超支化阳离子型聚丙烯酰胺絮凝剂的研制及应用  

Development and Application of Hyperbranched Cationic Polyacrylamide Flocculants

作　　者：刘建 于建立 吴文兵 杨金龙 郝志伟 张贵清 LIU Jian;YU Jianli;WU Wenbing;YANG Jinlong;HAO Zhiwei;ZHANG Guiqing(CNPC Engineering Technology Research Co.,Ltd.,Tianjin 300451,China;Department of Drilling Engineering Technology,CNPC Offshore Engineering Co.,Ltd.,Tianjin 300451,China)

机构地区：[1]中国石油集团工程技术研究有限公司,天津300451 [2]中国石油集团海洋工程公司钻井工程事业部,天津300451

出　　处：《天津科技》2023年第1期48-51,共4页Tianjin Science & Technology

摘　　要：以N,N-亚甲基双丙烯酰胺(BisAM)为交联剂,以丙烯酰胺(AM)和丙烯酰氧乙基三甲基氯化铵(DAC)为主要原料,采用溶液聚合法合成具有超支化结构的阳离子型聚丙烯酰胺絮凝剂。通过优化实验条件,确定了反应温度(55℃)、交联剂BisAM、链转移剂BCPA的最佳用量以及AM与DAC的最佳摩尔比(17∶3),获得了阳离子度为24.8%的超支化结构的絮凝剂JR-211。用JR-211处理埕海3-2-8井的废弃钻井液,其加量为250 mg/L时,钻井液脱水率达到61.6%,污泥沉淀含水率低至35.5%,干基回收率高达98.7%。The cationic polyacrylamide flocculant with hyperbranched structure was synthesized by solution polymerization using N,N-methylene bisacrylamide(BisAM)as crosslinking agent,acrylamide(AM)and acryloyloxyethyl trimethylammonium chloride(DAC)as main raw materials.By optimizing the experimental conditions,the reaction temperature(55℃),the optimal dosages of crosslinking agent BisAM and chain transfer agent BCPA and the optimal molar ratio of AM-to-DAC(17:3)were determined.The hyperbranched flocculant JR-211 with cationic degree of 24.8%was obtained.The waste drilling fluid from well Chenghai 3-2-8 is treated with JR-211.When the dosage is 250 mg/L,the dehydration rate of drilling fluid reaches 61.6%,the water content of sludge sedimentation is as low as 35.5%,and the dry basis recovery rate is as high as 98.7%.

关 键 词：絮凝剂 超支化 阳离子度 聚丙烯酰胺 钻井液 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业]