Recovery of Solvent Dimethyl Sulfoxide in Carbon Fiber Production
This paper introduces the recovery and reuse technology of solvent dimethyl sulfoxide(DMSO)in the production process of pan-based carbon fibers.The waste water containing 15%～40%DMSO was separated and concentrated by successive operation in series with the following five towers,namely de-AN tower,dehydration tower,crude tower,product tower and de-weight tower.Producing DMSO products with a purity of over 99.95%and a recovery rate of over 97%,basically achieves the recycling and reuse of solvent DMSO in carbon fiber production.
carbon fiberdimethyl sulfoxiderecycling and reuseseparation and concentration
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