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US 7,581,905 B2Granted
Vessel for storing particulate matter and discharge device for use in the same
AssigneeShell Oil Company
InventorWouter Detlof Berggren
Life of this patent
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AssigneeShell Oil Company
InventorWouter Detlof Berggren
Estimating the term…
The invention pertains to a vessel (1) for storing particulate matter, such as pulverised coal or fly ash, comprising a main part (2) and, at its bottom portion, at least one discharge device (3), which comprises a converging outer shell (10) and a permeable, converging inner shell (14) positioned in the outer shell (10), the discharge device (3) being connected to the main part (2) by means of a first flange (9) at or near the lower rim of the bottom portion of the main port (2) and a second flange (11) at or near the upper rim of the outer shell (10). The inner shell (14) is secured to the inner wall of the outer shell (10) of the discharge device (3), preferably to the inner wall of the second flange (11). Thus, the number of gaskets is reduced and/or the positioning of the inner shell becomes less critical.
A discharge device for use in a vessel for storing particulate matter, comprising a converging outer shell and a permeable, converging inner shell positioned in the outer shell, the inner shell comprising an upper rim, wherein the inner shell is secured at or near its upper rim to an inner wall of the outer shell forming a connection between the inner shell and the outer shell, wherein the connection between the inner shell and the outer shell is sealed by means of a gasket and is contained within the outer shell.
A vessel for storing particulate matter, comprising a main part and, at a bottom portion thereof, at least one discharge device, which comprises a converging outer shell and a permeable, converging inner shell positioned in the outer shell, the inner shell comprising an upper rim, the discharge device being connected to the main part by means of a first flange at or near a lower rim of the bottom portion of the main part and a second flange at or near an upper rim of the outer shell, whereby the inner shell is secured at or near its upper rim to the inner wall of the outer shell of the discharge device thus forming a connection between the inner shell and the outer shell, wherein the connection between the inner shell and the outer shell is sealed by means of a gasket and is contained within the outer shell.
Dependencies are inferred from the claim text.