发明名称 |
Process for the protection against corrosion of cast iron boilers |
摘要 |
Gray cast iron can be protected against corrosion by the vapors of boiling concentrated sulfuric acid when a compound containing positive nitrogen, e.g., nitrogen oxide, is introduced into the gas space between the cast iron to be protected and the boiling sulfuric acid.
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申请公布号 |
US4148858(A) |
申请公布日期 |
1979.04.10 |
申请号 |
US19770796456 |
申请日期 |
1977.05.12 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
VON PLESSEN, HELMOLD;BODENBENNER, KURT |
分类号 |
F28F19/00;C01B17/88;C23F11/02;(IPC1-7):C23F11/02;C23F11/04 |
主分类号 |
F28F19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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