Liquid heaters and vaporizers – Cleaning
Patent
1976-11-19
1978-07-18
Sprague, Kenneth W.
Liquid heaters and vaporizers
Cleaning
122390, 165 95, F22B 3752
Patent
active
041008871
ABSTRACT:
A boiler of the type having a convection enclosure with convection surfaces in which the convection enclosure is partially enclosed by walls which form a downwardly closed water-tight container. These walls extend downwardly to at least the upper portion of the convection enclosure. Inlet and outlet piping and valves are provided for the water-tight container to permit the container to be filled with water for dissolving soot and other deposits on the convection surfaces in order to clear the surfaces and to remove the contaminated water from the water-tight container. The inlet piping is equpped with nozzles located above the convection enclosure to distribute the rinsing water on the convection surfaces. Chemicals may be mixed with the rinsing water for the purpose of neutralizing the contaminated water prior to removal. An electrode supplied by a source of direct current voltage is located inside the water-tight container with the direct current source also connected to the boiler wall and convention enclosure. A switch device is provided to reverse the polarity of the electrode and the boiler wall and convection enclosure.
REFERENCES:
patent: 1317658 (1919-09-01), Johnson
patent: 1565304 (1925-12-01), Bell
patent: 2103789 (1937-12-01), Mosshart
patent: 2949282 (1960-08-01), Kirkby
patent: 3415231 (1968-12-01), Reale
Malmstrom Karl Gunnar
Mattsson Karl Lennart
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