发明名称 |
A calcium carbonate, magnesium hydroxide and calcium sulfate hemihydrate scale inhibitor. |
摘要 |
<p>A novel inhibitor of calcium carbonate, magnesium hydroxide and calcium sulfate hemihydrate scale comprises a mixture of a polymaleic acid or its salt, a phosphonic acid or its salt, and an iron sequestrant. From 0.1 to 100 ppm of this mixture is added to the water of a thermal or reverse osmosis desalination plant to control the formation and deposition of calcium carbonate, magnesium hydroxide and calcium sulfate hemihydrate scale.</p> |
申请公布号 |
EP0089189(A1) |
申请公布日期 |
1983.09.21 |
申请号 |
EP19830301332 |
申请日期 |
1983.03.10 |
申请人 |
CALGON CORPORATION |
发明人 |
LOGAN, DOUGLAS P.;WALKER, JERRY L. |
分类号 |
C02F5/00;C02F5/08;C02F5/10;C02F5/12;C02F5/14;C23F14/02;(IPC1-7):02F5/14;02F5/10 |
主分类号 |
C02F5/00 |
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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