C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/04 (2006.01) C02F 9/00 (2006.01)
Patent
CA 2690920
The present invention relates to a process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction which comprises : - feeding of the aqueous stream containing the organic by- products of the reaction to a system consisting of a distillation column equipped with a partial condenser and a total condenser; - partial condensation of the vaporized stream leaving the head of the column and collection of a first distillate enriched in the heavier by-products; - total condensation of the vaporized stream leaving the partial condenser and collection of a liquid stream which is partly sent back to the distillation column as reflux whereas the remaining part is collected as distillate; - extraction of the purified aqueous stream from the bottom of the distillation column.
La présente invention porte sur un procédé de purification d'un courant aqueux provenant de la réaction de Fischer-Tropsch. Ce procédé consiste à alimenter par le courant aqueux contenant les sous-produits organiques de la réaction un système consistant en une colonne de distillation équipée d'un condenseur partiel et d'un condenseur total ; à condenser partiellement le courant vaporisé quittant la tête de la colonne et à collecter un premier distillat enrichi en les sous-produits plus lourds ; à condenser complètement le courant vaporisé quittant le condenseur partiel et à collecter un courant liquide partiellement renvoyé à la colonne de distillation en tant que reflux, la partie restante étant recueillie en tant que distillat ; à extraire du courant aqueux purifié du fond de la colonne de distillation.
Carnelli Lino
Lazzari Carla
Pandolfi Gianni
Eni S.p.a.
Robic
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