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US 8,298,476 B2Granted
Dust collection system for calcine transfer container
AssigneeHatch Ltd.
InventorsSean David Southall, Anthony Porretta, Weiguo Wang, Michael Trovant
Life of this patent
Estimating the term…
Abstract
A system for controlling emissions of gas and dust during transfer of a hot feed material from a movable transfer container to a stationary feed bin of a furnace. The system includes an upper duct section which is associated with the movable transfer container, and a lower duct section associated with the feed bin. The lower duct section is attached to a main collection duct with a dust collection fan. The two duct sections are brought into close proximity with one another when the transfer container is brought into position for discharge to the feed bin, so as to form a continuous gas passage throughout the duct sections.
Claims16
A system for controlling emissions of gas and dust during transfer of a feed material from a transfer container to a feed bin of a furnace, comprising:
- a first duct section located in close proximity to a side wall of the transfer container, the first duct section comprising a first conduit and a lower dust collection fitting, the lower dust collection fitting having a lower intake port which is proximate to a bottom opening of the transfer container, and the first conduit having an interior in communication with the lower intake port, and having an open end located proximate to the lower end of the transfer container;
- a second duct section located in close proximity to the feed bin of the furnace, the second duct section comprising a second conduit having a inlet end with an inlet opening and an outlet end with an outlet opening;
- wherein the inlet end of the second conduit is adapted to be in close proximity to the open end of the first conduit when the transfer container is in position to discharge said hot feed material into the feed bin, and with the inlet opening of the second conduit in communication with the open end of the first conduit, thereby forming a continuous gas flow passage from the lower intake port of the first duct section to the outlet end of the second duct section;
- wherein the first duct section further comprises an upper dust collection fitting having an upper intake port located proximate to a top opening of the transfer container, said upper dust collection fitting comprising a hood which is pivotable between a first position in which the hood covers the top opening of the transfer container with the upper intake port in substantial alignment with the top opening, and a second position in which the hood is in a non-obstructing position relative to the top opening of the transfer container.
1 more element
A system for controlling emissions of gas and dust during transfer of a feed material from a transfer container to a feed bin of a furnace, comprising:
- a first duct section located in close proximity to a side wall of the transfer container, the first duct section comprising a first conduit and a lower dust collection fitting, the lower dust collection fitting having a lower intake port which is proximate to a bottom opening of the transfer container, and the first conduit having an interior in communication with the lower intake port, and having an open end located proximate to the lower end of the transfer container;
- a second duct section located in close proximity to the feed bin of the furnace, the second duct section comprising a second conduit having a inlet end with an inlet opening and an outlet end with an outlet opening;
- wherein the inlet end of the second conduit is adapted to be in close proximity to the open end of the first conduit when the transfer container is in position to discharge said hot feed material into the feed bin, and with the inlet opening of the second conduit in communication with the open end of the first conduit, thereby forming a continuous gas flow passage from the lower intake port of the first duct section to the outlet end of the second duct section;
- wherein the lower dust collection fitting comprises a shroud having a wall with an open top end and an open bottom end, wherein the wall of the shroud surrounds the bottom opening of the transfer container and is adapted enclose a space between the transfer container and the feed bin when the transfer container is in position to discharge said hot feed material into the feed bin, wherein the intake port of the lower dust collection fitting formed in the wall of the shroud and is in communication with the interior of the first conduit;
- and
- wherein the shroud is provided with a plurality of said lower intake ports, and wherein each of the lower intake ports is provided with a grating.
3 more elements
A system for controlling emissions of gas and dust during transfer of a feed material from a transfer container to a feed bin of a furnace, comprising:
- a first duct section located in close proximity to a side wall of the transfer container, the first duct section comprising a first conduit and a lower dust collection fitting, the lower dust collection fitting having a lower intake port which is proximate to a bottom opening of the transfer container, and the first conduit having an interior in communication with the lower intake port, and having an open end located proximate to the lower end of the transfer container;
- a second duct section located in close proximity to the feed bin of the furnace, the second duct section comprising a second conduit having a inlet end with an inlet opening and an outlet end with an outlet opening;
- wherein the inlet end of the second conduit is adapted to be in close proximity to the open end of the first conduit when the transfer container is in position to discharge said hot feed material into the feed bin, and with the inlet opening of the second conduit in communication with the open end of the first conduit, thereby forming a continuous gas flow passage from the lower intake port of the first duct section to the outlet end of the second duct section;
- wherein the lower dust collection fitting comprises a shroud having a wall with an open top end and an open bottom end, wherein the wall of the shroud surrounds the bottom opening of the transfer container and is adapted enclose a space between the transfer container and the feed bin when the transfer container is in position to discharge said hot feed material into the feed bin, wherein the intake port of the lower dust collection fitting formed in the wall of the shroud and is in communication with the interior of the first conduit;
- wherein the wall of the shroud is cylindrical and is sealed along its open top end to the sidewall of the transfer container, and wherein the open bottom end is provided with an inwardly extending flange which is adapted to seal against an upper surface of the feed bin, said upper surface of the feed bin surrounding an inlet opening of the feed bin;
- and
- wherein the bottom end of the shroud is provided with a flange which seals against the upper surface of the feed bin.
4 more elements
A system for controlling emissions of gas and dust during transfer of a feed material from a transfer container to a feed bin of a furnace, comprising:
- a first duct section located in close proximity to a side wall of the transfer container, the first duct section comprising a first conduit and a lower dust collection fitting, the lower dust collection fitting having a lower intake port which is proximate to a bottom opening of the transfer container, and the first conduit having an interior in communication with the lower intake port, and having an open end located proximate to the lower end of the transfer container;
- a second duct section located in close proximity to the feed bin of the furnace, the second duct section comprising a second conduit having a inlet end with an inlet opening and an outlet end with an outlet opening;
- wherein the inlet end of the second conduit is adapted to be in close proximity to the open end of the first conduit when the transfer container is in position to discharge said hot feed material into the feed bin, and with the inlet opening of the second conduit in communication with the open end of the first conduit, thereby forming a continuous gas flow passage from the lower intake port of the first duct section to the outlet end of the second duct section;
- wherein the outlet end of the second conduit is connected to a main collection duct;
- and
- wherein the main collection duct extends alongside the feed bin in close proximity thereto, and wherein the second conduit extends vertically between its inlet end and its outlet end.
3 more elements
A system for controlling emissions of gas and dust during transfer of a feed material from a transfer container to a feed bin of a furnace, comprising:
- a first duct section located in close proximity to a side wall of the transfer container, the first duct section comprising a first conduit and a lower dust collection fitting, the lower dust collection fitting having a lower intake port which is proximate to a bottom opening of the transfer container, and the first conduit having an interior in communication with the lower intake port, and having an open end located proximate to the lower end of the transfer container;
- a second duct section located in close proximity to the feed bin of the furnace, the second duct section comprising a second conduit having a inlet end with an inlet opening and an outlet end with an outlet opening;
- wherein the inlet end of the second conduit is adapted to be in close proximity to the open end of the first conduit when the transfer container is in position to discharge said hot feed material into the feed bin, and with the inlet opening of the second conduit in communication with the open end of the first conduit, thereby forming a continuous gas flow passage from the lower intake port of the first duct section to the outlet end of the second duct section;
- and
- wherein the first duct section and/or the second duct section are constructed so as to leave a gap between the open end of the first conduit and the inlet opening of the second duct section.
2 more elements
Dependencies are inferred from the claim text.