Desolventizer toaster with vapor recycle
AssigneeDesmet Ballestra North America, Inc.
InventorsTimothy G. Kemper, Marc Kellens, Philippe Van Doosselaere
Life of this patent
Estimating the term…
Abstract
An improved desolventizer toaster and methods are provided wherein a solvent vapor recycle system may be employed to recycle solvent vapor throughout a portion of the desolventizer portion of the apparatus housing. In other embodiments of the invention, a water vapor recycle system may be employed to recycle water vapor throughout a portion of the toaster portion of the apparatus housing. The solvent vapor recycle system may comprise an appropriate meal dust separator, blower and superheater. The water vapor recycle system may comprise an appropriate ejector or blower and superheater. Water vapor recovered in the solvent extraction process may be used as a water vapor feed to the heated water vapor recycling system.
Claims16
Method for processing spent material having solids, residual moisture, and solvent therein resulting from a precursor solvent extraction process, said method comprising conveying said spent material through a housing from an upstream entry to downstream exit, contacting said spent material with heated water vapor in said housing and volatile solvent formed in said housing, said method further comprising recycling some of said volatile solvent, said volatile recycling comprising providing a vapor solvent recycle exit in said housing, and transporting recycled solvent vapor from said vapor solvent recycle exit to a vapor solvent entry in said housing.
Method for processing spent material having solids, residual moisture, and solvent therein resulting from a precursor solvent extraction process, said method comprising conveying said spent material through a housing from an upstream entry to downstream exit, contacting said spent material with heated water vapor in said housing and volatile solvent formed in said housing, said method further comprising recycling some of said heated water vapor, said recycling of said water vapor comprising providing a heated water vapor recycle exit in said housing and passing recycled heated water vapor from said heated water vapor recycle exit to a heated water vapor entry in said housing.
Dependencies are inferred from the claim text.