Process for cleaning tube type heat exchangers

Details Process for cleaning tube type heat exchangers Process for cleaning tube type heat exchangers

F - Mech Eng,Light,Heat,Weapons

28

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257/1, 15/12

F28G 1/12 (2006.01) F28F 19/00 (2006.01) F28G 9/00 (2006.01)

Patent

CA 1279638

ABSTRACT An improved process for cleaning heat exchanger tubes using propellant water to shoot a cleaning member eg., a pig, brush, scraper, or similar device through the heat exchanger tubes. The improvement includes adding treatment chemicals individually or in combination to the propellant water so that corrosion, mechanical wear, or scaling of the heat exchanger tubes are controlled. The treatment chemicals include, eg., ferrous sulfate, sodium hypochlorite, or hydrogen peroxide. Other chemicals, such as oxidizers, reducers, acids, bases, inorganics and organics when added in sufficient concentration will reduce heat exchanger tube corrosion, mechanical wear and scale.

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