废纸脱墨浆的甲脒亚磺酸漂白

Formamidine Sulphinic Acid (FAS) Bleaching of Deinked Pulp

介绍了用甲脒亚磺酸 (FAS)漂白彩色混合废纸脱墨浆和高白度办公废纸脱墨浆的实验情况 ,探讨了FAS用量、NaOH和FAS用量比、浆浓、漂白温度和时间对漂后纸浆白度的影响 ,并进行了H2 O2 FAS两段漂白 ,比较了FAS、H2 O2 单段漂白和H2 O2 FAS、FAS H2 O2 两段漂白的效果。实验结果表明 。

The waste paper deinked pulp was bleached with formamaidine sulphinic acid(FAS) or hydrogen peroxide and FAS The effects of FAS charge,ratio of NaOH to FAS,pulp consistency,temperature and time for FAS treatment on the brightness gain,color reduction and pulp strength were studied The results of H 2O 2 FAS and FAS H 2O 2 two stage bleaching were compared The experimental results indicate that FAS is an effective bleaching and decolorizing agent for deinked pulp