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  • 1
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Experience gained with titanium installations fed with sea and brackish waters and used for the seawater desalination and chemical process coolingTitanium and its alloys have proven their usefulness in various parts of desalination equipment, e. g. in the preheating sections and in the cooling zones. Experience in refineries has shown that titanium is resist-ant on the product side (build-up of chlorides and sulfides) as well as on the cooling water side and in the desulphuration zone (formation of H2S). In power plant condensors (impact corrosion) and in the degas-sing zone of such equipment (enrichment of CO2, NH3 and 02) titanium is superior to copper base structures and -at chloride levels exceeding 250 ppm -even to stain-less steel. Care should be taken in designing such equipment to eliminate structural crevices (crevice corrosion, in particular in tube sheets).
    Notes: Titan und dessen Legierungen haben sich in verschiedenen Teilen von Entsalzungsan lagen bewährt, z. B. in den Vorwärm und den Kühlzonen. Erfahrungen in Raffinerien zeigen, daß Titan sowohl auf der Produktseite (Akkumulation von Chloriden und Sulfiden) als auch in der Entschwefelungszone (Bildung von H2S) beständig ist. In Kraftwerkskondensatoren (Aufprallkorrosion) und in den Entgasungsteilen derartiger Anlagen (Anreicherung von CO2, NH3 und 02)ist Titan den entsprechenden Konstruktionen aus Kupferlegierungen und bei Chloridgehalten über 250 ppm auch Konstruktionen aus nichtrostenden Stählen überlegen. Bei der Konstruktion derartiger Anlagen ist darauf zu achten, daß konstruktive Spalten vermieden werden (Gefahr der Spaltkorrosion besonders in Rohrböden).
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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