有机蒙脱石复合降凝剂的制备与防蜡降凝作用机理研究  

Study on preparation of organic montmorillonite composite pour point depressant and its mechanism of wax prevention and pour point reduction

作　　者：张文静 周立山[2] 杨文博 周柄男 韩恩山[1] 何艳贞 ZHANG Wenjing;ZHOU Lishan;YANG Wenbo;ZHOU Bingnan;HAN Enshan;HE Yanzhen(School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300401,China;CenerTech Tianjin Chemical Research&Design Institute Co.,Ltd.,Tianjin 300131,China;Luk Qin Oil Production Plant of CNPC Tuha Oilfield,Turpan 838202,China;CenerTech Energy Development Co.,Ltd.Engineering Technology Branch,Tianjin 300456,China)

机构地区：[1]河北工业大学化工学院,天津300401 [2]中海油天津化工研究设计院,天津300131 [3]中国石油吐哈油田公司鲁克沁采油管理区,新疆吐鲁番838202 [4]中海油能源发展股份有限公司工程技术分公司,天津300456

出　　处：《无机盐工业》2023年第9期81-87,共7页Inorganic Chemicals Industry

摘　　要：以丙烯酸十八酯、乙酸乙烯酯和烯丙基磺酸钠为原料,过氧化苯甲酰为引发剂,利用自由基聚合法制备了一种三元聚合物降凝剂;为提高聚合物降凝剂的防蜡降凝效果和稳定性,用十二烷基三甲基氯化铵(DTAC)改性后的蒙脱石与聚合物制备纳米蒙脱石复合降凝剂,对蜡质模型油进行了效果评价。利用差示扫描量热仪(DSC)和偏光显微镜(POM)对降凝剂作用机理进行了分析。结果表明:在添加量为700 mg/L时,纳米复合降凝剂BYX-2(5%)可使模型油防蜡率达94.3%,凝固点降低至21℃;与相同添加量下的BYX-2降凝剂相比,防蜡率提升7.1%,凝固点降低3℃,且稳定性得到提升。A ternary polymeric pour point depressant was prepared by using octadecyl acrylate,vinyl acetate and sodium al-lyl sulfonate as raw materials and benzoyl peroxide as initiator.To improve the wax prevention and stabilization effect of polymer pour point depressant,a nano-montmorillonite composite pour point depressant was prepared by using dodecyl tri-methyl ammonium chloride(DTAC)modified montmorillonite and polymer to evaluate the effect on waxy model oil.The mechanism of the action of the pour point depressant was also reasoned and analyzed by differential scanning calorimetry(DSC)and polarized light microscopy(POM).The results showed that the nanocomposite pours point depressant BYX-2(5%)could achieve 94.3%wax prevention rate and lower pour point to 21 oC for model oil at 700 mg/L addition.Compared with BYX-2 pour point agent at the same addition rate,the wax prevention rate was improved by 7.1%,the pour point was lowered by 3 oC,and the stability was improved.

关 键 词：改性蒙脱石 纳米复合降凝剂 蜡质油 流动性 

分 类 号：TQ127.2[化学工程—无机化工]