在碱法制浆过程中同步除硅──中型试验  

Desilication in alkaline pulp processes－A pilot plant scale experiment

作　　者：汪苹[1] 邹培昌 张珂[1] 崔莉凤[1] 吴强[1] 梁瀛洲[1] 

机构地区：[1]北京轻工业学院化工系

出　　处：《中国环境科学》1995年第6期443-446,共4页China Environmental Science

摘　　要：在制备高硅含量原料的碱法蒸煮液时，把一种主要成份为氧化铝的除硅剂加到配碱槽内（或直接加到蒸煮锅内），通过蒸煮，该除硅剂能与原料中硅生成不溶物附着在浆料上，达到降低黑液硅含量的目的。此方法适用于各种碱法制浆过程，对于麦草硫酸盐法，除硅剂用量为原料的２．５％时，黑液除硅率可达到９０％以上。通过１８×４０ｍ３蒸球的中型试验证实，本方法不仅能有效地除硅；还能显著地改善黑液有关蒸发、燃烧的粘度和膨润容积系数（ＶＩＥ）等理化性质，且对浆料质量及后续制浆、造纸操作无不良影响，对实现稻、麦草碱回收有十分重要的现实意义。In the alkaline digestion of silica-contaminated pulp raw material,addition of desilication agent to the white liquor or directly to the digester can insolubilize silica as a precipitate to adhere on the pulp, with the desilication rate of the black liquor from wheat KP processes above 90%. This is also suitable for other alkaline Pulp process, such as alkaline-sulfite or soda-anthraquinone process. All data of a 18×40m3 pilot plant scale desilication experiment show it not only efficiently desilicates but also obviously improves two important physico-chemical characters of black liquor─viscosity and volume-index of expansion, which is of vital to evaportion and burning.

关 键 词：除硅 黑液 制浆 造纸 废水处理 

分 类 号：TS743.11[轻工技术与工程—制浆造纸工程] X793.03[环境科学与工程—环境工程]