Spent solvent -- especially when it contains a great deal of scrap material -- presents a difficult challenge. But Dupps has developed a batch vessel which evaporates solvent for re-use and allows the recycling or disposal of the solids.Dupps equipment helps pulp and paper mills make recycled paper. After used paper is turned into a pulp and processed with ink-removing chemicals, a Dupps screw press removes just the right amount of solvent carrying ink from the pulp before it's made into recycled paper.The Dupps screw press is also the world's best-selling solution to the problem of dewatering sludg

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