| 摘要 |
FIELD: chemistry.SUBSTANCE: methanol regeneration method involves preheating a water-methanol solution, evaporating vapour of the water-methanol mixture by mixing with heated vapour containing water vapour, fractionating the vapour of the water-methanol mixture to separate methanol and the steam condensate. The water-methanol solution is heated with methanol vapour during condensation thereof in the fractionation apparatus, as well as the balance part of the steam condensate removed from the apparatus. The water-methanol mixture is evaporated in hydrocyclone separators in two steps with premixing of the water-methanol solution with water vapour before the first separation step, as well as isoenthalpic evaporation at the second separation step. Fractionation is carried out at low pressure in a three-section falling film fractionation column.EFFECT: simple method, low metal consumption and continuity of the regeneration process.1 dwg, 1 ex |
