发明名称 |
Method for directly heating concentrated sulfuric acid by electric current flow between surface-passivated electrodes |
摘要 |
A method is provided for directly heating a concentrated sulphuric-acid solution by passing alternating electric current between surface-passivated electrodes immersed in the solution and by using electrodes of iron or an iron alloy having a low resistance iron or iron alloy inner core covered by an outer high resistance passivating surface layer which are so surface-passivated that the transition resistance between the electrodes and the concentrated sulphuric-acid solution is at least as great as the resistance exerted by the concentrated sulphuric-acid solution.
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申请公布号 |
US4251715(A) |
申请公布日期 |
1981.02.17 |
申请号 |
US19770858078 |
申请日期 |
1977.12.06 |
申请人 |
BOLIDEN AKTIEBOLAG |
发明人 |
PETERSSON, STIG A.;NORROE, ALLAN F. |
分类号 |
C01B17/88;F22B1/30;H05B3/03;(IPC1-7):H05B3/60 |
主分类号 |
C01B17/88 |
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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