Premium
Solvent recovery
Author(s) -
Myers N. W.
Publication year - 1983
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02543488
Subject(s) - solvent , effluent , environmental science , solvent extraction , waste management , work (physics) , pulp and paper industry , extraction (chemistry) , process engineering , chemistry , chromatography , engineering , environmental engineering , mechanical engineering , organic chemistry
A brief overview is presented of the economic significance of solvent recovery in the oilseed extraction industry in view of the steep price advance of hexane since 1974. The present solvent recovery practices in oilseed plants are outlined with addition of operating techniques since 1976. Also, industry trends are noted in terms of improved equipment. Information is presented on the expected solvent losses in various recovery steps in the normal solvent plant operation. Techniques for measuring solvent losses in vent gas effluent, waste water effluent and extracted oil production stream are outlined. The areas of greatest solvent loss are the desolventizer‐toaster (DT) meal outlet stream and the various mechanical leaks in the process machinery. Some discussion is presented on the lack of ability to better define the solvent loss associated with meal discharge stream from the DT unit. Various deficiencies are pointed out in testing procedures and a suggestion is made for increased work in the field to substantiate a better value for solvent loss determination in DT meal.