Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1982-05-07
1984-06-26
Sneed, Helen M. S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07F 502, C11B 100
Patent
active
044565569
ABSTRACT:
A process for the extraction of oilseeds which comprises extracting oil from oilseeds by contacting the seeds with an isopropanol-based solvent to obtain an extract miscella of seedoils in solvent and a seed meal containing absorbed liquids, cooling and phase separating the miscella to recover solvent from the extracted oil, recycling said solvent from the miscella to the extraction step, heating the seed meal in a desolventizing/toasting zone to produce a solvent vapor, contacting in a vapor/liquid contact zone the solvent vapor from the desolventizing toasting zone with a contact liquid which is a process solvent stream having a lesser content of water than the solvent vapor, withdrawing and condensing effluent vapor from the contact zone, passing at least a portion of the effluent vapor condensate to the extraction step as solvent, withdrawing effluent liquid from the contact zone and introducing said liquid into the desolventizing/toasting zone, and withdrawing a process meal product from the desolventizing/toasting zone. This process provides an energy efficient means for controlling water content in the process solvent, particularly in preventing the build-up of water in recycle streams to unacceptable levels.
REFERENCES:
patent: 2469147 (1949-05-01), Beckel et al.
patent: 2510221 (1950-06-01), Harcourt
patent: 2571143 (1951-10-01), Leslie
patent: 3993535 (1976-11-01), Karnofsky
patent: 4298540 (1981-11-01), Youn et al.
Shell Oil Company
Sneed Helen M. S.
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