Comparison the Bleachability of the DIP from Strong and Weak Alkaline Deinking 废纸强碱性与弱碱性浮选脱墨及漂白性能的比较
What Caused the poor bleachability of DIP fines? the two factors coming from external contamination were: residual ink and transition metals in pulp, specifically iron. 前言:什么使得脱墨浆细料的漂白反应性能差?是来自内部杂质的两个因素:残余油墨和过渡金属,特别是铁。
Enzyme-assisted bleaching not only can reduce chemical demands but also improve pulp bleachability. 酶法漂白在降低漂剂消耗,改善纸浆的可漂性方面具有一定的作用。
And Na+ in films will effect the bleachability. Fe 2+ and Fe 3+ in mixture were determined with satisfactory results. Na+在薄膜中影响褪色效果。Cr3+和Co2+有干扰。
Studies on Bleachability of RDH Pulp RDH浆漂白性能的研究
Bleachability of enzyme-deinked pulp was better than that of chemical-deinked pulp when using H 2O 2 as a bleaching agent. 利用过氧化氢进行漂白时,酶法脱墨浆的可漂性优于化学法脱墨浆。
The effects of variables in oxygen-alkali ( OA) bleaching of wheat straw soda pulps were elaborated, and the bleachability of OA pulp was discussed in detail. 详细探讨了碱法麦草浆氧碱漂白过程中诸因素的影响规律;
Preliminary Study on Xylanases for Boosting the Bleachability of Hard Wood Kraft Pulp 木聚糖酶对阔叶木KP浆漂白的初步研究
Effect of the Acid Stage in ECF Bleaching on Eucalyptus Globulus Kraft Pulp Bleachability and Strength ECF漂白中的酸处理对蓝桉硫酸盐浆漂白性能和强度的影响
During the bleaching process, there were no significant change of lignin structure unit. The conjugated carbonyl and quinoid structure had a close relationship with the pulp brightness and bleachability. 漂白过程中木素结构单元比例变化不大,木素中的碳基及醌型结构与纸浆白度有密切的关系。
On the base of discussing the influencing factor of bleachability, reaches three bleaching technology conditions. 在讨论了影响脱色率因素的基础上,研究出三者脱色的工艺条件;
The bleachability of the activated pulp was improved greatly and brightness gain could be as much as 30% ( SBD) with 1% H2O2. 该工艺的关键是选用了X木素活化剂,经活化的纸浆可漂性大大提高,1%H2O2漂白白度增值可达30%(SBD)以上。
Studies on Bleachability of Soda False Indigo Pulp 紫穗槐碱法纸浆的漂白性能研究
Effect of Fines in Deinked Pulp on Their Bleachability 脱墨浆中细料对纸浆漂白的影响
The bleachability of steam-exploded pulp from wheat straw was studied, and the optimum techniques of H2O2 bleaching have been discussed. 主要是对汽蒸爆破麦草浆的漂白可行性及H2O2漂白的最佳工艺进行了探讨。
A study on alkaline sulfite pulping of wheat straw shows that the addition of formaldehyde accelerates delignification rates and improves delignification selectivity, strength properties of the final paper and the bleachability of the pulp. 本文通过时麦草碱性亚硫酸盐蒸煮的研究表明,添加一定量的甲醛,有利于提高脱木素的速度和选择性,改善纸张的物理强度和漂白性能。
This paper studied the H_2O_2 bleachability of steam-exploded pulp from wheat straw. 对汽蒸爆破所得的麦草浆进行了H2O2漂白性的研究。
The results indicate that pinus taeda is a good fibrous raw material. Compared to conventional kraft pulp, modified kraft pulp has a lower kappa number, higher viscosity, bonding strength, and better bleachability. 实验结果表明,火炬松是优良的速生针叶木原料,采用改良硫酸盐法蒸煮工艺,可制得粘度高、强度好、可漂性较好的化学浆。
The results indicated that bagasse pulps with high yield, good strength and bleachability can be produced by neutral or alkaline potassium sulfite pulping. 实验结果表明,中性或碱性亚钾法可以制得得率高、强度和漂白性能好的蔗渣浆。
It was showed that squeezing extrusion could improve absorption of raw material for chemicals and reduce effect of extractive on H_2O_2 bleaching, so improve bleachability of white powdery bamboo CTMP. 结果表明,挤压疏解可以改善原料对药品的吸收,减少抽出物等杂质对H2O2漂白的影响,提高粉单竹CTMP的可漂性;
The kappa number of pulp was declined when adding desilication agent in cooking process, which revealed that the loss of bleachability was not due to the increase of reducing substances ( like lignin), but because of the interference of desilication agent and silicide during bleaching process. 除硅剂的添加使成浆硬度有所降低,说明可漂性损失并不是由于浆中木素等还原性物质的增加造成的,而是除硅剂及留在浆中的硅化物对漂白过程造成干扰。
White liquor prepreg KP pulp had a better bleachability and can increase alpha-cellulose content easily. 白液预浸KP法浆料可漂性更好,α-纤维素含量容易提高。
Lignin-carbohydrate bonds prevent removal of lignin from carbohydrates in pulping and bleaching, decrease pulp bleachability. 木素-碳水化合物的键合阻碍了制浆漂白过程木素的溶出,降低纸浆漂白能力。