Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1999-05-21
2000-11-07
Gulakowski, Randy
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 2218, 134 24, 134168R, B08B 900, B08B 920
Patent
active
06142160&
ABSTRACT:
A method and apparatus for cleaning the interior of the 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 concentric hallow pipes, a spray nozzle for injecting a flushing fluid, and connecting means including a packing gland which allows the concentric pipes to be movably oriented inside a storage tank through a manway. With this construction, a flushing fluid can be sprayed into a sludge layer in the storage tank through the inner pipe and sludge/flushing fluid withdrawn through the annular region between the concentric pipes. The packing gland in the connecting means, and a second packing gland between the inner and outer pipes allows for independent movement of the pipes within the storage tank.
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Weber Larry J.
Winslow M. Craig
BetzDearborn Inc.
Boyd Steven D.
Chaudhry Saeed
Gulakowski Randy
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