废油脂制备表面活性剂及在浮选脱墨中的应用  

Preparation of Surfactants from Waste Oil and Application in Flotation Deinking

作　　者：唐振[1] 胡硕[1] 孙广卫[1] 韩颖[1] 周景辉[1] 

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《中国造纸》2017年第5期25-29,共5页China Pulp & Paper

基　　金：基金项目:辽宁省科技厅;基于纤维素纳米晶体模板的二氧化钛纳孔薄膜材料的制备(201602054)

摘　　要：以废弃食用油(简称废油脂)为原料,合成了两种废纸脱墨常用的表面活性剂:脂肪酰胺丙基二甲基胺和脂肪酰胺型季铵盐;通过条件实验获得两种表面活性剂的最佳合成条件;考察了两种表面活性剂对旧报纸的浮选脱墨效果,并与市售表面活性剂(AEO-9和皂钠)进行比较。结果表明,脂肪酰胺丙基二甲基胺的最优合成条件为:反应温度110℃,反应时间2 h,物料摩尔比1∶1.1,转化率62%;脂肪酰胺型季铵盐的最优合成条件为:以异丙醇作溶剂,反应温度72℃,反应时间0.5 h,溶剂用量20%,转化率82.7%。两种表面活性剂单独使用时,脱墨后纸浆白度均高于采用市售表面活性剂AEO-9和皂钠的,两种表面活性剂以1∶1比例复配后使用,脱墨后纸浆白度可达54.3%,这两种表面活性剂均可与AEO-9复配使用,且效果比单独使用AEO-9时纸浆白度可分别提高7.3个百分点和5.6个百分点。Two kinds of surfactants fatty amide propyl dimethyl amine and fatty amide type quaternary ammonium salt could be synthesized by waste edible vegetable oil （Abbreviation： waste oil）. The optimal conditions of synthesizing fatty amido propyl dimethyl amine were obtained by conditional experiments with temperature of 110℃, time of 2 h, material ratio of 1：1.1, conversion rate of 62% ; the optimal conditions of synthesizing fatty acid type quaternary ammonium salt using isopropyl alcohol as solvent were determined as the follows： temperature 72℃, time 0. 5 h, solvent content 20%, conversion rate 82. 7%. This paper verified the deinking effenciencies of these two surfactants for old newspaper, and compared their deinking results with AEO-9 and commercial soap. Results showed that the deinked pulp brightness using these two surfactants separately was superior to AEO-9 and commercial soap, the brightness of the pulp deinked with the mixture of these two surfactants in the ratio of 1：1 could reached to 54. 3%, these two surfactants mixed with AEO-9 separately could achieve 6 and 6 percentage points higher brightness than using AEO-9 alone.

关 键 词：废弃食用油 表面活性剂 酰胺类表面活性剂 季铵盐表面活性剂 

分 类 号：TQ423[化学工程] TS727[轻工技术与工程—制浆造纸工程]