纸浆

According to the bleaching, dyeing, detergents, paper pulp can be divided into chemical pulp and mechanical pulp, the former is manufacturing quality of the paper, such as paper, the Bible paper etc; the latter paper for manufacturing par value, such as newsprint.

依漂染洗涤方法的不同，纸浆又可分为化学纸浆及机械纸浆，前者为制造品质优良的纸张，如书纸、圣经纸等；后者为制造平价的纸张，如新闻纸。

The adsorption characteristics of high charge density cationic polyamine on pulp fibers were studied in this paper.

摘 要：通过测量纸浆Zeta电位及聚合电解质的吸附量，研究了高电荷密度阳离子聚胺在纸浆纤维上的吸附特性，并将吸附聚胺后的纤维抄纸进行纸浆性能分析。

Concerning deinked pulp, the model between pulp reflect ratio at 840nm or 940nm and the ERIC value are presented basing on the normal method ERIC950. After the model is calibrated by the OMG and ONP reflect experiments and by simulationg lacal deinked pulp circular system, the correlation coefficient is 94.6%. The function between pulp factual brightness and 460nm reflective ratio is also developed and the correlation coefficient is 94.5%.

内的概率达92.8%；对于脱墨浆，以ERIC950为基准，建立了纸浆840nm或940nm反射因数与ERIC值之间的函数关系，分别用OMG和ONP浆片的反射因数对模型的参数进行了整定，模型与残余油墨含量真实值线性相关性达94.6%；建立了纸浆真实亮度值与纸浆460nm反射因数之间的函数关系，纸浆亮度测量模型与真实值线性相关系数达94.5%。

Several typical sodium dithionite bleaching processes,and its current situation of industrial application and research were introduced in this paper.

保险粉是一种常用的还原性纸浆漂白剂，该文介绍了几种典型流程以及保险粉在纸浆漂白中的应用和研究现状，分析了保险粉纸浆漂白的性能、环境影响和成本。

Not only had it theoretical meanings to enrich contents of the long-term-site productivity study, to promote the development of related disciplines. But also it had practical significance to raise the pulp plantation productivity, to ensure the pulpwood sustainable production, to guarantee our country pulp and paper industry security.

开展速生纸浆林长期立地生产力维持理论及关键技术的研究，不仅丰富我国森林长期立地生产力研究的内容，促进相关学科的发展，具有一定的理论意义，而且对提高我国纸浆林生产力，确保我国纸浆原料的可持续生产，保障我国制浆、造纸工业的产业安全具有十分重要的实践意义。

It is a high-tech enterprise established jointly by SCUT and the professor of the university in 1990s.

本公司成立于上世纪九十年代，是由华南理工大学和大学的教授共同组建的高新技术企业，专注于纸浆模塑成套生产线的研发、制造、销售，同时也有纸浆模塑模具、纸浆模塑产品的生产和销售。

The Stained pulp curve in different head are described as: elliptical dished head: H=178. 78+0.5926R-0.0141R〓 semispherical head: H=146. 76+0.0093R-0.0071R〓 conical dished head (α=27°): H=118. 2+0.0248R-0.0061R〓 conical dished head (α=23°): H=151. 7-0.1024R-0.0065R〓 If only for the quality and the efficiency of bleach of up-flow reactor, the conical dished head is the best option with the good engineering feasibility.

对实验数据处理回归后得到流经椭圆形封头时纸浆分布曲线方程；流经球形封头时纸浆分布曲线方程；流经锥形封头（半锥角27°）时纸浆分布曲线方程；流经锥形封头（半锥角23°）时纸浆分布曲线方程。

The alkali dosage depends mainly on the constituents and property of material and the quality requirements for pulp: more alkali dosage will speed up cooking process, reduce the hardness of pulp and improve the bleachability of pulp; but excessive alkali dosage will lower the pulp yield and physical intensity, while too less alkali dosage will result in harder and darker pulp, uneasy to bleach, too much screenings, and even extending cooking time cannot guarantee the reaction of delignification.

用碱量主要取决于原料的组成和性质及对纸浆的质量要求：加用碱量有利于加快蒸煮速度降低纸浆硬度和提高纸浆的可漂性：但过高却会降低纸浆得率和物理强度，如过低时，成浆较硬而色暗，不易漂白而且筛渣多即使延长蒸煮时间也难以保证脱木素反应进行。

The invention relates to a middle-density pulp hydrogen dioxide dual-tower blanch method, which comprises:(1) washing and concentrating the pulp;(2) adding NaOH in 0.5-1.5%, sodium silicate in 0.5-3%, bitter salt in 0.05-0.5% and barium dioxide in 1.0-2.5%,, and adding slurry to 70-100Deg. C;(3) 1# blanch tower blanches, while the temperature is 70-100Deg. C, and the reaction time is 30-90mins;(4) 2# blanch tower blanches, while adds barium dioxide in 0.5-1.5% and some blanch agent, while keeps the temperature in 70-100Deg. C and the reaction time is 30-90mins;(5) adding water, and washing to attain blanch slurry.

本发明公开一种中浓纸浆过氧化氢双塔漂白方法，包括(1)纸浆洗涤浓缩；(2)加入绝干浆重量的0.5～1.5％NaOH、0.5～3％硅酸钠、0.05～0.5％硫酸镁和1.0～2.5％过氧化氢等，将纸浆加热至70～100℃；(3)1#漂白塔漂白：温度为70～100℃，反应时间为30～90分钟；42#漂白塔漂白：补加0.5～1.5％的过氧化氢及适量漂白助剂，保持温度70～100℃，反应30～90分钟；(5)加水稀释、经洗涤后得漂白浆。

The result showed that after the treatment of the high-shear fiber kneader, the content of shives of the pulp will decrease 87％or more, the tensile index of the pulp sheets increases 22.6％, the tear index increases 28.8％, and the burst index increases 39.1％.

实验结果表明：纸浆中的纤维束去除率可达87％以上；纸浆纤维形态发生了变化，纤维的柔软度有所提高；纸浆的游离度略有下降，但对纸浆滤水性能影响甚微。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。