Continuous high pressure solids pump system

F - Mech Eng,Light,Heat,Weapons – 23 – K

Patent

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F23K 3/00 (2006.01) C21B 5/00 (2006.01)

Patent

CA 2242916

A system and method for continuously supplying solids from a lower pressure storage reservoir (10) to a higher pressure feeder tank (30) for use in an application such as a blast furnace (40) employs a high pressure variable speed solids pump (20). A fluidizing device discharges solids in a dense phase flow to a deaerating device (15) for deaerating the solids flow prior to entering a variable speed high pressure solids pump (20). A feeder tank (30) having an outlet (31) is connected to the outlet (21) of the solids pump (20) and the feeder tank (30) is at a higher pressure than the source of the solids.

L'invention porte sur un système, ainsi que sur le procédé correspondant, permettant de transférer en continu des solides d'un réservoir de stockage à faible pression (10) vers une citerne d'alimentation (30) à pression plus élevée, utilisable dans des domaines tels que celui des hauts fourneaux (40) et faisant intervenir une pompe (20) à solides fonctionnant sous haute pression et à vitesse variable. Un dispositif de fluidisation déverse des solides dans un flux en phase quasi-liquide en direction d'un dispositif de désaération (15) destiné à la désaération du flux de solides avant son entrée dans une pompe à solides (20) fonctionnant sous haute pression et à vitesse variable. L'orifice de sortie (31) d'une citerne d'alimentation (30) est raccordé à l'orifice de sortie (21) de la pompe (20) à solides, la citerne d'alimentation (30) étant soumise à une pression plus élevée que celle régnant au niveau de la source de solides.

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