The invention discloses a treatment method adopting
cellulose ether solvent to recycle
vinasse, which comprises the following steps: during the production process of
cellulose ether, an
organic solvent medium is adopted to distill the
vinasse generated during the recycling process to a supersaturated solution or until the
moisture is completely evaporated to
dryness,
ethyl acetate is adopted to perform first extraction so as to filter and separate lost
cellulose ether, the
ethyl acetate is distilled for recycling, and the leftover after
distillation is a secondary product of etherifying agent; first extraction is performed on the subnatant, quantitative
hydrogen chloride is added for acidification, then
ethyl acetate is added for secondary extraction so as to recycle
acetic acid or
glycollic acid, the ethyl acetate is distilled and recycled for recycling, the leftover after
distillation is
acetic acid or
sodium glycollate, secondary extraction is performed on the subnatant, alkali is adopted for
neutralization, concentration is performed continuously, and
sodium chloride is filtered and recycled. According to the invention, as less
organic solvent in the concentrated solution is evaporated, and the
organic solvent can be used together with a washing solution in the production technology of cellulose ether,
zero emission of the three wastes during the production process of the cellulose ether is realized,
waste material is changed into things of value, and higher economic benefit is obtained.