发明名称 |
Scale deposit inhibitor for kraft digesters and method for controlling scale deposition in kraft digesters |
摘要 |
A scale deposit inhibitor and a method for continuously controlling scale deposition applicable to a digester and its peripheral equipment used in kraft pulp manufacture are disclosed, the scale deposit inhibitor comprising a maleic acid-acrylic acid-hypophosphorous acid terpolymer having a maleic acid unit to acrylic acid unit molar ratio of 1:4 to 4:1, a hypophosphorous acid unit content of 1 to 12 mol %, and a weight average molecular weight of 500 to 10000. The scale deposit inhibitor is added to a cooking liquor in a concentration of 0.01 to 10 ppm per ppm of a calcium ion in the cooking liquor.
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申请公布号 |
US5409571(A) |
申请公布日期 |
1995.04.25 |
申请号 |
US19940189649 |
申请日期 |
1994.02.01 |
申请人 |
HAKUTO CO., LTD. |
发明人 |
TOGO, AKIRA;SHIBATA, TAKANORI |
分类号 |
C02F5/00;C02F5/08;C02F5/10;D21C3/22;(IPC1-7):D21C7/14 |
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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