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The Air or Brayton Cycle Solvent Recovery System
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The required temperature and technique for condensing common industrial solvents from the exhaust air of drying ovens is explained. The benefits of the Air Cycle for this application are discussed. The operation of the 8000 CFM Air Cycle Solvent Recovery System developed by the AiResearch Manufacturing Company of California under contract to the Department of Energy is discussed. Performance data for the recovery of solvents from an industrial drying oven is presented. The advantages of the "free spindle" arrangement as an alternate to the present gear drive are explained. The simple method for adjusting and controlling the turbine exhaust temperature for the "free spindle" arrangement is explained. The application of the Air Cycle for condensing solvent vapors from inert atmosphere ovens and from activated carbon desorbed with nitrogen is also described. Relative merits of the Air Cycle System compared with other available methods of solvent recovery are discussed.
Fox, B. J. (1986). The Air or Brayton Cycle Solvent Recovery System. Energy Systems Laboratory (http://esl.tamu.edu). Available electronically from