【摘要】 对活性红 3BS染料进行了纳滤中试实验 .结果表明 ,利用合适的纳滤膜对该染料进行脱盐浓缩是可行的 .该方法不仅可以大幅度降低染料合成浆液中的无机盐含量 ,并可对染料浆液浓缩达 3倍左右 ,使染料的着色强度和含固量明显提高 ;染料的损失率极低 ,同时对副染料也可以部分脱除 .更多还原

【Abstract】 The application of nanofiltration in the pilot-scale pre paration of reactive red 3BS has been studied. It was shown that it was feasible for an appropr iate nano filtration membrane to desalt and concentrate the dyestuff. It can not only grea tly reduce the inorganic salt content in the raw synthetic dye solution, but als o concentrate it by a factor of up to 3, thus considerably improving the dye st rength and the content of the product dye. At the same time, loss of the product dye was rather low, and the by-products can be partly removed.更多还原