Method and apparatus for transporting a particulate material

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 53/40 (2006.01) B24C 7/00 (2006.01) B65D 90/62 (2006.01) B65G 53/30 (2006.01) B65G 69/06 (2006.01) F16K 31/22 (2006.01)

Patent

CA 2697433

Fluidising transport apparatus comprises a hopper (2), a pressure vessel (4) and a valve element (8) which controls a port (6) between the hopper (2) and the vessel (4). The valve element (8) is retained closed against the port (6) under pressure within the vessel (4). A fluidising nozzle (14) receives transport fluid, such as water from a fluid line (16). Water supplied through the fluid line (16) thus fluidises solids (32) in the vessel (4) and raises the pressure to maintain the valve element (8) in the closed position. The fluidised solids material is then supplied to a transport pipeline (24) from the vessel (4). Solids material loaded into the hopper (2) depress the valve element (8) when pressure within the vessel (4) is relieved, so allowing a fresh charge of the solids material (32) to enter the vessel (4) for a subsequent cycle. The position of the valve element (8) within the vessel (4) is influenced by a float (12) which responds to the water level (34) within the hopper (2).

L'invention porte sur un appareil de transport à fluidisation comprenant une trémie (2), une cuve sous pression (4) et un élément de soupape (8) contrôlant un orifice d'accès (6) situé entre la trémie (2) et la cuve (6). L'élément de soupape est retenu en position fermée contre l'orifice d'accès (6) sous l'effet de la pression à l'intérieur de la cuve. Une buse de fluidisation (14) reçoit un fluide de transport, tel que de l'eau, provenant d'une conduite de fluide (16). L'eau amenée par l'intermédiaire de la conduite de fluide (16) permet ainsi de fluidiser les solides (32) contenus dans la cuve (4) et d'augmenter la pression afin de maintenir l'élément de soupape (8) en position fermée. Le matériau solide fluidisé est ensuite amené depuis la cuve (4) jusqu'à une conduite de transport (24). Les matériaux solides chargés sur la trémie (2) permettent d'enfoncer l'élément de soupape (8) lorsque la pression se relâche à l'intérieur de la cuve (4), laissant ainsi une charge de matériau solide frais pénétrer dans la cuve (4) pour un cycle ultérieur. La position de l'élément de soupape (8) à l'intérieur de la cuve (4) est influencée par un flotteur (12) qui réagit au niveau de l'eau (34) à l'intérieur de la trémie.

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