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DECELERATION OF SCALE FORMATION ON STEEL DURING HEATING BY EMULSIFIED OIL |
HUANG Meifen;SUN Ying;SONG Jialong;ZHAO Changyu Shanghai Research Insitute of Materials |
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Cite this article:
HUANG Meifen;SUN Ying;SONG Jialong;ZHAO Changyu Shanghai Research Insitute of Materials. DECELERATION OF SCALE FORMATION ON STEEL DURING HEATING BY EMULSIFIED OIL. Acta Metall Sin, 1991, 27(1): 137-140.
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Abstract According to both theoretical analysis and practice, the decelerationof scale formation on the steel during direct fire heating was adopted by injectionof the water-in-oil emulsified fuel oil, replacing the conventional heavy oil, withan emulsifying equipment. To put into productive practice, the relative deceleratingrate after data from the Shanghai Pressure Vessel Plant and the Shanghai SteelWorks No. 3 is about 20 and 15% respectively. Mossbauer spectra showed that theFe_3O_4 content is much abundant in the scale, especially in its inside layer duringfiring the emulsified fuel oil, The reason, why the scale formation might berecelerated, seems to be a protective Fe_3O_4 film is formed and an excess of oxygenis reduced.
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Received: 18 January 1991
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1 川口胜德,伊藤孝宏.公开特许公报,(A),昭64-83331. 1989 2 朝日澄雄.公开特许报,(A),昭60-213328,1985 3 Barin I, Knacke O. Thermochemical Properties of Inorganic Substances, Berlin: Springe Verlag, 1973: Ⅷ--ⅩⅣ 4 赵昌裕,孙瑛,黄梅芬.上海节能,1985;(12) :6 5 黄梅芬,孙瑛,赵昌裕.上海节能,1987;(9) :6 |
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