Method and apparatus for recovering products of low pumpability
AssigneeInstitut Francais du Petrole
InventorMaurice Cessou
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Abstract
This method and apparatus comprises displacing the product to be removed from a tank by forming and permanently maintaining at the upper part of the tank, above the product, an aqueous phase filling progressively the tank as the product is removed through a drain pipe. Jets of hot water are introduced into this aqueous phase and a secondary injection is effected in said aqueous phase above the level of these jets.
Claims6
A method for removing from a tank a product difficult to pump, comprising connecting to the tank at least one drain pipe, feeding the tank with hot water and discharging the product through the pipe as the hot water is introduced into the tank, wherein an aqueous phase is formed and permanently maintained at the upper part of the tank above the product to be removed, by introducing the hot water in the form of at least one striking and stirring jet in said aqueous phase located above the product, and discharging the product dispersed in said aqueous phase.
Dependencies are inferred from the claim text.