number of labelled unknowns to a minimum.
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