发明名称 |
Method for rapidly determining a pulp kappa number using spectrophotometry |
摘要 |
A system and method for rapidly determining the pulp kappa number through direct measurement of the potassium permanganate concentration in a pulp-permanganate solution using spectrophotometry. Specifically, the present invention uses strong acidification to carry out the pulp-permanganate oxidation reaction in the pulp-permanganate solution to prevent the precipitation of manganese dioxide (MnO2). Consequently, spectral interference from the precipitated MnO2 is eliminated and the oxidation reaction becomes dominant. The spectral intensity of the oxidation reaction is then analyzed to determine the pulp kappa number.
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申请公布号 |
US6475339(B1) |
申请公布日期 |
2002.11.05 |
申请号 |
US20000586324 |
申请日期 |
2000.06.02 |
申请人 |
LNSTITUTE OF PAPER SCIENCE AND TECHNOLOGY, INC |
发明人 |
CHAI XIN-SHENG;ZHU JUN YONG |
分类号 |
D21C3/22;(IPC1-7):D21C7/12;G01N21/25 |
主分类号 |
D21C3/22 |
代理机构 |
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