Process for the gasification of heavy oil

C - Chemistry – Metallurgy – 01 – B

Patent

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Details

C01B 3/36 (2006.01) C01B 3/24 (2006.01) C01B 3/26 (2006.01)

Patent

CA 2465652

A process whereby a high viscosity hydrocarbonaceous material is fed to a gasifier for conversion to synthesis gas. The feedstock, steam oxygen, and recycled gasification system water are all fed into the gasifier through a four stream feed injector (2), which includes a central cylindrical conduct (4) and second (60, third (8) and outer (10) cylindrical conducts radically spaced from each other. This setup provides a center passage (12), and a first (14), a second (16), and an outer (18) annular coaxial concentric annular passage. The upstream ends of each conduit ave a flanged inlet nozzle (20) for the introduction of material. The feedstock in this design is sandwiched between two oxygen streams so as to provide better conversion for the exceptionally heavy feed. The further stream down the central layout (12) of the feed injector (2) provides the fllow path for the recycled water.

L'invention concerne un procédé, selon lequel une matière hydrocarbonée à viscosité élevée est amenée jusqu'à un gazéifeur en vue d'être convertie en gaz de synthèse. La charge de départ, la vapeur, l'oxygène, et l'eau du système de gazéification recyclée sont acheminés dans le gazéifeur à travers un injecteur d'alimentation à quatre flux (2) qui comprend un conduit cylindrique central (4), des second (6) et troisième (8) conduits cylindriques et un conduit cylindrique externe (10) espacés les uns des autres dans le sens radial. Cette installation engendre un passage central (12) et des premier (14) et second (16) passages annulaires concentriques coaxiaux et un passage externe (18) annulaire concentrique coaxial. Les extrémités en amont de chaque conduit possèdent une buse d'admission à bride (20) permettant l'introduction de la matière. La charge de départ de ce modèle est comprise entre deux flux d'oxygène, de manière à fournir une meilleure conversion en cas de charge exceptionnellement lourde. L'autre flux en aval du passage central (12) de l'injecteur d'alimentation (2) engendre la voie d'écoulement destinée à l'eau recyclée.

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