麦草浆漂白新工艺的研究  

Study on New Bleaching Technic of Wheat Straw Pulp

作　　者：刘哲[1] 刘忠[1] 

机构地区：[1]天津市制浆造纸重点实验室天津科技大学材料科学与化学工程学院,天津300457

出　　处：《天津科技大学学报》2008年第4期6-8,13,共4页Journal of Tianjin University of Science & Technology

摘　　要：在传统的麦草CEH漂白制浆过程中,污染物的排放量是非常高的.本实验的目的是建立麦草浆氧气漂白新漂程,旨在充分利用廉价的氧气,减少传统CEH漂白过程中烧碱及氯水的用量,降低高白度草浆制备过程中的成本及污染物排放量,从而获得一种更为廉价、清洁的漂白工艺.实验以麦草浆为浆料,采用COH漂程,即在传统的CEH漂程中的氯化段(C段)之后,以氧脱木素段(O段)替代传统的碱处理段(E段),实现降低漂白过程中氢氧化钠的消耗及污染物的排放量.同时,用相同的原料进行传统的CEH漂白作为比较,.测定所得漂白浆的黏度、白度等各项物理性能.结果表明,采用COH漂白能够获得高白度、低卡伯值、物理性能较好的纸浆,并可降低化学药品用量,实现廉价、清洁漂白的目标.Traditionally,the emissions of pollutants from CEH bleaching were relatively huge. In this paper the new bleaching process of wheat straw with O2 was studied, to make fully use of O2 to obtain high brightness wheat straw pulps. Wheat straw pulps were used as brown pulp and three-stage bleaching of COH were adopted, in which the O stage was used to replace the E stage of traditional CEH bleaching. CEH bleaching was also carried out as comparison. Finally the brightness, viscosity and other mechanical properties of bleached pulps were measured. The results show that wheat straw pulp with high brightness, low kappa number and good physical properties can be obtained through COH bleaching process.

关 键 词：麦草浆 CEH三段漂 COH三段漂 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]