colonne de distillation d'eaux résiduaires

CONT: Effluent de fond de la colonne de distillation des eaux résiduaires lors [sic] de la production d'acrylonitrile.
OBS: rectificateur : Appareil distillatoire fournissant un produit rectifié.
OBS: rectification : Distillation fractionnée d'un liquide volatil soit pour en séparer les constituants, soit pour le purifier. [...] La rectification s'effectue dans des colonnes à plateaux, qui traitent d'un coup de grandes quantités.

CONT: Bottom stream from the wastewater stripper in the production of acrylonitrile.
CONT: Integrated wastewater treatment and reuse. Wastewater from the tall oil fractionation plant's processes consists mainly of polluted condensates from the vacuum system. ... In order to reduce the water load, turpentine-containing process wastewaters from the plant are fed into the Botnia pulp mill's wastewater stripper and from there into the pulp mill's own water cycle. This procedure lowers raw water consumption by the local forest industry and the tall oil fractionation plant.
CONT: Fiber optic converter boxes were also installed, along with Foxboro DCS Consoles and Triconex shutdown equipment. Two stripping columns, a drum and seven pumps were added to increase capacity of the wastewater stripper, which strips benzene, MNB and aniline from wastewater.