Liquid circulator useful for dispersing sediment contained in a storage tank

Abstract From the Canadian patent

A method and apparatus for cleaning the interior of storage tanks of the type used for storing large volumes of liquids, such as crude oil, wherein hydrocarbon sludge accumulates with the passage of time, such apparatus comprising a hollow housing, liquid agitation means including a plurality of nozzled outlet jets laterally rotatably mounted on the housing in fluid communication with the hollow interior thereof, connecting means comprising an independently rotatable tubular casing rotatably mounted on the housing in fluid communication with the interior thereof the tubular casing, having a kelley mounted therein and being operatively connected with the nozzled outlet jets, and multi-joint …