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首页> 外文会议>New Technologies in Non-wood Fiber Pulping and Papermaking >RELEASE OF ANIONIC TRASHES AND THE EFFECT OF THEM ON DRAINAGE PROPERTIES OF OLD NEWSPRINT DEINKED PULP
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RELEASE OF ANIONIC TRASHES AND THE EFFECT OF THEM ON DRAINAGE PROPERTIES OF OLD NEWSPRINT DEINKED PULP

机译：阴离子槽的释放及其对旧新闻纸浆纸浆排水性能的影响

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摘要

Some anionic dissolved and colloidal substances which are called anionic trashes will release during the pulping of wastepaper. These substances will affect the runnability of paper machines and the properties of paper. The effect of sodium of hydroxide (NaOH), hydrogen peroxide (H_2O_2) and temperature on the release of anionic trashes was studied. The effect of anionic trashes on the drainage properties of deinked pulp (DIP) was also investigated in this article.The results showed that the cationic demand and the conductivity increased with the increase of NaOH dosage and temperature. When the NaOH dosage was lower, the increase of the cationic demand with the increase of H_2O_2 dosage was more obvious than that when the NaOH dosage was higher. The drainage rate decreased due to the addition of anionic trashes. If polyethylenimine (PEI) was added prior to cationic polyacrylamide (CPAM), the drainage rate increased at the beginning and decreased later with the increase of PEI dosage.
机译：在废纸制浆过程中会释放出一些阴离子溶解和胶体物质，称为阴离子垃圾。这些物质会影响造纸机的运行性能和纸张性能。研究了氢氧化钠（NaOH），过氧化氢（H_2O_2）和温度对阴离子废料释放的影响。本文还研究了阴离子垃圾对脱墨纸浆（DIP）排水性能的影响。结果表明，随着NaOH用量和温度的升高，阳离子需求量和电导率均增加。当NaOH用量较低时，随H_2O_2用量的增加，阳离子需求量的增加明显高于NaOH用量较高时的增加。由于添加了阴离子垃圾，排水速率降低了。如果在阳离子聚丙烯酰胺（CPAM）之前添加聚乙烯亚胺（PEI），则排水速率在开始时会增加，而在PEI剂量增加时会降低。

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