摘要
以嵌段聚醚大单体(PEP-90)、N,N-二甲基二烯丙基氯化铵(DM)和丙烯酰氧乙基三甲基氯化铵(DAC)为原料,合成了三元共聚物浮选剂PDMDACP,利用FTIR,^1H NMR等方法表征了结构,并研究了合成条件及气浮条件对气浮选性能的影响。实验结果表明,适宜的合成条件为:溶剂为质量比4∶1的水与丙二醇甲醚的混合溶液,m(DM)∶m(DAC)=4∶1,m(DM+DAC)∶m(PEP-90)=19∶6,单体用量35%(w),甲酸钠用量0.3%(w),引发剂用量0.4%(w),聚合温度50℃,聚合时间8 h。PDMDACP的最佳气浮选条件为:气浮时间15 min,气流量1 L/min,浮选剂用量25 mg/L,在该条件下针对渤海某油田含油污水浊度降低率为98.83%,浮选性能良好。
A terpolymer flotation agent PDMDACP was synthesized by copolymerization of block polyether macromonomer(PEP-90),acryloyloxyethyltrimethylammonium chloride(DAC)and N,N-diallyldimethylammonium chloride(DM).The structure of PDMDACP was characterized by FTIR and 1H NMR.The effects of synthesis and flotation conditions on flotation performance were studied.The result shows that the optimal synthesis conditions are:mixed solution of water and propylene glycol methyl ether with a mass ratio of 4∶1 as the solvent,m(DM)∶m(DAC)4∶1,m(DM+DAC)∶m(PEP-90)19∶6,monomers dosage 35%(w),sodium formate dosage 0.3%(w),initiator dosage 0.4%(w),polymerization temperature 50℃,reaction time 8 h.The optimization flotation conditions for PDMDACP are:flotation time 15 min,gas flow 1 L/min,flotation agent dosage 25 mg/L.The PDMDACP possesses a good flotation performance and the turbidity reduction rate of the wastewater produced from the oil field in Bohai reaches 98.83%at the optimized flotation conditions.
作者
王秀军
唐晓旭
王玉
张健
罗梦娟
Wang Xiujun;Tang Xiaoxu;Wang Yu;Zhang Jian;Luo Mengjuan(State Key Laboratory of Offshore Oil Exploitation,Beijing 100028,China;CNOOC Research Institute Co,Ltd.,Beijing 100028,China;Tianjin Branch of CNOOC(China)Co.Ltd.,Tianjin 300450,China;School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China)
出处
《石油化工》
CAS
CSCD
北大核心
2020年第8期803-809,共7页
Petrochemical Technology
基金
国家自然科学基金联合基金项目(U19B2011)
国家自然科学基金面上项目(51874347)。
关键词
浮选剂
阳离子型聚合物
嵌段聚醚大单体
表面活性
flotation agent
cationic polymer
block polyether macromonomer
surface activity
