麦草浆次氯酸盐连续漂白工艺的研究

STUDY ON THE BEST TECHNOLOGICAL PARAMETERS OF HYPOCHLORITER CONTINUE BLEACHING OF WHEAT STRAW PULP

分别研究了常规和高温次氯酸盐漂白麦草浆的最佳工艺 ,并对高温状态下的 H和 HP管道连续漂白进行了探讨。结果表明 :高温 HP漂白可将麦草浆漂白至 73.5 % ISO,与传统的 H段漂白相比具有漂白时间短 (仅 12 min) ,白度相近 ,成纸物理强度相当等优势 ,但返黄值低 (1.3) ,适合采用管道漂白。漂白浆满足抄制各类中低档文化。

The technology of traditional and high temperature hypochlorite bleaching wheat straw pulp was studied on, and continuous pipeline bleaching by H & HP in high temperature was discussed. The result shows that 73.5% ISO brightness was gained with the sequence of high temperature HP bleaching. Compared to traditional H bleaching the technology has the characteristic of the shorter bleaching time, the higher brightness, lower yellowing value and the better strengthness. It is suitable for pipeline bleaching the straw pulp and the pulp meet with making a kind of intermediate and low degree cultural paper.