Equipment for the atomisation of a liquid stream by means of...

B - Operations – Transporting – 01 – J

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Details

B01J 8/02 (2006.01) B01J 19/24 (2006.01) B01J 19/26 (2006.01) B05B 7/04 (2006.01) C01B 3/38 (2006.01)

Patent

CA 2577001

Equipment for the atomisation of a liquid stream by means of a dispersing gaseous stream and for mixing the atomised product with a further suitable gaseous stream, characterized in that it comprises: a feeding zone (A) equipped with means suitable for feed~ing the liquid stream, the gaseous dispersing stream and further gaseous stream; one or more two-stage atomisation zones (N) of the liquid stream by means of the gaseous dispersing stream; a distribution zone (D) of the further gaseous stream; the first stage of the atomisation zone (N1) essentially consisting of a tubular core (2), through which the liquid stream passes, equipped with an appropriate series of noz~zles (5), situated at the same height, and an outer jacket (4) coaxial to said core, through which the gaseous dispersing stream passes, wherein said nozzles (5) allow the gaseous dispersing stream to enter the tubular core, perpendicularly to the axis of said tubular core (2), effecting a first atomisation of the liquid stream, the second stage of the atomisation zone (N2) essentially consisting of one or more nozzles (6) positioned at the end of the tubular core (2), parallel to the axis of said tubular core, to increase the atomisation degree, the distribution zone (D) essentially consisting of a further jacket (8), through which the further gaseous stream passes, external and coaxial to the jacket (4) of the first atomisation stage, and a series of nozzles (9) situated at the bottom of said further jacket, all positioned at. the same height and parallel or inclined with an alpha angle lower than 40~ with respect to the axis of the tubular core.

L'invention concerne un dispositif servant à pulvériser un flux de liquide au moyen d'un flux gazeux de dispersion, et à mélanger le produit pulvérisé avec un flux gazeux adéquat additionnel. Ce dispositif se caractérise par: zone (A) d'alimentation équipée de moyens assurant l'apport du flux de liquide, du flux gazeux de dispersion et du flux gazeux additionnel, une ou plusieurs zones (N) de pulvérisation à deux étages assurant la pulvérisation du flux de liquide au moyen du flux gazeux de dispersion, une zone (D) de distribution assurant la distribution du flux gazeux additionnel. Le premier étage (N1) de la zone de pulvérisation est principalement constitué d'un noyau (2) tubulaire traversée par le flux de liquide, équipé d'une série de buses (5) adéquates, placées à la même hauteur, et d'une enveloppe (4) externe coaxiale à ce noyau; traversée par le flux gazeux de dispersion. Lesdites buses (5) permettent le passage du flux de dispersion gazeux dans le noyau tubulaire, perpendiculairement aux axes du noyau (2) tubulaire et produisent une première pulvérisation du flux de liquide. Le second étage (N2) de la zone de pulvérisation est constitué principalement d'une ou de plusieurs buses (6) placées à l'extrémité du noyau (2) tubulaire, parallèles à l'axe du noyau tubulaire, et servant à augmenter le degré de pulvérisation. La zone (D) de distribution est principalement constituée d'une enveloppe (8) additionnelle traversée par le flux gazeux additionnel, disposée à l'extérieur de l'enveloppe (4) du premier étage de pulvérisation, et coaxiale à celle-ci, et d'un ensemble de buses (9) placées en bas de l'enveloppe additionnelle, toutes disposées à la même hauteur, et parallèles ou inclinées de manière à présenter un angle d'incidence inférieur à 40° relativement à l'axe du noyau tubulaire.

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