高分子絮凝剂淀粉接枝丙烯酰胺的合成与应用  

Application and synthetic technology of polymeric flocculants St-AM

作　　者：降林华[1] 徐初阳[2] 邹立壮[1] 刘权[1] 

机构地区：[1]中国矿业大学化学与环境工程学院,北京100083 [2]安徽理工大学材料科学与工程系,安徽淮南232001

出　　处：《化学研究与应用》2007年第10期1070-1075,共6页Chemical Research and Application

基　　金：安徽省教育厅自然科学基金重点项目(2002kj284ZD);淮南市科技发展基金重点项目(2005)

摘　　要：通过对硝酸铈铵、过硫酸钾、高锰酸钾三种引发体系的筛选,探讨了引发剂种类及浓度、单体浓度、反应温度、反应时间、玉米淀粉与丙烯酰胺的质量配比等因素对接枝共聚的影响。正交试验表明,当引发剂用量为1.1mmol/L,淀粉用量为35 g/L,AM单体用量为1.48mol/L,反应温度为25℃,反应时间2 h时,粘度最高可达587.83m l/g。用IR、DSC等手段对反应的产物进行了分析表征。选用此接枝物用量50g/t干煤泥,辅以凝聚剂用量1.5kg/t干煤泥进行絮凝试验,有效解决了潘一选煤厂煤泥水中细粒含量多、压滤处理困难的特点,处理能力达75 t/h,滤饼水分可控制在25(左右,滤液水浓度在60g/L左右,与非离子型PAM相比,具有价廉、无毒、絮凝效果好等特点,从环保和应用方面为细粒煤泥水的处理与利用提供了一条有效的途径。From the experimental comparison of CAN, KPS, KMnO4 , investigating the effects on graft copolymerization of initiator variety and quantity, monomer quantity, starch quantity, temperature, time, St - Am quantity ratio. The normal experimental show：[initiator] = 1. lmmol/L, [starch ] =35g/L, [AM] = 1.48mol/L, [temperature] = 25℃, [time] = 2h, Tmax is 587. 83ml/g. Analyze and test the products by IR ＆ DSC. Effective resolving the characteristics of large quantity of fine coal in coal slurry and the difficulty in processing in one plant, When the ratio of the FSM flocculants to coal slurry without water is 50g/t and coagulating agents is 1.5kg/t, the effect of settlement is the best, productive power is 75t/h, moisture of filter cake is about 25%, concentration of clarified liquid is about 60g/L, contrasting with PAM , the St -AM have cheapness, nontoxic and flocculating well, providing a effective way for fine coal slurry processing.

关 键 词：玉米淀粉 丙烯酰胺 引发剂 接枝共聚 絮凝剂 

分 类 号：TQ316.343[化学工程—高聚物工业]