Apparatus for gasification of spent liquor

D - Textiles – Paper – 21 – C

Patent

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D21C 11/12 (2006.01)

Patent

CA 2365410

Arrangement for understoichiometric gasification of spent liquor from chemical pulp production, comprising an upper reactor part (2), which upper reactor part is provided with a burner (5) for the spent liquor and with an internally clad reactor jacket (4), and a lower separating part (8), comprising at least one wall (18), for separating a phase of solid and/or molten material, formed on gasification, from a phase of combustible gaseous material, which separating part (8) is arranged to essentially convey the said phase of solid and/or molten material to a product liquid bath (11). According to the invention, the said separating part (8) also comprises means for creating a cooling and protecting liquid film along at least one side of the said wall (18), the said means comprising a supply line (19) for coolant liquid, which supply line, at its inlet end, is connected to a coolant liquid bath (10) which is separate from the said product liquid bath (11).

Cet appareil, destiné à la gazéification sous-stoechiométrique de liqueur épuisée provenant de la production de pâte chimique, qui comporte une partie supérieure de réacteur (2) pourvue d'un brûleur (5) pour la liqueur épuisée et d'une gaine de réacteur interne (4), comporte également une partie inférieure de séparation (8), pourvue d'au moins une paroi (18), destinée à séparer une phase d'un matériau solide et/ou en fusion, formé lors de la gazéification, d'une substance gazeuse combustible. Cette partie séparatrice (8) est conçue pour transporter principalement ladite phase de matériau solide et/ou en fusion vers un bain liquide de produit (11). Cette partie de séparation (8) comporte également un équipement permettant de créer un film liquide refroidissant et protecteur le long d'au moins un côté de ladite paroi (18), cet équipement comportant un conduit d'alimentation (19) en liquide de refroidissement. Le conduit d'alimentation, est raccordé, au niveau de son extrémité d'entrée, à un bain de liquide de refroidissement (10) séparé dudit bain liquide de produit (11).

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