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    • Reducing Energy Usage in Extractive Distillation 

      Saxena, A. C.; Bhandari, V. A. (Energy Systems Laboratory (, 1985-05)
      Butadiene 1:3 is separated from other C4-hydrocarbons by extractive distillation in a sieve plate tower. Prior to the development work to be described, the pressure in the extraction tower was controlled at a fixed value. ...