发明名称 |
Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators |
摘要 |
A method of monitoring and inhibiting scale precipitation and deposition from spent liquor in pulp mill evaporators and concentrators is disclosed. The method includes connecting a black liquor deposition monitor to a pulp mill evaporator or concentrator and measuring the thermal conductivity on the outer surface of the monitor. A controller interprets the measured thermal conductivity and determines a level of scale deposition. If the level of scale deposition is above a predetermined level, the controller is operable to introduce a scale-inhibiting composition to the spent liquor. The scale-inhibiting composition may include organic polycarboxylic acids; organic fatty acids; low molecular weight and polymeric aromatic acids; organic acid esters, anhydrides, and amides; low molecular weight and polymeric aliphatic and aromatic sulfonic acids; and low molecular weight and polymeric amines; and any combinations. |
申请公布号 |
AU2008251506(B2) |
申请公布日期 |
2012.07.19 |
申请号 |
AU20080251506 |
申请日期 |
2008.05.09 |
申请人 |
NALCO COMPANY |
发明人 |
DUGGIRALA, PRASAD Y.;KOUZNETSOV, DMITRI L.;SHEVCHEKO, SERGEY M. |
分类号 |
D21C11/10;D21C3/22;D21C9/00 |
主分类号 |
D21C11/10 |
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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