ANTICORROSIVE STEEL PIPE

PROBLEM TO BE SOLVED: To simultaneously prevent oxygen corrosion of an inner surface generated by flowing of water (non-deairing) at an ambient temperature and sulfuric acid corrosion of an outer surface generated by adhesion of sulfuric acid to the outer surface due to dewing, in the case of attain...

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Bibliographische Detailangaben
Hauptverfasser:	WAKAO YUTAKA, TERAMOTO NORIMUNE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To simultaneously prevent oxygen corrosion of an inner surface generated by flowing of water (non-deairing) at an ambient temperature and sulfuric acid corrosion of an outer surface generated by adhesion of sulfuric acid to the outer surface due to dewing, in the case of attaining increase of a recovery heat from exhaust gas in an economizer of a boiler. SOLUTION: An economizer 10 is constituted of an anticorrosive steel pipe formed in a double pipe structure which comprises an inner surface side formed of a stainless steel pipe 1 and an outer surface side formed of a sulfuric acid dew point corrosive resistant steel pipe 2.