摘要
以由苯酚、多乙烯多胺、甲醛在二甲苯中制备的胺基化酚醛树脂作起始剂制备PO/EO/PO三嵌段聚醚,聚醚与聚甲基三乙氧基硅烷反应制备含硅聚醚,含硅聚醚与SP169(脂肪醇EO/PO双嵌段聚醚)在乙醇中混配,得到水溶性复配破乳剂LS938 2。详述了合成过程。在70℃和80℃下,加药量60～120mg/L,用于含水24%和32%的辽河油田锦州采油厂老站新鲜稠油室内脱水时,LS938 2的效果好于现场使用的AF8464,脱水率平均提高26 9%,脱水速度较快,界面整齐,污水含油较少,色泽较浅。在锦采老站现场对比试验中,加药量90mg/L,脱水温度70℃,使用LS938 2和AF8464时电脱前原油含水分别为4 5%和16 2%,电脱水后分别为0 15%和0 41%。LS938 2是一种高效稠油破乳剂。表2参7。
A water soluble combinational demulsifier, LS938-2, is prepared through following steps: reaction of phenol, polyethylenepolyamine, and formaldehyde in toluene to give an aminated phenolic resin; synthesis of a PO/EO/PO polyether with the phenlic resin as initiator; reaction of the polyether with polymethyltriethoxysilane to give a silicone-polyether; and mixing the silicone-polyether with SP169, an aliphatic alcohol initiated EO/PO polyether to obtaine the end product. The preparing process is described in some detail. When used in laboratory to dehydrating the fresh heavy crude oil samples of water cut 24% and 32% from the old oil gathering/pretreating plant in Jingzhou oil production factory, Liaohe, at dosage 60-120 mg/L and at temperatures 70℃ and 80℃, LS938-2 is much more effective than AF8464, a demulsifier being used in the plant, and the oil/water separation proceeds faster to higher extent (average dehydration increment 26.9%) with sharper interfaces and clearer water phase containing less oil substances. In a comparative field trial on LS938-2 and AF8464 of dosage 90 mg/L at 70℃ performed in the plant, the water cut of the crude oil being treated is decreased to 4.5% and 16.2% before electric dehydration and to 0.15% and 0.41% after electric dehydration, respectively. LS938-2 is a very effective demulsifier for the heavy crude oil.
出处
《油田化学》
CAS
CSCD
北大核心
2004年第4期328-329,323,共3页
Oilfield Chemistry
