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US 5,635,095 AGranted
Method for opening discharge outlets
AssigneeChampion International Corporation
InventorJack M. Kleinfeld
Life of this patent
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AssigneeChampion International Corporation
InventorJack M. Kleinfeld
Estimating the term…
A method for shutting down and starting up a chemical recovery process of the type comprising burning concentrated black liquor in the furnace of a recovery boiler to produce a flue gas and a hot molten smelt in the bottom of said furnace and discharging the hot molten smelt in a continuous yet variable quantity via a smelt spout into a dissolving tank partially filled with an aqueous solution, said method comprising: inserting an elongated heating element into said spout; shutting down said boiler with said element in said spout such that on solidification of molten smelt in said spout said element is fixed in said solidified smelt; and starting up said boiler by heating said element to a temperature equal to or greater than the melting point of said smelt to form molten smelt and removing said element from said spout to provide a substantially open spout for discharge of said molten smelt from said furnace.
A method for shutting down and starting up a chemical recovery process in which a concentrated black liquor is burned in a furnace to produce a gas and a hot molten smelt in the bottom of said furnace and the hot molten smelt is discharged from said furnace via a smelt spout, said method comprising:
A method for shutting down and starting up a process for forming a hot molten material in a vessel, and discharging said molten material from discharge outlet of said vessel, said method comprising:
A method for opening a discharge outlet of a vessel for use in forming a molten material in said vessel, and discharging said molten material from said vessel via said outlet wherein a material has solidified in said outlet preventing the discharge of material from said vessel, said method comprising:
A method for opening a smelt spout of a furnace used in a chemical recovery process in which a concentrated black liquor is burned in the furnace to produce a gas and a hot molten smelt in the bottom of said furnace and the hot molten smelt is discharged from said furnace via a smelt spout where said smelt has solidified in said spout preventing the discharge of smelt from said furnace, said method comprising:
Dependencies are inferred from the claim text.