胺型离子液体聚醚复配破乳剂的制备与性能

Study on Preparation and Properties of Ammonium-Based Ionic Liquids and Polyether demulsifier complexes

摘要:

合成了硝酸正丁胺和醋酸正十二胺两种胺型离子液体，研究了它们与交联型聚醚破乳剂NJ-20复配产生的破乳脱水作用。结果表明，50℃、复配型破乳剂加入量为200mg·L-1时（100mg·L-1聚醚NJ-20破乳剂与100mg·L-1胺型离子液体复配），上述两种胺型离子液体与聚醚NJ-20复配型破乳剂对模拟原油乳状液2h的脱水率分别达到75%和91%，而单独聚醚NJ-20破乳剂在同样的条件下其脱水率仅为65%。40℃、醋酸正十二胺复配型破乳剂加入量为200mg·L-1时，对模拟原油乳状液的脱水率可达59%，明显高于单独聚醚NJ-20破乳剂，表现出较强的低温破乳效果。

Abstract:

Two kinds of ammonium-based ionic liquid, i.e. n-butylamine nitrate and dodecylamine acetate were synthesized. The effects of ammonium-based ionic liquid and crosslinking polyether demulsifier NJ-20 complexes on the dehydration of simulated crude oil emulsion were studied. When the dosage of 200mg·L-1 and the temperature of 50°C, two demulsifier complexes reached the dehydration rate of 75% and 91% in 2 hours, respectively.Then separate polyether demulsifier NJ-20 can only reach the dehydration rate of 65% at the same conditions. When the dosage of 200mg·L-1 and the temperature of 40°C, dodecylamine acetate complexing demulsifier reached the dehydration rate of 59% in 2 hours, which is much higher than that of polyether demulsifier NJ-20, displaying strong low temperature demulsification effect.