Method of pressure pulse cleaning a tube bundle heat exchanger

Cleaning and liquid contact with solids – Processes – Including application of electrical radiant or wave energy...

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15 1, 134 17, 134 2212, 134 2218, 134 37, 165 95, 376316, B08B 312, B08B 500, B08B 902

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046558462

ABSTRACT:
The present invention relates to an improved method of cleaning a tube bundle heat exchanger by removing the buildup of sedimentation or "sludge" which accumulates in the bottom or at other elevations of a heat exchanger vessel through utilization of a repetitive shock wave induced in the liquid layer above the sludge. The shock waves are induced by air-gun type pressure pulse shock wave sources or pressurized gas-type pressure pulse shock wave sources. The shock wave serves to effectively and safely loosen the products of corrosion and other elements which settle at the bottom of the heat exchanger or steam generator and thereby facilitates their easy removal through flushing and vacuuming the vessel.

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