含硅型碳酸钙垢防垢剂SMAA的研究  

Containing silicon type calcium carbonate scale inhibition agent SMAA study

作　　者：全红平[1,2,3] 马欣悦 崔艳艳 王丽 黄志宇 QUAN Hongping;MA Xinyue;CUI Yanyan;WANG Li;HUANG Zhiyu(College of Chemistry&Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;Oil&Gas Field Applied Chemistry Key Laboratory of Sichuan Province,Chengdu 610500,China;Engineering Research Center of Oilfield Chemistry,Ministry of Education,Chengdu 610500,China;Xinjiang Karamay City Caifeng Industrial Co.,Ltd.,Karamay 834008,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]油气田应用化学四川省重点实验室,四川成都610500 [3]油田化学教育部工程研究中心,四川成都610500 [4]新疆克拉玛依市采丰实业有限责任公司,新疆克拉玛依834008

出　　处：《应用化工》2024年第9期2083-2088,共6页Applied Chemical Industry

基　　金：丝绸之路经济带创新驱动发展试验区、乌昌石国家自主创新示范区科技发展计划项目(2023LQ03006);四川省科技计划项目(2019YJ0315);油气田应用化学四川省重点实验室开放基金项目(YQKF202001)。

摘　　要：采用水溶液自由基共聚法,以次磷酸钠(SHP)、顺丁烯二酸酐(MA)、2-丙烯酰胺基-2-甲基-1-丙磺酸(AMPS)、乙烯基三甲氧基硅烷(A171)为原料、2,2′-偶氮双(2-甲基丙脒)二盐酸盐(V50)为引发剂,合成了一种新型含硅聚合物防垢剂SMAA,并利用FTIR、^(1)H NMR和XPS对其结构进行表征。结果表明,最优合成条件为:单体配比n(SHP)∶n(MA)∶n(AMPS)∶n(A171)=10∶30∶10∶1,引发剂加量为1.0%,反应温度为80℃,单体浓度为25%,聚合反应时间为5 h。在评价温度为70℃、加量为50 mg/L时,防垢率可达92.9%。利用SEM、XRD和TEM对防垢剂SMAA作用于碳酸钙的机理进行研究,防垢剂SMAA的防垢机理是使碳酸钙晶体发生晶格畸变,阻碍碳酸钙晶体的聚集增大,对已形成的碳酸钙微晶进行包覆。A new silicon-containing polymer scale inhibitor SMAA was synthesized by free radical copolymerization in aqueous solution,using sodium hypophosphate(SHP),acrylamide(MA),2-acrylamide-2-methyl-1-propanesulfonic acid(AMPS),trimethoxy(vinyl)silane(A171)as raw materials and 2,2′-azodiisobutylamidine dihydrochloride(V50)as initiator.The structure was characterized by FTIR,^(1)H NMR,GPC and XPS.The result showed that the optimal synthesis conditions were as follows:Monomer ration n(SHP)∶n(MA)∶n(AMPS)∶n(A171)=10∶30∶10∶1,initiator dosage 1.0%,reaction temperature 80℃,monomer concentration 25%,polymerization time 5 h.When the evaluation temperature is 70℃and the dosage is 50 mg/L,the anti-scale rate can reach 92.9%.SEM,XRD and TEM were used to study the mechanism of action of anti-scale agent SMAA on calcium carbonate.The anti-scale mechanism of anti-scale agent SMAA is to cause lattice distortion of calcium carbonate crystals,prevent the accumulation and increase of calcium carbonate crystals,and coat the formed calcium carbonate microcrystals.

关 键 词：防垢剂 碳酸钙垢 硅烷偶联剂 作用机理 

分 类 号：TQ085[化学工程]