一种新型渣油降粘剂的制备及评价

摘要

The oil-soluble viscosity depressant was synthesized by maleic anhydride,styrene and octadecyl acrylate( AMS). Results show that octadecyl acrylate,styrene and maleic anhydride monomer ratio for 5: 1: 3,dosage of initiator is 0. 6% ,under the influence of synthetic temperature 90 ℃ when the reaction time is 6 h,the effect of AMS was the best. The result showed that when the temperature is 50 ℃ ,the best usage of 0. 6% ,the ratio of viscosity reduction of residue oil was 54. 11% . Besides,when the best dosage of Span-80 was 0. 2% and the shear rate is 2 000 r/ min,the ratio of viscosity reduction of residue oil ex-ceeded 90% .%研究以自制的丙烯酸十八醇醚酯单体（A）、马来酸酐（M）、苯乙烯（S）为单体进行共聚反应，制得一种油溶性稠油降粘剂 AMS。确定了 AMS 合成的最佳条件：丙烯酸十八醇醚酯、苯乙烯、马来酸酐摩尔比为5：1：3，反应温度为90℃，引发剂 BPO 用量为0.6%，反应时间为6 h。结果表明，在温度为50℃时，降黏剂 AMS 加量为0.6%时对渣油的降粘率达到54.11%。此外，加入0.2%助剂 Span-80能进一步提高 AMS 降粘效果，当剪切速率为2000 r/ min 时 AMS 的降粘效果可达90%以上。